public class Skein384 extends Object
This class implements the Skein-384 digest algorithm under the
Digest API. In the Skein specification, that function is
called under the full name "Skein-512-384".
==========================(LICENSE BEGIN)============================ Copyright (c) 2007-2010 Projet RNRT SAPHIR Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ===========================(LICENSE END)=============================
| Constructor and Description |
|---|
Skein384()
Create the engine.
|
| Modifier and Type | Method and Description |
|---|---|
Digest |
copy()
Clone the current state.
|
byte[] |
digest()
Finalize the current hash computation and return the hash value
in a newly-allocated array.
|
byte[] |
digest(byte[] inbuf)
Input some bytes, then finalize the current hash computation
and return the hash value in a newly-allocated array.
|
int |
digest(byte[] outbuf,
int off,
int len)
Finalize the current hash computation and store the hash value
in the provided output buffer.
|
int |
getBlockLength()
Return the "block length" for the hash function.
|
int |
getDigestLength()
Get the natural hash function output length (in bytes).
|
void |
reset()
Reset the object: this makes it suitable for a new hash
computation.
|
String |
toString()
Get the display name for this function (e.g.
|
void |
update(byte in)
Insert one more input data byte.
|
void |
update(byte[] inbuf)
Insert some more bytes.
|
void |
update(byte[] inbuf,
int off,
int len)
Insert some more bytes.
|
public int getDigestLength()
DigestDigestpublic void update(byte in)
Digestpublic void update(byte[] inbuf)
Digestpublic void update(byte[] inbuf,
int off,
int len)
Digestpublic byte[] digest()
Digestpublic byte[] digest(byte[] inbuf)
Digestpublic int digest(byte[] outbuf,
int off,
int len)
Digestlen parameter
contains the maximum number of bytes that should be written;
no more bytes than the natural hash function output length will
be produced. If len is smaller than the natural
hash output length, the hash output is truncated to its first
len bytes. The object is resetted.public void reset()
Digestpublic Digest copy()
Digestpublic int getBlockLength()
DigestReturn the "block length" for the hash function. This
value is naturally defined for iterated hash functions
(Merkle-Damgard). It is used in HMAC (that's what the
HMAC specification
names the "B" parameter).
If the function is "block-less" then this function may
return -n where n is an integer such that the
block length for HMAC ("B") will be inferred from the
key length, by selecting the smallest multiple of n
which is no smaller than the key length. For instance, for
the Fugue-xxx hash functions, this function returns -4: the
virtual block length B is the HMAC key length, rounded up to
the next multiple of 4.
getBlockLength in interface Digest-nDigestCopyright © 2018. All rights reserved.