org.bouncycastle.crypto.macs
public class BlockCipherMac extends Object implements Mac
Constructor Summary | |
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BlockCipherMac(BlockCipher cipher)
create a standard MAC based on a block cipher. | |
BlockCipherMac(BlockCipher cipher, int macSizeInBits)
create a standard MAC based on a block cipher with the size of the
MAC been given in bits.
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Method Summary | |
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int | doFinal(byte[] out, int outOff) |
String | getAlgorithmName() |
int | getMacSize() |
void | init(CipherParameters params) |
void | reset()
Reset the mac generator. |
void | update(byte in) |
void | update(byte[] in, int inOff, int len) |
Deprecated: use CBCBlockCipherMac
create a standard MAC based on a block cipher. This will produce an authentication code half the length of the block size of the cipher.Parameters: cipher the cipher to be used as the basis of the MAC generation.
Deprecated: use CBCBlockCipherMac
create a standard MAC based on a block cipher with the size of the MAC been given in bits.Note: the size of the MAC must be at least 16 bits (FIPS Publication 113), and in general should be less than the size of the block cipher as it reduces the chance of an exhaustive attack (see Handbook of Applied Cryptography).
Parameters: cipher the cipher to be used as the basis of the MAC generation. macSizeInBits the size of the MAC in bits, must be a multiple of 8.