de.intarsys.tools.digest
Interface IDigestEnvironment

All Known Implementing Classes:

StandardDigestEnvironment

public interface IDigestEnvironment

Factory methods for IDigest and IDigester.

Method Summary

IDigest	createDigest(String algorithmName, byte[] bytes) An IDigest object from an algorithm name and the raw bytes.
IDigester	createDigester(String algorithmName) An IDigester for the given "algorithmName".
IDigest	decode(byte[] bytes) Decode an DER encoded representation to an IDigest.
byte[]	encode(IDigest digest) Encode an IDigest to a DER representation.

Method Detail

createDigest

IDigest createDigest(String algorithmName,
                     byte[] bytes)

An IDigest object from an algorithm name and the raw bytes.

Parameters:

algorithmName -

bytes -

Returns:

An IDigest object from an algorithm name and the raw bytes.

createDigester

IDigester createDigester(String algorithmName)
                         throws NoSuchAlgorithmException

An IDigester for the given "algorithmName".

Parameters:

algorithmName -

Returns:

An IDigester for the given "algorithmName".

Throws:

NoSuchAlgorithmException

decode

IDigest decode(byte[] bytes)
               throws IOException

Decode an DER encoded representation to an IDigest.

Parameters:

bytes -

Returns:

The decoded IDigest

Throws:

IOException - If no decoder installed or "bytes" are not a correct encoded DER representation.

encode

byte[] encode(IDigest digest)
              throws IOException

Encode an IDigest to a DER representation.

Parameters:

digest -

Returns:

The DER encoded IDigest

Throws:

IOException - If no decoder installed.