/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @author Yuri A. Kropachev
* @version $Revision$
*/
package org.apache.harmony.security.provider.crypto;
/**
* This interface contains : <BR>
* - a set of constant values, H0-H4, defined in "SECURE HASH STANDARD", FIPS PUB 180-2 ;<BR>
* - implementation constant values to use in classes using SHA-1 algorithm. <BR>
*/
public final class SHA1Constants {
private SHA1Constants() {
}
/**
* constant defined in "SECURE HASH STANDARD"
*/
public static final int H0 = 0x67452301;
/**
* constant defined in "SECURE HASH STANDARD"
*/
public static final int H1 = 0xEFCDAB89;
/**
* constant defined in "SECURE HASH STANDARD"
*/
public static final int H2 = 0x98BADCFE;
/**
* constant defined in "SECURE HASH STANDARD"
*/
public static final int H3 = 0x10325476;
/**
* constant defined in "SECURE HASH STANDARD"
*/
public static final int H4 = 0xC3D2E1F0;
/**
* offset in buffer to store number of bytes in 0-15 word frame
*/
public static final int BYTES_OFFSET = 81;
/**
* offset in buffer to store current hash value
*/
public static final int HASH_OFFSET = 82;
/**
* # of bytes in H0-H4 words; <BR>
* in this implementation # is set to 20 (in general # varies from 1 to 20)
*/
public static final int DIGEST_LENGTH = 20;
}