java.lang.Object
gnu.javax.crypto.pad.BasePad
gnu.javax.crypto.pad.SSL3
- All Implemented Interfaces:
- IPad
- public class SSL3
- extends BasePad
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.
|
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 java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
SSL3
public SSL3()
setup
public void setup()
- Description copied from class:
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) 55 method returns.
- Specified by:
setup in class BasePad
pad
public byte[] pad(byte[] in,
int off,
int len)
- Description copied from interface:
IPad
- Returns the byte sequence that should be appended to the designated input.
- Specified by:
pad in interface IPad- Specified by:
pad in class BasePad
unpad
public int unpad(byte[] in,
int off,
int len)
throws WrongPaddingException
- Description copied from interface:
IPad
- Returns the number of bytes to discard from a designated input buffer.
- Specified by:
unpad in interface IPad- Specified by:
unpad in class BasePad
JAVADOC | 
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