| Modifier and Type | Field and Description |
|---|---|
| private byte[] | |
| private int | |
| private BlockCipher | |
| private KeyParameter | |
| private KeyParameter | |
| private byte[] | |
| private int | |
| private BlockCipherPadding |
| Access | Constructor and Description |
|---|---|
| public | ISO9797Alg3Mac(BlockCipher
the cipher to be used as the basis of the MAC generation. This must
be DESEngine. cipher)create a Retail-MAC based on a CBC block cipher. |
| public | ISO9797Alg3Mac(BlockCipher
the cipher to be used as the basis of the MAC generation. cipher, BlockCipherPadding the padding to be used to complete the last block. padding)create a Retail-MAC based on a CBC block cipher. |
| public | ISO9797Alg3Mac(BlockCipher
the cipher to be used as the basis of the MAC generation. cipher, int the size of the MAC in bits, must be a multiple of 8. macSizeInBits)create a Retail-MAC based on a block cipher with the size of the MAC been given in bits. |
| public | ISO9797Alg3Mac(BlockCipher
the cipher to be used as the basis of the MAC generation. cipher, int the size of the MAC in bits, must be a multiple of 8. macSizeInBits, BlockCipherPadding the padding to be used to complete the last block. padding)create a standard MAC based on a block cipher with the size of the MAC been given in bits. |
| Modifier and Type | Method and Description |
|---|---|
| public int | doFinal(byte[]
the array the MAC is to be output to. out, int the offset into the out buffer the output is to start at. outOff)Implements org. |
| public String | getAlgorithmName()
Implements org. |
| public int | getMacSize()
Implements org. |
| public void | init(CipherParameters
the key and other data required by the MAC. params)Implements org. |
| public void | |
| public void | update(byte
the byte to be processed. in)Implements org. |
| public void | update(byte[]
the array containing the input. in, int the index in the array the data begins at. inOff, int the length of the input starting at inOff. len)Implements org. |
| buf | back to summary |
|---|---|
| private byte[] buf | |
| bufOff | back to summary |
|---|---|
| private int bufOff | |
| cipher | back to summary |
|---|---|
| private BlockCipher cipher | |
| lastKey2 | back to summary |
|---|---|
| private KeyParameter lastKey2 | |
| lastKey3 | back to summary |
|---|---|
| private KeyParameter lastKey3 | |
| mac | back to summary |
|---|---|
| private byte[] mac | |
| macSize | back to summary |
|---|---|
| private int macSize | |
| padding | back to summary |
|---|---|
| private BlockCipherPadding padding | |
| ISO9797Alg3Mac | back to summary |
|---|---|
| public ISO9797Alg3Mac(BlockCipher cipher) create a Retail-MAC based on a CBC block cipher. This will produce an authentication code of the length of the block size of the cipher.
| |
| ISO9797Alg3Mac | back to summary |
|---|---|
| public ISO9797Alg3Mac(BlockCipher cipher, BlockCipherPadding padding) create a Retail-MAC based on a CBC block cipher. This will produce an authentication code of the length of the block size of the cipher.
| |
| ISO9797Alg3Mac | back to summary |
|---|---|
| public ISO9797Alg3Mac(BlockCipher cipher, int macSizeInBits) create a Retail-MAC based on a block cipher with the size of the MAC been given in bits. This class uses single DES CBC mode as the basis for the MAC generation. Note the size of the MAC must be at least 24 bits (FIPS Publication 81), or 16 bits if being used as a data authenticator (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).
| |
| ISO9797Alg3Mac | back to summary |
|---|---|
| public ISO9797Alg3Mac(BlockCipher cipher, int macSizeInBits, BlockCipherPadding padding) create a standard MAC based on a block cipher with the size of the MAC been given in bits. This class uses single DES CBC mode as the basis for the MAC generation. The final block is decrypted and then encrypted using the middle and right part of the key. Note the size of the MAC must be at least 24 bits (FIPS Publication 81), or 16 bits if being used as a data authenticator (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).
| |
| doFinal | back to summary |
|---|---|
| public int doFinal(byte[] out, int outOff) Implements org. Doc from org. Compute the final stage of the MAC writing the output to the out parameter. doFinal leaves the MAC in the same state it was after the last init.
| |
| getAlgorithmName | back to summary |
|---|---|
| public String getAlgorithmName() Implements org. Doc from org. Return the name of the algorithm the MAC implements.
| |
| getMacSize | back to summary |
|---|---|
| public int getMacSize() Implements org. Doc from org. Return the block size for this MAC (in bytes).
| |
| init | back to summary |
|---|---|
| public void init(CipherParameters params) Implements org. Doc from org. Initialise the MAC.
| |
| reset | back to summary |
|---|---|
| public void reset() Implements org. Reset the mac generator. | |
| update | back to summary |
|---|---|
| public void update(byte in) Implements org. Doc from org. add a single byte to the mac for processing.
| |
| update | back to summary |
|---|---|
| public void update(byte[] in, int inOff, int len) Implements org.
| |