org.xlattice
Interface DigSigner

public interface DigSigner

Digital signature generator. Instances of this are created by invoking Key.getSigner(String digestName).

Author:

Jim Dixon

See Also:

Key

Method Summary

java.lang.String	getAlgorithm()
int	length()
byte[]	sign() Generate a digital signature and implicitly reset().
DigSigner	update(byte[] data) Add the binary data referenced to any already processed by the message digest part of the algorithm.
DigSigner	update(byte[] data, int offset, int len)

Method Detail

getAlgorithm

java.lang.String getAlgorithm()

length

int length()

Returns:

the length of the digital signature generated

update

DigSigner update(byte[] data)
                 throws CryptoException

Add the binary data referenced to any already processed by the message digest part of the algorithm.

Throws:

CryptoException

update

DigSigner update(byte[] data,
                 int offset,
                 int len)
                 throws CryptoException

Throws:

CryptoException

sign

byte[] sign()
            throws CryptoException

Generate a digital signature and implicitly reset().

Returns:

the digital signature as a byte array

Throws:

CryptoException