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Freenet.crypt
Class SHA1
java.lang.ObjectFreenet.crypt.SHA1
- public class SHA1
- extends java.lang.Object
This is a simple port of Steve Reid's SHA-1 code into Java. I've run his test vectors through the code and they all pass.
| Field Summary | |
private int[] |
block
|
private int |
blockIndex
|
private long |
count
|
private int[] |
dd
|
private byte[] |
digestBits
|
private boolean |
digestValid
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private boolean |
NSA
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private int[] |
state
|
| Constructor Summary | |
SHA1()
Simple constructor for SHA-1 |
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SHA1(boolean b)
Variant constructor |
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| Method Summary | |
private int |
blk(int i)
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private int |
blk0(int i)
|
byte[] |
digest()
Return completed digest. |
protected java.lang.String |
digout()
Print out the digest in a form that can be easily compared to the test vectors. |
java.lang.String |
doHash(java.lang.String s)
This takes a string and return a hash of that string. |
void |
extract(int[] digest,
int offset)
retrieve the value of a hash |
protected void |
finish()
Complete processing on the message digest. |
void |
frob()
zero the count and state arrays; used to support Pegwit's anomalous 2-barrel hsahing |
protected void |
init()
Initializes new context |
static void |
main(java.lang.String[] args)
test driver |
private void |
R0(int[] data,
int v,
int w,
int x,
int y,
int z,
int i)
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private void |
R1(int[] data,
int v,
int w,
int x,
int y,
int z,
int i)
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private void |
R2(int[] data,
int v,
int w,
int x,
int y,
int z,
int i)
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private void |
R3(int[] data,
int v,
int w,
int x,
int y,
int z,
int i)
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private void |
R4(int[] data,
int v,
int w,
int x,
int y,
int z,
int i)
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private int |
rol(int value,
int bits)
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static void |
SHAselfTest()
perfoms a self-test - spits out the test vector outputs on System.out |
private void |
transform()
Hash a single 512-bit block. |
void |
update(byte b)
Add one byte to the digest. |
void |
update(byte[] data,
int offset,
int length)
Add many bytes to the digest. |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Field Detail |
state
private int[] state
count
private long count
digestValid
private boolean digestValid
digestBits
private byte[] digestBits
NSA
private boolean NSA
block
private int[] block
blockIndex
private int blockIndex
dd
private int[] dd
| Constructor Detail |
SHA1
public SHA1(boolean b)
- Variant constructor
SHA1
public SHA1()
- Simple constructor for SHA-1
| Method Detail |
doHash
public java.lang.String doHash(java.lang.String s)
- This takes a string and return a hash of that string.
extract
public void extract(int[] digest,
int offset)
- retrieve the value of a hash
rol
private final int rol(int value,
int bits)
blk0
private final int blk0(int i)
blk
private final int blk(int i)
R0
private final void R0(int[] data,
int v,
int w,
int x,
int y,
int z,
int i)
R1
private final void R1(int[] data,
int v,
int w,
int x,
int y,
int z,
int i)
R2
private final void R2(int[] data,
int v,
int w,
int x,
int y,
int z,
int i)
R3
private final void R3(int[] data,
int v,
int w,
int x,
int y,
int z,
int i)
R4
private final void R4(int[] data,
int v,
int w,
int x,
int y,
int z,
int i)
transform
private void transform()
- Hash a single 512-bit block. This is the core of the algorithm.
Note that working with arrays is very inefficent in Java as it
does a class cast check each time you store into the array.
frob
public void frob()
- zero the count and state arrays; used to support
Pegwit's anomalous 2-barrel hsahing
init
protected void init()
- Initializes new context
update
public void update(byte b)
- Add one byte to the digest. When this is implemented
all of the abstract class methods end up calling
this method for types other than bytes.
update
public void update(byte[] data,
int offset,
int length)
- Add many bytes to the digest.
digest
public byte[] digest()
- Return completed digest.
finish
protected void finish()
- Complete processing on the message digest.
digout
protected java.lang.String digout()
- Print out the digest in a form that can be easily compared
to the test vectors.
main
public static void main(java.lang.String[] args)
- test driver
SHAselfTest
public static void SHAselfTest()
- perfoms a self-test - spits out the test vector outputs on System.out
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| Home >> All >> Freenet >> [ crypt overview ] | PREV CLASS NEXT CLASS | ||||||||
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SUMMARY: JAVADOC | SOURCE | DOWNLOAD | NESTED | FIELD | CONSTR | METHOD |
DETAIL: FIELD | CONSTR | METHOD | ||||||||