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| 1 | +/* | |
| 2 | + * Copyright (c) 2002, 2006, Oracle and/or its affiliates. All rights reserved. | |
| 3 | + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 | + * | |
| 5 | + * This code is free software; you can redistribute it and/or modify it | |
| 6 | + * under the terms of the GNU General Public License version 2 only, as | |
| 7 | + * published by the Free Software Foundation. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle in the LICENSE file that accompanied this code. | |
| 10 | + * | |
| 11 | + * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 | + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 | + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 | + * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 | + * accompanied this code). | |
| 16 | + * | |
| 17 | + * You should have received a copy of the GNU General Public License version | |
| 18 | + * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 | + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 | + * | |
| 21 | + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | + | |
| 26 | +package sun.security.provider; | |
| 27 | + | |
| 28 | +import java.security.*; | |
| 29 | +import java.math.BigInteger; | |
| 30 | + | |
| 31 | +import static sun.security.provider.ByteArrayAccess.*; | |
| 32 | + | |
| 33 | +/** | |
| 34 | + * This class implements the Secure Hash Algorithm SHA-384 and SHA-512 | |
| 35 | + * developed by the National Institute of Standards and Technology along | |
| 36 | + * with the National Security Agency. | |
| 37 | + * | |
| 38 | + * The two algorithms are almost identical. This file contains a base | |
| 39 | + * class SHA5 and two nested static subclasses as the classes to be used | |
| 40 | + * by the JCA framework. | |
| 41 | + * | |
| 42 | + * <p>It implements java.security.MessageDigestSpi, and can be used | |
| 43 | + * through Java Cryptography Architecture (JCA), as a pluggable | |
| 44 | + * MessageDigest implementation. | |
| 45 | + * | |
| 46 | + * @since 1.4.2 | |
| 47 | + * @author Valerie Peng | |
| 48 | + * @author Andreas Sterbenz | |
| 49 | + */ | |
| 50 | +abstract class SHA5 extends DigestBase { | |
| 51 | + | |
| 52 | + private static final int ITERATION = 80; | |
| 53 | + // Constants for each round/iteration | |
| 54 | + private static final long[] ROUND_CONSTS = { | |
| 55 | + 0x428A2F98D728AE22L, 0x7137449123EF65CDL, 0xB5C0FBCFEC4D3B2FL, | |
| 56 | + 0xE9B5DBA58189DBBCL, 0x3956C25BF348B538L, 0x59F111F1B605D019L, | |
| 57 | + 0x923F82A4AF194F9BL, 0xAB1C5ED5DA6D8118L, 0xD807AA98A3030242L, | |
| 58 | + 0x12835B0145706FBEL, 0x243185BE4EE4B28CL, 0x550C7DC3D5FFB4E2L, | |
| 59 | + 0x72BE5D74F27B896FL, 0x80DEB1FE3B1696B1L, 0x9BDC06A725C71235L, | |
| 60 | + 0xC19BF174CF692694L, 0xE49B69C19EF14AD2L, 0xEFBE4786384F25E3L, | |
| 61 | + 0x0FC19DC68B8CD5B5L, 0x240CA1CC77AC9C65L, 0x2DE92C6F592B0275L, | |
| 62 | + 0x4A7484AA6EA6E483L, 0x5CB0A9DCBD41FBD4L, 0x76F988DA831153B5L, | |
| 63 | + 0x983E5152EE66DFABL, 0xA831C66D2DB43210L, 0xB00327C898FB213FL, | |
| 64 | + 0xBF597FC7BEEF0EE4L, 0xC6E00BF33DA88FC2L, 0xD5A79147930AA725L, | |
| 65 | + 0x06CA6351E003826FL, 0x142929670A0E6E70L, 0x27B70A8546D22FFCL, | |
| 66 | + 0x2E1B21385C26C926L, 0x4D2C6DFC5AC42AEDL, 0x53380D139D95B3DFL, | |
| 67 | + 0x650A73548BAF63DEL, 0x766A0ABB3C77B2A8L, 0x81C2C92E47EDAEE6L, | |
| 68 | + 0x92722C851482353BL, 0xA2BFE8A14CF10364L, 0xA81A664BBC423001L, | |
| 69 | + 0xC24B8B70D0F89791L, 0xC76C51A30654BE30L, 0xD192E819D6EF5218L, | |
| 70 | + 0xD69906245565A910L, 0xF40E35855771202AL, 0x106AA07032BBD1B8L, | |
| 71 | + 0x19A4C116B8D2D0C8L, 0x1E376C085141AB53L, 0x2748774CDF8EEB99L, | |
| 72 | + 0x34B0BCB5E19B48A8L, 0x391C0CB3C5C95A63L, 0x4ED8AA4AE3418ACBL, | |
| 73 | + 0x5B9CCA4F7763E373L, 0x682E6FF3D6B2B8A3L, 0x748F82EE5DEFB2FCL, | |
| 74 | + 0x78A5636F43172F60L, 0x84C87814A1F0AB72L, 0x8CC702081A6439ECL, | |
| 75 | + 0x90BEFFFA23631E28L, 0xA4506CEBDE82BDE9L, 0xBEF9A3F7B2C67915L, | |
| 76 | + 0xC67178F2E372532BL, 0xCA273ECEEA26619CL, 0xD186B8C721C0C207L, | |
| 77 | + 0xEADA7DD6CDE0EB1EL, 0xF57D4F7FEE6ED178L, 0x06F067AA72176FBAL, | |
| 78 | + 0x0A637DC5A2C898A6L, 0x113F9804BEF90DAEL, 0x1B710B35131C471BL, | |
| 79 | + 0x28DB77F523047D84L, 0x32CAAB7B40C72493L, 0x3C9EBE0A15C9BEBCL, | |
| 80 | + 0x431D67C49C100D4CL, 0x4CC5D4BECB3E42B6L, 0x597F299CFC657E2AL, | |
| 81 | + 0x5FCB6FAB3AD6FAECL, 0x6C44198C4A475817L | |
| 82 | + }; | |
| 83 | + | |
| 84 | + // buffer used by implCompress() | |
| 85 | + private final long[] W; | |
| 86 | + | |
| 87 | + // state of this object | |
| 88 | + private final long[] state; | |
| 89 | + | |
| 90 | + // initial state value. different between SHA-384 and SHA-512 | |
| 91 | + private final long[] initialHashes; | |
| 92 | + | |
| 93 | + /** | |
| 94 | + * Creates a new SHA object. | |
| 95 | + */ | |
| 96 | + SHA5(String name, int digestLength, long[] initialHashes) { | |
| 97 | + super(name, digestLength, 128); | |
| 98 | + this.initialHashes = initialHashes; | |
| 99 | + state = new long[8]; | |
| 100 | + W = new long[80]; | |
| 101 | + implReset(); | |
| 102 | + } | |
| 103 | + | |
| 104 | + /** | |
| 105 | + * Creates a SHA object with state (for cloning) | |
| 106 | + */ | |
| 107 | + SHA5(SHA5 base) { | |
| 108 | + super(base); | |
| 109 | + this.initialHashes = base.initialHashes; | |
| 110 | + this.state = base.state.clone(); | |
| 111 | + this.W = new long[80]; | |
| 112 | + } | |
| 113 | + | |
| 114 | + final void implReset() { | |
| 115 | + System.arraycopy(initialHashes, 0, state, 0, state.length); | |
| 116 | + } | |
| 117 | + | |
| 118 | + final void implDigest(byte[] out, int ofs) { | |
| 119 | + long bitsProcessed = bytesProcessed << 3; | |
| 120 | + | |
| 121 | + int index = (int)bytesProcessed & 0x7f; | |
| 122 | + int padLen = (index < 112) ? (112 - index) : (240 - index); | |
| 123 | + engineUpdate(padding, 0, padLen + 8); | |
| 124 | + | |
| 125 | + i2bBig4((int)(bitsProcessed >>> 32), buffer, 120); | |
| 126 | + i2bBig4((int)bitsProcessed, buffer, 124); | |
| 127 | + implCompress(buffer, 0); | |
| 128 | + | |
| 129 | + l2bBig(state, 0, out, ofs, engineGetDigestLength()); | |
| 130 | + } | |
| 131 | + | |
| 132 | + /** | |
| 133 | + * logical function ch(x,y,z) as defined in spec: | |
| 134 | + * @return (x and y) xor ((complement x) and z) | |
| 135 | + * @param x long | |
| 136 | + * @param y long | |
| 137 | + * @param z long | |
| 138 | + */ | |
| 139 | + private static long lf_ch(long x, long y, long z) { | |
| 140 | + return (x & y) ^ ((~x) & z); | |
| 141 | + } | |
| 142 | + | |
| 143 | + /** | |
| 144 | + * logical function maj(x,y,z) as defined in spec: | |
| 145 | + * @return (x and y) xor (x and z) xor (y and z) | |
| 146 | + * @param x long | |
| 147 | + * @param y long | |
| 148 | + * @param z long | |
| 149 | + */ | |
| 150 | + private static long lf_maj(long x, long y, long z) { | |
| 151 | + return (x & y) ^ (x & z) ^ (y & z); | |
| 152 | + } | |
| 153 | + | |
| 154 | + /** | |
| 155 | + * logical function R(x,s) - right shift | |
| 156 | + * @return x right shift for s times | |
| 157 | + * @param x long | |
| 158 | + * @param s int | |
| 159 | + */ | |
| 160 | + private static long lf_R(long x, int s) { | |
| 161 | + return (x >>> s); | |
| 162 | + } | |
| 163 | + | |
| 164 | + /** | |
| 165 | + * logical function S(x,s) - right rotation | |
| 166 | + * @return x circular right shift for s times | |
| 167 | + * @param x long | |
| 168 | + * @param s int | |
| 169 | + */ | |
| 170 | + private static long lf_S(long x, int s) { | |
| 171 | + return (x >>> s) | (x << (64 - s)); | |
| 172 | + } | |
| 173 | + | |
| 174 | + /** | |
| 175 | + * logical function sigma0(x) - xor of results of right rotations | |
| 176 | + * @return S(x,28) xor S(x,34) xor S(x,39) | |
| 177 | + * @param x long | |
| 178 | + */ | |
| 179 | + private static long lf_sigma0(long x) { | |
| 180 | + return lf_S(x, 28) ^ lf_S(x, 34) ^ lf_S(x, 39); | |
| 181 | + } | |
| 182 | + | |
| 183 | + /** | |
| 184 | + * logical function sigma1(x) - xor of results of right rotations | |
| 185 | + * @return S(x,14) xor S(x,18) xor S(x,41) | |
| 186 | + * @param x long | |
| 187 | + */ | |
| 188 | + private static long lf_sigma1(long x) { | |
| 189 | + return lf_S(x, 14) ^ lf_S(x, 18) ^ lf_S(x, 41); | |
| 190 | + } | |
| 191 | + | |
| 192 | + /** | |
| 193 | + * logical function delta0(x) - xor of results of right shifts/rotations | |
| 194 | + * @return long | |
| 195 | + * @param x long | |
| 196 | + */ | |
| 197 | + private static long lf_delta0(long x) { | |
| 198 | + return lf_S(x, 1) ^ lf_S(x, 8) ^ lf_R(x, 7); | |
| 199 | + } | |
| 200 | + | |
| 201 | + /** | |
| 202 | + * logical function delta1(x) - xor of results of right shifts/rotations | |
| 203 | + * @return long | |
| 204 | + * @param x long | |
| 205 | + */ | |
| 206 | + private static long lf_delta1(long x) { | |
| 207 | + return lf_S(x, 19) ^ lf_S(x, 61) ^ lf_R(x, 6); | |
| 208 | + } | |
| 209 | + | |
| 210 | + /** | |
| 211 | + * Compute the hash for the current block. | |
| 212 | + * | |
| 213 | + * This is in the same vein as Peter Gutmann's algorithm listed in | |
| 214 | + * the back of Applied Cryptography, Compact implementation of | |
| 215 | + * "old" NIST Secure Hash Algorithm. | |
| 216 | + */ | |
| 217 | + final void implCompress(byte[] buf, int ofs) { | |
| 218 | + b2lBig128(buf, ofs, W); | |
| 219 | + | |
| 220 | + // The first 16 longs are from the byte stream, compute the rest of | |
| 221 | + // the W[]'s | |
| 222 | + for (int t = 16; t < ITERATION; t++) { | |
| 223 | + W[t] = lf_delta1(W[t-2]) + W[t-7] + lf_delta0(W[t-15]) | |
| 224 | + + W[t-16]; | |
| 225 | + } | |
| 226 | + | |
| 227 | + long a = state[0]; | |
| 228 | + long b = state[1]; | |
| 229 | + long c = state[2]; | |
| 230 | + long d = state[3]; | |
| 231 | + long e = state[4]; | |
| 232 | + long f = state[5]; | |
| 233 | + long g = state[6]; | |
| 234 | + long h = state[7]; | |
| 235 | + | |
| 236 | + for (int i = 0; i < ITERATION; i++) { | |
| 237 | + long T1 = h + lf_sigma1(e) + lf_ch(e,f,g) + ROUND_CONSTS[i] + W[i]; | |
| 238 | + long T2 = lf_sigma0(a) + lf_maj(a,b,c); | |
| 239 | + h = g; | |
| 240 | + g = f; | |
| 241 | + f = e; | |
| 242 | + e = d + T1; | |
| 243 | + d = c; | |
| 244 | + c = b; | |
| 245 | + b = a; | |
| 246 | + a = T1 + T2; | |
| 247 | + } | |
| 248 | + state[0] += a; | |
| 249 | + state[1] += b; | |
| 250 | + state[2] += c; | |
| 251 | + state[3] += d; | |
| 252 | + state[4] += e; | |
| 253 | + state[5] += f; | |
| 254 | + state[6] += g; | |
| 255 | + state[7] += h; | |
| 256 | + } | |
| 257 | + | |
| 258 | + /** | |
| 259 | + * SHA-512 implementation class. | |
| 260 | + */ | |
| 261 | + public static final class SHA512 extends SHA5 { | |
| 262 | + | |
| 263 | + private static final long[] INITIAL_HASHES = { | |
| 264 | + 0x6a09e667f3bcc908L, 0xbb67ae8584caa73bL, | |
| 265 | + 0x3c6ef372fe94f82bL, 0xa54ff53a5f1d36f1L, | |
| 266 | + 0x510e527fade682d1L, 0x9b05688c2b3e6c1fL, | |
| 267 | + 0x1f83d9abfb41bd6bL, 0x5be0cd19137e2179L | |
| 268 | + }; | |
| 269 | + | |
| 270 | + public SHA512() { | |
| 271 | + super("SHA-512", 64, INITIAL_HASHES); | |
| 272 | + } | |
| 273 | + | |
| 274 | + private SHA512(SHA512 base) { | |
| 275 | + super(base); | |
| 276 | + } | |
| 277 | + | |
| 278 | + public Object clone() { | |
| 279 | + return new SHA512(this); | |
| 280 | + } | |
| 281 | + } | |
| 282 | + | |
| 283 | + /** | |
| 284 | + * SHA-384 implementation class. | |
| 285 | + */ | |
| 286 | + public static final class SHA384 extends SHA5 { | |
| 287 | + | |
| 288 | + private static final long[] INITIAL_HASHES = { | |
| 289 | + 0xcbbb9d5dc1059ed8L, 0x629a292a367cd507L, | |
| 290 | + 0x9159015a3070dd17L, 0x152fecd8f70e5939L, | |
| 291 | + 0x67332667ffc00b31L, 0x8eb44a8768581511L, | |
| 292 | + 0xdb0c2e0d64f98fa7L, 0x47b5481dbefa4fa4L | |
| 293 | + }; | |
| 294 | + | |
| 295 | + public SHA384() { | |
| 296 | + super("SHA-384", 48, INITIAL_HASHES); | |
| 297 | + } | |
| 298 | + | |
| 299 | + private SHA384(SHA384 base) { | |
| 300 | + super(base); | |
| 301 | + } | |
| 302 | + | |
| 303 | + public Object clone() { | |
| 304 | + return new SHA384(this); | |
| 305 | + } | |
| 306 | + } | |
| 307 | + | |
| 308 | +} | |