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|
package cloudkms
import (
"context"
"crypto"
"crypto/rand"
"crypto/rsa"
"fmt"
"io"
"os"
"testing"
"cloud.google.com/go/kms/apiv1/kmspb"
gax "github.com/googleapis/gax-go/v2"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"go.step.sm/crypto/kms/apiv1"
"go.step.sm/crypto/pemutil"
"google.golang.org/protobuf/types/known/wrapperspb"
)
func TestCloudKMS_CreateDecrypter(t *testing.T) {
keyName := "projects/p/locations/l/keyRings/k/cryptoKeys/c/cryptoKeyVersions/1"
pemBytes, err := os.ReadFile("testdata/rsapub.pem")
require.NoError(t, err)
pk, err := pemutil.ParseKey(pemBytes)
require.NoError(t, err)
type fields struct {
client KeyManagementClient
}
type args struct {
req *apiv1.CreateDecrypterRequest
}
tests := []struct {
name string
fields fields
args args
want crypto.Decrypter
wantErr bool
}{
{"ok", fields{&MockClient{
getPublicKey: func(_ context.Context, r *kmspb.GetPublicKeyRequest, _ ...gax.CallOption) (*kmspb.PublicKey, error) {
assert.NotContains(t, r.Name, "cloudkms:")
return &kmspb.PublicKey{Pem: string(pemBytes)}, nil
},
}}, args{&apiv1.CreateDecrypterRequest{DecryptionKey: keyName}}, &Decrypter{client: &MockClient{}, decryptionKey: keyName, publicKey: pk}, false},
{"ok with uri", fields{&MockClient{
getPublicKey: func(_ context.Context, r *kmspb.GetPublicKeyRequest, _ ...gax.CallOption) (*kmspb.PublicKey, error) {
assert.NotContains(t, r.Name, "cloudkms:")
return &kmspb.PublicKey{Pem: string(pemBytes)}, nil
},
}}, args{&apiv1.CreateDecrypterRequest{DecryptionKey: "cloudkms:resource=" + keyName}}, &Decrypter{client: &MockClient{}, decryptionKey: keyName, publicKey: pk}, false},
{"ok with opaque uri", fields{&MockClient{
getPublicKey: func(_ context.Context, r *kmspb.GetPublicKeyRequest, _ ...gax.CallOption) (*kmspb.PublicKey, error) {
assert.NotContains(t, r.Name, "cloudkms:")
return &kmspb.PublicKey{Pem: string(pemBytes)}, nil
},
}}, args{&apiv1.CreateDecrypterRequest{DecryptionKey: "cloudkms:" + keyName}}, &Decrypter{client: &MockClient{}, decryptionKey: keyName, publicKey: pk}, false},
{"fail", fields{&MockClient{
getPublicKey: func(_ context.Context, r *kmspb.GetPublicKeyRequest, _ ...gax.CallOption) (*kmspb.PublicKey, error) {
assert.NotContains(t, r.Name, "cloudkms:")
return nil, fmt.Errorf("test error")
},
}}, args{&apiv1.CreateDecrypterRequest{DecryptionKey: ""}}, nil, true},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
k := &CloudKMS{
client: tt.fields.client,
}
got, err := k.CreateDecrypter(tt.args.req)
if tt.wantErr {
assert.Error(t, err)
return
}
assert.NoError(t, err)
assert.Equal(t, tt.want.Public(), got.Public())
})
}
}
func TestNewDecrypter(t *testing.T) {
pemBytes, err := os.ReadFile("testdata/rsapub.pem")
require.NoError(t, err)
pk, err := pemutil.ParseKey(pemBytes)
require.NoError(t, err)
type args struct {
client KeyManagementClient
decryptionKey string
}
tests := []struct {
name string
args args
want *Decrypter
wantErr bool
}{
{"ok", args{&MockClient{
getPublicKey: func(_ context.Context, r *kmspb.GetPublicKeyRequest, _ ...gax.CallOption) (*kmspb.PublicKey, error) {
assert.NotContains(t, r.Name, "cloudkms:")
return &kmspb.PublicKey{Pem: string(pemBytes)}, nil
},
}, "decryptionKey"}, &Decrypter{client: &MockClient{}, decryptionKey: "decryptionKey", publicKey: pk}, false},
{"fail get public key", args{&MockClient{
getPublicKey: func(_ context.Context, r *kmspb.GetPublicKeyRequest, _ ...gax.CallOption) (*kmspb.PublicKey, error) {
assert.NotContains(t, r.Name, "cloudkms:")
return nil, fmt.Errorf("an error")
},
}, "decryptionKey"}, nil, true},
{"fail parse pem", args{&MockClient{
getPublicKey: func(_ context.Context, r *kmspb.GetPublicKeyRequest, _ ...gax.CallOption) (*kmspb.PublicKey, error) {
assert.NotContains(t, r.Name, "cloudkms:")
return &kmspb.PublicKey{Pem: string("bad pem")}, nil
},
}, "decryptionKey"}, nil, true},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got, err := NewDecrypter(tt.args.client, tt.args.decryptionKey)
if tt.wantErr {
assert.Error(t, err)
return
}
assert.NoError(t, err)
assert.Equal(t, tt.want.decryptionKey, got.decryptionKey)
assert.Equal(t, tt.want.publicKey, pk)
})
}
}
func TestDecrypter_Public(t *testing.T) {
pemBytes, err := os.ReadFile("testdata/rsapub.pem")
require.NoError(t, err)
pk, err := pemutil.ParseKey(pemBytes)
require.NoError(t, err)
type fields struct {
client KeyManagementClient
decryptionKey string
publicKey crypto.PublicKey
}
tests := []struct {
name string
fields fields
want crypto.PublicKey
}{
{"ok", fields{&MockClient{}, "decryptionKey", pk}, pk},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
d := &Decrypter{
client: tt.fields.client,
decryptionKey: tt.fields.decryptionKey,
publicKey: tt.fields.publicKey,
}
got := d.Public()
assert.Equal(t, pk, got)
})
}
}
func TestDecrypter_Decrypt(t *testing.T) {
pemBytes, err := os.ReadFile("testdata/rsapub.pem")
require.NoError(t, err)
pk, err := pemutil.ParseKey(pemBytes)
require.NoError(t, err)
keyName := "projects/p/locations/l/keyRings/k/cryptoKeys/c/cryptoKeyVersions/1"
okClient := &MockClient{
asymmetricDecrypt: func(ctx context.Context, adr *kmspb.AsymmetricDecryptRequest, co ...gax.CallOption) (*kmspb.AsymmetricDecryptResponse, error) {
assert.NotContains(t, adr.Name, "cloudkms:")
return &kmspb.AsymmetricDecryptResponse{Plaintext: []byte("decrypted"), PlaintextCrc32C: wrapperspb.Int64(crc32c([]byte("decrypted"))), VerifiedCiphertextCrc32C: true}, nil
},
}
failClient := &MockClient{
asymmetricDecrypt: func(ctx context.Context, adr *kmspb.AsymmetricDecryptRequest, co ...gax.CallOption) (*kmspb.AsymmetricDecryptResponse, error) {
assert.NotContains(t, adr.Name, "cloudkms:")
return nil, fmt.Errorf("an error")
},
}
requestCRC32Client := &MockClient{
asymmetricDecrypt: func(ctx context.Context, adr *kmspb.AsymmetricDecryptRequest, co ...gax.CallOption) (*kmspb.AsymmetricDecryptResponse, error) {
assert.NotContains(t, adr.Name, "cloudkms:")
return &kmspb.AsymmetricDecryptResponse{Plaintext: []byte("decrypted"), PlaintextCrc32C: wrapperspb.Int64(crc32c([]byte("decrypted"))), VerifiedCiphertextCrc32C: false}, nil
},
}
responseCRC32Client := &MockClient{
asymmetricDecrypt: func(ctx context.Context, adr *kmspb.AsymmetricDecryptRequest, co ...gax.CallOption) (*kmspb.AsymmetricDecryptResponse, error) {
assert.NotContains(t, adr.Name, "cloudkms:")
return &kmspb.AsymmetricDecryptResponse{Plaintext: []byte("decrypted"), PlaintextCrc32C: wrapperspb.Int64(crc32c([]byte("wrong"))), VerifiedCiphertextCrc32C: true}, nil
},
}
var nilOpts *rsa.OAEPOptions
type fields struct {
client KeyManagementClient
decryptionKey string
publicKey crypto.PublicKey
}
type args struct {
rand io.Reader
ciphertext []byte
opts crypto.DecrypterOpts
}
tests := []struct {
name string
fields fields
args args
want []byte
wantErr bool
}{
{
name: "ok",
fields: fields{
client: okClient,
decryptionKey: keyName,
publicKey: pk,
},
args: args{
rand: rand.Reader,
ciphertext: []byte("data"),
opts: &rsa.OAEPOptions{
Hash: crypto.SHA256,
Label: nil,
},
},
want: []byte("decrypted"),
},
{
name: "ok/nil-opts",
fields: fields{
client: okClient,
decryptionKey: keyName,
publicKey: pk,
},
args: args{
rand: rand.Reader,
ciphertext: []byte("data"),
},
want: []byte("decrypted"),
},
{
name: "ok/nil-oaep-opts",
fields: fields{
client: okClient,
decryptionKey: keyName,
publicKey: pk,
},
args: args{
rand: rand.Reader,
ciphertext: []byte("data"),
opts: nilOpts,
},
want: []byte("decrypted"),
},
{
name: "fail/label-unsupported",
fields: fields{
client: okClient,
decryptionKey: keyName,
publicKey: pk,
},
args: args{
rand: rand.Reader,
ciphertext: []byte("data"),
opts: &rsa.OAEPOptions{
Hash: crypto.SHA256,
Label: []byte("label"),
},
},
wantErr: true,
},
{
name: "fail/unsupported-hash",
fields: fields{
client: okClient,
decryptionKey: keyName,
publicKey: pk,
},
args: args{
rand: rand.Reader,
ciphertext: []byte("data"),
opts: &rsa.OAEPOptions{
Hash: crypto.Hash(1000),
Label: nil,
},
},
wantErr: true,
},
{
name: "fail/pkcs1v15",
fields: fields{
client: okClient,
decryptionKey: keyName,
publicKey: pk,
},
args: args{
rand: rand.Reader,
ciphertext: []byte("data"),
opts: &rsa.PKCS1v15DecryptOptions{},
},
wantErr: true,
},
{
name: "fail/decrypt-failed",
fields: fields{
client: failClient,
decryptionKey: keyName,
publicKey: pk,
},
args: args{
rand: rand.Reader,
ciphertext: []byte("data"),
opts: &rsa.OAEPOptions{
Hash: crypto.SHA256,
Label: nil,
},
},
wantErr: true,
},
{
name: "fail/request-crc32c-failed",
fields: fields{
client: requestCRC32Client,
decryptionKey: keyName,
publicKey: pk,
},
args: args{
rand: rand.Reader,
ciphertext: []byte("data"),
opts: &rsa.OAEPOptions{
Hash: crypto.SHA256,
Label: nil,
},
},
wantErr: true,
},
{
name: "fail/response-crc32c-failed",
fields: fields{
client: responseCRC32Client,
decryptionKey: keyName,
publicKey: pk,
},
args: args{
rand: rand.Reader,
ciphertext: []byte("data"),
opts: &rsa.OAEPOptions{
Hash: crypto.SHA256,
Label: nil,
},
},
wantErr: true,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
d := &Decrypter{
client: tt.fields.client,
decryptionKey: tt.fields.decryptionKey,
publicKey: tt.fields.publicKey,
}
got, err := d.Decrypt(tt.args.rand, tt.args.ciphertext, tt.args.opts)
if tt.wantErr {
assert.Error(t, err)
return
}
assert.NoError(t, err)
assert.Equal(t, tt.want, got)
})
}
}
func Test_crc32c(t *testing.T) {
tests := []struct {
name string
want int64
}{
{"123456789", 0xe3069283},
{"The quick brown fox jumps over the lazy dog", 0x22620404},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := crc32c([]byte(tt.name)); got != tt.want {
t.Errorf("crc32c() = %v, want %v", got, tt.want)
}
})
}
}
|
