org.bouncycastle.crypto.digests

Class OpenSSLDigest

java.lang.Object

org.bouncycastle.crypto.digests.OpenSSLDigest

All Implemented Interfaces:

Digest, ExtendedDigest

Direct Known Subclasses:

OpenSSLDigest.MD5, OpenSSLDigest.SHA1, OpenSSLDigest.SHA224, OpenSSLDigest.SHA256, OpenSSLDigest.SHA384, OpenSSLDigest.SHA512

public class OpenSSLDigest
extends Object
implements ExtendedDigest

Implements the BouncyCastle Digest interface using OpenSSL's EVP API. This must be an ExtendedDigest for BcKeyStoreSpi to be able to use it.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	OpenSSLDigest.MD5
static class	OpenSSLDigest.SHA1
static class	OpenSSLDigest.SHA224
static class	OpenSSLDigest.SHA256
static class	OpenSSLDigest.SHA384
static class	OpenSSLDigest.SHA512

Constructor Summary

Constructors

Constructor and Description
OpenSSLDigest(String algorithm, int byteSize)

Method Summary

Modifier and Type	Method and Description
int	doFinal(byte[] out, int outOff) close the digest, producing the final digest value.
String	getAlgorithmName() return the algorithm name
int	getByteLength() Return the size in bytes of the internal buffer the digest applies it's compression function to.
int	getDigestSize() return the size, in bytes, of the digest produced by this message digest.
void	reset() reset the digest back to it's initial state.
void	update(byte in) update the message digest with a single byte.
void	update(byte[] in, int inOff, int len) update the message digest with a block of bytes.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

OpenSSLDigest

public OpenSSLDigest(String algorithm,
                     int byteSize)

Method Detail

getAlgorithmName

public String getAlgorithmName()

Description copied from interface: Digest

return the algorithm name

Specified by:

getAlgorithmName in interface Digest

Returns:

the algorithm name

getDigestSize

public int getDigestSize()

Description copied from interface: Digest

return the size, in bytes, of the digest produced by this message digest.

Specified by:

getDigestSize in interface Digest

Returns:

the size, in bytes, of the digest produced by this message digest.

getByteLength

public int getByteLength()

Description copied from interface: ExtendedDigest

Return the size in bytes of the internal buffer the digest applies it's compression function to.

Specified by:

getByteLength in interface ExtendedDigest

Returns:

byte length of the digests internal buffer.

reset

public void reset()

Description copied from interface: Digest

reset the digest back to it's initial state.

Specified by:

reset in interface Digest

update

public void update(byte in)

Description copied from interface: Digest

update the message digest with a single byte.

Specified by:

update in interface Digest

Parameters:

in - the input byte to be entered.

update

public void update(byte[] in,
                   int inOff,
                   int len)

Description copied from interface: Digest

update the message digest with a block of bytes.

Specified by:

update in interface Digest

Parameters:

in - the byte array containing the data.

inOff - the offset into the byte array where the data starts.

len - the length of the data.

doFinal

public int doFinal(byte[] out,
                   int outOff)

Description copied from interface: Digest

close the digest, producing the final digest value. The doFinal call leaves the digest reset.

Specified by:

doFinal in interface Digest

Parameters:

out - the array the digest is to be copied into.

outOff - the offset into the out array the digest is to start at.