| java.lang.Object
 org.bouncycastle.crypto.engines.CAST5Engine
All known Subclasses: org.bouncycastle.crypto.engines.CAST6Engine,
| CAST5Engine | | public class CAST5Engine implements BlockCipher(Code) | | A class that provides CAST key encryption operations,
such as encoding data and generating keys.
All the algorithms herein are from the Internet RFC's
RFC2144 - CAST5 (64bit block, 40-128bit key)
RFC2612 - CAST6 (128bit block, 128-256bit key)
and implement a simplified cryptography interface.
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| Method Summary | |
| final protected void | Bits32ToBytes(int in, byte[] b, int offset)
| | final protected void | Bits32ToInts(int in, int[] b, int offset)
| | final protected int | BytesTo32bits(byte[] b, int i)
| | final protected void | CAST_Decipher(int L16, int R16, int result)
| | final protected void | CAST_Encipher(int L0, int R0, int result)
Does the 16 rounds to encrypt the block. | | final protected int | F1(int D, int Kmi, int Kri)
The first of the three processing functions for the
encryption and decryption. | | final protected int | F2(int D, int Kmi, int Kri)
The second of the three processing functions for the
encryption and decryption. | | final protected int | F3(int D, int Kmi, int Kri)
The third of the three processing functions for the
encryption and decryption. | | final protected int | IntsTo32bits(int[] b, int i)
| | protected int | decryptBlock(byte[] src, int srcIndex, byte[] dst, int dstIndex)
Decrypt the given input starting at the given offset and place
the result in the provided buffer starting at the given offset. | | protected int | encryptBlock(byte[] src, int srcIndex, byte[] dst, int dstIndex)
Encrypt the given input starting at the given offset and place
the result in the provided buffer starting at the given offset. | | public String | getAlgorithmName()
| | public int | getBlockSize()
| | public void | init(boolean encrypting, CipherParameters params)
initialise a CAST cipher. | | public int | processBlock(byte[] in, int inOff, byte[] out, int outOff)
| | public void | reset()
| | protected void | setKey(byte[] key)
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| BLOCK_SIZE | | final protected static int BLOCK_SIZE(Code) | | |
| M32 | | final protected static int M32(Code) | | |
| MAX_ROUNDS | | final protected static int MAX_ROUNDS(Code) | | |
| RED_ROUNDS | | final protected static int RED_ROUNDS(Code) | | |
| S1S2S3S4S5S6S7S8 | | final protected static int[] S1S2S3S4S5S6S7S8(Code) | | |
| CAST5Engine | | public CAST5Engine()(Code) | | |
| Bits32ToBytes | | final protected void Bits32ToBytes(int in, byte[] b, int offset)(Code) | | |
| Bits32ToInts | | final protected void Bits32ToInts(int in, int[] b, int offset)(Code) | | |
| BytesTo32bits | | final protected int BytesTo32bits(byte[] b, int i)(Code) | | |
| CAST_Decipher | | final protected void CAST_Decipher(int L16, int R16, int result)(Code) | | |
| CAST_Encipher | | final protected void CAST_Encipher(int L0, int R0, int result)(Code) | | Does the 16 rounds to encrypt the block.
Parameters:
L0 - the LH-32bits of the plaintext block
Parameters:
R0 - the RH-32bits of the plaintext block |
| F1 | | final protected int F1(int D, int Kmi, int Kri)(Code) | | The first of the three processing functions for the
encryption and decryption.
Parameters:
D - the input to be processed
Parameters:
Kmi - the mask to be used from Km[n]
Parameters:
Kri - the rotation value to be used |
| F2 | | final protected int F2(int D, int Kmi, int Kri)(Code) | | The second of the three processing functions for the
encryption and decryption.
Parameters:
D - the input to be processed
Parameters:
Kmi - the mask to be used from Km[n]
Parameters:
Kri - the rotation value to be used |
| F3 | | final protected int F3(int D, int Kmi, int Kri)(Code) | | The third of the three processing functions for the
encryption and decryption.
Parameters:
D - the input to be processed
Parameters:
Kmi - the mask to be used from Km[n]
Parameters:
Kri - the rotation value to be used |
| IntsTo32bits | | final protected int IntsTo32bits(int[] b, int i)(Code) | | |
| decryptBlock | | protected int decryptBlock(byte[] src, int srcIndex, byte[] dst, int dstIndex)(Code) | | Decrypt the given input starting at the given offset and place
the result in the provided buffer starting at the given offset.
Parameters:
src - The plaintext buffer
Parameters:
srcIndex - An offset into src
Parameters:
dst - The ciphertext buffer
Parameters:
dstIndex - An offset into dst |
| encryptBlock | | protected int encryptBlock(byte[] src, int srcIndex, byte[] dst, int dstIndex)(Code) | | Encrypt the given input starting at the given offset and place
the result in the provided buffer starting at the given offset.
Parameters:
src - The plaintext buffer
Parameters:
srcIndex - An offset into src
Parameters:
dst - The ciphertext buffer
Parameters:
dstIndex - An offset into dst |
| getBlockSize | | public int getBlockSize()(Code) | | |
| init | | public void init(boolean encrypting, CipherParameters params)(Code) | | initialise a CAST cipher.
Parameters:
encrypting - whether or not we are for encryption.
Parameters:
params - the parameters required to set up the cipher.
exception:
IllegalArgumentException - if the params argument isinappropriate. |
| processBlock | | public int processBlock(byte[] in, int inOff, byte[] out, int outOff)(Code) | | |
| reset | | public void reset()(Code) | | |
| setKey | | protected void setKey(byte[] key)(Code) | | |
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