diff options
| -rw-r--r-- | crypto/src/crypto/modes/OCBBlockCipher.cs | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/crypto/src/crypto/modes/OCBBlockCipher.cs b/crypto/src/crypto/modes/OCBBlockCipher.cs index e7dc466e6..91fdfff18 100644 --- a/crypto/src/crypto/modes/OCBBlockCipher.cs +++ b/crypto/src/crypto/modes/OCBBlockCipher.cs @@ -237,7 +237,9 @@ namespace Org.BouncyCastle.Crypto.Modes public virtual byte[] GetMac() { - return Arrays.Clone(macBlock); + return macBlock == null + ? new byte[macSize] + : Arrays.Clone(macBlock); } public virtual int GetOutputSize(int len) |