intro.md

Obtaining Hashes within Radare2 Session

To calculate a checksum of current block when running rarare2, use the '#' command. Pass an algorithm name to it as a parameter. An example session:

$ radare2 /bin/ls
[0x08049790]> bf entry0
[0x08049790]> #md5
d2994c75adaa58392f953a448de5fba7

You can use all hashing algorithms supported by rahash2: md4, md5, crc16, crc32, sha1, sha256, sha384, sha512, par, xor, xorpair, mod255, hamdist, entropy. The # command accepts an optional numeric argument to specify length of byte range to be hashed, instead of default block size. For example:

[0x08049A80]> #md5 32
9b9012b00ef7a94b5824105b7aaad83b
[0x08049A80]> #md5 64
a71b087d8166c99869c9781e2edcf183
[0x08049A80]> #md5 1024
a933cc94cd705f09a41ecc80c0041def
[0x08049A80]>