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kms_test.go
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kms_test.go
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package main
import (
"errors"
"testing"
"github.com/stretchr/testify/assert"
)
const mockKmsKey = `Q1PuWtB1E7F1sLpvfBGjL+ZuH+fSCOvMDqTyRQE4GTg=`
type MockKmsClient struct {
}
func (k *MockKmsClient) GenerateDataKey(keyID string) (*[32]byte, []byte, error) {
if keyID != "123" {
return nil, nil, errors.New("Expected keyID=123")
}
key, err := decode(mockKmsKey)
if err != nil {
return nil, nil, err
}
dataKey, err := asKey(key)
if err != nil {
return nil, nil, err
}
return dataKey, []byte(mockKmsKey), nil
}
func (k *MockKmsClient) Decrypt(data []byte) (*[32]byte, error) {
key, err := decode(string(data))
if err != nil {
return nil, err
}
dataKey, err := asKey(key)
if err != nil {
return nil, err
}
return dataKey, nil
}
func newMockKmsClient() *MockKmsClient {
return &MockKmsClient{}
}
func TestKms(t *testing.T) {
client := newMockKmsClient()
encryption := newKmsEncryptionStrategy(client, "123")
decryption := newKmsDecryptionStrategy(client)
envelope, err := encryption.Encrypt([]byte("secret"))
assert.Nil(t, err)
plaintext, err := decryption.Decrypt(envelope)
assert.Nil(t, err)
assert.Equal(t, "secret", string(plaintext))
}
func TestCompositeDecryptionStrategy(t *testing.T) {
composite := newCompositeDecryptionStrategy()
composite.Add("KMS", newKmsDecryptionStrategy(newMockKmsClient()))
composite.Add("NACL", newKeyDecryptionStrategy(
pemRead("./resources/test/keys/config-public-key.pem"),
pemRead("./resources/test/keys/master-private-key.pem")))
{
plaintext, err := composite.Decrypt("ENC[KMS,RP+BAwEBCmttc1BheWxvYWQB/4IAAQMBEEVuY3J5cHRlZERhdGFLZXkBCgABBU5vbmNlAf+EAAEHTWVzc2FnZQEKAAAAGf+DAQEBCVsyNF11aW50OAH/hAABBgEwAABw/4IBLFExUHVXdEIxRTdGMXNMcHZmQkdqTCtadUgrZlNDT3ZNRHFUeVJRRTRHVGc9ARgr/502fv/vQP+S/5H/k//gOf/gWDNh/53/3in/uf/L/5r/mTxbARYoewY+qb+skiPKwGUnT/2GADtui80vAA==]")
assert.Nil(t, err)
assert.Equal(t, "secret", string(plaintext))
}
{
plaintext, err := composite.Decrypt("ENC[NACL,fB7RSmpONiUGzaHtd8URiTSKqfBhor6BsJLSQErHH9NSgLTnxNLF60YS8ZT2IQ==]")
assert.Nil(t, err)
assert.Equal(t, "secret", string(plaintext))
}
{
plaintext, err := composite.Decrypt("ENC[ACL,fB7RSmpONiUGzaHtd8URiTSKqfBhor6BsJLSQErHH9NSgLTnxNLF60YS8ZT2IQ==]")
assert.Nil(t, plaintext)
assert.NotNil(t, err)
assert.Equal(t, "Not configured for decrypting ENC[,..] values", err.Error())
}
}
func TestUnsupportedDecryptionStrategy(t *testing.T) {
composite := newCompositeDecryptionStrategy()
plaintext, err := composite.Decrypt("ENC[NACL,fB7RSmpONiUGzaHtd8URiTSKqfBhor6BsJLSQErHH9NSgLTnxNLF60YS8ZT2IQ==]")
assert.Nil(t, plaintext)
assert.NotNil(t, err)
assert.Equal(t, "Not configured for decrypting ENC[NACL,..] values", err.Error())
}