1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 /** 18 * @author Yuri A. Kropachev 19 * @version $Revision$ 20 */ 21 22 23 package org.apache.harmony.security.provider.crypto; 24 25 26 /** 27 * This interface contains : <BR> 28 * - a set of constant values, H0-H4, defined in "SECURE HASH STANDARD", FIPS PUB 180-2 ;<BR> 29 * - implementation constant values to use in classes using SHA-1 algorithm. <BR> 30 */ 31 32 33 public interface SHA1_Data { 34 35 36 /** 37 * constant defined in "SECURE HASH STANDARD" 38 */ 39 static final int H0 = 0x67452301; 40 41 42 /** 43 * constant defined in "SECURE HASH STANDARD" 44 */ 45 static final int H1 = 0xEFCDAB89; 46 47 48 /** 49 * constant defined in "SECURE HASH STANDARD" 50 */ 51 static final int H2 = 0x98BADCFE; 52 53 54 /** 55 * constant defined in "SECURE HASH STANDARD" 56 */ 57 static final int H3 = 0x10325476; 58 59 60 /** 61 * constant defined in "SECURE HASH STANDARD" 62 */ 63 static final int H4 = 0xC3D2E1F0; 64 65 66 /** 67 * offset in buffer to store number of bytes in 0-15 word frame 68 */ 69 static final int BYTES_OFFSET = 81; 70 71 72 /** 73 * offset in buffer to store current hash value 74 */ 75 static final int HASH_OFFSET = 82; 76 77 78 /** 79 * # of bytes in H0-H4 words; <BR> 80 * in this implementation # is set to 20 (in general # varies from 1 to 20) 81 */ 82 static final int DIGEST_LENGTH = 20; 83 } 84
