public class Sha256 extends BaseHash
Implementation of SHA2-1 [SHA-256] per the IETF Draft Specification.
References:
Constructor and Description |
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Sha256()
Trivial 0-arguments constructor.
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Modifier and Type | Method and Description |
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java.lang.Object |
clone()
Returns a clone copy of this instance.
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static int[] |
G(int hh0,
int hh1,
int hh2,
int hh3,
int hh4,
int hh5,
int hh6,
int hh7,
byte[] in,
int offset) |
protected byte[] |
getResult()
Constructs the result from the contents of the current context.
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protected byte[] |
padBuffer()
Returns the byte array to use as padding before completing a hash
operation.
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protected void |
resetContext()
Resets the instance for future re-use.
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boolean |
selfTest()
A basic test.
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protected void |
transform(byte[] in,
int offset)
The block digest transformation per se.
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public static final int[] G(int hh0, int hh1, int hh2, int hh3, int hh4, int hh5, int hh6, int hh7, byte[] in, int offset)
public java.lang.Object clone()
IMessageDigest
Returns a clone copy of this instance.
clone
in interface IMessageDigest
clone
in class BaseHash
protected void transform(byte[] in, int offset)
BaseHash
The block digest transformation per se.
protected byte[] padBuffer()
BaseHash
Returns the byte array to use as padding before completing a hash operation.
protected byte[] getResult()
BaseHash
Constructs the result from the contents of the current context.
protected void resetContext()
BaseHash
resetContext
in class BaseHash
public boolean selfTest()
IMessageDigest
A basic test. Ensures that the digest of a pre-determined message is equal to a known pre-computed value.
selfTest
in interface IMessageDigest
selfTest
in class BaseHash
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