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package nssdb
import (
"encoding/hex"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"golang.org/x/crypto/cryptobyte"
)
func TestPbes2Params_marshal(t *testing.T) {
pbes2 := &pbes2Params{
keyGen: &pbkdf2Params{
Salt: encryptedValueSalt,
Iterations: 1,
KeyLength: 32,
PRF: hmacSHA256OID,
},
encryption: &aes256CBCParams{
InitializationVector: encryptedValueIV,
},
}
b := &cryptobyte.Builder{}
pbes2.marshal(b)
got, err := b.Bytes()
require.NoError(t, err)
assert.Equal(t, encryptedValuePBES2, got)
}
func TestPbes2Params_unmarshal(t *testing.T) {
t.Run("ok", func(t *testing.T) {
pbes2 := &pbes2Params{}
err := pbes2.unmarshal(cryptobyte.String(encryptedValuePBES2Params))
require.NoError(t, err)
assert.NotNil(t, pbes2.keyGen)
pbkdf2, ok := pbes2.keyGen.(*pbkdf2Params)
require.True(t, ok, "decoded pbes2 keyGen is %T", pbes2.keyGen)
assert.Equal(t, encryptedValueSalt, pbkdf2.Salt)
assert.EqualValues(t, 1, pbkdf2.Iterations)
assert.EqualValues(t, 32, pbkdf2.KeyLength)
assert.True(t, pbkdf2.PRF.Equal(hmacSHA256OID))
assert.NotNil(t, pbes2.encryption)
aes256CBC, ok := pbes2.encryption.(*aes256CBCParams)
require.True(t, ok, "decoded pbes2 encryption is %T", pbes2.encryption)
assert.Equal(t, encryptedValueIV, aes256CBC.InitializationVector)
})
extraBytes := make([]byte, len(encryptedValuePBES2Params)+1)
copy(extraBytes, encryptedValuePBES2Params)
extraBytes[len(encryptedValuePBES2Params)] = 0x00
extraBytes[1]++ // length prefix
errors := map[string][]byte{
"decode pbes2 parameters": nil,
"decode keygen sequence": zero(encryptedValuePBES2Params, 2),
"decode encryption sequence": zero(encryptedValuePBES2Params, 69),
"decode keygen algorithm": zero(encryptedValuePBES2Params, 4),
"unmarshal pbkdf2 parameters": zero(encryptedValuePBES2Params, 15),
"unsupported keygen algorithm": zero(encryptedValuePBES2Params, 14),
"decode encryption algorithm": zero(encryptedValuePBES2Params, 71),
"unsupported encryption algorithm": zero(encryptedValuePBES2Params, 81),
"unprocessed bytes in pbes parameter sequence": extraBytes,
}
for k, v := range errors {
t.Run(k, func(t *testing.T) {
err := new(pbes2Params).unmarshal(v)
assert.ErrorContains(t, err, k)
})
}
}
func TestNewPBKDF2(t *testing.T) {
t.Run("empty password", func(t *testing.T) {
pbkdf2, err := newPBKDF2(true)
require.NoError(t, err)
assert.Len(t, pbkdf2.Salt, 32)
assert.Equal(t, pbkdf2.Iterations, 1)
assert.True(t, pbkdf2.PRF.Equal(hmacSHA256OID))
})
t.Run("non-empty password", func(t *testing.T) {
pbkdf2, err := newPBKDF2(false)
require.NoError(t, err)
assert.Equal(t, pbkdf2.Iterations, 10000)
})
}
func TestPbkdf2Params_key(t *testing.T) {
passKey, err := hex.DecodeString("94E5632537955DF320D4E307AEEDDCBF0966DA66")
require.NoError(t, err)
salt, err := hex.DecodeString("4C76DC94CF849B060FD057816B241053DD737F099D7F43BFBE9AE46F48B46361")
require.NoError(t, err)
want, err := hex.DecodeString("97949AA294988B0C95ED0A06A6FB38CCF4E3AC0EED5195B15CB11955620350B1")
require.NoError(t, err)
t.Run("ok", func(t *testing.T) {
p, err := newPBKDF2(true)
require.NoError(t, err)
p.Salt = salt
got, err := p.key(passKey)
require.NoError(t, err)
assert.Equal(t, want, got)
})
t.Run("unsupported prf", func(t *testing.T) {
p, err := newPBKDF2(true)
require.NoError(t, err)
p.PRF = aes256CBCOID
_, err = p.key(passKey)
assert.Error(t, err)
})
}
func TestPbkdf2Params_marshal(t *testing.T) {
p, err := newPBKDF2(true)
require.NoError(t, err)
p.Salt = encryptedValueSalt
b := &cryptobyte.Builder{}
p.marshal(b)
got, err := b.Bytes()
require.NoError(t, err)
assert.Equal(t, encryptedValuePBKDF2, got)
}
func TestPbkdf2Params_unmarshal(t *testing.T) {
t.Run("ok", func(t *testing.T) {
p := &pbkdf2Params{}
err := p.unmarshal(encryptedValuePBKDF2Params)
assert.NoError(t, err)
})
errors := map[string][]byte{
"decode parameters": nil,
"decode salt": zero(encryptedValuePBKDF2Params, 2),
"decode iterations": zero(encryptedValuePBKDF2Params, 36),
"decode key length": zero(encryptedValuePBKDF2Params, 39),
"decode pseudorandom function sequence": zero(encryptedValuePBKDF2Params, 42),
"decode pseudorandom function oid": zero(encryptedValuePBKDF2Params, 44),
}
for k, v := range errors {
t.Run(k, func(t *testing.T) {
err := new(pbkdf2Params).unmarshal(v)
assert.ErrorContains(t, err, k)
})
}
}
func TestNewAES256CBC(t *testing.T) {
aes, err := newAES256CBC()
require.NoError(t, err)
assert.Len(t, aes.InitializationVector, 16)
}
func TestAes256CBCParams_encrypt(t *testing.T) {
key, err := hex.DecodeString("2a5b298761825d178b1b8244bc1082770b12f028289c15c1bf0607cccc3a0f51")
require.NoError(t, err)
plaintext, err := hex.DecodeString("f8d5e637123b2bdad965110e85b1dc4aea0d0d075cdbe982937dae7d9bb43e20")
require.NoError(t, err)
iv, err := hex.DecodeString("040E7F78BDA94F72DC1AF7C437C50B8C")
require.NoError(t, err)
ciphertext, err := hex.DecodeString("D1C6303C053AB06DCC123B035CA6086B9139632B2FE58E5254364A60AC08939AC8ECBDD17DD08878E43C65E94136B1E6")
require.NoError(t, err)
aes256 := &aes256CBCParams{
InitializationVector: iv,
}
gotCiphertext, err := aes256.encrypt(key, plaintext)
require.NoError(t, err)
assert.Equal(t, ciphertext, gotCiphertext)
gotPlaintext, err := aes256.decrypt(key, ciphertext)
require.NoError(t, err)
assert.Equal(t, plaintext, gotPlaintext)
}
func TestAes256CBCParams_marshal(t *testing.T) {
b := &cryptobyte.Builder{}
p := &aes256CBCParams{
InitializationVector: encryptedValueIV,
}
p.marshal(b)
got, err := b.Bytes()
require.NoError(t, err)
assert.Equal(t, encryptedValueAES256CBC, got)
}
func TestAes256CBCParams_unmarshal(t *testing.T) {
p := &aes256CBCParams{}
err := p.unmarshal(encryptedValueIV)
assert.NoError(t, err)
assert.Equal(t, encryptedValueIV, p.InitializationVector)
}
func TestDecodeCipherText(t *testing.T) {
t.Run("ok", func(t *testing.T) {
edi, err := decodeCipherText(encryptedValue)
require.NoError(t, err)
assert.Equal(t, encryptedData, edi.encryptedData)
assert.Len(t, edi.encryptedData, 16)
assert.NotNil(t, edi.pbes2.keyGen)
pbkdf2, ok := edi.pbes2.keyGen.(*pbkdf2Params)
require.True(t, ok, "decoded pbes2 keyGen is %T", edi.pbes2.keyGen)
assert.Equal(t, encryptedValueSalt, pbkdf2.Salt)
assert.EqualValues(t, 1, pbkdf2.Iterations)
assert.EqualValues(t, 32, pbkdf2.KeyLength)
assert.Equal(t, "1.2.840.113549.2.9", pbkdf2.PRF.String())
assert.NotNil(t, edi.pbes2.encryption)
aes256CBC, ok := edi.pbes2.encryption.(*aes256CBCParams)
require.True(t, ok, "decoded pbes2 encryption is %T", edi.pbes2.encryption)
assert.Equal(t, encryptedValueIV, aes256CBC.InitializationVector)
})
extraBytes := make([]byte, len(encryptedValue)+1)
copy(extraBytes, encryptedValue)
extraBytes[len(encryptedValue)] = 0x00
extraBytes[2]++ // 2nd byte of length prefix
errors := map[string][]byte{
"decode cipher text": nil,
"decode parameters": zero(encryptedValue, 3),
"decode encrypted data": zero(encryptedValue, 114),
"unprocessed cipher text": extraBytes,
"decode pbes2 oid": zero(encryptedValue, 5),
"invalid pbes2 oid": zero(encryptedValue, 15),
"unmarshal pbes2": zero(encryptedValue, 16),
}
for k, v := range errors {
t.Run(k, func(t *testing.T) {
_, err := decodeCipherText(v)
assert.ErrorContains(t, err, k)
})
}
}
func TestEncodeCipherText(t *testing.T) {
pbes2 := &pbes2Params{
keyGen: &pbkdf2Params{
Salt: encryptedValueSalt,
Iterations: 1,
KeyLength: 32,
PRF: hmacSHA256OID,
},
encryption: &aes256CBCParams{
InitializationVector: encryptedValueIV,
},
}
got, err := encodeCipherText(encryptedData, pbes2)
require.NoError(t, err)
assert.Equal(t, encryptedValue, got)
}
func TestNSSDB_encrypt(t *testing.T) {
plain := []byte("plaintext")
db := &NSSDB{
passKey: []byte("passKey"),
emptyPassword: true,
}
encodedCipherText, err := db.encrypt(plain)
require.NoError(t, err)
decodedPlainText, err := db.decrypt(encodedCipherText)
require.NoError(t, err)
assert.Equal(t, plain, decodedPlainText)
}
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