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presentation_jwt_proof_test.go
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/*
Copyright SecureKey Technologies Inc. All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
package verifiable
import (
"crypto/ed25519"
"crypto/rand"
"errors"
"testing"
"time"
"github.com/stretchr/testify/require"
"github.com/hyperledger/aries-framework-go/pkg/doc/signature/verifier"
"github.com/hyperledger/aries-framework-go/pkg/doc/util"
"github.com/hyperledger/aries-framework-go/pkg/kms"
)
func TestParsePresentationFromJWS(t *testing.T) {
vpBytes := []byte(validPresentation)
holderSigner, err := newCryptoSigner(kms.RSARS256Type)
require.NoError(t, err)
keyFetcher := createPresKeyFetcher(holderSigner.PublicKeyBytes())
t.Run("Decoding presentation from JWS", func(t *testing.T) {
jws := createPresJWS(t, vpBytes, false, holderSigner)
vpFromJWT, err := newTestPresentation(t, jws, WithPresPublicKeyFetcher(keyFetcher))
require.NoError(t, err)
vp, err := newTestPresentation(t, vpBytes)
require.NoError(t, err)
require.Equal(t, vp, vpFromJWT)
})
t.Run("Decoding presentation from JWS with minimized fields of \"vp\" claim", func(t *testing.T) {
jws := createPresJWS(t, vpBytes, true, holderSigner)
vpFromJWT, err := newTestPresentation(t, jws, WithPresPublicKeyFetcher(keyFetcher))
require.NoError(t, err)
vp, err := newTestPresentation(t, vpBytes)
require.NoError(t, err)
require.Equal(t, vp, vpFromJWT)
})
t.Run("Failed JWT signature verification of presentation", func(t *testing.T) {
jws := createPresJWS(t, vpBytes, true, holderSigner)
vp, err := newTestPresentation(t,
jws,
// passing issuers's key, while expecting holder's one
WithPresPublicKeyFetcher(func(issuerID, keyID string) (*verifier.PublicKey, error) {
issuerSigner, err := newCryptoSigner(kms.RSARS256Type)
require.NoError(t, err)
return &verifier.PublicKey{
Type: kms.RSARS256,
Value: issuerSigner.PublicKeyBytes(),
}, nil
}))
require.Error(t, err)
require.Contains(t, err.Error(), "decoding of Verifiable Presentation from JWS")
require.Nil(t, vp)
})
t.Run("Failed public key fetching", func(t *testing.T) {
jws := createPresJWS(t, vpBytes, true, holderSigner)
vp, err := newTestPresentation(t,
jws,
WithPresPublicKeyFetcher(func(issuerID, keyID string) (*verifier.PublicKey, error) {
return nil, errors.New("test: public key is not found")
}))
require.Error(t, err)
require.Contains(t, err.Error(), "test: public key is not found")
require.Nil(t, vp)
})
t.Run("Not defined public key fetcher", func(t *testing.T) {
vp, err := newTestPresentation(t, createPresJWS(t, vpBytes, true, holderSigner))
require.Error(t, err)
require.Contains(t, err.Error(), "public key fetcher is not defined")
require.Nil(t, vp)
})
}
func TestParsePresentationFromJWS_EdDSA(t *testing.T) {
vpBytes := []byte(validPresentation)
signer, err := newCryptoSigner(kms.ED25519Type)
require.NoError(t, err)
vp, err := newTestPresentation(t, vpBytes)
require.NoError(t, err)
// marshal presentation into JWS using EdDSA (Ed25519 signature algorithm).
jwtClaims, err := vp.JWTClaims([]string{}, false)
require.NoError(t, err)
vpJWSStr, err := jwtClaims.MarshalJWS(EdDSA, signer, vp.Holder+"#keys-"+keyID)
require.NoError(t, err)
// unmarshal presentation from JWS
vpFromJWS, err := newTestPresentation(t,
[]byte(vpJWSStr),
WithPresPublicKeyFetcher(SingleKey(signer.PublicKeyBytes(), kms.ED25519)))
require.NoError(t, err)
// unmarshalled presentation must be the same as original one
require.Equal(t, vp, vpFromJWS)
}
func TestParsePresentationFromUnsecuredJWT(t *testing.T) {
vpBytes := []byte(validPresentation)
t.Run("Decoding presentation from unsecured JWT", func(t *testing.T) {
vpFromJWT, err := newTestPresentation(t, createPresUnsecuredJWT(t, vpBytes, false))
require.NoError(t, err)
vp, err := newTestPresentation(t, vpBytes)
require.NoError(t, err)
require.Equal(t, vp, vpFromJWT)
})
t.Run("Decoding presentation from unsecured JWT with minimized fields of \"vp\" claim", func(t *testing.T) {
vpFromJWT, err := newTestPresentation(t, createPresUnsecuredJWT(t, vpBytes, true))
require.NoError(t, err)
vp, err := newTestPresentation(t, vpBytes)
require.NoError(t, err)
require.Equal(t, vp, vpFromJWT)
})
}
func TestParsePresentationWithVCJWT(t *testing.T) {
r := require.New(t)
// Create and encode VP.
issued := time.Date(2010, time.January, 1, 19, 23, 24, 0, time.UTC)
expired := time.Date(2020, time.January, 1, 19, 23, 24, 0, time.UTC)
vc := &Credential{
Context: []string{
"https://www.w3.org/2018/credentials/v1",
"https://www.w3.org/2018/credentials/examples/v1",
},
ID: "http://example.edu/credentials/1872",
Types: []string{
"VerifiableCredential",
"UniversityDegreeCredential",
},
Subject: UniversityDegreeSubject{
ID: "did:example:ebfeb1f712ebc6f1c276e12ec21",
Name: "Jayden Doe",
Spouse: "did:example:c276e12ec21ebfeb1f712ebc6f1",
Degree: UniversityDegree{
Type: "BachelorDegree",
University: "MIT",
},
},
Issuer: Issuer{
ID: "did:example:76e12ec712ebc6f1c221ebfeb1f",
CustomFields: CustomFields{"name": "Example University"},
},
Issued: util.NewTime(issued),
Expired: util.NewTime(expired),
Schemas: []TypedID{},
}
vcJWTClaims, err := vc.JWTClaims(true)
r.NoError(err)
issuerSigner, err := newCryptoSigner(kms.RSARS256Type)
r.NoError(err)
vcJWS, err := vcJWTClaims.MarshalJWS(RS256, issuerSigner, "issuer-key")
r.NoError(err)
r.NotNil(vcJWS)
t.Run("Presentation with VC defined as JWS", func(t *testing.T) {
// Create and encode VP.
vp, err := NewPresentation(WithJWTCredentials(vcJWS))
r.NoError(err)
vp.ID = "urn:uuid:2978344f-8596-4c3a-a978-8fcaba3903c"
vp.Holder = "did:example:fbfeb1f712ebc6f1c276e12ec21"
holderSigner, err := newCryptoSigner(kms.ED25519Type)
r.NoError(err)
jwtClaims, err := vp.JWTClaims([]string{}, true)
require.NoError(t, err)
vpJWS, err := jwtClaims.MarshalJWS(EdDSA, holderSigner, "holder-key")
r.NoError(err)
// Decode VP
vpDecoded, err := newTestPresentation(t, []byte(vpJWS), WithPresPublicKeyFetcher(
func(issuerID, keyID string) (*verifier.PublicKey, error) {
switch keyID {
case "holder-key":
return &verifier.PublicKey{
Type: kms.ED25519,
Value: holderSigner.PublicKeyBytes(),
}, nil
case "issuer-key":
return &verifier.PublicKey{
Type: kms.RSARS256,
Value: issuerSigner.PublicKeyBytes(),
}, nil
default:
return nil, errors.New("unexpected key")
}
}))
r.NoError(err)
vpCreds, err := vpDecoded.MarshalledCredentials()
r.NoError(err)
r.Len(vpCreds, 1)
vcDecoded, err := parseTestCredential(t, vpCreds[0])
r.NoError(err)
r.Equal(vc.stringJSON(t), vcDecoded.stringJSON(t))
})
t.Run("Presentation with VC defined as VC struct", func(t *testing.T) {
// Create and encode VP.
vp, err := NewPresentation(WithCredentials(vc))
r.NoError(err)
vp.ID = "urn:uuid:5978344f-8596-4c3a-a978-8fcaba3903c"
vp.Holder = "did:example:abfeb1f712ebc6f1c276e12ec21"
holderSigner, err := newCryptoSigner(kms.ED25519Type)
r.NoError(err)
jwtClaims, err := vp.JWTClaims([]string{}, true)
require.NoError(t, err)
vpJWS, err := jwtClaims.MarshalJWS(EdDSA, holderSigner, "holder-key")
r.NoError(err)
// Decode VP
vpDecoded, err := newTestPresentation(t, []byte(vpJWS), WithPresPublicKeyFetcher(
SingleKey(holderSigner.PublicKeyBytes(), kms.ED25519)))
r.NoError(err)
vpCreds, err := vpDecoded.MarshalledCredentials()
r.NoError(err)
r.Len(vpCreds, 1)
vcDecoded, err := parseTestCredential(t, vpCreds[0])
r.NoError(err)
r.Equal(vc.stringJSON(t), vcDecoded.stringJSON(t))
})
t.Run("Failed check of VC due to invalid JWS", func(t *testing.T) {
vp, err := NewPresentation(WithJWTCredentials(vcJWS))
r.NoError(err)
vp.ID = "urn:uuid:0978344f-8596-4c3a-a978-8fcaba3903c"
vp.Holder = "did:example:ebfeb2f712ebc6f1c276e12ec21"
holderSigner, err := newCryptoSigner(kms.ED25519Type)
r.NoError(err)
jwtClaims, err := vp.JWTClaims([]string{}, true)
require.NoError(t, err)
vpJWS, err := jwtClaims.MarshalJWS(EdDSA, holderSigner, "holder-key")
r.NoError(err)
// Decode VP
vp, err = newTestPresentation(t, []byte(vpJWS), WithPresPublicKeyFetcher(
func(issuerID, keyID string) (*verifier.PublicKey, error) {
switch keyID {
case "holder-key":
return &verifier.PublicKey{
Type: kms.ED25519,
Value: holderSigner.PublicKeyBytes(),
}, nil
case "issuer-key":
// here we return invalid public key
anotherPubKey, _, gerr := ed25519.GenerateKey(rand.Reader)
r.NoError(gerr)
return &verifier.PublicKey{
Type: kms.ED25519,
Value: anotherPubKey,
}, nil
default:
r.NoError(err)
return nil, errors.New("unexpected key")
}
}))
r.Error(err)
r.Contains(err.Error(), "decode credentials of presentation")
r.Contains(err.Error(), "JWS decoding")
r.Nil(vp)
})
}
func createPresJWS(t *testing.T, vpBytes []byte, minimize bool, signer Signer) []byte {
vp, err := newTestPresentation(t, vpBytes)
require.NoError(t, err)
jwtClaims, err := vp.JWTClaims([]string{}, minimize)
require.NoError(t, err)
vpJWT, err := jwtClaims.MarshalJWS(RS256, signer, vp.Holder+"#keys-"+keyID)
require.NoError(t, err)
return []byte(vpJWT)
}
func createPresKeyFetcher(pubKeyBytes []byte) func(issuerID string, keyID string) (*verifier.PublicKey, error) {
return func(issuerID, keyID string) (*verifier.PublicKey, error) {
return &verifier.PublicKey{
Type: kms.RSARS256,
Value: pubKeyBytes,
}, nil
}
}
func createPresUnsecuredJWT(t *testing.T, cred []byte, minimize bool) []byte {
vp, err := newTestPresentation(t, cred)
require.NoError(t, err)
jwtClaims, err := vp.JWTClaims([]string{}, minimize)
require.NoError(t, err)
vpJWT, err := jwtClaims.MarshalUnsecuredJWT()
require.NoError(t, err)
return []byte(vpJWT)
}