| // Copyright 2022 Google LLC |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| // |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| package signature_test |
| |
| import ( |
| "math/big" |
| "testing" |
| |
| "github.com/google/go-cmp/cmp" |
| "google.golang.org/protobuf/proto" |
| "google.golang.org/protobuf/testing/protocmp" |
| "github.com/google/tink/go/core/registry" |
| "github.com/google/tink/go/subtle/random" |
| "github.com/google/tink/go/tink" |
| cpb "github.com/google/tink/go/proto/common_go_proto" |
| rsppb "github.com/google/tink/go/proto/rsa_ssa_pss_go_proto" |
| tpb "github.com/google/tink/go/proto/tink_go_proto" |
| ) |
| |
| const ( |
| rsaPSSTestPrivateKeyTypeURL = "type.googleapis.com/google.crypto.tink.RsaSsaPssPrivateKey" |
| rsaPSSTestPrivateKeyVersion = 0 |
| ) |
| |
| func TestRSASSAPSSSignerKeyManagerDoesSupport(t *testing.T) { |
| skm, err := registry.GetKeyManager(rsaPSSTestPrivateKeyTypeURL) |
| if err != nil { |
| t.Fatalf("registry.GetKeyManager(%q) err = %v, want nil", err, rsaPSSTestPrivateKeyTypeURL) |
| } |
| if !skm.DoesSupport(rsaPSSTestPrivateKeyTypeURL) { |
| t.Errorf("DoesSupport(%q) err = false, want true", rsaPSSTestPrivateKeyTypeURL) |
| } |
| if skm.DoesSupport("fake.type.url") { |
| t.Errorf("DoesSupport(%q) err = true, want false", "fake.type.url") |
| } |
| } |
| |
| func TestRSASSAPSSSignerKeyManagerTypeURL(t *testing.T) { |
| skm, err := registry.GetKeyManager(rsaPSSTestPrivateKeyTypeURL) |
| if err != nil { |
| t.Fatalf("registry.GetKeyManager(%q) err = %v, want nil", err, rsaPSSTestPrivateKeyTypeURL) |
| } |
| if skm.TypeURL() != rsaPSSTestPrivateKeyTypeURL { |
| t.Errorf("TypeURL() = %q, want %q", skm.TypeURL(), rsaPSSTestPrivateKeyTypeURL) |
| } |
| } |
| |
| func TestRSASSAPSSSignerGetPrimitive(t *testing.T) { |
| skm, err := registry.GetKeyManager(rsaPSSTestPrivateKeyTypeURL) |
| if err != nil { |
| t.Fatalf("registry.GetKeyManager(%q) err = %v, want nil", err, rsaPSSTestPrivateKeyTypeURL) |
| } |
| privKey, err := makeValidRSAPSSKey() |
| if err != nil { |
| t.Fatalf("makeValidRSAPSSKey() err = %v, want nil", err) |
| } |
| serializedPrivate, err := proto.Marshal(privKey) |
| if err != nil { |
| t.Fatalf("proto.Marshal() err = %v, want nil", err) |
| } |
| p, err := skm.Primitive(serializedPrivate) |
| if err != nil { |
| t.Fatalf("Primitive() err = %v, want nil", err) |
| } |
| signer := p.(tink.Signer) |
| vkm, err := registry.GetKeyManager(rsaPSSTestPublicKeyTypeURL) |
| if err != nil { |
| t.Fatalf("registry.GetKeyManager(%q) err = %v, want nil", err, rsaPSSTestPublicKeyTypeURL) |
| } |
| serializedPublic, err := proto.Marshal(privKey.GetPublicKey()) |
| if err != nil { |
| t.Fatalf("proto.Marshal() err = %v, want nil", err) |
| } |
| p, err = vkm.Primitive(serializedPublic) |
| if err != nil { |
| t.Fatalf("Primitive() err = %v, want nil", err) |
| } |
| verifier := p.(tink.Verifier) |
| data := random.GetRandomBytes(80) |
| signature, err := signer.Sign(data) |
| if err != nil { |
| t.Fatalf("Sign() err = %v, want nil", err) |
| } |
| if err := verifier.Verify(signature, data); err != nil { |
| t.Fatalf("Verify() err = %v, want nil", err) |
| } |
| } |
| |
| func mergePrivPub(priv *rsppb.RsaSsaPssPrivateKey, pub *rsppb.RsaSsaPssPublicKey) *rsppb.RsaSsaPssPrivateKey { |
| return &rsppb.RsaSsaPssPrivateKey{ |
| Version: priv.GetVersion(), |
| PublicKey: pub, |
| D: priv.GetD(), |
| P: priv.GetP(), |
| Q: priv.GetQ(), |
| Dp: priv.GetDp(), |
| Dq: priv.GetDq(), |
| Crt: priv.GetCrt(), |
| } |
| } |
| |
| func TestRSASSAPSSSignerGetPrimitiveWithInvalidInput(t *testing.T) { |
| type testCase struct { |
| tag string |
| privKey *rsppb.RsaSsaPssPrivateKey |
| } |
| skm, err := registry.GetKeyManager(rsaPSSTestPrivateKeyTypeURL) |
| if err != nil { |
| t.Fatalf("registry.GetKeyManager(%q) err = %v, want nil", err, rsaPSSTestPrivateKeyTypeURL) |
| } |
| validPrivKey, err := makeValidRSAPSSKey() |
| if err != nil { |
| t.Fatalf("makeValidRSAPSSKey() err = %v, want nil", err) |
| } |
| for _, tc := range []testCase{ |
| { |
| tag: "empty private key", |
| privKey: &rsppb.RsaSsaPssPrivateKey{}, |
| }, |
| { |
| tag: "invalid private key version", |
| privKey: &rsppb.RsaSsaPssPrivateKey{ |
| Version: validPrivKey.GetVersion() + 1, |
| PublicKey: validPrivKey.GetPublicKey(), |
| D: validPrivKey.GetD(), |
| P: validPrivKey.GetP(), |
| Q: validPrivKey.GetQ(), |
| Dp: validPrivKey.GetDp(), |
| Dq: validPrivKey.GetDq(), |
| Crt: validPrivKey.GetCrt(), |
| }, |
| }, |
| { |
| tag: "invalid private key D", |
| privKey: &rsppb.RsaSsaPssPrivateKey{ |
| Version: validPrivKey.GetVersion(), |
| PublicKey: validPrivKey.GetPublicKey(), |
| D: nil, |
| P: validPrivKey.GetP(), |
| Q: validPrivKey.GetQ(), |
| Dp: validPrivKey.GetDp(), |
| Dq: validPrivKey.GetDq(), |
| Crt: validPrivKey.GetCrt(), |
| }, |
| }, |
| { |
| tag: "invalid private key P", |
| privKey: &rsppb.RsaSsaPssPrivateKey{ |
| Version: validPrivKey.GetVersion(), |
| PublicKey: validPrivKey.GetPublicKey(), |
| D: validPrivKey.GetD(), |
| P: nil, |
| Q: validPrivKey.GetQ(), |
| Dp: validPrivKey.GetDp(), |
| Dq: validPrivKey.GetDq(), |
| Crt: validPrivKey.GetCrt(), |
| }, |
| }, |
| { |
| tag: "invalid private key Q", |
| privKey: &rsppb.RsaSsaPssPrivateKey{ |
| Version: validPrivKey.GetVersion(), |
| PublicKey: validPrivKey.GetPublicKey(), |
| D: validPrivKey.GetD(), |
| P: validPrivKey.GetP(), |
| Q: nil, |
| Dp: validPrivKey.GetDp(), |
| Dq: validPrivKey.GetDq(), |
| Crt: validPrivKey.GetCrt(), |
| }, |
| }, |
| { |
| tag: "invalid private key Dp", |
| privKey: &rsppb.RsaSsaPssPrivateKey{ |
| Version: validPrivKey.GetVersion(), |
| PublicKey: validPrivKey.GetPublicKey(), |
| D: validPrivKey.GetD(), |
| P: validPrivKey.GetP(), |
| Q: validPrivKey.GetQ(), |
| Dp: nil, |
| Dq: validPrivKey.GetDq(), |
| Crt: validPrivKey.GetCrt(), |
| }, |
| }, |
| { |
| tag: "invalid private key Dq", |
| privKey: &rsppb.RsaSsaPssPrivateKey{ |
| Version: validPrivKey.GetVersion(), |
| PublicKey: validPrivKey.GetPublicKey(), |
| D: validPrivKey.GetD(), |
| P: validPrivKey.GetP(), |
| Q: validPrivKey.GetQ(), |
| Dp: validPrivKey.GetDp(), |
| Dq: nil, |
| Crt: validPrivKey.GetCrt(), |
| }, |
| }, |
| { |
| tag: "invalid private key Crt", |
| privKey: &rsppb.RsaSsaPssPrivateKey{ |
| Version: validPrivKey.GetVersion(), |
| PublicKey: validPrivKey.GetPublicKey(), |
| D: validPrivKey.GetD(), |
| P: validPrivKey.GetP(), |
| Q: validPrivKey.GetQ(), |
| Dp: validPrivKey.GetDp(), |
| Dq: validPrivKey.GetDq(), |
| Crt: nil, |
| }, |
| }, |
| { |
| tag: "empty public key", |
| privKey: mergePrivPub(validPrivKey, &rsppb.RsaSsaPssPublicKey{}), |
| }, |
| { |
| tag: "invalid public key version", |
| privKey: mergePrivPub( |
| validPrivKey, |
| &rsppb.RsaSsaPssPublicKey{ |
| Version: validPrivKey.GetPublicKey().GetVersion() + 1, |
| Params: validPrivKey.GetPublicKey().GetParams(), |
| N: validPrivKey.GetPublicKey().GetN(), |
| E: validPrivKey.GetPublicKey().GetE(), |
| }), |
| }, |
| { |
| tag: "different sig and mgf1 hash functions", |
| privKey: mergePrivPub( |
| validPrivKey, |
| &rsppb.RsaSsaPssPublicKey{ |
| Version: validPrivKey.GetPublicKey().GetVersion(), |
| Params: &rsppb.RsaSsaPssParams{ |
| SigHash: cpb.HashType_SHA256, |
| Mgf1Hash: cpb.HashType_SHA384, |
| SaltLength: validPrivKey.GetPublicKey().GetParams().GetSaltLength(), |
| }, |
| N: validPrivKey.GetPublicKey().GetN(), |
| E: validPrivKey.GetPublicKey().GetE(), |
| }), |
| }, |
| { |
| tag: "negative salt length", |
| privKey: mergePrivPub( |
| validPrivKey, |
| &rsppb.RsaSsaPssPublicKey{ |
| Version: validPrivKey.GetPublicKey().GetVersion(), |
| Params: &rsppb.RsaSsaPssParams{ |
| SigHash: validPrivKey.GetPublicKey().GetParams().GetSigHash(), |
| Mgf1Hash: validPrivKey.GetPublicKey().GetParams().GetMgf1Hash(), |
| SaltLength: -1, |
| }, |
| N: validPrivKey.GetPublicKey().GetN(), |
| E: validPrivKey.GetPublicKey().GetE(), |
| }), |
| }, |
| { |
| tag: "invalid hash function", |
| privKey: mergePrivPub( |
| validPrivKey, |
| &rsppb.RsaSsaPssPublicKey{ |
| Version: validPrivKey.GetPublicKey().GetVersion(), |
| Params: &rsppb.RsaSsaPssParams{ |
| SigHash: cpb.HashType_UNKNOWN_HASH, |
| Mgf1Hash: cpb.HashType_UNKNOWN_HASH, |
| SaltLength: validPrivKey.GetPublicKey().GetParams().GetSaltLength(), |
| }, |
| N: validPrivKey.GetPublicKey().GetN(), |
| E: validPrivKey.GetPublicKey().GetE(), |
| }), |
| }, |
| { |
| tag: "unsafe hash function", |
| privKey: mergePrivPub( |
| validPrivKey, |
| &rsppb.RsaSsaPssPublicKey{ |
| Version: validPrivKey.GetPublicKey().GetVersion(), |
| Params: &rsppb.RsaSsaPssParams{ |
| SigHash: cpb.HashType_SHA1, |
| Mgf1Hash: cpb.HashType_SHA1, |
| SaltLength: validPrivKey.GetPublicKey().GetParams().GetSaltLength(), |
| }, |
| N: validPrivKey.GetPublicKey().GetN(), |
| E: validPrivKey.GetPublicKey().GetE(), |
| }), |
| }, |
| { |
| tag: "invalid modulus", |
| privKey: mergePrivPub( |
| validPrivKey, |
| &rsppb.RsaSsaPssPublicKey{ |
| Version: validPrivKey.GetPublicKey().GetVersion(), |
| Params: validPrivKey.GetPublicKey().GetParams(), |
| N: []byte{0x00}, |
| E: validPrivKey.GetPublicKey().GetE(), |
| }), |
| }, |
| { |
| tag: "invalid exponent", |
| privKey: mergePrivPub( |
| validPrivKey, |
| &rsppb.RsaSsaPssPublicKey{ |
| Version: validPrivKey.GetPublicKey().GetVersion(), |
| Params: validPrivKey.GetPublicKey().GetParams(), |
| N: validPrivKey.GetPublicKey().GetN(), |
| E: []byte{0x01}, |
| }), |
| }, |
| { |
| tag: "exponent larger than 64 bits", |
| privKey: mergePrivPub( |
| validPrivKey, |
| &rsppb.RsaSsaPssPublicKey{ |
| Version: validPrivKey.GetPublicKey().GetVersion(), |
| Params: validPrivKey.GetPublicKey().GetParams(), |
| N: validPrivKey.GetPublicKey().GetN(), |
| E: random.GetRandomBytes(32), |
| }), |
| }, |
| } { |
| t.Run(tc.tag, func(t *testing.T) { |
| serializedPrivKey, err := proto.Marshal(tc.privKey) |
| if err != nil { |
| t.Fatalf("proto.Marshal() err = %v, want nil", err) |
| } |
| if _, err := skm.Primitive(serializedPrivKey); err == nil { |
| t.Errorf("Primitive() err = nil, want error") |
| } |
| if _, err := skm.(registry.PrivateKeyManager).PublicKeyData(serializedPrivKey); err == nil { |
| t.Errorf("PublicKeyData() err = nil, want error") |
| } |
| }) |
| } |
| } |
| |
| func TestRSASSAPSSSignerGetPrimitiveWithCorruptedPrivateKey(t *testing.T) { |
| skm, err := registry.GetKeyManager(rsaPSSTestPrivateKeyTypeURL) |
| if err != nil { |
| t.Fatalf("registry.GetKeyManager(%q) err = %v, want nil", err, rsaPSSTestPrivateKeyTypeURL) |
| } |
| validPrivKey, err := makeValidRSAPSSKey() |
| if err != nil { |
| t.Fatalf("makeValidRSAPSSKey() err = %v, want nil", err) |
| } |
| corruptedPrivKey := validPrivKey |
| corruptedPrivKey.P[5] <<= 1 |
| corruptedPrivKey.P[20] <<= 1 |
| serializedPrivKey, err := proto.Marshal(corruptedPrivKey) |
| if err != nil { |
| t.Fatalf("proto.Marshal() err = %v, want nil", err) |
| } |
| if _, err := skm.Primitive(serializedPrivKey); err == nil { |
| t.Errorf("Primitive() err = nil, want error") |
| } |
| } |
| |
| func TestRSASSAPSSSignerNewKey(t *testing.T) { |
| keyFormat := &rsppb.RsaSsaPssKeyFormat{ |
| Params: &rsppb.RsaSsaPssParams{ |
| SigHash: cpb.HashType_SHA256, |
| Mgf1Hash: cpb.HashType_SHA256, |
| SaltLength: 32, |
| }, |
| ModulusSizeInBits: 3072, |
| PublicExponent: []byte{0x01, 0x00, 0x01}, |
| } |
| serializedKeyFormat, err := proto.Marshal(keyFormat) |
| if err != nil { |
| t.Fatalf("proto.Marshal() err = %v, want nil", err) |
| } |
| skm, err := registry.GetKeyManager(rsaPSSTestPrivateKeyTypeURL) |
| if err != nil { |
| t.Fatalf("registry.GetKeyManager(%q) err = %v, want nil", err, rsaPSSTestPrivateKeyTypeURL) |
| } |
| key, err := skm.NewKey(serializedKeyFormat) |
| if err != nil { |
| t.Fatalf("NewKey() err = %v, want nil", err) |
| } |
| privKey, ok := key.(*rsppb.RsaSsaPssPrivateKey) |
| if !ok { |
| t.Fatalf("key isn't a *rsppb.RsaSsaPssPrivateKey") |
| } |
| if privKey.GetVersion() != rsaPSSTestPrivateKeyVersion { |
| t.Errorf("privKey.GetVersion() = %d, want %d", privKey.GetVersion(), rsaPSSTestPrivateKeyVersion) |
| } |
| if privKey.GetD() == nil { |
| t.Error("GetD() == nil, want []byte{}") |
| } |
| if privKey.GetP() == nil { |
| t.Error("GetP() == nil, want []byte{}") |
| } |
| if privKey.GetQ() == nil { |
| t.Error("GetQ() == nil, want []byte{}") |
| } |
| if privKey.GetDp() == nil { |
| t.Error("GetDp() == nil, want []byte{}") |
| } |
| if privKey.GetDq() == nil { |
| t.Error("GetDq() == nil, want []byte{}") |
| } |
| if privKey.GetCrt() == nil { |
| t.Error("GetCrt() == nil, want []byte{}") |
| } |
| pubKey := privKey.GetPublicKey() |
| if !cmp.Equal(pubKey.GetE(), keyFormat.GetPublicExponent()) { |
| t.Errorf("GetE() = %v, want %v", pubKey.GetE(), keyFormat.GetPublicExponent()) |
| } |
| n := uint32(new(big.Int).SetBytes(pubKey.GetN()).BitLen()) |
| if !cmp.Equal(n, keyFormat.GetModulusSizeInBits()) { |
| t.Errorf("Modulus size in bits = %q, want %q", n, keyFormat.GetModulusSizeInBits()) |
| } |
| if !cmp.Equal(pubKey.GetParams(), keyFormat.GetParams(), protocmp.Transform()) { |
| t.Errorf("GetParams() = %v, want %v", pubKey.GetParams(), keyFormat.GetParams()) |
| } |
| } |
| |
| func TestRSASSAPSSSignerNewKeyData(t *testing.T) { |
| keyFormat := &rsppb.RsaSsaPssKeyFormat{ |
| Params: &rsppb.RsaSsaPssParams{ |
| SigHash: cpb.HashType_SHA256, |
| Mgf1Hash: cpb.HashType_SHA256, |
| SaltLength: 32, |
| }, |
| ModulusSizeInBits: 3072, |
| PublicExponent: []byte{0x01, 0x00, 0x01}, |
| } |
| serializedKeyFormat, err := proto.Marshal(keyFormat) |
| if err != nil { |
| t.Fatalf("proto.Marshal() err = %v, want nil", err) |
| } |
| skm, err := registry.GetKeyManager(rsaPSSTestPrivateKeyTypeURL) |
| if err != nil { |
| t.Fatalf("registry.GetKeyManager(%q) err = %v, want nil", err, rsaPSSTestPrivateKeyTypeURL) |
| } |
| vkm, err := registry.GetKeyManager(rsaPSSTestPublicKeyTypeURL) |
| if err != nil { |
| t.Fatalf("registry.GetKeyManager(%q) err = %v, want nil", err, rsaPSSTestPublicKeyTypeURL) |
| } |
| keyData, err := skm.NewKeyData(serializedKeyFormat) |
| if err != nil { |
| t.Fatalf("skm.NewKeyData() err = %v, want nil", err) |
| } |
| if keyData.GetKeyMaterialType() != tpb.KeyData_ASYMMETRIC_PRIVATE { |
| t.Errorf("keyData.GetKeyMaterialType() = %v, want %v", keyData.GetKeyMaterialType(), tpb.KeyData_ASYMMETRIC_PRIVATE) |
| } |
| if keyData.GetTypeUrl() != rsaPSSTestPrivateKeyTypeURL { |
| t.Errorf("keyData.GetTypeUrl() = %q, want %q", keyData.GetTypeUrl(), rsaPSSTestPrivateKeyTypeURL) |
| } |
| // Creating a primitive does a self key test which signs and verifies data. |
| s, err := skm.Primitive(keyData.GetValue()) |
| if err != nil { |
| t.Fatalf("Primitive() err = %v, want nil", err) |
| } |
| signer, ok := s.(tink.Signer) |
| if !ok { |
| t.Fatal("Primitive() return type isn't a tink.Signer") |
| } |
| data := random.GetRandomBytes(50) |
| sig, err := signer.Sign(data) |
| if err != nil { |
| t.Fatalf("signer.Sign() err = %v, want nil", err) |
| } |
| pubKeyData, err := skm.(registry.PrivateKeyManager).PublicKeyData(keyData.GetValue()) |
| if err != nil { |
| t.Fatalf("PublicKeyData() err = %v, want nil", err) |
| } |
| v, err := vkm.Primitive(pubKeyData.GetValue()) |
| if err != nil { |
| t.Fatalf("Primitive() err = %v, want nil", err) |
| } |
| verifier, ok := v.(tink.Verifier) |
| if !ok { |
| t.Fatal("Primitive() return type isn't a tink.Verifier") |
| } |
| if err := verifier.Verify(sig, data); err != nil { |
| t.Fatalf("verifier.Verify() err = %v, want nil", err) |
| } |
| } |
| |
| func TestRSASSAPSSSignerNewKeyFailsWithInvalidFormat(t *testing.T) { |
| type testCase struct { |
| tag string |
| keyFormat *rsppb.RsaSsaPssKeyFormat |
| } |
| skm, err := registry.GetKeyManager(rsaPSSTestPrivateKeyTypeURL) |
| if err != nil { |
| t.Fatalf("registry.GetKeyManager(%q) err = %v, want nil", err, rsaPSSTestPrivateKeyTypeURL) |
| } |
| validKeyFormat := &rsppb.RsaSsaPssKeyFormat{ |
| Params: &rsppb.RsaSsaPssParams{ |
| SigHash: cpb.HashType_SHA256, |
| Mgf1Hash: cpb.HashType_SHA256, |
| SaltLength: 32, |
| }, |
| ModulusSizeInBits: 3072, |
| PublicExponent: []byte{0x01, 0x00, 0x01}, |
| } |
| serializedKeyFormat, err := proto.Marshal(validKeyFormat) |
| if err != nil { |
| t.Fatalf("proto.Marshal() err = %v, want nil", err) |
| } |
| if _, err := skm.NewKeyData(serializedKeyFormat); err != nil { |
| t.Fatalf("NewKeyData() err = %v, want nil", err) |
| } |
| for _, tc := range []testCase{ |
| { |
| tag: "unsafe hash function", |
| keyFormat: &rsppb.RsaSsaPssKeyFormat{ |
| Params: &rsppb.RsaSsaPssParams{ |
| SigHash: cpb.HashType_SHA224, |
| Mgf1Hash: cpb.HashType_SHA224, |
| SaltLength: validKeyFormat.GetParams().GetSaltLength(), |
| }, |
| ModulusSizeInBits: validKeyFormat.GetModulusSizeInBits(), |
| PublicExponent: validKeyFormat.GetPublicExponent(), |
| }, |
| }, |
| { |
| tag: "different signature and mgf1 hash function", |
| keyFormat: &rsppb.RsaSsaPssKeyFormat{ |
| Params: &rsppb.RsaSsaPssParams{ |
| SigHash: cpb.HashType_SHA384, |
| Mgf1Hash: cpb.HashType_SHA512, |
| SaltLength: validKeyFormat.GetParams().GetSaltLength(), |
| }, |
| ModulusSizeInBits: validKeyFormat.GetModulusSizeInBits(), |
| PublicExponent: validKeyFormat.GetPublicExponent(), |
| }, |
| }, |
| { |
| tag: "negative salt length", |
| keyFormat: &rsppb.RsaSsaPssKeyFormat{ |
| Params: &rsppb.RsaSsaPssParams{ |
| SigHash: validKeyFormat.GetParams().GetSigHash(), |
| Mgf1Hash: validKeyFormat.GetParams().GetMgf1Hash(), |
| SaltLength: -1, |
| }, |
| ModulusSizeInBits: validKeyFormat.GetModulusSizeInBits(), |
| PublicExponent: validKeyFormat.GetPublicExponent(), |
| }, |
| }, |
| { |
| tag: "insecure modulus size", |
| keyFormat: &rsppb.RsaSsaPssKeyFormat{ |
| Params: validKeyFormat.GetParams(), |
| ModulusSizeInBits: 2047, |
| PublicExponent: validKeyFormat.GetPublicExponent(), |
| }, |
| }, |
| { |
| tag: "invalid public exponent", |
| keyFormat: &rsppb.RsaSsaPssKeyFormat{ |
| Params: validKeyFormat.GetParams(), |
| ModulusSizeInBits: validKeyFormat.GetModulusSizeInBits(), |
| PublicExponent: []byte{0x00, 0x00, 0x03}, |
| }, |
| }, |
| } { |
| t.Run(tc.tag, func(t *testing.T) { |
| serializedKeyFormat, err := proto.Marshal(tc.keyFormat) |
| if err != nil { |
| t.Fatalf("proto.Marshal() err = %v, want nil", err) |
| } |
| if _, err := skm.NewKey(serializedKeyFormat); err == nil { |
| t.Fatalf("NewKey() err = nil, want error") |
| } |
| if _, err := skm.NewKeyData(serializedKeyFormat); err == nil { |
| t.Fatalf("NewKeyData() err = nil, want error") |
| } |
| }) |
| } |
| } |
| |
| func TestRSASSAPSSSignerPublicKeyData(t *testing.T) { |
| skm, err := registry.GetKeyManager(rsaPSSTestPrivateKeyTypeURL) |
| if err != nil { |
| t.Fatalf("registry.GetKeyManager(%q) err = %v, want nil", err, rsaPSSTestPrivateKeyTypeURL) |
| } |
| vkm, err := registry.GetKeyManager(rsaPSSTestPublicKeyTypeURL) |
| if err != nil { |
| t.Fatalf("registry.GetKeyManager(%q) err = %v, want nil", err, rsaPSSTestPublicKeyTypeURL) |
| } |
| validPrivKey, err := makeValidRSAPSSKey() |
| if err != nil { |
| t.Fatalf("makeValidRSAPSSKey() err = %v, want nil", err) |
| } |
| serializedPrivKey, err := proto.Marshal(validPrivKey) |
| if err != nil { |
| t.Fatalf("proto.Marshal() err = %v, want nil", err) |
| } |
| pubKeyData, err := skm.(registry.PrivateKeyManager).PublicKeyData(serializedPrivKey) |
| if err != nil { |
| t.Fatalf("PublicKeyData() err = %v, want nil", err) |
| } |
| if pubKeyData.GetKeyMaterialType() != tpb.KeyData_ASYMMETRIC_PUBLIC { |
| t.Errorf("GetKeyMaterialType() = %v, want %v", pubKeyData.GetKeyMaterialType(), tpb.KeyData_ASYMMETRIC_PUBLIC) |
| } |
| if pubKeyData.GetTypeUrl() != rsaPSSTestPublicKeyTypeURL { |
| t.Errorf("GetTypeUrl() = %q, want %q", pubKeyData.GetTypeUrl(), rsaPSSTestPublicKeyTypeURL) |
| } |
| if _, err := vkm.Primitive(pubKeyData.GetValue()); err != nil { |
| t.Fatalf("vkm.Primitive() err = %v, want nil", err) |
| } |
| } |
