From 1bcd037810cf1c3405d80ab5b9f47efd947f551e Mon Sep 17 00:00:00 2001 From: Sebastian Huber Date: Thu, 13 Nov 2014 13:18:24 +0100 Subject: Add SHA256 and SHA512 support --- cpukit/libmd/Makefile.am | 13 +- cpukit/libmd/preinstall.am | 30 +++++ cpukit/libmd/sha256.h | 50 +++++++ cpukit/libmd/sha256c.c | 297 +++++++++++++++++++++++++++++++++++++++++ cpukit/libmd/sha512.h | 50 +++++++ cpukit/libmd/sha512c.c | 320 +++++++++++++++++++++++++++++++++++++++++++++ 6 files changed, 758 insertions(+), 2 deletions(-) create mode 100644 cpukit/libmd/sha256.h create mode 100644 cpukit/libmd/sha256c.c create mode 100644 cpukit/libmd/sha512.h create mode 100644 cpukit/libmd/sha512c.c (limited to 'cpukit/libmd') diff --git a/cpukit/libmd/Makefile.am b/cpukit/libmd/Makefile.am index f1eb021303..95b12da1f1 100644 --- a/cpukit/libmd/Makefile.am +++ b/cpukit/libmd/Makefile.am @@ -1,9 +1,18 @@ include $(top_srcdir)/automake/compile.am if NEWLIB +include_HEADERS = +include_HEADERS += md4.h +include_HEADERS += md5.h +include_HEADERS += sha256.h +include_HEADERS += sha512.h + noinst_LIBRARIES = libmd.a -libmd_a_SOURCES = md5.h md5.c -libmd_a_SOURCES += md4.h md4.c +libmd_a_SOURCES = +libmd_a_SOURCES += md4.c +libmd_a_SOURCES += md5.c +libmd_a_SOURCES += sha256c.c +libmd_a_SOURCES += sha512c.c libmd_a_CPPFLAGS = $(AM_CPPFLAGS) endif diff --git a/cpukit/libmd/preinstall.am b/cpukit/libmd/preinstall.am index dba6cc4d81..9edfb3d75f 100644 --- a/cpukit/libmd/preinstall.am +++ b/cpukit/libmd/preinstall.am @@ -5,3 +5,33 @@ $(srcdir)/preinstall.am: Makefile.am $(AMPOLISH3) $(srcdir)/Makefile.am > $(srcdir)/preinstall.am endif +PREINSTALL_DIRS = +DISTCLEANFILES = $(PREINSTALL_DIRS) + +all-am: $(PREINSTALL_FILES) + +PREINSTALL_FILES = +CLEANFILES = $(PREINSTALL_FILES) + +$(PROJECT_INCLUDE)/$(dirstamp): + @$(MKDIR_P) $(PROJECT_INCLUDE) + @: > $(PROJECT_INCLUDE)/$(dirstamp) +PREINSTALL_DIRS += $(PROJECT_INCLUDE)/$(dirstamp) + +if NEWLIB +$(PROJECT_INCLUDE)/md4.h: md4.h $(PROJECT_INCLUDE)/$(dirstamp) + $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/md4.h +PREINSTALL_FILES += $(PROJECT_INCLUDE)/md4.h + +$(PROJECT_INCLUDE)/md5.h: md5.h $(PROJECT_INCLUDE)/$(dirstamp) + $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/md5.h +PREINSTALL_FILES += $(PROJECT_INCLUDE)/md5.h + +$(PROJECT_INCLUDE)/sha256.h: sha256.h $(PROJECT_INCLUDE)/$(dirstamp) + $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/sha256.h +PREINSTALL_FILES += $(PROJECT_INCLUDE)/sha256.h + +$(PROJECT_INCLUDE)/sha512.h: sha512.h $(PROJECT_INCLUDE)/$(dirstamp) + $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/sha512.h +PREINSTALL_FILES += $(PROJECT_INCLUDE)/sha512.h +endif diff --git a/cpukit/libmd/sha256.h b/cpukit/libmd/sha256.h new file mode 100644 index 0000000000..1b6a4f4c57 --- /dev/null +++ b/cpukit/libmd/sha256.h @@ -0,0 +1,50 @@ +/*- + * Copyright 2005 Colin Percival + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#ifndef _SHA256_H_ +#define _SHA256_H_ + +#include + +typedef struct SHA256Context { + uint32_t state[8]; + uint64_t count; + unsigned char buf[64]; +} SHA256_CTX; + +__BEGIN_DECLS +void SHA256_Init(SHA256_CTX *); +void SHA256_Update(SHA256_CTX *, const void *, size_t); +void SHA256_Final(unsigned char [32], SHA256_CTX *); +char *SHA256_End(SHA256_CTX *, char *); +char *SHA256_File(const char *, char *); +char *SHA256_FileChunk(const char *, char *, off_t, off_t); +char *SHA256_Data(const void *, unsigned int, char *); +__END_DECLS + +#endif /* !_SHA256_H_ */ diff --git a/cpukit/libmd/sha256c.c b/cpukit/libmd/sha256c.c new file mode 100644 index 0000000000..4c0371dda7 --- /dev/null +++ b/cpukit/libmd/sha256c.c @@ -0,0 +1,297 @@ +/*- + * Copyright 2005 Colin Percival + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +__FBSDID("$FreeBSD$"); + +#include +#include + +#include + +#include "sha256.h" + +#if BYTE_ORDER == BIG_ENDIAN + +/* Copy a vector of big-endian uint32_t into a vector of bytes */ +#define be32enc_vect(dst, src, len) \ + memcpy((void *)dst, (const void *)src, (size_t)len) + +/* Copy a vector of bytes into a vector of big-endian uint32_t */ +#define be32dec_vect(dst, src, len) \ + memcpy((void *)dst, (const void *)src, (size_t)len) + +#else /* BYTE_ORDER != BIG_ENDIAN */ + +/* + * Encode a length len/4 vector of (uint32_t) into a length len vector of + * (unsigned char) in big-endian form. Assumes len is a multiple of 4. + */ +static void +be32enc_vect(unsigned char *dst, const uint32_t *src, size_t len) +{ + size_t i; + + for (i = 0; i < len / 4; i++) + be32enc(dst + i * 4, src[i]); +} + +/* + * Decode a big-endian length len vector of (unsigned char) into a length + * len/4 vector of (uint32_t). Assumes len is a multiple of 4. + */ +static void +be32dec_vect(uint32_t *dst, const unsigned char *src, size_t len) +{ + size_t i; + + for (i = 0; i < len / 4; i++) + dst[i] = be32dec(src + i * 4); +} + +#endif /* BYTE_ORDER != BIG_ENDIAN */ + +/* Elementary functions used by SHA256 */ +#define Ch(x, y, z) ((x & (y ^ z)) ^ z) +#define Maj(x, y, z) ((x & (y | z)) | (y & z)) +#define SHR(x, n) (x >> n) +#define ROTR(x, n) ((x >> n) | (x << (32 - n))) +#define S0(x) (ROTR(x, 2) ^ ROTR(x, 13) ^ ROTR(x, 22)) +#define S1(x) (ROTR(x, 6) ^ ROTR(x, 11) ^ ROTR(x, 25)) +#define s0(x) (ROTR(x, 7) ^ ROTR(x, 18) ^ SHR(x, 3)) +#define s1(x) (ROTR(x, 17) ^ ROTR(x, 19) ^ SHR(x, 10)) + +/* SHA256 round function */ +#define RND(a, b, c, d, e, f, g, h, k) \ + t0 = h + S1(e) + Ch(e, f, g) + k; \ + t1 = S0(a) + Maj(a, b, c); \ + d += t0; \ + h = t0 + t1; + +/* Adjusted round function for rotating state */ +#define RNDr(S, W, i, k) \ + RND(S[(64 - i) % 8], S[(65 - i) % 8], \ + S[(66 - i) % 8], S[(67 - i) % 8], \ + S[(68 - i) % 8], S[(69 - i) % 8], \ + S[(70 - i) % 8], S[(71 - i) % 8], \ + W[i] + k) + +/* + * SHA256 block compression function. The 256-bit state is transformed via + * the 512-bit input block to produce a new state. + */ +static void +SHA256_Transform(uint32_t * state, const unsigned char block[64]) +{ + uint32_t W[64]; + uint32_t S[8]; + uint32_t t0, t1; + int i; + + /* 1. Prepare message schedule W. */ + be32dec_vect(W, block, 64); + for (i = 16; i < 64; i++) + W[i] = s1(W[i - 2]) + W[i - 7] + s0(W[i - 15]) + W[i - 16]; + + /* 2. Initialize working variables. */ + memcpy(S, state, 32); + + /* 3. Mix. */ + RNDr(S, W, 0, 0x428a2f98); + RNDr(S, W, 1, 0x71374491); + RNDr(S, W, 2, 0xb5c0fbcf); + RNDr(S, W, 3, 0xe9b5dba5); + RNDr(S, W, 4, 0x3956c25b); + RNDr(S, W, 5, 0x59f111f1); + RNDr(S, W, 6, 0x923f82a4); + RNDr(S, W, 7, 0xab1c5ed5); + RNDr(S, W, 8, 0xd807aa98); + RNDr(S, W, 9, 0x12835b01); + RNDr(S, W, 10, 0x243185be); + RNDr(S, W, 11, 0x550c7dc3); + RNDr(S, W, 12, 0x72be5d74); + RNDr(S, W, 13, 0x80deb1fe); + RNDr(S, W, 14, 0x9bdc06a7); + RNDr(S, W, 15, 0xc19bf174); + RNDr(S, W, 16, 0xe49b69c1); + RNDr(S, W, 17, 0xefbe4786); + RNDr(S, W, 18, 0x0fc19dc6); + RNDr(S, W, 19, 0x240ca1cc); + RNDr(S, W, 20, 0x2de92c6f); + RNDr(S, W, 21, 0x4a7484aa); + RNDr(S, W, 22, 0x5cb0a9dc); + RNDr(S, W, 23, 0x76f988da); + RNDr(S, W, 24, 0x983e5152); + RNDr(S, W, 25, 0xa831c66d); + RNDr(S, W, 26, 0xb00327c8); + RNDr(S, W, 27, 0xbf597fc7); + RNDr(S, W, 28, 0xc6e00bf3); + RNDr(S, W, 29, 0xd5a79147); + RNDr(S, W, 30, 0x06ca6351); + RNDr(S, W, 31, 0x14292967); + RNDr(S, W, 32, 0x27b70a85); + RNDr(S, W, 33, 0x2e1b2138); + RNDr(S, W, 34, 0x4d2c6dfc); + RNDr(S, W, 35, 0x53380d13); + RNDr(S, W, 36, 0x650a7354); + RNDr(S, W, 37, 0x766a0abb); + RNDr(S, W, 38, 0x81c2c92e); + RNDr(S, W, 39, 0x92722c85); + RNDr(S, W, 40, 0xa2bfe8a1); + RNDr(S, W, 41, 0xa81a664b); + RNDr(S, W, 42, 0xc24b8b70); + RNDr(S, W, 43, 0xc76c51a3); + RNDr(S, W, 44, 0xd192e819); + RNDr(S, W, 45, 0xd6990624); + RNDr(S, W, 46, 0xf40e3585); + RNDr(S, W, 47, 0x106aa070); + RNDr(S, W, 48, 0x19a4c116); + RNDr(S, W, 49, 0x1e376c08); + RNDr(S, W, 50, 0x2748774c); + RNDr(S, W, 51, 0x34b0bcb5); + RNDr(S, W, 52, 0x391c0cb3); + RNDr(S, W, 53, 0x4ed8aa4a); + RNDr(S, W, 54, 0x5b9cca4f); + RNDr(S, W, 55, 0x682e6ff3); + RNDr(S, W, 56, 0x748f82ee); + RNDr(S, W, 57, 0x78a5636f); + RNDr(S, W, 58, 0x84c87814); + RNDr(S, W, 59, 0x8cc70208); + RNDr(S, W, 60, 0x90befffa); + RNDr(S, W, 61, 0xa4506ceb); + RNDr(S, W, 62, 0xbef9a3f7); + RNDr(S, W, 63, 0xc67178f2); + + /* 4. Mix local working variables into global state */ + for (i = 0; i < 8; i++) + state[i] += S[i]; +} + +static const unsigned char PAD[64] = { + 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 +}; + +/* Add padding and terminating bit-count. */ +static void +SHA256_Pad(SHA256_CTX * ctx) +{ + unsigned char len[8]; + uint32_t r, plen; + + /* + * Convert length to a vector of bytes -- we do this now rather + * than later because the length will change after we pad. + */ + be64enc(len, ctx->count); + + /* Add 1--64 bytes so that the resulting length is 56 mod 64 */ + r = (ctx->count >> 3) & 0x3f; + plen = (r < 56) ? (56 - r) : (120 - r); + SHA256_Update(ctx, PAD, (size_t)plen); + + /* Add the terminating bit-count */ + SHA256_Update(ctx, len, 8); +} + +/* SHA-256 initialization. Begins a SHA-256 operation. */ +void +SHA256_Init(SHA256_CTX * ctx) +{ + + /* Zero bits processed so far */ + ctx->count = 0; + + /* Magic initialization constants */ + ctx->state[0] = 0x6A09E667; + ctx->state[1] = 0xBB67AE85; + ctx->state[2] = 0x3C6EF372; + ctx->state[3] = 0xA54FF53A; + ctx->state[4] = 0x510E527F; + ctx->state[5] = 0x9B05688C; + ctx->state[6] = 0x1F83D9AB; + ctx->state[7] = 0x5BE0CD19; +} + +/* Add bytes into the hash */ +void +SHA256_Update(SHA256_CTX * ctx, const void *in, size_t len) +{ + uint64_t bitlen; + uint32_t r; + const unsigned char *src = in; + + /* Number of bytes left in the buffer from previous updates */ + r = (ctx->count >> 3) & 0x3f; + + /* Convert the length into a number of bits */ + bitlen = len << 3; + + /* Update number of bits */ + ctx->count += bitlen; + + /* Handle the case where we don't need to perform any transforms */ + if (len < 64 - r) { + memcpy(&ctx->buf[r], src, len); + return; + } + + /* Finish the current block */ + memcpy(&ctx->buf[r], src, 64 - r); + SHA256_Transform(ctx->state, ctx->buf); + src += 64 - r; + len -= 64 - r; + + /* Perform complete blocks */ + while (len >= 64) { + SHA256_Transform(ctx->state, src); + src += 64; + len -= 64; + } + + /* Copy left over data into buffer */ + memcpy(ctx->buf, src, len); +} + +/* + * SHA-256 finalization. Pads the input data, exports the hash value, + * and clears the context state. + */ +void +SHA256_Final(unsigned char digest[32], SHA256_CTX * ctx) +{ + + /* Add padding */ + SHA256_Pad(ctx); + + /* Write the hash */ + be32enc_vect(digest, ctx->state, 32); + + /* Clear the context state */ + memset((void *)ctx, 0, sizeof(*ctx)); +} diff --git a/cpukit/libmd/sha512.h b/cpukit/libmd/sha512.h new file mode 100644 index 0000000000..8998f4c5bf --- /dev/null +++ b/cpukit/libmd/sha512.h @@ -0,0 +1,50 @@ +/*- + * Copyright 2005 Colin Percival + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#ifndef _SHA512_H_ +#define _SHA512_H_ + +#include + +typedef struct SHA512Context { + uint64_t state[8]; + uint64_t count[2]; + unsigned char buf[128]; +} SHA512_CTX; + +__BEGIN_DECLS +void SHA512_Init(SHA512_CTX *); +void SHA512_Update(SHA512_CTX *, const void *, size_t); +void SHA512_Final(unsigned char [64], SHA512_CTX *); +char *SHA512_End(SHA512_CTX *, char *); +char *SHA512_File(const char *, char *); +char *SHA512_FileChunk(const char *, char *, off_t, off_t); +char *SHA512_Data(const void *, unsigned int, char *); +__END_DECLS + +#endif /* !_SHA512_H_ */ diff --git a/cpukit/libmd/sha512c.c b/cpukit/libmd/sha512c.c new file mode 100644 index 0000000000..a4f268045a --- /dev/null +++ b/cpukit/libmd/sha512c.c @@ -0,0 +1,320 @@ +/*- + * Copyright 2005 Colin Percival + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +__FBSDID("$FreeBSD$"); + +#include +#include + +#include + +#include "sha512.h" + +#if BYTE_ORDER == BIG_ENDIAN + +/* Copy a vector of big-endian uint64_t into a vector of bytes */ +#define be64enc_vect(dst, src, len) \ + memcpy((void *)dst, (const void *)src, (size_t)len) + +/* Copy a vector of bytes into a vector of big-endian uint64_t */ +#define be64dec_vect(dst, src, len) \ + memcpy((void *)dst, (const void *)src, (size_t)len) + +#else /* BYTE_ORDER != BIG_ENDIAN */ + +/* + * Encode a length len/4 vector of (uint64_t) into a length len vector of + * (unsigned char) in big-endian form. Assumes len is a multiple of 8. + */ +static void +be64enc_vect(unsigned char *dst, const uint64_t *src, size_t len) +{ + size_t i; + + for (i = 0; i < len / 8; i++) + be64enc(dst + i * 8, src[i]); +} + +/* + * Decode a big-endian length len vector of (unsigned char) into a length + * len/4 vector of (uint64_t). Assumes len is a multiple of 8. + */ +static void +be64dec_vect(uint64_t *dst, const unsigned char *src, size_t len) +{ + size_t i; + + for (i = 0; i < len / 8; i++) + dst[i] = be64dec(src + i * 8); +} + +#endif /* BYTE_ORDER != BIG_ENDIAN */ + +/* Elementary functions used by SHA512 */ +#define Ch(x, y, z) ((x & (y ^ z)) ^ z) +#define Maj(x, y, z) ((x & (y | z)) | (y & z)) +#define SHR(x, n) (x >> n) +#define ROTR(x, n) ((x >> n) | (x << (64 - n))) +#define S0(x) (ROTR(x, 28) ^ ROTR(x, 34) ^ ROTR(x, 39)) +#define S1(x) (ROTR(x, 14) ^ ROTR(x, 18) ^ ROTR(x, 41)) +#define s0(x) (ROTR(x, 1) ^ ROTR(x, 8) ^ SHR(x, 7)) +#define s1(x) (ROTR(x, 19) ^ ROTR(x, 61) ^ SHR(x, 6)) + +/* SHA512 round function */ +#define RND(a, b, c, d, e, f, g, h, k) \ + t0 = h + S1(e) + Ch(e, f, g) + k; \ + t1 = S0(a) + Maj(a, b, c); \ + d += t0; \ + h = t0 + t1; + +/* Adjusted round function for rotating state */ +#define RNDr(S, W, i, k) \ + RND(S[(80 - i) % 8], S[(81 - i) % 8], \ + S[(82 - i) % 8], S[(83 - i) % 8], \ + S[(84 - i) % 8], S[(85 - i) % 8], \ + S[(86 - i) % 8], S[(87 - i) % 8], \ + W[i] + k) + +/* + * SHA512 block compression function. The 512-bit state is transformed via + * the 512-bit input block to produce a new state. + */ +static void +SHA512_Transform(uint64_t * state, const unsigned char block[128]) +{ + uint64_t W[80]; + uint64_t S[8]; + uint64_t t0, t1; + int i; + + /* 1. Prepare message schedule W. */ + be64dec_vect(W, block, 128); + for (i = 16; i < 80; i++) + W[i] = s1(W[i - 2]) + W[i - 7] + s0(W[i - 15]) + W[i - 16]; + + /* 2. Initialize working variables. */ + memcpy(S, state, 64); + + /* 3. Mix. */ + RNDr(S, W, 0, 0x428a2f98d728ae22ULL); + RNDr(S, W, 1, 0x7137449123ef65cdULL); + RNDr(S, W, 2, 0xb5c0fbcfec4d3b2fULL); + RNDr(S, W, 3, 0xe9b5dba58189dbbcULL); + RNDr(S, W, 4, 0x3956c25bf348b538ULL); + RNDr(S, W, 5, 0x59f111f1b605d019ULL); + RNDr(S, W, 6, 0x923f82a4af194f9bULL); + RNDr(S, W, 7, 0xab1c5ed5da6d8118ULL); + RNDr(S, W, 8, 0xd807aa98a3030242ULL); + RNDr(S, W, 9, 0x12835b0145706fbeULL); + RNDr(S, W, 10, 0x243185be4ee4b28cULL); + RNDr(S, W, 11, 0x550c7dc3d5ffb4e2ULL); + RNDr(S, W, 12, 0x72be5d74f27b896fULL); + RNDr(S, W, 13, 0x80deb1fe3b1696b1ULL); + RNDr(S, W, 14, 0x9bdc06a725c71235ULL); + RNDr(S, W, 15, 0xc19bf174cf692694ULL); + RNDr(S, W, 16, 0xe49b69c19ef14ad2ULL); + RNDr(S, W, 17, 0xefbe4786384f25e3ULL); + RNDr(S, W, 18, 0x0fc19dc68b8cd5b5ULL); + RNDr(S, W, 19, 0x240ca1cc77ac9c65ULL); + RNDr(S, W, 20, 0x2de92c6f592b0275ULL); + RNDr(S, W, 21, 0x4a7484aa6ea6e483ULL); + RNDr(S, W, 22, 0x5cb0a9dcbd41fbd4ULL); + RNDr(S, W, 23, 0x76f988da831153b5ULL); + RNDr(S, W, 24, 0x983e5152ee66dfabULL); + RNDr(S, W, 25, 0xa831c66d2db43210ULL); + RNDr(S, W, 26, 0xb00327c898fb213fULL); + RNDr(S, W, 27, 0xbf597fc7beef0ee4ULL); + RNDr(S, W, 28, 0xc6e00bf33da88fc2ULL); + RNDr(S, W, 29, 0xd5a79147930aa725ULL); + RNDr(S, W, 30, 0x06ca6351e003826fULL); + RNDr(S, W, 31, 0x142929670a0e6e70ULL); + RNDr(S, W, 32, 0x27b70a8546d22ffcULL); + RNDr(S, W, 33, 0x2e1b21385c26c926ULL); + RNDr(S, W, 34, 0x4d2c6dfc5ac42aedULL); + RNDr(S, W, 35, 0x53380d139d95b3dfULL); + RNDr(S, W, 36, 0x650a73548baf63deULL); + RNDr(S, W, 37, 0x766a0abb3c77b2a8ULL); + RNDr(S, W, 38, 0x81c2c92e47edaee6ULL); + RNDr(S, W, 39, 0x92722c851482353bULL); + RNDr(S, W, 40, 0xa2bfe8a14cf10364ULL); + RNDr(S, W, 41, 0xa81a664bbc423001ULL); + RNDr(S, W, 42, 0xc24b8b70d0f89791ULL); + RNDr(S, W, 43, 0xc76c51a30654be30ULL); + RNDr(S, W, 44, 0xd192e819d6ef5218ULL); + RNDr(S, W, 45, 0xd69906245565a910ULL); + RNDr(S, W, 46, 0xf40e35855771202aULL); + RNDr(S, W, 47, 0x106aa07032bbd1b8ULL); + RNDr(S, W, 48, 0x19a4c116b8d2d0c8ULL); + RNDr(S, W, 49, 0x1e376c085141ab53ULL); + RNDr(S, W, 50, 0x2748774cdf8eeb99ULL); + RNDr(S, W, 51, 0x34b0bcb5e19b48a8ULL); + RNDr(S, W, 52, 0x391c0cb3c5c95a63ULL); + RNDr(S, W, 53, 0x4ed8aa4ae3418acbULL); + RNDr(S, W, 54, 0x5b9cca4f7763e373ULL); + RNDr(S, W, 55, 0x682e6ff3d6b2b8a3ULL); + RNDr(S, W, 56, 0x748f82ee5defb2fcULL); + RNDr(S, W, 57, 0x78a5636f43172f60ULL); + RNDr(S, W, 58, 0x84c87814a1f0ab72ULL); + RNDr(S, W, 59, 0x8cc702081a6439ecULL); + RNDr(S, W, 60, 0x90befffa23631e28ULL); + RNDr(S, W, 61, 0xa4506cebde82bde9ULL); + RNDr(S, W, 62, 0xbef9a3f7b2c67915ULL); + RNDr(S, W, 63, 0xc67178f2e372532bULL); + RNDr(S, W, 64, 0xca273eceea26619cULL); + RNDr(S, W, 65, 0xd186b8c721c0c207ULL); + RNDr(S, W, 66, 0xeada7dd6cde0eb1eULL); + RNDr(S, W, 67, 0xf57d4f7fee6ed178ULL); + RNDr(S, W, 68, 0x06f067aa72176fbaULL); + RNDr(S, W, 69, 0x0a637dc5a2c898a6ULL); + RNDr(S, W, 70, 0x113f9804bef90daeULL); + RNDr(S, W, 71, 0x1b710b35131c471bULL); + RNDr(S, W, 72, 0x28db77f523047d84ULL); + RNDr(S, W, 73, 0x32caab7b40c72493ULL); + RNDr(S, W, 74, 0x3c9ebe0a15c9bebcULL); + RNDr(S, W, 75, 0x431d67c49c100d4cULL); + RNDr(S, W, 76, 0x4cc5d4becb3e42b6ULL); + RNDr(S, W, 77, 0x597f299cfc657e2aULL); + RNDr(S, W, 78, 0x5fcb6fab3ad6faecULL); + RNDr(S, W, 79, 0x6c44198c4a475817ULL); + + /* 4. Mix local working variables into global state */ + for (i = 0; i < 8; i++) + state[i] += S[i]; +} + +static const unsigned char PAD[128] = { + 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 +}; + +/* Add padding and terminating bit-count. */ +static void +SHA512_Pad(SHA512_CTX * ctx) +{ + unsigned char len[16]; + uint64_t r, plen; + + /* + * Convert length to a vector of bytes -- we do this now rather + * than later because the length will change after we pad. + */ + be64enc_vect(len, ctx->count, 16); + + /* Add 1--128 bytes so that the resulting length is 112 mod 128 */ + r = (ctx->count[1] >> 3) & 0x7f; + plen = (r < 112) ? (112 - r) : (240 - r); + SHA512_Update(ctx, PAD, (size_t)plen); + + /* Add the terminating bit-count */ + SHA512_Update(ctx, len, 16); +} + +/* SHA-512 initialization. Begins a SHA-512 operation. */ +void +SHA512_Init(SHA512_CTX * ctx) +{ + + /* Zero bits processed so far */ + ctx->count[0] = ctx->count[1] = 0; + + /* Magic initialization constants */ + ctx->state[0] = 0x6a09e667f3bcc908ULL; + ctx->state[1] = 0xbb67ae8584caa73bULL; + ctx->state[2] = 0x3c6ef372fe94f82bULL; + ctx->state[3] = 0xa54ff53a5f1d36f1ULL; + ctx->state[4] = 0x510e527fade682d1ULL; + ctx->state[5] = 0x9b05688c2b3e6c1fULL; + ctx->state[6] = 0x1f83d9abfb41bd6bULL; + ctx->state[7] = 0x5be0cd19137e2179ULL; +} + +/* Add bytes into the hash */ +void +SHA512_Update(SHA512_CTX * ctx, const void *in, size_t len) +{ + uint64_t bitlen[2]; + uint64_t r; + const unsigned char *src = in; + + /* Number of bytes left in the buffer from previous updates */ + r = (ctx->count[1] >> 3) & 0x7f; + + /* Convert the length into a number of bits */ + bitlen[1] = ((uint64_t)len) << 3; + bitlen[0] = ((uint64_t)len) >> 61; + + /* Update number of bits */ + if ((ctx->count[1] += bitlen[1]) < bitlen[1]) + ctx->count[0]++; + ctx->count[0] += bitlen[0]; + + /* Handle the case where we don't need to perform any transforms */ + if (len < 128 - r) { + memcpy(&ctx->buf[r], src, len); + return; + } + + /* Finish the current block */ + memcpy(&ctx->buf[r], src, 128 - r); + SHA512_Transform(ctx->state, ctx->buf); + src += 128 - r; + len -= 128 - r; + + /* Perform complete blocks */ + while (len >= 128) { + SHA512_Transform(ctx->state, src); + src += 128; + len -= 128; + } + + /* Copy left over data into buffer */ + memcpy(ctx->buf, src, len); +} + +/* + * SHA-512 finalization. Pads the input data, exports the hash value, + * and clears the context state. + */ +void +SHA512_Final(unsigned char digest[64], SHA512_CTX * ctx) +{ + + /* Add padding */ + SHA512_Pad(ctx); + + /* Write the hash */ + be64enc_vect(digest, ctx->state, 64); + + /* Clear the context state */ + memset((void *)ctx, 0, sizeof(*ctx)); +} -- cgit v1.2.3