| /* |
| * Copyright (c) 2002, 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * 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. |
| */ |
| |
| package sun.security.provider; |
| |
| import java.util.Objects; |
| |
| import jdk.internal.HotSpotIntrinsicCandidate; |
| import static sun.security.provider.ByteArrayAccess.*; |
| |
| /** |
| * This class implements the Secure Hash Algorithm SHA-384 and SHA-512 |
| * developed by the National Institute of Standards and Technology along |
| * with the National Security Agency. |
| * |
| * The two algorithms are almost identical. This file contains a base |
| * class SHA5 and two nested static subclasses as the classes to be used |
| * by the JCA framework. |
| * |
| * <p>It implements java.security.MessageDigestSpi, and can be used |
| * through Java Cryptography Architecture (JCA), as a pluggable |
| * MessageDigest implementation. |
| * |
| * @since 1.4.2 |
| * @author Valerie Peng |
| * @author Andreas Sterbenz |
| */ |
| abstract class SHA5 extends DigestBase { |
| |
| private static final int ITERATION = 80; |
| // Constants for each round/iteration |
| private static final long[] ROUND_CONSTS = { |
| 0x428A2F98D728AE22L, 0x7137449123EF65CDL, 0xB5C0FBCFEC4D3B2FL, |
| 0xE9B5DBA58189DBBCL, 0x3956C25BF348B538L, 0x59F111F1B605D019L, |
| 0x923F82A4AF194F9BL, 0xAB1C5ED5DA6D8118L, 0xD807AA98A3030242L, |
| 0x12835B0145706FBEL, 0x243185BE4EE4B28CL, 0x550C7DC3D5FFB4E2L, |
| 0x72BE5D74F27B896FL, 0x80DEB1FE3B1696B1L, 0x9BDC06A725C71235L, |
| 0xC19BF174CF692694L, 0xE49B69C19EF14AD2L, 0xEFBE4786384F25E3L, |
| 0x0FC19DC68B8CD5B5L, 0x240CA1CC77AC9C65L, 0x2DE92C6F592B0275L, |
| 0x4A7484AA6EA6E483L, 0x5CB0A9DCBD41FBD4L, 0x76F988DA831153B5L, |
| 0x983E5152EE66DFABL, 0xA831C66D2DB43210L, 0xB00327C898FB213FL, |
| 0xBF597FC7BEEF0EE4L, 0xC6E00BF33DA88FC2L, 0xD5A79147930AA725L, |
| 0x06CA6351E003826FL, 0x142929670A0E6E70L, 0x27B70A8546D22FFCL, |
| 0x2E1B21385C26C926L, 0x4D2C6DFC5AC42AEDL, 0x53380D139D95B3DFL, |
| 0x650A73548BAF63DEL, 0x766A0ABB3C77B2A8L, 0x81C2C92E47EDAEE6L, |
| 0x92722C851482353BL, 0xA2BFE8A14CF10364L, 0xA81A664BBC423001L, |
| 0xC24B8B70D0F89791L, 0xC76C51A30654BE30L, 0xD192E819D6EF5218L, |
| 0xD69906245565A910L, 0xF40E35855771202AL, 0x106AA07032BBD1B8L, |
| 0x19A4C116B8D2D0C8L, 0x1E376C085141AB53L, 0x2748774CDF8EEB99L, |
| 0x34B0BCB5E19B48A8L, 0x391C0CB3C5C95A63L, 0x4ED8AA4AE3418ACBL, |
| 0x5B9CCA4F7763E373L, 0x682E6FF3D6B2B8A3L, 0x748F82EE5DEFB2FCL, |
| 0x78A5636F43172F60L, 0x84C87814A1F0AB72L, 0x8CC702081A6439ECL, |
| 0x90BEFFFA23631E28L, 0xA4506CEBDE82BDE9L, 0xBEF9A3F7B2C67915L, |
| 0xC67178F2E372532BL, 0xCA273ECEEA26619CL, 0xD186B8C721C0C207L, |
| 0xEADA7DD6CDE0EB1EL, 0xF57D4F7FEE6ED178L, 0x06F067AA72176FBAL, |
| 0x0A637DC5A2C898A6L, 0x113F9804BEF90DAEL, 0x1B710B35131C471BL, |
| 0x28DB77F523047D84L, 0x32CAAB7B40C72493L, 0x3C9EBE0A15C9BEBCL, |
| 0x431D67C49C100D4CL, 0x4CC5D4BECB3E42B6L, 0x597F299CFC657E2AL, |
| 0x5FCB6FAB3AD6FAECL, 0x6C44198C4A475817L |
| }; |
| |
| // buffer used by implCompress() |
| private long[] W; |
| |
| // state of this object |
| private long[] state; |
| |
| // initial state value. different between SHA-384 and SHA-512 |
| private final long[] initialHashes; |
| |
| /** |
| * Creates a new SHA object. |
| */ |
| SHA5(String name, int digestLength, long[] initialHashes) { |
| super(name, digestLength, 128); |
| this.initialHashes = initialHashes; |
| state = new long[8]; |
| W = new long[80]; |
| implReset(); |
| } |
| |
| final void implReset() { |
| System.arraycopy(initialHashes, 0, state, 0, state.length); |
| } |
| |
| final void implDigest(byte[] out, int ofs) { |
| long bitsProcessed = bytesProcessed << 3; |
| |
| int index = (int)bytesProcessed & 0x7f; |
| int padLen = (index < 112) ? (112 - index) : (240 - index); |
| engineUpdate(padding, 0, padLen + 8); |
| |
| i2bBig4((int)(bitsProcessed >>> 32), buffer, 120); |
| i2bBig4((int)bitsProcessed, buffer, 124); |
| implCompress(buffer, 0); |
| |
| int len = engineGetDigestLength(); |
| if (len == 28) { |
| // Special case for SHA-512/224 |
| l2bBig(state, 0, out, ofs, 24); |
| i2bBig4((int)(state[3] >> 32), out, ofs + 24); |
| } else { |
| l2bBig(state, 0, out, ofs, len); |
| } |
| } |
| |
| /** |
| * logical function ch(x,y,z) as defined in spec: |
| * @return (x and y) xor ((complement x) and z) |
| * @param x long |
| * @param y long |
| * @param z long |
| */ |
| private static long lf_ch(long x, long y, long z) { |
| return (x & y) ^ ((~x) & z); |
| } |
| |
| /** |
| * logical function maj(x,y,z) as defined in spec: |
| * @return (x and y) xor (x and z) xor (y and z) |
| * @param x long |
| * @param y long |
| * @param z long |
| */ |
| private static long lf_maj(long x, long y, long z) { |
| return (x & y) ^ (x & z) ^ (y & z); |
| } |
| |
| /** |
| * logical function R(x,s) - right shift |
| * @return x right shift for s times |
| * @param x long |
| * @param s int |
| */ |
| private static long lf_R(long x, int s) { |
| return (x >>> s); |
| } |
| |
| /** |
| * logical function S(x,s) - right rotation |
| * @return x circular right shift for s times |
| * @param x long |
| * @param s int |
| */ |
| private static long lf_S(long x, int s) { |
| return (x >>> s) | (x << (64 - s)); |
| } |
| |
| /** |
| * logical function sigma0(x) - xor of results of right rotations |
| * @return S(x,28) xor S(x,34) xor S(x,39) |
| * @param x long |
| */ |
| private static long lf_sigma0(long x) { |
| return lf_S(x, 28) ^ lf_S(x, 34) ^ lf_S(x, 39); |
| } |
| |
| /** |
| * logical function sigma1(x) - xor of results of right rotations |
| * @return S(x,14) xor S(x,18) xor S(x,41) |
| * @param x long |
| */ |
| private static long lf_sigma1(long x) { |
| return lf_S(x, 14) ^ lf_S(x, 18) ^ lf_S(x, 41); |
| } |
| |
| /** |
| * logical function delta0(x) - xor of results of right shifts/rotations |
| * @return long |
| * @param x long |
| */ |
| private static long lf_delta0(long x) { |
| return lf_S(x, 1) ^ lf_S(x, 8) ^ lf_R(x, 7); |
| } |
| |
| /** |
| * logical function delta1(x) - xor of results of right shifts/rotations |
| * @return long |
| * @param x long |
| */ |
| private static long lf_delta1(long x) { |
| return lf_S(x, 19) ^ lf_S(x, 61) ^ lf_R(x, 6); |
| } |
| |
| /** |
| * Compute the hash for the current block. |
| * |
| * This is in the same vein as Peter Gutmann's algorithm listed in |
| * the back of Applied Cryptography, Compact implementation of |
| * "old" NIST Secure Hash Algorithm. |
| */ |
| final void implCompress(byte[] buf, int ofs) { |
| implCompressCheck(buf, ofs); |
| implCompress0(buf, ofs); |
| } |
| |
| private void implCompressCheck(byte[] buf, int ofs) { |
| Objects.requireNonNull(buf); |
| |
| // The checks performed by the method 'b2iBig128' |
| // are sufficient for the case when the method |
| // 'implCompressImpl' is replaced with a compiler |
| // intrinsic. |
| b2lBig128(buf, ofs, W); |
| } |
| |
| // The method 'implCompressImpl' seems not to use its parameters. |
| // The method can, however, be replaced with a compiler intrinsic |
| // that operates directly on the array 'buf' (starting from |
| // offset 'ofs') and not on array 'W', therefore 'buf' and 'ofs' |
| // must be passed as parameter to the method. |
| @HotSpotIntrinsicCandidate |
| private final void implCompress0(byte[] buf, int ofs) { |
| // The first 16 longs are from the byte stream, compute the rest of |
| // the W[]'s |
| for (int t = 16; t < ITERATION; t++) { |
| W[t] = lf_delta1(W[t-2]) + W[t-7] + lf_delta0(W[t-15]) |
| + W[t-16]; |
| } |
| |
| long a = state[0]; |
| long b = state[1]; |
| long c = state[2]; |
| long d = state[3]; |
| long e = state[4]; |
| long f = state[5]; |
| long g = state[6]; |
| long h = state[7]; |
| |
| for (int i = 0; i < ITERATION; i++) { |
| long T1 = h + lf_sigma1(e) + lf_ch(e,f,g) + ROUND_CONSTS[i] + W[i]; |
| long T2 = lf_sigma0(a) + lf_maj(a,b,c); |
| h = g; |
| g = f; |
| f = e; |
| e = d + T1; |
| d = c; |
| c = b; |
| b = a; |
| a = T1 + T2; |
| } |
| state[0] += a; |
| state[1] += b; |
| state[2] += c; |
| state[3] += d; |
| state[4] += e; |
| state[5] += f; |
| state[6] += g; |
| state[7] += h; |
| } |
| |
| public Object clone() throws CloneNotSupportedException { |
| SHA5 copy = (SHA5) super.clone(); |
| copy.state = copy.state.clone(); |
| copy.W = new long[80]; |
| return copy; |
| } |
| |
| /** |
| * SHA-512 implementation class. |
| */ |
| public static final class SHA512 extends SHA5 { |
| |
| private static final long[] INITIAL_HASHES = { |
| 0x6a09e667f3bcc908L, 0xbb67ae8584caa73bL, |
| 0x3c6ef372fe94f82bL, 0xa54ff53a5f1d36f1L, |
| 0x510e527fade682d1L, 0x9b05688c2b3e6c1fL, |
| 0x1f83d9abfb41bd6bL, 0x5be0cd19137e2179L |
| }; |
| |
| public SHA512() { |
| super("SHA-512", 64, INITIAL_HASHES); |
| } |
| } |
| |
| /** |
| * SHA-384 implementation class. |
| */ |
| public static final class SHA384 extends SHA5 { |
| |
| private static final long[] INITIAL_HASHES = { |
| 0xcbbb9d5dc1059ed8L, 0x629a292a367cd507L, |
| 0x9159015a3070dd17L, 0x152fecd8f70e5939L, |
| 0x67332667ffc00b31L, 0x8eb44a8768581511L, |
| 0xdb0c2e0d64f98fa7L, 0x47b5481dbefa4fa4L |
| }; |
| |
| public SHA384() { |
| super("SHA-384", 48, INITIAL_HASHES); |
| } |
| } |
| public static final class SHA512_224 extends SHA5 { |
| |
| private static final long[] INITIAL_HASHES = { |
| 0x8C3D37C819544DA2L, 0x73E1996689DCD4D6L, |
| 0x1DFAB7AE32FF9C82L, 0x679DD514582F9FCFL, |
| 0x0F6D2B697BD44DA8L, 0x77E36F7304C48942L, |
| 0x3F9D85A86A1D36C8L, 0x1112E6AD91D692A1L |
| }; |
| |
| public SHA512_224() { |
| super("SHA-512/224", 28, INITIAL_HASHES); |
| } |
| } |
| |
| public static final class SHA512_256 extends SHA5 { |
| |
| private static final long[] INITIAL_HASHES = { |
| 0x22312194FC2BF72CL, 0x9F555FA3C84C64C2L, |
| 0x2393B86B6F53B151L, 0x963877195940EABDL, |
| 0x96283EE2A88EFFE3L, 0xBE5E1E2553863992L, |
| 0x2B0199FC2C85B8AAL, 0x0EB72DDC81C52CA2L |
| }; |
| |
| public SHA512_256() { |
| super("SHA-512/256", 32, INITIAL_HASHES); |
| } |
| } |
| } |