|
For the latest news and information visit The GNU Crypto project |
|||||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Objectgnu.crypto.pad.BasePad
gnu.crypto.pad.SSL3
The padding scheme used by the Secure Sockets Layer, version 3. This padding scheme is used in the block-ciphered struct, e.g.:
block-ciphered struct { opaque content[SSLCompressed.length]; opaque MAC[CipherSpec.hash_size]; uint8 padding[GenericBlockCipher.padding_length]; uint8 padding_length; } GenericBlockCipher;
Where padding_length is cipher_block_size - ((SSLCompressed.length + CipherSpec.hash_size) % cipher_block_size) - 1. That is, the padding is enough bytes to make the plaintext a multiple of the block size minus one, plus one additional byte for the padding length. The padding can be any arbitrary data.
Field Summary |
---|
Fields inherited from class gnu.crypto.pad.BasePad |
---|
blockSize, name |
Constructor Summary | |
---|---|
SSL3()
|
Method Summary | |
---|---|
byte[] |
pad(byte[] in,
int off,
int len)
Returns the byte sequence that should be appended to the designated input. |
void |
setup()
If any additional checks or resource setup must be done by the subclass, then this is the hook for it. |
int |
unpad(byte[] in,
int off,
int len)
Returns the number of bytes to discard from a designated input buffer. |
Methods inherited from class gnu.crypto.pad.BasePad |
---|
init, name, reset, selfTest |
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
public SSL3()
Method Detail |
public void setup()
BasePad
If any additional checks or resource setup must be done by the
subclass, then this is the hook for it. This method will be called before
the BasePad.init(int)
method returns.
setup
in class BasePad
public byte[] pad(byte[] in, int off, int len)
IPad
pad
in interface IPad
pad
in class BasePad
public int unpad(byte[] in, int off, int len) throws WrongPaddingException
IPad
unpad
in interface IPad
unpad
in class BasePad
WrongPaddingException
|
For the latest news and information visit The GNU Crypto project |
|||||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |