/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/**
* This file contains the code for the SslMacMD5 and SslMacSHA1 implementations.
* The SSL 3.0 MAC is a variation of the HMAC algorithm.
*
* Note that we don't implement Cloneable as that is not needed for SSL.
*
* @author Andreas Sterbenz
* @since 1.6
*/
final class SslMacCore {
private byte[] secret;
/**
* Standard constructor, creates a new SslMacCore instance instantiating
* a MessageDigest of the specified name.
*/
throws NoSuchAlgorithmException {
first = true;
}
/**
* Returns the length of the Mac in bytes.
*
* @return the Mac length in bytes.
*/
int getDigestLength() {
return md.getDigestLength();
}
/**
* Initializes the Mac with the given secret key and algorithm parameters.
*
* @param key the secret key.
* @param params the algorithm parameters.
*
* @exception InvalidKeyException if the given key is inappropriate for
* initializing this MAC.
* @exception InvalidAlgorithmParameterException if the given algorithm
* parameters are inappropriate for this MAC.
*/
throw new InvalidAlgorithmParameterException
("SslMac does not use parameters");
}
throw new InvalidKeyException("Secret key expected");
}
throw new InvalidKeyException("Missing key data");
}
reset();
}
/**
* Processes the given byte.
*
* @param input the input byte to be processed.
*/
if (first == true) {
// compute digest for 1st pass; start with inner pad
first = false;
}
// add the passed byte to the inner digest
}
/**
* Processes the first <code>len</code> bytes in <code>input</code>,
* starting at <code>offset</code>.
*
* @param input the input buffer.
* @param offset the offset in <code>input</code> where the input starts.
* @param len the number of bytes to process.
*/
if (first == true) {
// compute digest for 1st pass; start with inner pad
first = false;
}
// add the selected part of an array of bytes to the inner digest
}
if (first == true) {
// compute digest for 1st pass; start with inner pad
first = false;
}
}
/**
* Completes the Mac computation and resets the Mac for further use,
* maintaining the secret key that the Mac was initialized with.
*
* @return the Mac result.
*/
byte[] doFinal() {
if (first == true) {
// compute digest for 1st pass; start with inner pad
} else {
first = true;
}
try {
// finish the inner digest
// compute digest for 2nd pass; start with outer pad
// add result of 1st hash
return tmp;
} catch (DigestException e) {
// should never occur
throw new ProviderException(e);
}
}
/**
* Resets the Mac for further use, maintaining the secret key that the
* Mac was initialized with.
*/
void reset() {
if (first == false) {
first = true;
}
}
// nested static class for the SslMacMD5 implementation
}
protected int engineGetMacLength() {
return core.getDigestLength();
}
}
}
}
}
protected byte[] engineDoFinal() {
}
protected void engineReset() {
}
}
// nested static class for the SslMacMD5 implementation
}
protected int engineGetMacLength() {
return core.getDigestLength();
}
}
}
}
}
protected byte[] engineDoFinal() {
}
protected void engineReset() {
}
}
}