org.spongycastle.operator

Interface DigestCalculator

All Known Implementing Classes:

TruncatingDigestCalculator

public interface DigestCalculator

General interface for an operator that is able to calculate a digest from a stream of output.

Method Summary

Modifier and Type	Method and Description
org.spongycastle.asn1.x509.AlgorithmIdentifier	getAlgorithmIdentifier() Return the algorithm identifier representing the digest implemented by this calculator.
byte[]	getDigest() Return the digest calculated on what has been written to the calculator's output stream.
java.io.OutputStream	getOutputStream() Returns a stream that will accept data for the purpose of calculating a digest.

Method Detail

getAlgorithmIdentifier

org.spongycastle.asn1.x509.AlgorithmIdentifier getAlgorithmIdentifier()

Return the algorithm identifier representing the digest implemented by this calculator.

Returns:

algorithm id and parameters.

getOutputStream

java.io.OutputStream getOutputStream()

Returns a stream that will accept data for the purpose of calculating a digest. Use org.spongycastle.util.io.TeeOutputStream if you want to accumulate the data on the fly as well.

Returns:

an OutputStream

getDigest

byte[] getDigest()

Return the digest calculated on what has been written to the calculator's output stream.

Returns:

a digest.