diff options
Diffstat (limited to 'src/pkg/crypto/rsa')
-rw-r--r-- | src/pkg/crypto/rsa/rsa.go | 8 | ||||
-rw-r--r-- | src/pkg/crypto/rsa/rsa_test.go | 2 |
2 files changed, 9 insertions, 1 deletions
diff --git a/src/pkg/crypto/rsa/rsa.go b/src/pkg/crypto/rsa/rsa.go index c7a8d2053..faf914991 100644 --- a/src/pkg/crypto/rsa/rsa.go +++ b/src/pkg/crypto/rsa/rsa.go @@ -274,6 +274,14 @@ func EncryptOAEP(hash hash.Hash, rand io.Reader, pub *PublicKey, msg []byte, lab m.SetBytes(em) c := encrypt(new(big.Int), pub, m) out = c.Bytes() + + if len(out) < k { + // If the output is too small, we need to left-pad with zeros. + t := make([]byte, k) + copy(t[k-len(out):], out) + out = t + } + return } diff --git a/src/pkg/crypto/rsa/rsa_test.go b/src/pkg/crypto/rsa/rsa_test.go index df1f17f17..22d4576e8 100644 --- a/src/pkg/crypto/rsa/rsa_test.go +++ b/src/pkg/crypto/rsa/rsa_test.go @@ -66,7 +66,7 @@ func TestEncryptOAEP(t *testing.T) { t.Errorf("#%d,%d error: %s", i, j, err) } if bytes.Compare(out, message.out) != 0 { - t.Errorf("#%d,%d bad result: %s (want %s)", i, j, out, message.out) + t.Errorf("#%d,%d bad result: %x (want %x)", i, j, out, message.out) } } } |