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Merge pull request #31 from iden3/feat/did-pkh
add PKH resolver
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| name: e2e driver-did-iden3 | ||
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| on: | ||
| pull_request: | ||
| workflow_dispatch: | ||
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| jobs: | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,130 @@ | ||
| package pkh | ||
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| import ( | ||
| "context" | ||
| "errors" | ||
| "fmt" | ||
| "strings" | ||
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| "github.com/iden3/driver-did-iden3/pkg/document" | ||
| "github.com/iden3/go-iden3-core/v2/w3c" | ||
| "github.com/iden3/go-schema-processor/v2/verifiable" | ||
| ) | ||
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| const ( | ||
| NamespaceTezos = "tezos" | ||
| NamespaceEIP155 = "eip155" | ||
| NamespaceBIP122 = "bip122" | ||
| ) | ||
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| type Resolver struct { | ||
| } | ||
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| type ResolverOption func(*Resolver) | ||
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| // NewResolver create new pkh resolver. | ||
| func NewResolver() (*Resolver, error) { | ||
| return &Resolver{}, nil | ||
| } | ||
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| func (r *Resolver) Resolve( | ||
| ctx context.Context, | ||
| did w3c.DID, | ||
| ) (*document.DidResolution, error) { | ||
| didString := did.String() | ||
| parts := strings.Split(didString, ":") | ||
| namespace := parts[2] | ||
| vmID := didString + "#blockchainAccountId" | ||
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| didResolution := document.NewDidResolution() | ||
| authentication := verifiable.Authentication{} | ||
| authentication.ID = vmID | ||
| authentication.Type = document.EcdsaSecp256k1RecoveryMethod2020Type | ||
| authentication.Controller = didString | ||
| blockchainAccountID, err := getBlockchainAccountID(didString) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
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| assertionMethod := verifiable.Authentication{} | ||
| err = assertionMethod.UnmarshalJSON([]byte(fmt.Sprintf("%q", vmID))) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| didResolution.DidDocument = &verifiable.DIDDocument{ | ||
| Context: []interface{}{ | ||
| document.DefaultDidDocContext, | ||
| map[string]string{ | ||
| "blockchainAccountId": document.BlockchainAccountIDContext, | ||
| document.EcdsaSecp256k1RecoveryMethod2020Type: document.EcdsaSecp256k1RecoveryMethod2020Context, | ||
| }, | ||
| }, | ||
| ID: didString, | ||
| VerificationMethod: []verifiable.CommonVerificationMethod{}, | ||
| Authentication: []verifiable.Authentication{authentication}, | ||
| AssertionMethod: []verifiable.Authentication{assertionMethod}, | ||
| } | ||
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| didResolution.DidDocument.VerificationMethod = append( | ||
| didResolution.DidDocument.VerificationMethod, | ||
| verifiable.CommonVerificationMethod{ | ||
| ID: vmID, | ||
| Type: document.EcdsaSecp256k1RecoveryMethod2020Type, | ||
| Controller: didString, | ||
| BlockchainAccountID: blockchainAccountID, | ||
| }, | ||
| ) | ||
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| switch namespace { | ||
| case NamespaceEIP155: | ||
| case NamespaceBIP122: | ||
| break | ||
| case NamespaceTezos: | ||
| didResolution.DidDocument.Context = []interface{}{ | ||
| document.DefaultDidDocContext, | ||
| map[string]string{ | ||
| "blockchainAccountId": document.BlockchainAccountIDContext, | ||
| document.EcdsaSecp256k1RecoveryMethod2020Type: document.EcdsaSecp256k1RecoveryMethod2020Context, | ||
| document.TezosMethod2021Type: document.TezosMethod2021Context, | ||
| }, | ||
| } | ||
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| tzID := fmt.Sprintf("%s#%s", didString, document.TezosMethod2021Type) | ||
| didResolution.DidDocument.VerificationMethod = append( | ||
| didResolution.DidDocument.VerificationMethod, | ||
| verifiable.CommonVerificationMethod{ | ||
| ID: tzID, | ||
| Type: document.TezosMethod2021Type, | ||
| Controller: didString, | ||
| BlockchainAccountID: blockchainAccountID, | ||
| }, | ||
| ) | ||
| tzAuthentication := verifiable.Authentication{} | ||
| tzAuthentication.ID = tzID | ||
| tzAuthentication.Type = document.TezosMethod2021Type | ||
| tzAuthentication.Controller = didString | ||
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| tzAssertionMethod := verifiable.Authentication{} | ||
| err = tzAssertionMethod.UnmarshalJSON([]byte(fmt.Sprintf("%q", tzID))) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| didResolution.DidDocument.Authentication = append(didResolution.DidDocument.Authentication, tzAuthentication) | ||
| didResolution.DidDocument.AssertionMethod = append(didResolution.DidDocument.AssertionMethod, tzAssertionMethod) | ||
| default: | ||
| return nil, fmt.Errorf("chain namespace not supported: %s", namespace) | ||
| } | ||
| return didResolution, nil | ||
| } | ||
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| func getBlockchainAccountID(did string) (string, error) { | ||
| prefix := "did:pkh:" | ||
| if !strings.HasPrefix(did, prefix) { | ||
| return "", errors.New("invalid DID format: must start with 'did:pkh:'") | ||
| } | ||
| blockchainAccountID := strings.TrimPrefix(did, prefix) | ||
| if blockchainAccountID == "" { | ||
| return "", errors.New("invalid DID format: missing blockchainAccountId") | ||
| } | ||
| return blockchainAccountID, nil | ||
| } |