IMessageDigest Interface

void update (byte b)

Function

Updates the hash being computed with a single byte.

void update (byte[] buf, int offset, int length)

Function

Update the hash being computed with length of the bytes in buf starting at offset. The programmer should ensure that buf is at least offset + length bytes long.

byte [] digest ( )

Function

Finishes the computation of the hash and returns the result as a byte array. The input read thusfar may be padded first (depending on the algorithm), and the instance is reset.

java.lang.String name ( )

Function

Returns the canonical name of this message digest.

int hashSize ( )

Function

Returns the size of the final hash (the byte array returned by digest()) in bytes.

int blockSize ( )

Function

Returns the algorithm's internal block size, in bytes.

void reset ( )

Function

Resets the internal state of the hash, making its state equivalent to that of a newly-created instance.

boolean selfTest ( )

Function

Performs a simple conformance test of the underlying implementation, to guard against implementation or environment errors. Returns true if the test succeeds, false if it fails.

java.lang.Object clone ( )

Function

Copies the state of this instance into a new instance, returning the copy. This copy can then be used in the same way as the original instance.