From 31801750913a459a71b2a34ade758f2aaa04639b Mon Sep 17 00:00:00 2001
From: s1fr0 <28568419+s1fr0@users.noreply.github.com>
Date: Wed, 7 Sep 2022 00:30:08 +0200
Subject: [PATCH 1/4] remove ethers-core

---
 Cargo.lock | 1 -
 Cargo.toml | 3 ---
 src/lib.rs | 2 --
 3 files changed, 6 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index 466bba8..c39475f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -87,7 +87,6 @@ dependencies = [
  "color-eyre",
  "criterion",
  "ethers",
- "ethers-core",
  "fnv",
  "hex",
  "hex-literal",
diff --git a/Cargo.toml b/Cargo.toml
index 53eaf3f..5081e1a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -25,9 +25,6 @@ ark-serialize = { version = "0.3.0", default-features = false }
 hex = "0.4.3"
 byteorder = "1.4.3"
 
-# ethereum compat
-ethers-core = { git = "https://github.com/gakonst/ethers-rs", default-features = false }
-
 # error handling
 thiserror = "1.0.26"
 color-eyre = "0.5"
diff --git a/src/lib.rs b/src/lib.rs
index daf1c71..af8ff88 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -7,7 +7,5 @@ pub use witness::WitnessCalculator;
 pub mod circom;
 pub use circom::{CircomBuilder, CircomCircuit, CircomConfig, CircomReduction};
 
-pub mod ethereum;
-
 mod zkey;
 pub use zkey::read_zkey;

From fb8f7a920f61bbe39ad6b3c9d2b6a475590ebfeb Mon Sep 17 00:00:00 2001
From: s1fr0 <28568419+s1fr0@users.noreply.github.com>
Date: Wed, 7 Sep 2022 00:33:16 +0200
Subject: [PATCH 2/4] test

---
 Cargo.lock      | 2020 +----------------------------------------------
 Cargo.toml      |    1 -
 src/ethereum.rs |  274 -------
 3 files changed, 21 insertions(+), 2274 deletions(-)
 delete mode 100644 src/ethereum.rs

diff --git a/Cargo.lock b/Cargo.lock
index c39475f..cadfc5c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,16 +2,6 @@
 # It is not intended for manual editing.
 version = 3
 
-[[package]]
-name = "Inflector"
-version = "0.11.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fe438c63458706e03479442743baae6c88256498e6431708f6dfc520a26515d3"
-dependencies = [
- "lazy_static",
- "regex",
-]
-
 [[package]]
 name = "addr2line"
 version = "0.17.0"
@@ -27,18 +17,6 @@ version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe"
 
-[[package]]
-name = "aes"
-version = "0.7.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9e8b47f52ea9bae42228d07ec09eb676433d7c4ed1ebdf0f1d1c29ed446f1ab8"
-dependencies = [
- "cfg-if",
- "cipher",
- "cpufeatures",
- "opaque-debug 0.3.0",
-]
-
 [[package]]
 name = "ahash"
 version = "0.7.6"
@@ -50,15 +28,6 @@ dependencies = [
  "version_check",
 ]
 
-[[package]]
-name = "aho-corasick"
-version = "0.7.18"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1e37cfd5e7657ada45f742d6e99ca5788580b5c529dc78faf11ece6dc702656f"
-dependencies = [
- "memchr",
-]
-
 [[package]]
 name = "ark-bn254"
 version = "0.3.0"
@@ -86,7 +55,6 @@ dependencies = [
  "cfg-if",
  "color-eyre",
  "criterion",
- "ethers",
  "fnv",
  "hex",
  "hex-literal",
@@ -111,9 +79,9 @@ dependencies = [
  "ark-serialize",
  "ark-snark",
  "ark-std",
- "blake2 0.9.2",
+ "blake2",
  "derivative",
- "digest 0.9.0",
+ "digest",
  "rayon",
 ]
 
@@ -147,7 +115,7 @@ dependencies = [
  "num-traits",
  "paste",
  "rayon",
- "rustc_version 0.3.3",
+ "rustc_version",
  "zeroize",
 ]
 
@@ -222,7 +190,7 @@ checksum = "1d6c2b318ee6e10f8c2853e73a83adc0ccb88995aa978d8a3408d492ab2ee671"
 dependencies = [
  "ark-serialize-derive",
  "ark-std",
- "digest 0.9.0",
+ "digest",
 ]
 
 [[package]]
@@ -258,34 +226,6 @@ dependencies = [
  "rayon",
 ]
 
-[[package]]
-name = "arrayvec"
-version = "0.7.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8da52d66c7071e2e3fa2a1e5c6d088fec47b593032b254f5e980de8ea54454d6"
-
-[[package]]
-name = "async-trait"
-version = "0.1.57"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "76464446b8bc32758d7e88ee1a804d9914cd9b1cb264c029899680b0be29826f"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
-]
-
-[[package]]
-name = "async_io_stream"
-version = "0.3.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b6d7b9decdf35d8908a7e3ef02f64c5e9b1695e230154c0e8de3969142d9b94c"
-dependencies = [
- "futures",
- "pharos",
- "rustc_version 0.4.0",
-]
-
 [[package]]
 name = "atty"
 version = "0.2.14"
@@ -297,30 +237,6 @@ dependencies = [
  "winapi",
 ]
 
-[[package]]
-name = "auto_impl"
-version = "0.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7862e21c893d65a1650125d157eaeec691439379a1cee17ee49031b79236ada4"
-dependencies = [
- "proc-macro-error",
- "proc-macro2",
- "quote",
- "syn",
-]
-
-[[package]]
-name = "auto_impl"
-version = "1.0.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8a8c1df849285fbacd587de7818cc7d13be6cd2cbcd47a04fb1801b0e2706e33"
-dependencies = [
- "proc-macro-error",
- "proc-macro2",
- "quote",
- "syn",
-]
-
 [[package]]
 name = "autocfg"
 version = "1.1.0"
@@ -342,89 +258,12 @@ dependencies = [
  "rustc-demangle",
 ]
 
-[[package]]
-name = "base16ct"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "349a06037c7bf932dd7e7d1f653678b2038b9ad46a74102f1fc7bd7872678cce"
-
-[[package]]
-name = "base58"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5024ee8015f02155eee35c711107ddd9a9bf3cb689cf2a9089c97e79b6e1ae83"
-
-[[package]]
-name = "base58check"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2ee2fe4c9a0c84515f136aaae2466744a721af6d63339c18689d9e995d74d99b"
-dependencies = [
- "base58",
- "sha2 0.8.2",
-]
-
-[[package]]
-name = "base64"
-version = "0.12.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3441f0f7b02788e948e47f457ca01f1d7e6d92c693bc132c22b087d3141c03ff"
-
-[[package]]
-name = "base64"
-version = "0.13.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "904dfeac50f3cdaba28fc6f57fdcddb75f49ed61346676a78c4ffe55877802fd"
-
-[[package]]
-name = "base64ct"
-version = "1.0.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8a32fd6af2b5827bce66c29053ba0e7c42b9dcab01835835058558c10851a46b"
-
-[[package]]
-name = "bech32"
-version = "0.7.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2dabbe35f96fb9507f7330793dc490461b2962659ac5d427181e451a623751d1"
-
-[[package]]
-name = "bincode"
-version = "1.3.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b1f45e9417d87227c7a56d22e471c6206462cba514c7590c09aff4cf6d1ddcad"
-dependencies = [
- "serde",
-]
-
 [[package]]
 name = "bitflags"
 version = "1.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
-[[package]]
-name = "bitvec"
-version = "0.17.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "41262f11d771fd4a61aa3ce019fca363b4b6c282fca9da2a31186d3965a47a5c"
-dependencies = [
- "either",
- "radium 0.3.0",
-]
-
-[[package]]
-name = "bitvec"
-version = "1.0.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1bc2832c24239b0141d5674bb9174f9d68a8b5b3f2753311927c172ca46f7e9c"
-dependencies = [
- "funty",
- "radium 0.7.0",
- "tap",
- "wyz",
-]
-
 [[package]]
 name = "blake2"
 version = "0.9.2"
@@ -432,55 +271,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0a4e37d16930f5459780f5621038b6382b9bb37c19016f39fb6b5808d831f174"
 dependencies = [
  "crypto-mac",
- "digest 0.9.0",
- "opaque-debug 0.3.0",
-]
-
-[[package]]
-name = "blake2"
-version = "0.10.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b9cf849ee05b2ee5fba5e36f97ff8ec2533916700fc0758d40d92136a42f3388"
-dependencies = [
- "digest 0.10.3",
-]
-
-[[package]]
-name = "block-buffer"
-version = "0.7.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c0940dc441f31689269e10ac70eb1002a3a1d3ad1390e030043662eb7fe4688b"
-dependencies = [
- "block-padding",
- "byte-tools",
- "byteorder",
- "generic-array 0.12.4",
-]
-
-[[package]]
-name = "block-buffer"
-version = "0.10.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0bf7fe51849ea569fd452f37822f606a5cabb684dc918707a0193fd4664ff324"
-dependencies = [
- "generic-array 0.14.6",
+ "digest",
+ "opaque-debug",
 ]
 
-[[package]]
-name = "block-padding"
-version = "0.1.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fa79dedbb091f449f1f39e53edf88d5dbe95f895dae6135a8d7b881fb5af73f5"
-dependencies = [
- "byte-tools",
-]
-
-[[package]]
-name = "bs58"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "771fe0050b883fcc3ea2359b1a96bcfbc090b7116eae7c3c512c7a083fdf23d3"
-
 [[package]]
 name = "bstr"
 version = "0.2.17"
@@ -499,18 +293,6 @@ version = "3.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c1ad822118d20d2c234f427000d5acc36eabe1e29a348c89b63dd60b13f28e5d"
 
-[[package]]
-name = "byte-slice-cast"
-version = "1.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "87c5fdd0166095e1d463fc6cc01aa8ce547ad77a4e84d42eb6762b084e28067e"
-
-[[package]]
-name = "byte-tools"
-version = "0.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e3b5ca7a04898ad4bcd41c90c5285445ff5b791899bb1b0abdd2a2aa791211d7"
-
 [[package]]
 name = "bytecheck"
 version = "0.6.9"
@@ -538,46 +320,6 @@ version = "1.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "14c189c53d098945499cdfa7ecc63567cf3886b3332b312a5b4585d8d3a6a610"
 
-[[package]]
-name = "bytes"
-version = "1.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ec8a7b6a70fde80372154c65702f00a0f56f3e1c36abbc6c440484be248856db"
-dependencies = [
- "serde",
-]
-
-[[package]]
-name = "camino"
-version = "1.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "88ad0e1e3e88dd237a156ab9f571021b8a158caa0ae44b1968a241efb5144c1e"
-dependencies = [
- "serde",
-]
-
-[[package]]
-name = "cargo-platform"
-version = "0.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cbdb825da8a5df079a43676dbe042702f1707b1109f713a01420fbb4cc71fa27"
-dependencies = [
- "serde",
-]
-
-[[package]]
-name = "cargo_metadata"
-version = "0.15.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3abb7553d5b9b8421c6de7cb02606ff15e0c6eea7d8eadd75ef013fd636bec36"
-dependencies = [
- "camino",
- "cargo-platform",
- "semver 1.0.13",
- "serde",
- "serde_json",
-]
-
 [[package]]
 name = "cast"
 version = "0.3.0"
@@ -596,25 +338,6 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
-[[package]]
-name = "chrono"
-version = "0.4.22"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bfd4d1b31faaa3a89d7934dbded3111da0d2ef28e3ebccdb4f0179f5929d1ef1"
-dependencies = [
- "num-integer",
- "num-traits",
-]
-
-[[package]]
-name = "cipher"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7ee52072ec15386f770805afd189a01c8841be8696bed250fa2f13c4c0d6dfb7"
-dependencies = [
- "generic-array 0.14.6",
-]
-
 [[package]]
 name = "clap"
 version = "2.34.0"
@@ -626,63 +349,6 @@ dependencies = [
  "unicode-width",
 ]
 
-[[package]]
-name = "coins-bip32"
-version = "0.7.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "634c509653de24b439672164bbf56f5f582a2ab0e313d3b0f6af0b7345cf2560"
-dependencies = [
- "bincode",
- "bs58",
- "coins-core",
- "digest 0.10.3",
- "getrandom",
- "hmac",
- "k256",
- "lazy_static",
- "serde",
- "sha2 0.10.2",
- "thiserror",
-]
-
-[[package]]
-name = "coins-bip39"
-version = "0.7.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2a11892bcac83b4c6e95ab84b5b06c76d9d70ad73548dd07418269c5c7977171"
-dependencies = [
- "bitvec 0.17.4",
- "coins-bip32",
- "getrandom",
- "hex",
- "hmac",
- "pbkdf2 0.11.0",
- "rand",
- "sha2 0.10.2",
- "thiserror",
-]
-
-[[package]]
-name = "coins-core"
-version = "0.7.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c94090a6663f224feae66ab01e41a2555a8296ee07b5f20dab8888bdefc9f617"
-dependencies = [
- "base58check",
- "base64 0.12.3",
- "bech32",
- "blake2 0.10.4",
- "digest 0.10.3",
- "generic-array 0.14.6",
- "hex",
- "ripemd",
- "serde",
- "serde_derive",
- "sha2 0.10.2",
- "sha3",
- "thiserror",
-]
-
 [[package]]
 name = "color-eyre"
 version = "0.5.11"
@@ -710,18 +376,6 @@ dependencies = [
  "tracing-error",
 ]
 
-[[package]]
-name = "const-oid"
-version = "0.9.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "722e23542a15cea1f65d4a1419c4cfd7a26706c70871a13a04238ca3f40f1661"
-
-[[package]]
-name = "convert_case"
-version = "0.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fb4a24b1aaf0fd0ce8b45161144d6f42cd91677fd5940fd431183eb023b3a2b8"
-
 [[package]]
 name = "corosensei"
 version = "0.1.3"
@@ -732,16 +386,7 @@ dependencies = [
  "cfg-if",
  "libc",
  "scopeguard",
- "windows-sys 0.33.0",
-]
-
-[[package]]
-name = "cpufeatures"
-version = "0.2.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dc948ebb96241bb40ab73effeb80d9f93afaad49359d159a5e61be51619fe813"
-dependencies = [
- "libc",
+ "windows-sys",
 ]
 
 [[package]]
@@ -893,41 +538,13 @@ dependencies = [
  "once_cell",
 ]
 
-[[package]]
-name = "crunchy"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7a81dae078cea95a014a339291cec439d2f232ebe854a9d672b796c6afafa9b7"
-
-[[package]]
-name = "crypto-bigint"
-version = "0.4.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9f2b443d17d49dad5ef0ede301c3179cc923b8822f3393b4d2c28c269dd4a122"
-dependencies = [
- "generic-array 0.14.6",
- "rand_core",
- "subtle",
- "zeroize",
-]
-
-[[package]]
-name = "crypto-common"
-version = "0.1.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1bfb12502f3fc46cca1bb51ac28df9d618d813cdc3d2f25b9fe775a34af26bb3"
-dependencies = [
- "generic-array 0.14.6",
- "typenum",
-]
-
 [[package]]
 name = "crypto-mac"
 version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b584a330336237c1eecd3e94266efb216c56ed91225d634cb2991c5f3fd1aeab"
 dependencies = [
- "generic-array 0.14.6",
+ "generic-array",
  "subtle",
 ]
 
@@ -953,15 +570,6 @@ dependencies = [
  "memchr",
 ]
 
-[[package]]
-name = "ctr"
-version = "0.8.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "049bb91fb4aaf0e3c7efa6cd5ef877dbbbd15b39dad06d9948de4ec8a75761ea"
-dependencies = [
- "cipher",
-]
-
 [[package]]
 name = "darling"
 version = "0.13.4"
@@ -996,16 +604,6 @@ dependencies = [
  "syn",
 ]
 
-[[package]]
-name = "der"
-version = "0.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "13dd2ae565c0a381dde7fade45fce95984c568bdcb4700a4fdbe3175e0380b2f"
-dependencies = [
- "const-oid",
- "zeroize",
-]
-
 [[package]]
 name = "derivative"
 version = "2.2.0"
@@ -1019,49 +617,11 @@ dependencies = [
 
 [[package]]
 name = "digest"
-version = "0.8.1"
+version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f3d0c8c8752312f9713efd397ff63acb9f85585afbf179282e720e7704954dd5"
+checksum = "d3dd60d1080a57a05ab032377049e0591415d2b31afd7028356dbf3cc6dcb066"
 dependencies = [
- "generic-array 0.12.4",
-]
-
-[[package]]
-name = "digest"
-version = "0.9.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d3dd60d1080a57a05ab032377049e0591415d2b31afd7028356dbf3cc6dcb066"
-dependencies = [
- "generic-array 0.14.6",
-]
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+dependencies = [
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+ "winapi",
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+ "semver",
 ]
 
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+]
 
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-[[package]]
-name = "winreg"
-version = "0.10.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "80d0f4e272c85def139476380b12f9ac60926689dd2e01d4923222f40580869d"
-dependencies = [
- "winapi",
-]
-
-[[package]]
-name = "ws_stream_wasm"
-version = "0.7.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "47ca1ab42f5afed7fc332b22b6e932ca5414b209465412c8cdf0ad23bc0de645"
-dependencies = [
- "async_io_stream",
- "futures",
- "js-sys",
- "pharos",
- "rustc_version 0.4.0",
- "send_wrapper",
- "thiserror",
- "wasm-bindgen",
- "wasm-bindgen-futures",
- "web-sys",
-]
-
-[[package]]
-name = "wyz"
-version = "0.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "30b31594f29d27036c383b53b59ed3476874d518f0efb151b27a4c275141390e"
-dependencies = [
- "tap",
-]
-
 [[package]]
 name = "zeroize"
 version = "1.5.7"
diff --git a/Cargo.toml b/Cargo.toml
index 5081e1a..fb2c240 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -36,7 +36,6 @@ cfg-if = "1.0"
 hex-literal = "0.2.1"
 tokio = { version = "1.7.1", features = ["macros"] }
 serde_json = "1.0.64"
-ethers = { git = "https://github.com/gakonst/ethers-rs", features = ["abigen"] }
 
 [[bench]]
 name = "groth16"
diff --git a/src/ethereum.rs b/src/ethereum.rs
deleted file mode 100644
index de644cc..0000000
--- a/src/ethereum.rs
+++ /dev/null
@@ -1,274 +0,0 @@
-//! Helpers for converting Arkworks types to U256-tuples as expected by the
-//! Solidity Groth16 Verifier smart contracts
-use ark_ff::{BigInteger, FromBytes, PrimeField};
-use ethers_core::types::U256;
-use num_traits::Zero;
-
-use ark_bn254::{Bn254, Fq, Fq2, Fr, G1Affine, G2Affine};
-
-pub struct Inputs(pub Vec<U256>);
-
-impl From<&[Fr]> for Inputs {
-    fn from(src: &[Fr]) -> Self {
-        let els = src.iter().map(|point| point_to_u256(*point)).collect();
-
-        Self(els)
-    }
-}
-
-#[derive(Default, Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
-pub struct G1 {
-    pub x: U256,
-    pub y: U256,
-}
-
-impl From<G1> for G1Affine {
-    fn from(src: G1) -> G1Affine {
-        let x: Fq = u256_to_point(src.x);
-        let y: Fq = u256_to_point(src.y);
-        let inf = x.is_zero() && y.is_zero();
-        G1Affine::new(x, y, inf)
-    }
-}
-
-type G1Tup = (U256, U256);
-
-impl G1 {
-    pub fn as_tuple(&self) -> (U256, U256) {
-        (self.x, self.y)
-    }
-}
-
-impl From<&G1Affine> for G1 {
-    fn from(p: &G1Affine) -> Self {
-        Self {
-            x: point_to_u256(p.x),
-            y: point_to_u256(p.y),
-        }
-    }
-}
-
-#[derive(Default, Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
-pub struct G2 {
-    pub x: [U256; 2],
-    pub y: [U256; 2],
-}
-
-impl From<G2> for G2Affine {
-    fn from(src: G2) -> G2Affine {
-        let c0 = u256_to_point(src.x[0]);
-        let c1 = u256_to_point(src.x[1]);
-        let x = Fq2::new(c0, c1);
-
-        let c0 = u256_to_point(src.y[0]);
-        let c1 = u256_to_point(src.y[1]);
-        let y = Fq2::new(c0, c1);
-
-        let inf = x.is_zero() && y.is_zero();
-        G2Affine::new(x, y, inf)
-    }
-}
-
-type G2Tup = ([U256; 2], [U256; 2]);
-
-impl G2 {
-    // NB: Serialize the c1 limb first.
-    pub fn as_tuple(&self) -> G2Tup {
-        ([self.x[1], self.x[0]], [self.y[1], self.y[0]])
-    }
-}
-
-impl From<&G2Affine> for G2 {
-    fn from(p: &G2Affine) -> Self {
-        Self {
-            x: [point_to_u256(p.x.c0), point_to_u256(p.x.c1)],
-            y: [point_to_u256(p.y.c0), point_to_u256(p.y.c1)],
-        }
-    }
-}
-
-#[derive(Default, Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
-pub struct Proof {
-    pub a: G1,
-    pub b: G2,
-    pub c: G1,
-}
-
-impl Proof {
-    pub fn as_tuple(&self) -> (G1Tup, G2Tup, G1Tup) {
-        (self.a.as_tuple(), self.b.as_tuple(), self.c.as_tuple())
-    }
-}
-
-impl From<ark_groth16::Proof<Bn254>> for Proof {
-    fn from(proof: ark_groth16::Proof<Bn254>) -> Self {
-        Self {
-            a: G1::from(&proof.a),
-            b: G2::from(&proof.b),
-            c: G1::from(&proof.c),
-        }
-    }
-}
-
-impl From<Proof> for ark_groth16::Proof<Bn254> {
-    fn from(src: Proof) -> ark_groth16::Proof<Bn254> {
-        ark_groth16::Proof {
-            a: src.a.into(),
-            b: src.b.into(),
-            c: src.c.into(),
-        }
-    }
-}
-
-#[derive(Default, Clone, PartialEq, Eq, PartialOrd, Ord)]
-pub struct VerifyingKey {
-    pub alpha1: G1,
-    pub beta2: G2,
-    pub gamma2: G2,
-    pub delta2: G2,
-    pub ic: Vec<G1>,
-}
-
-impl VerifyingKey {
-    pub fn as_tuple(&self) -> (G1Tup, G2Tup, G2Tup, G2Tup, Vec<G1Tup>) {
-        (
-            self.alpha1.as_tuple(),
-            self.beta2.as_tuple(),
-            self.gamma2.as_tuple(),
-            self.delta2.as_tuple(),
-            self.ic.iter().map(|i| i.as_tuple()).collect(),
-        )
-    }
-}
-
-impl From<ark_groth16::VerifyingKey<Bn254>> for VerifyingKey {
-    fn from(vk: ark_groth16::VerifyingKey<Bn254>) -> Self {
-        Self {
-            alpha1: G1::from(&vk.alpha_g1),
-            beta2: G2::from(&vk.beta_g2),
-            gamma2: G2::from(&vk.gamma_g2),
-            delta2: G2::from(&vk.delta_g2),
-            ic: vk.gamma_abc_g1.iter().map(G1::from).collect(),
-        }
-    }
-}
-
-impl From<VerifyingKey> for ark_groth16::VerifyingKey<Bn254> {
-    fn from(src: VerifyingKey) -> ark_groth16::VerifyingKey<Bn254> {
-        ark_groth16::VerifyingKey {
-            alpha_g1: src.alpha1.into(),
-            beta_g2: src.beta2.into(),
-            gamma_g2: src.gamma2.into(),
-            delta_g2: src.delta2.into(),
-            gamma_abc_g1: src.ic.into_iter().map(Into::into).collect(),
-        }
-    }
-}
-
-// Helper for converting a PrimeField to its U256 representation for Ethereum compatibility
-fn u256_to_point<F: PrimeField>(point: U256) -> F {
-    let mut buf = [0; 32];
-    point.to_little_endian(&mut buf);
-    let bigint = F::BigInt::read(&buf[..]).expect("always works");
-    F::from_repr(bigint).expect("alwasy works")
-}
-
-// Helper for converting a PrimeField to its U256 representation for Ethereum compatibility
-// (U256 reads data as big endian)
-fn point_to_u256<F: PrimeField>(point: F) -> U256 {
-    let point = point.into_repr();
-    let point_bytes = point.to_bytes_be();
-    U256::from(&point_bytes[..])
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-    use ark_bn254::Fq;
-
-    fn fq() -> Fq {
-        Fq::from(2)
-    }
-
-    fn fq2() -> Fq2 {
-        Fq2::from(2)
-    }
-
-    fn fr() -> Fr {
-        Fr::from(2)
-    }
-
-    fn g1() -> G1Affine {
-        G1Affine::new(fq(), fq(), false)
-    }
-
-    fn g2() -> G2Affine {
-        G2Affine::new(fq2(), fq2(), false)
-    }
-
-    #[test]
-    fn convert_fq() {
-        let el = fq();
-        let el2 = point_to_u256(el);
-        let el3: Fq = u256_to_point(el2);
-        let el4 = point_to_u256(el3);
-        assert_eq!(el, el3);
-        assert_eq!(el2, el4);
-    }
-
-    #[test]
-    fn convert_fr() {
-        let el = fr();
-        let el2 = point_to_u256(el);
-        let el3: Fr = u256_to_point(el2);
-        let el4 = point_to_u256(el3);
-        assert_eq!(el, el3);
-        assert_eq!(el2, el4);
-    }
-
-    #[test]
-    fn convert_g1() {
-        let el = g1();
-        let el2 = G1::from(&el);
-        let el3: G1Affine = el2.into();
-        let el4 = G1::from(&el3);
-        assert_eq!(el, el3);
-        assert_eq!(el2, el4);
-    }
-
-    #[test]
-    fn convert_g2() {
-        let el = g2();
-        let el2 = G2::from(&el);
-        let el3: G2Affine = el2.into();
-        let el4 = G2::from(&el3);
-        assert_eq!(el, el3);
-        assert_eq!(el2, el4);
-    }
-
-    #[test]
-    fn convert_vk() {
-        let vk = ark_groth16::VerifyingKey::<Bn254> {
-            alpha_g1: g1(),
-            beta_g2: g2(),
-            gamma_g2: g2(),
-            delta_g2: g2(),
-            gamma_abc_g1: vec![g1(), g1(), g1()],
-        };
-        let vk_ethers = VerifyingKey::from(vk.clone());
-        let ark_vk: ark_groth16::VerifyingKey<Bn254> = vk_ethers.into();
-        assert_eq!(ark_vk, vk);
-    }
-
-    #[test]
-    fn convert_proof() {
-        let p = ark_groth16::Proof::<Bn254> {
-            a: g1(),
-            b: g2(),
-            c: g1(),
-        };
-        let p2 = Proof::from(p.clone());
-        let p3 = ark_groth16::Proof::from(p2);
-        assert_eq!(p, p3);
-    }
-}

From 264831cf024243c0f588bb8a759fff48c34a3fb5 Mon Sep 17 00:00:00 2001
From: tyshkor <tyshko1@gmail.com>
Date: Wed, 8 Feb 2023 08:25:31 +0100
Subject: [PATCH 3/4] return ethereum and add a feature

---
 Cargo.lock      | 2263 +++++++++++++++++++++++++++++++++++++++++++++--
 Cargo.toml      |    8 +-
 src/ethereum.rs |  274 ++++++
 src/lib.rs      |    3 +
 4 files changed, 2469 insertions(+), 79 deletions(-)
 create mode 100644 src/ethereum.rs

diff --git a/Cargo.lock b/Cargo.lock
index cadfc5c..0bf4c60 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,6 +2,16 @@
 # It is not intended for manual editing.
 version = 3
 
+[[package]]
+name = "Inflector"
+version = "0.11.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fe438c63458706e03479442743baae6c88256498e6431708f6dfc520a26515d3"
+dependencies = [
+ "lazy_static",
+ "regex",
+]
+
 [[package]]
 name = "addr2line"
 version = "0.17.0"
@@ -17,6 +27,17 @@ version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe"
 
+[[package]]
+name = "aes"
+version = "0.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "433cfd6710c9986c576a25ca913c39d66a6474107b406f34f91d4a8923395241"
+dependencies = [
+ "cfg-if",
+ "cipher",
+ "cpufeatures",
+]
+
 [[package]]
 name = "ahash"
 version = "0.7.6"
@@ -28,6 +49,15 @@ dependencies = [
  "version_check",
 ]
 
+[[package]]
+name = "aho-corasick"
+version = "0.7.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cc936419f96fa211c1b9166887b38e5e40b19958e5b895be7c1f93adec7071ac"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "ark-bn254"
 version = "0.3.0"
@@ -55,6 +85,8 @@ dependencies = [
  "cfg-if",
  "color-eyre",
  "criterion",
+ "ethers",
+ "ethers-core",
  "fnv",
  "hex",
  "hex-literal",
@@ -79,9 +111,9 @@ dependencies = [
  "ark-serialize",
  "ark-snark",
  "ark-std",
- "blake2",
+ "blake2 0.9.2",
  "derivative",
- "digest",
+ "digest 0.9.0",
  "rayon",
 ]
 
@@ -115,7 +147,7 @@ dependencies = [
  "num-traits",
  "paste",
  "rayon",
- "rustc_version",
+ "rustc_version 0.3.3",
  "zeroize",
 ]
 
@@ -179,7 +211,7 @@ dependencies = [
  "ark-ff",
  "ark-std",
  "tracing",
- "tracing-subscriber",
+ "tracing-subscriber 0.2.25",
 ]
 
 [[package]]
@@ -190,7 +222,7 @@ checksum = "1d6c2b318ee6e10f8c2853e73a83adc0ccb88995aa978d8a3408d492ab2ee671"
 dependencies = [
  "ark-serialize-derive",
  "ark-std",
- "digest",
+ "digest 0.9.0",
 ]
 
 [[package]]
@@ -226,6 +258,34 @@ dependencies = [
  "rayon",
 ]
 
+[[package]]
+name = "arrayvec"
+version = "0.7.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8da52d66c7071e2e3fa2a1e5c6d088fec47b593032b254f5e980de8ea54454d6"
+
+[[package]]
+name = "async-trait"
+version = "0.1.64"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1cd7fce9ba8c3c042128ce72d8b2ddbf3a05747efb67ea0313c635e10bda47a2"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "async_io_stream"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b6d7b9decdf35d8908a7e3ef02f64c5e9b1695e230154c0e8de3969142d9b94c"
+dependencies = [
+ "futures",
+ "pharos",
+ "rustc_version 0.4.0",
+]
+
 [[package]]
 name = "atty"
 version = "0.2.14"
@@ -237,6 +297,30 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "auto_impl"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7862e21c893d65a1650125d157eaeec691439379a1cee17ee49031b79236ada4"
+dependencies = [
+ "proc-macro-error",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "auto_impl"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8a8c1df849285fbacd587de7818cc7d13be6cd2cbcd47a04fb1801b0e2706e33"
+dependencies = [
+ "proc-macro-error",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "autocfg"
 version = "1.1.0"
@@ -258,12 +342,95 @@ dependencies = [
  "rustc-demangle",
 ]
 
+[[package]]
+name = "base16ct"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "349a06037c7bf932dd7e7d1f653678b2038b9ad46a74102f1fc7bd7872678cce"
+
+[[package]]
+name = "base58"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5024ee8015f02155eee35c711107ddd9a9bf3cb689cf2a9089c97e79b6e1ae83"
+
+[[package]]
+name = "base58check"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2ee2fe4c9a0c84515f136aaae2466744a721af6d63339c18689d9e995d74d99b"
+dependencies = [
+ "base58",
+ "sha2 0.8.2",
+]
+
+[[package]]
+name = "base64"
+version = "0.12.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3441f0f7b02788e948e47f457ca01f1d7e6d92c693bc132c22b087d3141c03ff"
+
+[[package]]
+name = "base64"
+version = "0.13.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9e1b586273c5702936fe7b7d6896644d8be71e6314cfe09d3167c95f712589e8"
+
+[[package]]
+name = "base64"
+version = "0.21.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a4a4ddaa51a5bc52a6948f74c06d20aaaddb71924eab79b8c97a8c556e942d6a"
+
+[[package]]
+name = "base64ct"
+version = "1.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b645a089122eccb6111b4f81cbc1a49f5900ac4666bb93ac027feaecf15607bf"
+
+[[package]]
+name = "bech32"
+version = "0.7.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2dabbe35f96fb9507f7330793dc490461b2962659ac5d427181e451a623751d1"
+
+[[package]]
+name = "bincode"
+version = "1.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b1f45e9417d87227c7a56d22e471c6206462cba514c7590c09aff4cf6d1ddcad"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "bitflags"
 version = "1.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
+[[package]]
+name = "bitvec"
+version = "0.17.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "41262f11d771fd4a61aa3ce019fca363b4b6c282fca9da2a31186d3965a47a5c"
+dependencies = [
+ "either",
+ "radium 0.3.0",
+]
+
+[[package]]
+name = "bitvec"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1bc2832c24239b0141d5674bb9174f9d68a8b5b3f2753311927c172ca46f7e9c"
+dependencies = [
+ "funty",
+ "radium 0.7.0",
+ "tap",
+ "wyz",
+]
+
 [[package]]
 name = "blake2"
 version = "0.9.2"
@@ -271,10 +438,55 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0a4e37d16930f5459780f5621038b6382b9bb37c19016f39fb6b5808d831f174"
 dependencies = [
  "crypto-mac",
- "digest",
- "opaque-debug",
+ "digest 0.9.0",
+ "opaque-debug 0.3.0",
+]
+
+[[package]]
+name = "blake2"
+version = "0.10.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "46502ad458c9a52b69d4d4d32775c788b7a1b85e8bc9d482d92250fc0e3f8efe"
+dependencies = [
+ "digest 0.10.6",
+]
+
+[[package]]
+name = "block-buffer"
+version = "0.7.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c0940dc441f31689269e10ac70eb1002a3a1d3ad1390e030043662eb7fe4688b"
+dependencies = [
+ "block-padding",
+ "byte-tools",
+ "byteorder",
+ "generic-array 0.12.4",
+]
+
+[[package]]
+name = "block-buffer"
+version = "0.10.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "69cce20737498f97b993470a6e536b8523f0af7892a4f928cceb1ac5e52ebe7e"
+dependencies = [
+ "generic-array 0.14.6",
+]
+
+[[package]]
+name = "block-padding"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fa79dedbb091f449f1f39e53edf88d5dbe95f895dae6135a8d7b881fb5af73f5"
+dependencies = [
+ "byte-tools",
 ]
 
+[[package]]
+name = "bs58"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "771fe0050b883fcc3ea2359b1a96bcfbc090b7116eae7c3c512c7a083fdf23d3"
+
 [[package]]
 name = "bstr"
 version = "0.2.17"
@@ -293,6 +505,18 @@ version = "3.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c1ad822118d20d2c234f427000d5acc36eabe1e29a348c89b63dd60b13f28e5d"
 
+[[package]]
+name = "byte-slice-cast"
+version = "1.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c3ac9f8b63eca6fd385229b3675f6cc0dc5c8a5c8a54a59d4f52ffd670d87b0c"
+
+[[package]]
+name = "byte-tools"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e3b5ca7a04898ad4bcd41c90c5285445ff5b791899bb1b0abdd2a2aa791211d7"
+
 [[package]]
 name = "bytecheck"
 version = "0.6.9"
@@ -320,6 +544,47 @@ version = "1.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "14c189c53d098945499cdfa7ecc63567cf3886b3332b312a5b4585d8d3a6a610"
 
+[[package]]
+name = "bytes"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "89b2fd2a0dcf38d7971e2194b6b6eebab45ae01067456a7fd93d5547a61b70be"
+dependencies = [
+ "serde",
+]
+
+[[package]]
+name = "camino"
+version = "1.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c77df041dc383319cc661b428b6961a005db4d6808d5e12536931b1ca9556055"
+dependencies = [
+ "serde",
+]
+
+[[package]]
+name = "cargo-platform"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cbdb825da8a5df079a43676dbe042702f1707b1109f713a01420fbb4cc71fa27"
+dependencies = [
+ "serde",
+]
+
+[[package]]
+name = "cargo_metadata"
+version = "0.15.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "08a1ec454bc3eead8719cb56e15dbbfecdbc14e4b3a3ae4936cc6e31f5fc0d07"
+dependencies = [
+ "camino",
+ "cargo-platform",
+ "semver 1.0.16",
+ "serde",
+ "serde_json",
+ "thiserror",
+]
+
 [[package]]
 name = "cast"
 version = "0.3.0"
@@ -338,6 +603,26 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "chrono"
+version = "0.4.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "16b0a3d9ed01224b22057780a37bb8c5dbfe1be8ba48678e7bf57ec4b385411f"
+dependencies = [
+ "num-integer",
+ "num-traits",
+]
+
+[[package]]
+name = "cipher"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d1873270f8f7942c191139cb8a40fd228da6c3fd2fc376d7e92d47aa14aeb59e"
+dependencies = [
+ "crypto-common",
+ "inout",
+]
+
 [[package]]
 name = "clap"
 version = "2.34.0"
@@ -349,11 +634,68 @@ dependencies = [
  "unicode-width",
 ]
 
+[[package]]
+name = "coins-bip32"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "634c509653de24b439672164bbf56f5f582a2ab0e313d3b0f6af0b7345cf2560"
+dependencies = [
+ "bincode",
+ "bs58",
+ "coins-core",
+ "digest 0.10.6",
+ "getrandom",
+ "hmac",
+ "k256",
+ "lazy_static",
+ "serde",
+ "sha2 0.10.6",
+ "thiserror",
+]
+
+[[package]]
+name = "coins-bip39"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2a11892bcac83b4c6e95ab84b5b06c76d9d70ad73548dd07418269c5c7977171"
+dependencies = [
+ "bitvec 0.17.4",
+ "coins-bip32",
+ "getrandom",
+ "hex",
+ "hmac",
+ "pbkdf2",
+ "rand",
+ "sha2 0.10.6",
+ "thiserror",
+]
+
+[[package]]
+name = "coins-core"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c94090a6663f224feae66ab01e41a2555a8296ee07b5f20dab8888bdefc9f617"
+dependencies = [
+ "base58check",
+ "base64 0.12.3",
+ "bech32",
+ "blake2 0.10.6",
+ "digest 0.10.6",
+ "generic-array 0.14.6",
+ "hex",
+ "ripemd",
+ "serde",
+ "serde_derive",
+ "sha2 0.10.6",
+ "sha3",
+ "thiserror",
+]
+
 [[package]]
 name = "color-eyre"
-version = "0.5.11"
+version = "0.6.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1f1885697ee8a177096d42f158922251a41973117f6d8a234cee94b9509157b7"
+checksum = "5a667583cca8c4f8436db8de46ea8233c42a7d9ae424a82d338f2e4675229204"
 dependencies = [
  "backtrace",
  "color-spantrace",
@@ -366,9 +708,9 @@ dependencies = [
 
 [[package]]
 name = "color-spantrace"
-version = "0.1.6"
+version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b6eee477a4a8a72f4addd4de416eb56d54bc307b284d6601bafdee1f4ea462d1"
+checksum = "1ba75b3d9449ecdccb27ecbc479fdc0b87fa2dd43d2f8298f9bf0e59aacc8dce"
 dependencies = [
  "once_cell",
  "owo-colors",
@@ -376,6 +718,21 @@ dependencies = [
  "tracing-error",
 ]
 
+[[package]]
+name = "const-oid"
+version = "0.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cec318a675afcb6a1ea1d4340e2d377e56e47c266f28043ceccbf4412ddfdd3b"
+
+[[package]]
+name = "convert_case"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ec182b0ca2f35d8fc196cf3404988fd8b8c739a4d270ff118a398feb0cbec1ca"
+dependencies = [
+ "unicode-segmentation",
+]
+
 [[package]]
 name = "corosensei"
 version = "0.1.3"
@@ -386,7 +743,16 @@ dependencies = [
  "cfg-if",
  "libc",
  "scopeguard",
- "windows-sys",
+ "windows-sys 0.33.0",
+]
+
+[[package]]
+name = "cpufeatures"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "28d997bd5e24a5928dd43e46dc529867e207907fe0b239c3477d924f7f2ca320"
+dependencies = [
+ "libc",
 ]
 
 [[package]]
@@ -538,13 +904,41 @@ dependencies = [
  "once_cell",
 ]
 
+[[package]]
+name = "crunchy"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7a81dae078cea95a014a339291cec439d2f232ebe854a9d672b796c6afafa9b7"
+
+[[package]]
+name = "crypto-bigint"
+version = "0.4.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ef2b4b23cddf68b89b8f8069890e8c270d54e2d5fe1b143820234805e4cb17ef"
+dependencies = [
+ "generic-array 0.14.6",
+ "rand_core",
+ "subtle",
+ "zeroize",
+]
+
+[[package]]
+name = "crypto-common"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1bfb12502f3fc46cca1bb51ac28df9d618d813cdc3d2f25b9fe775a34af26bb3"
+dependencies = [
+ "generic-array 0.14.6",
+ "typenum",
+]
+
 [[package]]
 name = "crypto-mac"
 version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b584a330336237c1eecd3e94266efb216c56ed91225d634cb2991c5f3fd1aeab"
 dependencies = [
- "generic-array",
+ "generic-array 0.14.6",
  "subtle",
 ]
 
@@ -570,6 +964,15 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "ctr"
+version = "0.9.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0369ee1ad671834580515889b80f2ea915f23b8be8d0daa4bbaf2ac5c7590835"
+dependencies = [
+ "cipher",
+]
+
 [[package]]
 name = "darling"
 version = "0.13.4"
@@ -604,6 +1007,16 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "der"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f1a467a65c5e759bce6e65eaf91cc29f466cdc57cb65777bd646872a8a1fd4de"
+dependencies = [
+ "const-oid",
+ "zeroize",
+]
+
 [[package]]
 name = "derivative"
 version = "2.2.0"
@@ -615,13 +1028,62 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "derive_more"
+version = "0.99.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4fb810d30a7c1953f91334de7244731fc3f3c10d7fe163338a35b9f640960321"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "digest"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f3d0c8c8752312f9713efd397ff63acb9f85585afbf179282e720e7704954dd5"
+dependencies = [
+ "generic-array 0.12.4",
+]
+
 [[package]]
 name = "digest"
 version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d3dd60d1080a57a05ab032377049e0591415d2b31afd7028356dbf3cc6dcb066"
 dependencies = [
- "generic-array",
+ "generic-array 0.14.6",
+]
+
+[[package]]
+name = "digest"
+version = "0.10.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8168378f4e5023e7218c89c891c0fd8ecdb5e5e4f18cb78f38cf245dd021e76f"
+dependencies = [
+ "block-buffer 0.10.3",
+ "crypto-common",
+ "subtle",
+]
+
+[[package]]
+name = "dunce"
+version = "1.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0bd4b30a6560bbd9b4620f4de34c3f14f60848e58a9b7216801afcb4c7b31c3c"
+
+[[package]]
+name = "ecdsa"
+version = "0.14.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "413301934810f597c1d19ca71c8710e99a3f1ba28a0d2ebc01551a2daeea3c5c"
+dependencies = [
+ "der",
+ "elliptic-curve",
+ "rfc6979",
+ "signature",
 ]
 
 [[package]]
@@ -630,6 +1092,54 @@ version = "1.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "90e5c1c8368803113bf0c9584fc495a58b86dc8a29edbf8fe877d21d9507e797"
 
+[[package]]
+name = "elliptic-curve"
+version = "0.12.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e7bb888ab5300a19b8e5bceef25ac745ad065f3c9f7efc6de1b91958110891d3"
+dependencies = [
+ "base16ct",
+ "crypto-bigint",
+ "der",
+ "digest 0.10.6",
+ "ff",
+ "generic-array 0.14.6",
+ "group",
+ "pkcs8",
+ "rand_core",
+ "sec1",
+ "subtle",
+ "zeroize",
+]
+
+[[package]]
+name = "encoding_rs"
+version = "0.8.32"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "071a31f4ee85403370b58aca746f01041ede6f0da2730960ad001edc2b71b394"
+dependencies = [
+ "cfg-if",
+]
+
+[[package]]
+name = "enr"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "492a7e5fc2504d5fdce8e124d3e263b244a68b283cac67a69eda0cd43e0aebad"
+dependencies = [
+ "base64 0.13.1",
+ "bs58",
+ "bytes",
+ "hex",
+ "k256",
+ "log",
+ "rand",
+ "rlp",
+ "serde",
+ "sha3",
+ "zeroize",
+]
+
 [[package]]
 name = "enum-iterator"
 version = "0.7.0"
@@ -671,6 +1181,283 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "eth-keystore"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1fda3bf123be441da5260717e0661c25a2fd9cb2b2c1d20bf2e05580047158ab"
+dependencies = [
+ "aes",
+ "ctr",
+ "digest 0.10.6",
+ "hex",
+ "hmac",
+ "pbkdf2",
+ "rand",
+ "scrypt",
+ "serde",
+ "serde_json",
+ "sha2 0.10.6",
+ "sha3",
+ "thiserror",
+ "uuid",
+]
+
+[[package]]
+name = "ethabi"
+version = "18.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7413c5f74cc903ea37386a8965a936cbeb334bd270862fdece542c1b2dcbc898"
+dependencies = [
+ "ethereum-types",
+ "hex",
+ "once_cell",
+ "regex",
+ "serde",
+ "serde_json",
+ "sha3",
+ "thiserror",
+ "uint",
+]
+
+[[package]]
+name = "ethbloom"
+version = "0.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c22d4b5885b6aa2fe5e8b9329fb8d232bf739e434e6b87347c63bdd00c120f60"
+dependencies = [
+ "crunchy",
+ "fixed-hash",
+ "impl-codec",
+ "impl-rlp",
+ "impl-serde",
+ "scale-info",
+ "tiny-keccak",
+]
+
+[[package]]
+name = "ethereum-types"
+version = "0.14.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "02d215cbf040552efcbe99a38372fe80ab9d00268e20012b79fcd0f073edd8ee"
+dependencies = [
+ "ethbloom",
+ "fixed-hash",
+ "impl-codec",
+ "impl-rlp",
+ "impl-serde",
+ "primitive-types",
+ "scale-info",
+ "uint",
+]
+
+[[package]]
+name = "ethers"
+version = "1.0.2"
+source = "git+https://github.com/gakonst/ethers-rs#e20bb715699280402c155a0abbfc82656582242e"
+dependencies = [
+ "ethers-addressbook",
+ "ethers-contract",
+ "ethers-core",
+ "ethers-etherscan",
+ "ethers-middleware",
+ "ethers-providers",
+ "ethers-signers",
+]
+
+[[package]]
+name = "ethers-addressbook"
+version = "1.0.2"
+source = "git+https://github.com/gakonst/ethers-rs#e20bb715699280402c155a0abbfc82656582242e"
+dependencies = [
+ "ethers-core",
+ "once_cell",
+ "serde",
+ "serde_json",
+]
+
+[[package]]
+name = "ethers-contract"
+version = "1.0.2"
+source = "git+https://github.com/gakonst/ethers-rs#e20bb715699280402c155a0abbfc82656582242e"
+dependencies = [
+ "ethers-contract-abigen",
+ "ethers-contract-derive",
+ "ethers-core",
+ "ethers-providers",
+ "futures-util",
+ "hex",
+ "once_cell",
+ "pin-project",
+ "serde",
+ "serde_json",
+ "thiserror",
+]
+
+[[package]]
+name = "ethers-contract-abigen"
+version = "1.0.2"
+source = "git+https://github.com/gakonst/ethers-rs#e20bb715699280402c155a0abbfc82656582242e"
+dependencies = [
+ "Inflector",
+ "cfg-if",
+ "dunce",
+ "ethers-core",
+ "eyre",
+ "getrandom",
+ "hex",
+ "prettyplease",
+ "proc-macro2",
+ "quote",
+ "regex",
+ "reqwest",
+ "serde",
+ "serde_json",
+ "syn",
+ "toml",
+ "walkdir",
+]
+
+[[package]]
+name = "ethers-contract-derive"
+version = "1.0.2"
+source = "git+https://github.com/gakonst/ethers-rs#e20bb715699280402c155a0abbfc82656582242e"
+dependencies = [
+ "ethers-contract-abigen",
+ "ethers-core",
+ "hex",
+ "proc-macro2",
+ "quote",
+ "serde_json",
+ "syn",
+]
+
+[[package]]
+name = "ethers-core"
+version = "1.0.2"
+source = "git+https://github.com/gakonst/ethers-rs#e20bb715699280402c155a0abbfc82656582242e"
+dependencies = [
+ "arrayvec",
+ "bytes",
+ "cargo_metadata",
+ "chrono",
+ "convert_case",
+ "elliptic-curve",
+ "ethabi",
+ "generic-array 0.14.6",
+ "getrandom",
+ "hex",
+ "k256",
+ "num_enum",
+ "once_cell",
+ "open-fastrlp",
+ "proc-macro2",
+ "rand",
+ "rlp",
+ "rlp-derive",
+ "serde",
+ "serde_json",
+ "strum",
+ "syn",
+ "tempfile",
+ "thiserror",
+ "tiny-keccak",
+ "unicode-xid",
+]
+
+[[package]]
+name = "ethers-etherscan"
+version = "1.0.2"
+source = "git+https://github.com/gakonst/ethers-rs#e20bb715699280402c155a0abbfc82656582242e"
+dependencies = [
+ "ethers-core",
+ "getrandom",
+ "reqwest",
+ "semver 1.0.16",
+ "serde",
+ "serde-aux",
+ "serde_json",
+ "thiserror",
+ "tracing",
+]
+
+[[package]]
+name = "ethers-middleware"
+version = "1.0.2"
+source = "git+https://github.com/gakonst/ethers-rs#e20bb715699280402c155a0abbfc82656582242e"
+dependencies = [
+ "async-trait",
+ "auto_impl 0.5.0",
+ "ethers-contract",
+ "ethers-core",
+ "ethers-etherscan",
+ "ethers-providers",
+ "ethers-signers",
+ "futures-locks",
+ "futures-util",
+ "instant",
+ "reqwest",
+ "serde",
+ "serde_json",
+ "thiserror",
+ "tokio",
+ "tracing",
+ "tracing-futures",
+ "url",
+]
+
+[[package]]
+name = "ethers-providers"
+version = "1.0.2"
+source = "git+https://github.com/gakonst/ethers-rs#e20bb715699280402c155a0abbfc82656582242e"
+dependencies = [
+ "async-trait",
+ "auto_impl 1.0.1",
+ "base64 0.21.0",
+ "enr",
+ "ethers-core",
+ "futures-core",
+ "futures-timer",
+ "futures-util",
+ "getrandom",
+ "hashers",
+ "hex",
+ "http",
+ "once_cell",
+ "parking_lot",
+ "pin-project",
+ "reqwest",
+ "serde",
+ "serde_json",
+ "thiserror",
+ "tokio",
+ "tracing",
+ "tracing-futures",
+ "url",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "wasm-timer",
+ "web-sys",
+ "ws_stream_wasm",
+]
+
+[[package]]
+name = "ethers-signers"
+version = "1.0.2"
+source = "git+https://github.com/gakonst/ethers-rs#e20bb715699280402c155a0abbfc82656582242e"
+dependencies = [
+ "async-trait",
+ "coins-bip32",
+ "coins-bip39",
+ "elliptic-curve",
+ "eth-keystore",
+ "ethers-core",
+ "hex",
+ "rand",
+ "sha2 0.10.6",
+ "thiserror",
+]
+
 [[package]]
 name = "eyre"
 version = "0.6.8"
@@ -681,6 +1468,12 @@ dependencies = [
  "once_cell",
 ]
 
+[[package]]
+name = "fake-simd"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e88a8acf291dafb59c2d96e8f59828f3838bb1a70398823ade51a84de6a6deed"
+
 [[package]]
 name = "fallible-iterator"
 version = "0.2.0"
@@ -697,10 +1490,170 @@ dependencies = [
 ]
 
 [[package]]
-name = "fnv"
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+ "cfg-if",
+ "instant",
+ "libc",
+ "redox_syscall",
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+ "winapi",
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+checksum = "7676374caaee8a325c9e7a2ae557f216c5563a171d6997b0ef8a65af35147700"
 dependencies = [
- "memchr",
+ "base64ct",
+ "rand_core",
+ "subtle",
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+name = "paste"
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+dependencies = [
+ "digest 0.10.6",
+ "hmac",
+ "password-hash",
+ "sha2 0.10.6",
+]
 
 [[package]]
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+name = "percent-encoding"
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-checksum = "624a8340c38c1b80fd549087862da4ba43e08858af025b236e509b6649fc13d5"
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-checksum = "2386b4ebe91c2f7f51082d4cefa145d030e33a1842a96b12e4885cc3c01f7a55"
+checksum = "4b0560d531d1febc25a3c9398a62a71256c0178f2e3443baedd9ad4bb8c9deb4"
+dependencies = [
+ "thiserror",
+ "ucd-trie",
+]
 
 [[package]]
-name = "paste"
-version = "1.0.8"
+name = "pharos"
+version = "0.5.3"
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-checksum = "9423e2b32f7a043629287a536f21951e8c6a82482d0acb1eeebfc90bc2225b22"
+checksum = "e9567389417feee6ce15dd6527a8a1ecac205ef62c2932bcf3d9f6fc5b78b414"
+dependencies = [
+ "futures",
+ "rustc_version 0.4.0",
+]
 
 [[package]]
-name = "pest"
-version = "2.3.0"
+name = "pin-project"
+version = "1.0.12"
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-checksum = "4b0560d531d1febc25a3c9398a62a71256c0178f2e3443baedd9ad4bb8c9deb4"
+checksum = "ad29a609b6bcd67fee905812e544992d216af9d755757c05ed2d0e15a74c6ecc"
 dependencies = [
- "thiserror",
- "ucd-trie",
+ "pin-project-internal",
+]
+
+[[package]]
+name = "pin-project-internal"
+version = "1.0.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "069bdb1e05adc7a8990dce9cc75370895fbe4e3d58b9b73bf1aee56359344a55"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
 ]
 
 [[package]]
@@ -1114,6 +2481,22 @@ version = "0.2.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e0a7ae3ac2f1173085d398531c705756c94a4c56843785df85a60c1a0afac116"
 
+[[package]]
+name = "pin-utils"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
+
+[[package]]
+name = "pkcs8"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9eca2c590a5f85da82668fa685c09ce2888b9430e83299debf1f34b65fd4a4ba"
+dependencies = [
+ "der",
+ "spki",
+]
+
 [[package]]
 name = "plotters"
 version = "0.3.3"
@@ -1148,6 +2531,40 @@ version = "0.2.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "eb9f9e6e233e5c4a35559a617bf40a4ec447db2e84c20b55a6f83167b7e57872"
 
+[[package]]
+name = "prettyplease"
+version = "0.1.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e97e3215779627f01ee256d2fad52f3d95e8e1c11e9fc6fd08f7cd455d5d5c78"
+dependencies = [
+ "proc-macro2",
+ "syn",
+]
+
+[[package]]
+name = "primitive-types"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9f3486ccba82358b11a77516035647c34ba167dfa53312630de83b12bd4f3d66"
+dependencies = [
+ "fixed-hash",
+ "impl-codec",
+ "impl-rlp",
+ "impl-serde",
+ "scale-info",
+ "uint",
+]
+
+[[package]]
+name = "proc-macro-crate"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "66618389e4ec1c7afe67d51a9bf34ff9236480f8d51e7489b7d5ab0303c13f34"
+dependencies = [
+ "once_cell",
+ "toml_edit",
+]
+
 [[package]]
 name = "proc-macro-error"
 version = "1.0.4"
@@ -1180,9 +2597,9 @@ checksum = "dbf0c48bc1d91375ae5c3cd81e3722dff1abcf81a30960240640d223f59fe0e5"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.43"
+version = "1.0.51"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0a2ca2c61bc9f3d74d2886294ab7b9853abd9c1ad903a3ac7815c58989bb7bab"
+checksum = "5d727cae5b39d21da60fa540906919ad737832fe0b1c165da3a34d6548c849d6"
 dependencies = [
  "unicode-ident",
 ]
@@ -1216,12 +2633,25 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "radium"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "def50a86306165861203e7f84ecffbbdfdea79f0e51039b33de1e952358c47ac"
+
+[[package]]
+name = "radium"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dc33ff2d4973d518d823d61aa239014831e521c75da58e3df4840d3f47749d09"
+
 [[package]]
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 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
 dependencies = [
+ "libc",
  "rand_chacha",
  "rand_core",
 ]
@@ -1241,6 +2671,9 @@ name = "rand_core"
 version = "0.6.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d34f1408f55294453790c48b2f1ebbb1c5b4b7563eb1f418bcfcfdbb06ebb4e7"
+dependencies = [
+ "getrandom",
+]
 
 [[package]]
 name = "rayon"
@@ -1292,6 +2725,8 @@ version = "1.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4c4eb3267174b8c6c2f654116623910a0fef09c4753f8dd83db29c48a0df988b"
 dependencies = [
+ "aho-corasick",
+ "memchr",
  "regex-syntax",
 ]
 
@@ -1337,6 +2772,80 @@ dependencies = [
  "bytecheck",
 ]
 
+[[package]]
+name = "reqwest"
+version = "0.11.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "21eed90ec8570952d53b772ecf8f206aa1ec9a3d76b2521c56c42973f2d91ee9"
+dependencies = [
+ "base64 0.21.0",
+ "bytes",
+ "encoding_rs",
+ "futures-core",
+ "futures-util",
+ "h2",
+ "http",
+ "http-body",
+ "hyper",
+ "hyper-rustls",
+ "ipnet",
+ "js-sys",
+ "log",
+ "mime",
+ "once_cell",
+ "percent-encoding",
+ "pin-project-lite",
+ "rustls",
+ "rustls-pemfile",
+ "serde",
+ "serde_json",
+ "serde_urlencoded",
+ "tokio",
+ "tokio-rustls",
+ "tower-service",
+ "url",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "web-sys",
+ "webpki-roots",
+ "winreg",
+]
+
+[[package]]
+name = "rfc6979"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7743f17af12fa0b03b803ba12cd6a8d9483a587e89c69445e3909655c0b9fabb"
+dependencies = [
+ "crypto-bigint",
+ "hmac",
+ "zeroize",
+]
+
+[[package]]
+name = "ring"
+version = "0.16.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3053cf52e236a3ed746dfc745aa9cacf1b791d846bdaf412f60a8d7d6e17c8fc"
+dependencies = [
+ "cc",
+ "libc",
+ "once_cell",
+ "spin",
+ "untrusted",
+ "web-sys",
+ "winapi",
+]
+
+[[package]]
+name = "ripemd"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bd124222d17ad93a644ed9d011a40f4fb64aa54275c08cc216524a9ea82fb09f"
+dependencies = [
+ "digest 0.10.6",
+]
+
 [[package]]
 name = "rkyv"
 version = "0.7.39"
@@ -1362,6 +2871,27 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "rlp"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bb919243f34364b6bd2fc10ef797edbfa75f33c252e7998527479c6d6b47e1ec"
+dependencies = [
+ "bytes",
+ "rustc-hex",
+]
+
+[[package]]
+name = "rlp-derive"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e33d7b2abe0c340d8797fe2907d3f20d3b5ea5908683618bfe80df7f621f672a"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "rustc-demangle"
 version = "0.1.21"
@@ -1374,13 +2904,49 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "08d43f7aa6b08d49f382cde6a7982047c3426db949b1424bc4b7ec9ae12c6ce2"
 
+[[package]]
+name = "rustc-hex"
+version = "2.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3e75f6a532d0fd9f7f13144f392b6ad56a32696bfcd9c78f797f16bbb6f072d6"
+
 [[package]]
 name = "rustc_version"
 version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f0dfe2087c51c460008730de8b57e6a320782fbfb312e1f4d520e6c6fae155ee"
 dependencies = [
- "semver",
+ "semver 0.11.0",
+]
+
+[[package]]
+name = "rustc_version"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bfa0f585226d2e68097d4f95d113b15b83a82e819ab25717ec0590d9584ef366"
+dependencies = [
+ "semver 1.0.16",
+]
+
+[[package]]
+name = "rustls"
+version = "0.20.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fff78fc74d175294f4e83b28343315ffcfb114b156f0185e9741cb5570f50e2f"
+dependencies = [
+ "log",
+ "ring",
+ "sct",
+ "webpki",
+]
+
+[[package]]
+name = "rustls-pemfile"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d194b56d58803a43635bdc398cd17e383d6f71f9182b9a192c127ca42494a59b"
+dependencies = [
+ "base64 0.21.0",
 ]
 
 [[package]]
@@ -1395,6 +2961,15 @@ version = "1.0.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4501abdff3ae82a1c1b477a17252eb69cee9e66eb915c1abaa4f44d873df9f09"
 
+[[package]]
+name = "salsa20"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "97a22f5af31f73a954c10289c93e8a50cc23d971e80ee446f1f6f7137a088213"
+dependencies = [
+ "cipher",
+]
+
 [[package]]
 name = "same-file"
 version = "1.0.6"
@@ -1404,18 +2979,78 @@ dependencies = [
  "winapi-util",
 ]
 
+[[package]]
+name = "scale-info"
+version = "2.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "001cf62ece89779fd16105b5f515ad0e5cedcd5440d3dd806bb067978e7c3608"
+dependencies = [
+ "cfg-if",
+ "derive_more",
+ "parity-scale-codec",
+ "scale-info-derive",
+]
+
+[[package]]
+name = "scale-info-derive"
+version = "2.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "303959cf613a6f6efd19ed4b4ad5bf79966a13352716299ad532cfb115f4205c"
+dependencies = [
+ "proc-macro-crate",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "scopeguard"
 version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
 
+[[package]]
+name = "scrypt"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9f9e24d2b632954ded8ab2ef9fea0a0c769ea56ea98bddbafbad22caeeadf45d"
+dependencies = [
+ "hmac",
+ "pbkdf2",
+ "salsa20",
+ "sha2 0.10.6",
+]
+
+[[package]]
+name = "sct"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d53dcdb7c9f8158937a7981b48accfd39a43af418591a5d008c7b22b5e1b7ca4"
+dependencies = [
+ "ring",
+ "untrusted",
+]
+
 [[package]]
 name = "seahash"
 version = "4.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1c107b6f4780854c8b126e228ea8869f4d7b71260f962fefb57b996b8959ba6b"
 
+[[package]]
+name = "sec1"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3be24c1842290c45df0a7bf069e0c268a747ad05a192f2fd7dcfdbc1cba40928"
+dependencies = [
+ "base16ct",
+ "der",
+ "generic-array 0.14.6",
+ "pkcs8",
+ "subtle",
+ "zeroize",
+]
+
 [[package]]
 name = "semver"
 version = "0.11.0"
@@ -1425,6 +3060,15 @@ dependencies = [
  "semver-parser",
 ]
 
+[[package]]
+name = "semver"
+version = "1.0.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "58bc9567378fc7690d6b2addae4e60ac2eeea07becb2c64b9f218b53865cba2a"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "semver-parser"
 version = "0.10.2"
@@ -1434,6 +3078,12 @@ dependencies = [
  "pest",
 ]
 
+[[package]]
+name = "send_wrapper"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cd0b0ec5f1c1ca621c432a25813d8d60c88abe6d3e08a3eb9cf37d97a0fe3d73"
+
 [[package]]
 name = "serde"
 version = "1.0.144"
@@ -1443,6 +3093,16 @@ dependencies = [
  "serde_derive",
 ]
 
+[[package]]
+name = "serde-aux"
+version = "4.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c599b3fd89a75e0c18d6d2be693ddb12cccaf771db4ff9e39097104808a014c0"
+dependencies = [
+ "serde",
+ "serde_json",
+]
+
 [[package]]
 name = "serde_bytes"
 version = "0.11.7"
@@ -1466,22 +3126,67 @@ dependencies = [
 name = "serde_derive"
 version = "1.0.144"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "94ed3a816fb1d101812f83e789f888322c34e291f894f19590dc310963e87a00"
+checksum = "94ed3a816fb1d101812f83e789f888322c34e291f894f19590dc310963e87a00"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "serde_json"
+version = "1.0.85"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e55a28e3aaef9d5ce0506d0a14dbba8054ddc7e499ef522dd8b26859ec9d4a44"
+dependencies = [
+ "itoa 1.0.3",
+ "ryu",
+ "serde",
+]
+
+[[package]]
+name = "serde_urlencoded"
+version = "0.7.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d3491c14715ca2294c4d6a88f15e84739788c1d030eed8c110436aafdaa2f3fd"
+dependencies = [
+ "form_urlencoded",
+ "itoa 1.0.3",
+ "ryu",
+ "serde",
+]
+
+[[package]]
+name = "sha2"
+version = "0.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a256f46ea78a0c0d9ff00077504903ac881a1dafdc20da66545699e7776b3e69"
+dependencies = [
+ "block-buffer 0.7.3",
+ "digest 0.8.1",
+ "fake-simd",
+ "opaque-debug 0.2.3",
+]
+
+[[package]]
+name = "sha2"
+version = "0.10.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "82e6b795fe2e3b1e845bafcb27aa35405c4d47cdfc92af5fc8d3002f76cebdc0"
 dependencies = [
- "proc-macro2",
- "quote",
- "syn",
+ "cfg-if",
+ "cpufeatures",
+ "digest 0.10.6",
 ]
 
 [[package]]
-name = "serde_json"
-version = "1.0.85"
+name = "sha3"
+version = "0.10.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e55a28e3aaef9d5ce0506d0a14dbba8054ddc7e499ef522dd8b26859ec9d4a44"
+checksum = "bdf0c33fae925bdc080598b84bc15c55e7b9a4a43b3c704da051f977469691c9"
 dependencies = [
- "itoa 1.0.3",
- "ryu",
- "serde",
+ "digest 0.10.6",
+ "keccak",
 ]
 
 [[package]]
@@ -1493,18 +3198,91 @@ dependencies = [
  "lazy_static",
 ]
 
+[[package]]
+name = "signature"
+version = "1.6.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "74233d3b3b2f6d4b006dc19dee745e73e2a6bfb6f93607cd3b02bd5b00797d7c"
+dependencies = [
+ "digest 0.10.6",
+ "rand_core",
+]
+
+[[package]]
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+
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+ "heck",
+ "proc-macro2",
+ "quote",
+ "rustversion",
+ "syn",
+]
+
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@@ -1513,9 +3291,9 @@ checksum = "6bdef32e8150c2a081110b42772ffe7d7c9032b606bc226c8260fd97e0976601"
 
 [[package]]
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-version = "1.0.99"
+version = "1.0.107"
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-checksum = "58dbef6ec655055e20b86b15a8cc6d439cca19b667537ac6a1369572d151ab13"
+checksum = "1f4064b5b16e03ae50984a5a8ed5d4f8803e6bc1fd170a3cda91a1be4b18e3f5"
 dependencies = [
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@@ -1534,6 +3312,12 @@ dependencies = [
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+checksum = "55937e1799185b12863d447f42597ed69d9928686b8d88a1df17376a097d8369"
+
 [[package]]
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@@ -1565,18 +3349,18 @@ dependencies = [
 
 [[package]]
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-version = "1.0.32"
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-checksum = "f5f6586b7f764adc0231f4c79be7b920e766bb2f3e51b3661cdb263828f19994"
+checksum = "6a9cd18aa97d5c45c6603caea1da6628790b37f7a34b6ca89522331c5180fed0"
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 [[package]]
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-checksum = "12bafc5b54507e0149cdf1b145a5d80ab80a90bcd9275df43d4fff68460f6c21"
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 dependencies = [
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@@ -1592,6 +3376,15 @@ dependencies = [
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+checksum = "2c9d3793400a45f954c52e73d068316d76b6f4e36977e3fcebb13a2721e80237"
+dependencies = [
+ "crunchy",
+]
+
 [[package]]
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@@ -1602,15 +3395,37 @@ dependencies = [
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+dependencies = [
+ "tinyvec_macros",
+]
+
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+
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+checksum = "c8e00990ebabbe4c14c08aca901caed183ecd5c09562a12c824bb53d3c3fd3af"
 dependencies = [
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+ "bytes",
+ "libc",
+ "memchr",
+ "mio",
+ "num_cpus",
  "pin-project-lite",
+ "socket2",
  "tokio-macros",
+ "windows-sys 0.42.0",
 ]
 
 [[package]]
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+[[package]]
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+ "tokio",
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+ "bytes",
+ "futures-core",
+ "futures-sink",
+ "pin-project-lite",
+ "tokio",
+ "tracing",
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+
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+ "toml_datetime",
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+
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@@ -1639,9 +3511,9 @@ dependencies = [
 
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@@ -1650,9 +3522,9 @@ dependencies = [
 
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@@ -1660,12 +3532,22 @@ dependencies = [
 
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+checksum = "d686ec1c0f384b1277f097b2f279a2ecc11afe8c133c1aabf036a27cb4cd206e"
+dependencies = [
+ "tracing",
+ "tracing-subscriber 0.3.16",
+]
+
+[[package]]
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+checksum = "97d095ae15e245a057c8e8451bab9b3ee1e1f68e9ba2b4fbc18d0ac5237835f2"
 dependencies = [
+ "pin-project",
  "tracing",
- "tracing-subscriber",
 ]
 
 [[package]]
@@ -1673,12 +3555,27 @@ name = "tracing-subscriber"
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+dependencies = [
+ "tracing-core",
+]
+
+[[package]]
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+checksum = "3528ecfd12c466c6f163363caf2d02a71161dd5e1cc6ae7b34207ea2d42d81ed"
+
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@@ -1691,12 +3588,45 @@ version = "0.1.4"
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+ "static_assertions",
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+
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+
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@@ -1705,9 +3635,36 @@ checksum = "3ed742d4ea2bd1176e236172c8429aaf54486e7ac098db29ffe6529e0ce50973"
 
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+
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+
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+dependencies = [
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+ "idna",
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+dependencies = [
+ "getrandom",
+ "serde",
+]
 
 [[package]]
 name = "valuable"
@@ -1732,6 +3689,16 @@ dependencies = [
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 ]
 
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+dependencies = [
+ "log",
+ "try-lock",
+]
+
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@@ -1763,6 +3730,18 @@ dependencies = [
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 ]
 
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+dependencies = [
+ "cfg-if",
+ "js-sys",
+ "wasm-bindgen",
+ "web-sys",
+]
+
 [[package]]
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@@ -1801,6 +3780,21 @@ dependencies = [
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+dependencies = [
+ "futures",
+ "js-sys",
+ "parking_lot",
+ "pin-utils",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "web-sys",
+]
+
 [[package]]
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@@ -2069,6 +4063,25 @@ dependencies = [
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 ]
 
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+dependencies = [
+ "webpki",
+]
+
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- "windows_i686_gnu",
- "windows_i686_msvc",
- "windows_x86_64_gnu",
- "windows_x86_64_msvc",
+ "windows_aarch64_msvc 0.33.0",
+ "windows_i686_gnu 0.33.0",
+ "windows_i686_msvc 0.33.0",
+ "windows_x86_64_gnu 0.33.0",
+ "windows_x86_64_msvc 0.33.0",
+]
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+ "windows_i686_gnu 0.42.1",
+ "windows_i686_msvc 0.42.1",
+ "windows_x86_64_gnu 0.42.1",
+ "windows_x86_64_gnullvm",
+ "windows_x86_64_msvc 0.42.1",
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+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.42.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "628bfdf232daa22b0d64fdb62b09fcc36bb01f05a3939e20ab73aaf9470d0463"
+
 [[package]]
 name = "windows_x86_64_msvc"
 version = "0.33.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ff1e4aa646495048ec7f3ffddc411e1d829c026a2ec62b39da15c1055e406eaa"
 
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.42.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "447660ad36a13288b1db4d4248e857b510e8c3a225c822ba4fb748c0aafecffd"
+
+[[package]]
+name = "winreg"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "80d0f4e272c85def139476380b12f9ac60926689dd2e01d4923222f40580869d"
+dependencies = [
+ "winapi",
+]
+
+[[package]]
+name = "ws_stream_wasm"
+version = "0.7.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7999f5f4217fe3818726b66257a4475f71e74ffd190776ad053fa159e50737f5"
+dependencies = [
+ "async_io_stream",
+ "futures",
+ "js-sys",
+ "log",
+ "pharos",
+ "rustc_version 0.4.0",
+ "send_wrapper",
+ "thiserror",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "web-sys",
+]
+
+[[package]]
+name = "wyz"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "05f360fc0b24296329c78fda852a1e9ae82de9cf7b27dae4b7f62f118f77b9ed"
+dependencies = [
+ "tap",
+]
+
 [[package]]
 name = "zeroize"
 version = "1.5.7"
diff --git a/Cargo.toml b/Cargo.toml
index fb2c240..d338ac2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -25,9 +25,13 @@ ark-serialize = { version = "0.3.0", default-features = false }
 hex = "0.4.3"
 byteorder = "1.4.3"
 
+# ethereum compat
+ethers-core = { git = "https://github.com/gakonst/ethers-rs", default-features = false, optional = true }
+ethers = { git = "https://github.com/gakonst/ethers-rs", features = ["abigen"], optional = true }
+
 # error handling
 thiserror = "1.0.26"
-color-eyre = "0.5"
+color-eyre = "0.6.1"
 criterion = "0.3.4"
 
 cfg-if = "1.0"
@@ -44,3 +48,5 @@ harness = false
 [features]
 bench-complex-all = []
 circom-2 = []
+full = ["ethers", "ethers-core"]
+default = ["full"]
diff --git a/src/ethereum.rs b/src/ethereum.rs
new file mode 100644
index 0000000..de644cc
--- /dev/null
+++ b/src/ethereum.rs
@@ -0,0 +1,274 @@
+//! Helpers for converting Arkworks types to U256-tuples as expected by the
+//! Solidity Groth16 Verifier smart contracts
+use ark_ff::{BigInteger, FromBytes, PrimeField};
+use ethers_core::types::U256;
+use num_traits::Zero;
+
+use ark_bn254::{Bn254, Fq, Fq2, Fr, G1Affine, G2Affine};
+
+pub struct Inputs(pub Vec<U256>);
+
+impl From<&[Fr]> for Inputs {
+    fn from(src: &[Fr]) -> Self {
+        let els = src.iter().map(|point| point_to_u256(*point)).collect();
+
+        Self(els)
+    }
+}
+
+#[derive(Default, Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
+pub struct G1 {
+    pub x: U256,
+    pub y: U256,
+}
+
+impl From<G1> for G1Affine {
+    fn from(src: G1) -> G1Affine {
+        let x: Fq = u256_to_point(src.x);
+        let y: Fq = u256_to_point(src.y);
+        let inf = x.is_zero() && y.is_zero();
+        G1Affine::new(x, y, inf)
+    }
+}
+
+type G1Tup = (U256, U256);
+
+impl G1 {
+    pub fn as_tuple(&self) -> (U256, U256) {
+        (self.x, self.y)
+    }
+}
+
+impl From<&G1Affine> for G1 {
+    fn from(p: &G1Affine) -> Self {
+        Self {
+            x: point_to_u256(p.x),
+            y: point_to_u256(p.y),
+        }
+    }
+}
+
+#[derive(Default, Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
+pub struct G2 {
+    pub x: [U256; 2],
+    pub y: [U256; 2],
+}
+
+impl From<G2> for G2Affine {
+    fn from(src: G2) -> G2Affine {
+        let c0 = u256_to_point(src.x[0]);
+        let c1 = u256_to_point(src.x[1]);
+        let x = Fq2::new(c0, c1);
+
+        let c0 = u256_to_point(src.y[0]);
+        let c1 = u256_to_point(src.y[1]);
+        let y = Fq2::new(c0, c1);
+
+        let inf = x.is_zero() && y.is_zero();
+        G2Affine::new(x, y, inf)
+    }
+}
+
+type G2Tup = ([U256; 2], [U256; 2]);
+
+impl G2 {
+    // NB: Serialize the c1 limb first.
+    pub fn as_tuple(&self) -> G2Tup {
+        ([self.x[1], self.x[0]], [self.y[1], self.y[0]])
+    }
+}
+
+impl From<&G2Affine> for G2 {
+    fn from(p: &G2Affine) -> Self {
+        Self {
+            x: [point_to_u256(p.x.c0), point_to_u256(p.x.c1)],
+            y: [point_to_u256(p.y.c0), point_to_u256(p.y.c1)],
+        }
+    }
+}
+
+#[derive(Default, Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
+pub struct Proof {
+    pub a: G1,
+    pub b: G2,
+    pub c: G1,
+}
+
+impl Proof {
+    pub fn as_tuple(&self) -> (G1Tup, G2Tup, G1Tup) {
+        (self.a.as_tuple(), self.b.as_tuple(), self.c.as_tuple())
+    }
+}
+
+impl From<ark_groth16::Proof<Bn254>> for Proof {
+    fn from(proof: ark_groth16::Proof<Bn254>) -> Self {
+        Self {
+            a: G1::from(&proof.a),
+            b: G2::from(&proof.b),
+            c: G1::from(&proof.c),
+        }
+    }
+}
+
+impl From<Proof> for ark_groth16::Proof<Bn254> {
+    fn from(src: Proof) -> ark_groth16::Proof<Bn254> {
+        ark_groth16::Proof {
+            a: src.a.into(),
+            b: src.b.into(),
+            c: src.c.into(),
+        }
+    }
+}
+
+#[derive(Default, Clone, PartialEq, Eq, PartialOrd, Ord)]
+pub struct VerifyingKey {
+    pub alpha1: G1,
+    pub beta2: G2,
+    pub gamma2: G2,
+    pub delta2: G2,
+    pub ic: Vec<G1>,
+}
+
+impl VerifyingKey {
+    pub fn as_tuple(&self) -> (G1Tup, G2Tup, G2Tup, G2Tup, Vec<G1Tup>) {
+        (
+            self.alpha1.as_tuple(),
+            self.beta2.as_tuple(),
+            self.gamma2.as_tuple(),
+            self.delta2.as_tuple(),
+            self.ic.iter().map(|i| i.as_tuple()).collect(),
+        )
+    }
+}
+
+impl From<ark_groth16::VerifyingKey<Bn254>> for VerifyingKey {
+    fn from(vk: ark_groth16::VerifyingKey<Bn254>) -> Self {
+        Self {
+            alpha1: G1::from(&vk.alpha_g1),
+            beta2: G2::from(&vk.beta_g2),
+            gamma2: G2::from(&vk.gamma_g2),
+            delta2: G2::from(&vk.delta_g2),
+            ic: vk.gamma_abc_g1.iter().map(G1::from).collect(),
+        }
+    }
+}
+
+impl From<VerifyingKey> for ark_groth16::VerifyingKey<Bn254> {
+    fn from(src: VerifyingKey) -> ark_groth16::VerifyingKey<Bn254> {
+        ark_groth16::VerifyingKey {
+            alpha_g1: src.alpha1.into(),
+            beta_g2: src.beta2.into(),
+            gamma_g2: src.gamma2.into(),
+            delta_g2: src.delta2.into(),
+            gamma_abc_g1: src.ic.into_iter().map(Into::into).collect(),
+        }
+    }
+}
+
+// Helper for converting a PrimeField to its U256 representation for Ethereum compatibility
+fn u256_to_point<F: PrimeField>(point: U256) -> F {
+    let mut buf = [0; 32];
+    point.to_little_endian(&mut buf);
+    let bigint = F::BigInt::read(&buf[..]).expect("always works");
+    F::from_repr(bigint).expect("alwasy works")
+}
+
+// Helper for converting a PrimeField to its U256 representation for Ethereum compatibility
+// (U256 reads data as big endian)
+fn point_to_u256<F: PrimeField>(point: F) -> U256 {
+    let point = point.into_repr();
+    let point_bytes = point.to_bytes_be();
+    U256::from(&point_bytes[..])
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use ark_bn254::Fq;
+
+    fn fq() -> Fq {
+        Fq::from(2)
+    }
+
+    fn fq2() -> Fq2 {
+        Fq2::from(2)
+    }
+
+    fn fr() -> Fr {
+        Fr::from(2)
+    }
+
+    fn g1() -> G1Affine {
+        G1Affine::new(fq(), fq(), false)
+    }
+
+    fn g2() -> G2Affine {
+        G2Affine::new(fq2(), fq2(), false)
+    }
+
+    #[test]
+    fn convert_fq() {
+        let el = fq();
+        let el2 = point_to_u256(el);
+        let el3: Fq = u256_to_point(el2);
+        let el4 = point_to_u256(el3);
+        assert_eq!(el, el3);
+        assert_eq!(el2, el4);
+    }
+
+    #[test]
+    fn convert_fr() {
+        let el = fr();
+        let el2 = point_to_u256(el);
+        let el3: Fr = u256_to_point(el2);
+        let el4 = point_to_u256(el3);
+        assert_eq!(el, el3);
+        assert_eq!(el2, el4);
+    }
+
+    #[test]
+    fn convert_g1() {
+        let el = g1();
+        let el2 = G1::from(&el);
+        let el3: G1Affine = el2.into();
+        let el4 = G1::from(&el3);
+        assert_eq!(el, el3);
+        assert_eq!(el2, el4);
+    }
+
+    #[test]
+    fn convert_g2() {
+        let el = g2();
+        let el2 = G2::from(&el);
+        let el3: G2Affine = el2.into();
+        let el4 = G2::from(&el3);
+        assert_eq!(el, el3);
+        assert_eq!(el2, el4);
+    }
+
+    #[test]
+    fn convert_vk() {
+        let vk = ark_groth16::VerifyingKey::<Bn254> {
+            alpha_g1: g1(),
+            beta_g2: g2(),
+            gamma_g2: g2(),
+            delta_g2: g2(),
+            gamma_abc_g1: vec![g1(), g1(), g1()],
+        };
+        let vk_ethers = VerifyingKey::from(vk.clone());
+        let ark_vk: ark_groth16::VerifyingKey<Bn254> = vk_ethers.into();
+        assert_eq!(ark_vk, vk);
+    }
+
+    #[test]
+    fn convert_proof() {
+        let p = ark_groth16::Proof::<Bn254> {
+            a: g1(),
+            b: g2(),
+            c: g1(),
+        };
+        let p2 = Proof::from(p.clone());
+        let p3 = ark_groth16::Proof::from(p2);
+        assert_eq!(p, p3);
+    }
+}
diff --git a/src/lib.rs b/src/lib.rs
index af8ff88..124a412 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -7,5 +7,8 @@ pub use witness::WitnessCalculator;
 pub mod circom;
 pub use circom::{CircomBuilder, CircomCircuit, CircomConfig, CircomReduction};
 
+#[cfg(feature = "full")]
+pub mod ethereum;
+
 mod zkey;
 pub use zkey::read_zkey;

From 3e1bf449b440767efe777226442982f938622fad Mon Sep 17 00:00:00 2001
From: tyshkor <tyshko1@gmail.com>
Date: Fri, 10 Feb 2023 09:11:33 +0100
Subject: [PATCH 4/4] lint fixes

---
 src/circom/r1cs_reader.rs         | 2 +-
 src/witness/witness_calculator.rs | 5 ++---
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/src/circom/r1cs_reader.rs b/src/circom/r1cs_reader.rs
index 812ee84..e7b06b3 100644
--- a/src/circom/r1cs_reader.rs
+++ b/src/circom/r1cs_reader.rs
@@ -73,7 +73,7 @@ impl<E: PairingEngine> R1CSFile<E> {
         for _ in 0..num_sections {
             let sec_type = reader.read_u32::<LittleEndian>()?;
             let sec_size = reader.read_u64::<LittleEndian>()?;
-            let offset = reader.seek(SeekFrom::Current(0))?;
+            let offset = reader.stream_position()?;
             sec_offsets.insert(sec_type, offset);
             sec_sizes.insert(sec_type, sec_size);
             reader.seek(SeekFrom::Current(sec_size as i64))?;
diff --git a/src/witness/witness_calculator.rs b/src/witness/witness_calculator.rs
index 341bc9d..e995036 100644
--- a/src/witness/witness_calculator.rs
+++ b/src/witness/witness_calculator.rs
@@ -194,7 +194,7 @@ impl WitnessCalculator {
             for (i, value) in values.into_iter().enumerate() {
                 self.memory.write_fr(p_fr as usize, &value)?;
                 self.instance
-                    .set_signal(0, 0, (sig_offset + i) as u32, p_fr as u32)?;
+                    .set_signal(0, 0, (sig_offset + i) as u32, p_fr)?;
             }
         }
 
@@ -311,8 +311,7 @@ mod runtime {
             // NOTE: We can also get more information why it is failing, see p2str etc here:
             // https://github.com/iden3/circom_runtime/blob/master/js/witness_calculator.js#L52-L64
             println!(
-                "runtime error, exiting early: {0} {1} {2} {3} {4} {5}",
-                a, b, c, d, e, f
+                "runtime error, exiting early: {a} {b} {c} {d} {e} {f}",
             );
             Err(RuntimeError::user(Box::new(ExitCode(1))))
         }