/* * FIPS-180-2 compliant SHA-384/512 implementation * * Copyright The Mbed TLS Contributors * SPDX-License-Identifier: Apache-2.0 * * Licensed 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. */ /* * The SHA-512 Secure Hash Standard was published by NIST in 2002. * * http://csrc.nist.gov/publications/fips/fips180-2/fips180-2.pdf */ #include "common.h" #if defined(MBEDTLS_SHA512_C) || defined(MBEDTLS_SHA384_C) #include "mbedtls/sha512.h" #include "mbedtls/platform_util.h" #include "mbedtls/error.h" #if defined(_MSC_VER) || defined(__WATCOMC__) #define UL64(x) x##ui64 #else #define UL64(x) x##ULL #endif #include #include "mbedtls/platform.h" #if defined(__aarch64__) # if defined(MBEDTLS_SHA512_USE_A64_CRYPTO_IF_PRESENT) || \ defined(MBEDTLS_SHA512_USE_A64_CRYPTO_ONLY) /* *INDENT-OFF* */ /* * Best performance comes from most recent compilers, with intrinsics and -O3. * Must compile with -march=armv8.2-a+sha3, but we can't detect armv8.2-a, and * can't always detect __ARM_FEATURE_SHA512 (notably clang 7-12). * * GCC < 8 won't work at all (lacks the sha512 instructions) * GCC >= 8 uses intrinsics, sets __ARM_FEATURE_SHA512 * * Clang < 7 won't work at all (lacks the sha512 instructions) * Clang 7-12 don't have intrinsics (but we work around that with inline * assembler) or __ARM_FEATURE_SHA512 * Clang == 13.0.0 same as clang 12 (only seen on macOS) * Clang >= 13.0.1 has __ARM_FEATURE_SHA512 and intrinsics */ #if !defined(__ARM_FEATURE_SHA512) /* Test Clang first, as it defines __GNUC__ */ # if defined(__clang__) # if __clang_major__ < 7 # error "A more recent Clang is required for MBEDTLS_SHA512_USE_A64_CRYPTO_*" # elif __clang_major__ < 13 || \ (__clang_major__ == 13 && __clang_minor__ == 0 && __clang_patchlevel__ == 0) /* We implement the intrinsics with inline assembler, so don't error */ # else # error "Must use minimum -march=armv8.2-a+sha3 for MBEDTLS_SHA512_USE_A64_CRYPTO_*" # endif # elif defined(__GNUC__) # if __GNUC__ < 8 # error "A more recent GCC is required for MBEDTLS_SHA512_USE_A64_CRYPTO_*" # else # error "Must use minimum -march=armv8.2-a+sha3 for MBEDTLS_SHA512_USE_A64_CRYPTO_*" # endif # else # error "Only GCC and Clang supported for MBEDTLS_SHA512_USE_A64_CRYPTO_*" # endif #endif /* *INDENT-ON* */ # include # endif # if defined(MBEDTLS_SHA512_USE_A64_CRYPTO_IF_PRESENT) # if defined(__unix__) # if defined(__linux__) /* Our preferred method of detection is getauxval() */ # include # endif /* Use SIGILL on Unix, and fall back to it on Linux */ # include # endif # endif #elif defined(_M_ARM64) # if defined(MBEDTLS_SHA512_USE_A64_CRYPTO_IF_PRESENT) || \ defined(MBEDTLS_SHA512_USE_A64_CRYPTO_ONLY) # include # endif #else # undef MBEDTLS_SHA512_USE_A64_CRYPTO_ONLY # undef MBEDTLS_SHA512_USE_A64_CRYPTO_IF_PRESENT #endif #if defined(MBEDTLS_SHA512_USE_A64_CRYPTO_IF_PRESENT) /* * Capability detection code comes early, so we can disable * MBEDTLS_SHA512_USE_A64_CRYPTO_IF_PRESENT if no detection mechanism found */ #if defined(HWCAP_SHA512) static int mbedtls_a64_crypto_sha512_determine_support(void) { return (getauxval(AT_HWCAP) & HWCAP_SHA512) ? 1 : 0; } #elif defined(__APPLE__) #include #include static int mbedtls_a64_crypto_sha512_determine_support(void) { int value = 0; size_t value_len = sizeof(value); int ret = sysctlbyname("hw.optional.armv8_2_sha512", &value, &value_len, NULL, 0); return ret == 0 && value != 0; } #elif defined(_M_ARM64) /* * As of March 2022, there don't appear to be any PF_ARM_V8_* flags * available to pass to IsProcessorFeaturePresent() to check for * SHA-512 support. So we fall back to the C code only. */ #if defined(_MSC_VER) #pragma message "No mechanism to detect A64_CRYPTO found, using C code only" #else #warning "No mechanism to detect A64_CRYPTO found, using C code only" #endif #elif defined(__unix__) && defined(SIG_SETMASK) /* Detection with SIGILL, setjmp() and longjmp() */ #include #include static jmp_buf return_from_sigill; /* * A64 SHA512 support detection via SIGILL */ static void sigill_handler(int signal) { (void) signal; longjmp(return_from_sigill, 1); } static int mbedtls_a64_crypto_sha512_determine_support(void) { struct sigaction old_action, new_action; sigset_t old_mask; if (sigprocmask(0, NULL, &old_mask)) { return 0; } sigemptyset(&new_action.sa_mask); new_action.sa_flags = 0; new_action.sa_handler = sigill_handler; sigaction(SIGILL, &new_action, &old_action); static int ret = 0; if (setjmp(return_from_sigill) == 0) { /* First return only */ /* If this traps, we will return a second time from setjmp() with 1 */ asm ("sha512h q0, q0, v0.2d" : : : "v0"); ret = 1; } sigaction(SIGILL, &old_action, NULL); sigprocmask(SIG_SETMASK, &old_mask, NULL); return ret; } #else #warning "No mechanism to detect A64_CRYPTO found, using C code only" #undef MBEDTLS_SHA512_USE_A64_CRYPTO_IF_PRESENT #endif /* HWCAP_SHA512, __APPLE__, __unix__ && SIG_SETMASK */ #endif /* MBEDTLS_SHA512_USE_A64_CRYPTO_IF_PRESENT */ #if !defined(MBEDTLS_SHA512_ALT) #define SHA512_BLOCK_SIZE 128 #if defined(MBEDTLS_SHA512_SMALLER) static void sha512_put_uint64_be(uint64_t n, unsigned char *b, uint8_t i) { MBEDTLS_PUT_UINT64_BE(n, b, i); } #else #define sha512_put_uint64_be MBEDTLS_PUT_UINT64_BE #endif /* MBEDTLS_SHA512_SMALLER */ void mbedtls_sha512_init(mbedtls_sha512_context *ctx) { memset(ctx, 0, sizeof(mbedtls_sha512_context)); } void mbedtls_sha512_free(mbedtls_sha512_context *ctx) { if (ctx == NULL) { return; } mbedtls_platform_zeroize(ctx, sizeof(mbedtls_sha512_context)); } void mbedtls_sha512_clone(mbedtls_sha512_context *dst, const mbedtls_sha512_context *src) { *dst = *src; } /* * SHA-512 context setup */ int mbedtls_sha512_starts(mbedtls_sha512_context *ctx, int is384) { #if defined(MBEDTLS_SHA384_C) && defined(MBEDTLS_SHA512_C) if (is384 != 0 && is384 != 1) { return MBEDTLS_ERR_SHA512_BAD_INPUT_DATA; } #elif defined(MBEDTLS_SHA512_C) if (is384 != 0) { return MBEDTLS_ERR_SHA512_BAD_INPUT_DATA; } #else /* defined MBEDTLS_SHA384_C only */ if (is384 == 0) { return MBEDTLS_ERR_SHA512_BAD_INPUT_DATA; } #endif ctx->total[0] = 0; ctx->total[1] = 0; if (is384 == 0) { #if defined(MBEDTLS_SHA512_C) ctx->state[0] = UL64(0x6A09E667F3BCC908); ctx->state[1] = UL64(0xBB67AE8584CAA73B); ctx->state[2] = UL64(0x3C6EF372FE94F82B); ctx->state[3] = UL64(0xA54FF53A5F1D36F1); ctx->state[4] = UL64(0x510E527FADE682D1); ctx->state[5] = UL64(0x9B05688C2B3E6C1F); ctx->state[6] = UL64(0x1F83D9ABFB41BD6B); ctx->state[7] = UL64(0x5BE0CD19137E2179); #endif /* MBEDTLS_SHA512_C */ } else { #if defined(MBEDTLS_SHA384_C) ctx->state[0] = UL64(0xCBBB9D5DC1059ED8); ctx->state[1] = UL64(0x629A292A367CD507); ctx->state[2] = UL64(0x9159015A3070DD17); ctx->state[3] = UL64(0x152FECD8F70E5939); ctx->state[4] = UL64(0x67332667FFC00B31); ctx->state[5] = UL64(0x8EB44A8768581511); ctx->state[6] = UL64(0xDB0C2E0D64F98FA7); ctx->state[7] = UL64(0x47B5481DBEFA4FA4); #endif /* MBEDTLS_SHA384_C */ } #if defined(MBEDTLS_SHA384_C) ctx->is384 = is384; #endif return 0; } #if !defined(MBEDTLS_SHA512_PROCESS_ALT) /* * Round constants */ static const uint64_t K[80] = { UL64(0x428A2F98D728AE22), UL64(0x7137449123EF65CD), UL64(0xB5C0FBCFEC4D3B2F), UL64(0xE9B5DBA58189DBBC), UL64(0x3956C25BF348B538), UL64(0x59F111F1B605D019), UL64(0x923F82A4AF194F9B), UL64(0xAB1C5ED5DA6D8118), UL64(0xD807AA98A3030242), UL64(0x12835B0145706FBE), UL64(0x243185BE4EE4B28C), UL64(0x550C7DC3D5FFB4E2), UL64(0x72BE5D74F27B896F), UL64(0x80DEB1FE3B1696B1), UL64(0x9BDC06A725C71235), UL64(0xC19BF174CF692694), UL64(0xE49B69C19EF14AD2), UL64(0xEFBE4786384F25E3), UL64(0x0FC19DC68B8CD5B5), UL64(0x240CA1CC77AC9C65), UL64(0x2DE92C6F592B0275), UL64(0x4A7484AA6EA6E483), UL64(0x5CB0A9DCBD41FBD4), UL64(0x76F988DA831153B5), UL64(0x983E5152EE66DFAB), UL64(0xA831C66D2DB43210), UL64(0xB00327C898FB213F), UL64(0xBF597FC7BEEF0EE4), UL64(0xC6E00BF33DA88FC2), UL64(0xD5A79147930AA725), UL64(0x06CA6351E003826F), UL64(0x142929670A0E6E70), UL64(0x27B70A8546D22FFC), UL64(0x2E1B21385C26C926), UL64(0x4D2C6DFC5AC42AED), UL64(0x53380D139D95B3DF), UL64(0x650A73548BAF63DE), UL64(0x766A0ABB3C77B2A8), UL64(0x81C2C92E47EDAEE6), UL64(0x92722C851482353B), UL64(0xA2BFE8A14CF10364), UL64(0xA81A664BBC423001), UL64(0xC24B8B70D0F89791), UL64(0xC76C51A30654BE30), UL64(0xD192E819D6EF5218), UL64(0xD69906245565A910), UL64(0xF40E35855771202A), UL64(0x106AA07032BBD1B8), UL64(0x19A4C116B8D2D0C8), UL64(0x1E376C085141AB53), UL64(0x2748774CDF8EEB99), UL64(0x34B0BCB5E19B48A8), UL64(0x391C0CB3C5C95A63), UL64(0x4ED8AA4AE3418ACB), UL64(0x5B9CCA4F7763E373), UL64(0x682E6FF3D6B2B8A3), UL64(0x748F82EE5DEFB2FC), UL64(0x78A5636F43172F60), UL64(0x84C87814A1F0AB72), UL64(0x8CC702081A6439EC), UL64(0x90BEFFFA23631E28), UL64(0xA4506CEBDE82BDE9), UL64(0xBEF9A3F7B2C67915), UL64(0xC67178F2E372532B), UL64(0xCA273ECEEA26619C), UL64(0xD186B8C721C0C207), UL64(0xEADA7DD6CDE0EB1E), UL64(0xF57D4F7FEE6ED178), UL64(0x06F067AA72176FBA), UL64(0x0A637DC5A2C898A6), UL64(0x113F9804BEF90DAE), UL64(0x1B710B35131C471B), UL64(0x28DB77F523047D84), UL64(0x32CAAB7B40C72493), UL64(0x3C9EBE0A15C9BEBC), UL64(0x431D67C49C100D4C), UL64(0x4CC5D4BECB3E42B6), UL64(0x597F299CFC657E2A), UL64(0x5FCB6FAB3AD6FAEC), UL64(0x6C44198C4A475817) }; #endif #if defined(MBEDTLS_SHA512_USE_A64_CRYPTO_IF_PRESENT) || \ defined(MBEDTLS_SHA512_USE_A64_CRYPTO_ONLY) #if defined(MBEDTLS_SHA512_USE_A64_CRYPTO_ONLY) # define mbedtls_internal_sha512_process_many_a64_crypto mbedtls_internal_sha512_process_many # define mbedtls_internal_sha512_process_a64_crypto mbedtls_internal_sha512_process #endif /* Accelerated SHA-512 implementation originally written by Simon Tatham for PuTTY, * under the MIT licence; dual-licensed as Apache 2 with his kind permission. */ #if defined(__clang__) && \ (__clang_major__ < 13 || \ (__clang_major__ == 13 && __clang_minor__ == 0 && __clang_patchlevel__ == 0)) static inline uint64x2_t vsha512su0q_u64(uint64x2_t x, uint64x2_t y) { asm ("sha512su0 %0.2D,%1.2D" : "+w" (x) : "w" (y)); return x; } static inline uint64x2_t vsha512su1q_u64(uint64x2_t x, uint64x2_t y, uint64x2_t z) { asm ("sha512su1 %0.2D,%1.2D,%2.2D" : "+w" (x) : "w" (y), "w" (z)); return x; } static inline uint64x2_t vsha512hq_u64(uint64x2_t x, uint64x2_t y, uint64x2_t z) { asm ("sha512h %0,%1,%2.2D" : "+w" (x) : "w" (y), "w" (z)); return x; } static inline uint64x2_t vsha512h2q_u64(uint64x2_t x, uint64x2_t y, uint64x2_t z) { asm ("sha512h2 %0,%1,%2.2D" : "+w" (x) : "w" (y), "w" (z)); return x; } #endif /* __clang__ etc */ static size_t mbedtls_internal_sha512_process_many_a64_crypto( mbedtls_sha512_context *ctx, const uint8_t *msg, size_t len) { uint64x2_t ab = vld1q_u64(&ctx->state[0]); uint64x2_t cd = vld1q_u64(&ctx->state[2]); uint64x2_t ef = vld1q_u64(&ctx->state[4]); uint64x2_t gh = vld1q_u64(&ctx->state[6]); size_t processed = 0; for (; len >= SHA512_BLOCK_SIZE; processed += SHA512_BLOCK_SIZE, msg += SHA512_BLOCK_SIZE, len -= SHA512_BLOCK_SIZE) { uint64x2_t initial_sum, sum, intermed; uint64x2_t ab_orig = ab; uint64x2_t cd_orig = cd; uint64x2_t ef_orig = ef; uint64x2_t gh_orig = gh; uint64x2_t s0 = (uint64x2_t) vld1q_u8(msg + 16 * 0); uint64x2_t s1 = (uint64x2_t) vld1q_u8(msg + 16 * 1); uint64x2_t s2 = (uint64x2_t) vld1q_u8(msg + 16 * 2); uint64x2_t s3 = (uint64x2_t) vld1q_u8(msg + 16 * 3); uint64x2_t s4 = (uint64x2_t) vld1q_u8(msg + 16 * 4); uint64x2_t s5 = (uint64x2_t) vld1q_u8(msg + 16 * 5); uint64x2_t s6 = (uint64x2_t) vld1q_u8(msg + 16 * 6); uint64x2_t s7 = (uint64x2_t) vld1q_u8(msg + 16 * 7); #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ /* assume LE if these not defined; untested on BE */ s0 = vreinterpretq_u64_u8(vrev64q_u8(vreinterpretq_u8_u64(s0))); s1 = vreinterpretq_u64_u8(vrev64q_u8(vreinterpretq_u8_u64(s1))); s2 = vreinterpretq_u64_u8(vrev64q_u8(vreinterpretq_u8_u64(s2))); s3 = vreinterpretq_u64_u8(vrev64q_u8(vreinterpretq_u8_u64(s3))); s4 = vreinterpretq_u64_u8(vrev64q_u8(vreinterpretq_u8_u64(s4))); s5 = vreinterpretq_u64_u8(vrev64q_u8(vreinterpretq_u8_u64(s5))); s6 = vreinterpretq_u64_u8(vrev64q_u8(vreinterpretq_u8_u64(s6))); s7 = vreinterpretq_u64_u8(vrev64q_u8(vreinterpretq_u8_u64(s7))); #endif /* Rounds 0 and 1 */ initial_sum = vaddq_u64(s0, vld1q_u64(&K[0])); sum = vaddq_u64(vextq_u64(initial_sum, initial_sum, 1), gh); intermed = vsha512hq_u64(sum, vextq_u64(ef, gh, 1), vextq_u64(cd, ef, 1)); gh = vsha512h2q_u64(intermed, cd, ab); cd = vaddq_u64(cd, intermed); /* Rounds 2 and 3 */ initial_sum = vaddq_u64(s1, vld1q_u64(&K[2])); sum = vaddq_u64(vextq_u64(initial_sum, initial_sum, 1), ef); intermed = vsha512hq_u64(sum, vextq_u64(cd, ef, 1), vextq_u64(ab, cd, 1)); ef = vsha512h2q_u64(intermed, ab, gh); ab = vaddq_u64(ab, intermed); /* Rounds 4 and 5 */ initial_sum = vaddq_u64(s2, vld1q_u64(&K[4])); sum = vaddq_u64(vextq_u64(initial_sum, initial_sum, 1), cd); intermed = vsha512hq_u64(sum, vextq_u64(ab, cd, 1), vextq_u64(gh, ab, 1)); cd = vsha512h2q_u64(intermed, gh, ef); gh = vaddq_u64(gh, intermed); /* Rounds 6 and 7 */ initial_sum = vaddq_u64(s3, vld1q_u64(&K[6])); sum = vaddq_u64(vextq_u64(initial_sum, initial_sum, 1), ab); intermed = vsha512hq_u64(sum, vextq_u64(gh, ab, 1), vextq_u64(ef, gh, 1)); ab = vsha512h2q_u64(intermed, ef, cd); ef = vaddq_u64(ef, intermed); /* Rounds 8 and 9 */ initial_sum = vaddq_u64(s4, vld1q_u64(&K[8])); sum = vaddq_u64(vextq_u64(initial_sum, initial_sum, 1), gh); intermed = vsha512hq_u64(sum, vextq_u64(ef, gh, 1), vextq_u64(cd, ef, 1)); gh = vsha512h2q_u64(intermed, cd, ab); cd = vaddq_u64(cd, intermed); /* Rounds 10 and 11 */ initial_sum = vaddq_u64(s5, vld1q_u64(&K[10])); sum = vaddq_u64(vextq_u64(initial_sum, initial_sum, 1), ef); intermed = vsha512hq_u64(sum, vextq_u64(cd, ef, 1), vextq_u64(ab, cd, 1)); ef = vsha512h2q_u64(intermed, ab, gh); ab = vaddq_u64(ab, intermed); /* Rounds 12 and 13 */ initial_sum = vaddq_u64(s6, vld1q_u64(&K[12])); sum = vaddq_u64(vextq_u64(initial_sum, initial_sum, 1), cd); intermed = vsha512hq_u64(sum, vextq_u64(ab, cd, 1), vextq_u64(gh, ab, 1)); cd = vsha512h2q_u64(intermed, gh, ef); gh = vaddq_u64(gh, intermed); /* Rounds 14 and 15 */ initial_sum = vaddq_u64(s7, vld1q_u64(&K[14])); sum = vaddq_u64(vextq_u64(initial_sum, initial_sum, 1), ab); intermed = vsha512hq_u64(sum, vextq_u64(gh, ab, 1), vextq_u64(ef, gh, 1)); ab = vsha512h2q_u64(intermed, ef, cd); ef = vaddq_u64(ef, intermed); for (unsigned int t = 16; t < 80; t += 16) { /* Rounds t and t + 1 */ s0 = vsha512su1q_u64(vsha512su0q_u64(s0, s1), s7, vextq_u64(s4, s5, 1)); initial_sum = vaddq_u64(s0, vld1q_u64(&K[t])); sum = vaddq_u64(vextq_u64(initial_sum, initial_sum, 1), gh); intermed = vsha512hq_u64(sum, vextq_u64(ef, gh, 1), vextq_u64(cd, ef, 1)); gh = vsha512h2q_u64(intermed, cd, ab); cd = vaddq_u64(cd, intermed); /* Rounds t + 2 and t + 3 */ s1 = vsha512su1q_u64(vsha512su0q_u64(s1, s2), s0, vextq_u64(s5, s6, 1)); initial_sum = vaddq_u64(s1, vld1q_u64(&K[t + 2])); sum = vaddq_u64(vextq_u64(initial_sum, initial_sum, 1), ef); intermed = vsha512hq_u64(sum, vextq_u64(cd, ef, 1), vextq_u64(ab, cd, 1)); ef = vsha512h2q_u64(intermed, ab, gh); ab = vaddq_u64(ab, intermed); /* Rounds t + 4 and t + 5 */ s2 = vsha512su1q_u64(vsha512su0q_u64(s2, s3), s1, vextq_u64(s6, s7, 1)); initial_sum = vaddq_u64(s2, vld1q_u64(&K[t + 4])); sum = vaddq_u64(vextq_u64(initial_sum, initial_sum, 1), cd); intermed = vsha512hq_u64(sum, vextq_u64(ab, cd, 1), vextq_u64(gh, ab, 1)); cd = vsha512h2q_u64(intermed, gh, ef); gh = vaddq_u64(gh, intermed); /* Rounds t + 6 and t + 7 */ s3 = vsha512su1q_u64(vsha512su0q_u64(s3, s4), s2, vextq_u64(s7, s0, 1)); initial_sum = vaddq_u64(s3, vld1q_u64(&K[t + 6])); sum = vaddq_u64(vextq_u64(initial_sum, initial_sum, 1), ab); intermed = vsha512hq_u64(sum, vextq_u64(gh, ab, 1), vextq_u64(ef, gh, 1)); ab = vsha512h2q_u64(intermed, ef, cd); ef = vaddq_u64(ef, intermed); /* Rounds t + 8 and t + 9 */ s4 = vsha512su1q_u64(vsha512su0q_u64(s4, s5), s3, vextq_u64(s0, s1, 1)); initial_sum = vaddq_u64(s4, vld1q_u64(&K[t + 8])); sum = vaddq_u64(vextq_u64(initial_sum, initial_sum, 1), gh); intermed = vsha512hq_u64(sum, vextq_u64(ef, gh, 1), vextq_u64(cd, ef, 1)); gh = vsha512h2q_u64(intermed, cd, ab); cd = vaddq_u64(cd, intermed); /* Rounds t + 10 and t + 11 */ s5 = vsha512su1q_u64(vsha512su0q_u64(s5, s6), s4, vextq_u64(s1, s2, 1)); initial_sum = vaddq_u64(s5, vld1q_u64(&K[t + 10])); sum = vaddq_u64(vextq_u64(initial_sum, initial_sum, 1), ef); intermed = vsha512hq_u64(sum, vextq_u64(cd, ef, 1), vextq_u64(ab, cd, 1)); ef = vsha512h2q_u64(intermed, ab, gh); ab = vaddq_u64(ab, intermed); /* Rounds t + 12 and t + 13 */ s6 = vsha512su1q_u64(vsha512su0q_u64(s6, s7), s5, vextq_u64(s2, s3, 1)); initial_sum = vaddq_u64(s6, vld1q_u64(&K[t + 12])); sum = vaddq_u64(vextq_u64(initial_sum, initial_sum, 1), cd); intermed = vsha512hq_u64(sum, vextq_u64(ab, cd, 1), vextq_u64(gh, ab, 1)); cd = vsha512h2q_u64(intermed, gh, ef); gh = vaddq_u64(gh, intermed); /* Rounds t + 14 and t + 15 */ s7 = vsha512su1q_u64(vsha512su0q_u64(s7, s0), s6, vextq_u64(s3, s4, 1)); initial_sum = vaddq_u64(s7, vld1q_u64(&K[t + 14])); sum = vaddq_u64(vextq_u64(initial_sum, initial_sum, 1), ab); intermed = vsha512hq_u64(sum, vextq_u64(gh, ab, 1), vextq_u64(ef, gh, 1)); ab = vsha512h2q_u64(intermed, ef, cd); ef = vaddq_u64(ef, intermed); } ab = vaddq_u64(ab, ab_orig); cd = vaddq_u64(cd, cd_orig); ef = vaddq_u64(ef, ef_orig); gh = vaddq_u64(gh, gh_orig); } vst1q_u64(&ctx->state[0], ab); vst1q_u64(&ctx->state[2], cd); vst1q_u64(&ctx->state[4], ef); vst1q_u64(&ctx->state[6], gh); return processed; } #if defined(MBEDTLS_SHA512_USE_A64_CRYPTO_IF_PRESENT) /* * This function is for internal use only if we are building both C and A64 * versions, otherwise it is renamed to be the public mbedtls_internal_sha512_process() */ static #endif int mbedtls_internal_sha512_process_a64_crypto(mbedtls_sha512_context *ctx, const unsigned char data[SHA512_BLOCK_SIZE]) { return (mbedtls_internal_sha512_process_many_a64_crypto(ctx, data, SHA512_BLOCK_SIZE) == SHA512_BLOCK_SIZE) ? 0 : -1; } #endif /* MBEDTLS_SHA512_USE_A64_CRYPTO_IF_PRESENT || MBEDTLS_SHA512_USE_A64_CRYPTO_ONLY */ #if !defined(MBEDTLS_SHA512_USE_A64_CRYPTO_IF_PRESENT) #define mbedtls_internal_sha512_process_many_c mbedtls_internal_sha512_process_many #define mbedtls_internal_sha512_process_c mbedtls_internal_sha512_process #endif #if !defined(MBEDTLS_SHA512_PROCESS_ALT) && !defined(MBEDTLS_SHA512_USE_A64_CRYPTO_ONLY) #if defined(MBEDTLS_SHA512_USE_A64_CRYPTO_IF_PRESENT) /* * This function is for internal use only if we are building both C and A64 * versions, otherwise it is renamed to be the public mbedtls_internal_sha512_process() */ static #endif int mbedtls_internal_sha512_process_c(mbedtls_sha512_context *ctx, const unsigned char data[SHA512_BLOCK_SIZE]) { int i; struct { uint64_t temp1, temp2, W[80]; uint64_t A[8]; } local; #define SHR(x, n) ((x) >> (n)) #define ROTR(x, n) (SHR((x), (n)) | ((x) << (64 - (n)))) #define S0(x) (ROTR(x, 1) ^ ROTR(x, 8) ^ SHR(x, 7)) #define S1(x) (ROTR(x, 19) ^ ROTR(x, 61) ^ SHR(x, 6)) #define S2(x) (ROTR(x, 28) ^ ROTR(x, 34) ^ ROTR(x, 39)) #define S3(x) (ROTR(x, 14) ^ ROTR(x, 18) ^ ROTR(x, 41)) #define F0(x, y, z) (((x) & (y)) | ((z) & ((x) | (y)))) #define F1(x, y, z) ((z) ^ ((x) & ((y) ^ (z)))) #define P(a, b, c, d, e, f, g, h, x, K) \ do \ { \ local.temp1 = (h) + S3(e) + F1((e), (f), (g)) + (K) + (x); \ local.temp2 = S2(a) + F0((a), (b), (c)); \ (d) += local.temp1; (h) = local.temp1 + local.temp2; \ } while (0) for (i = 0; i < 8; i++) { local.A[i] = ctx->state[i]; } #if defined(MBEDTLS_SHA512_SMALLER) for (i = 0; i < 80; i++) { if (i < 16) { local.W[i] = MBEDTLS_GET_UINT64_BE(data, i << 3); } else { local.W[i] = S1(local.W[i - 2]) + local.W[i - 7] + S0(local.W[i - 15]) + local.W[i - 16]; } P(local.A[0], local.A[1], local.A[2], local.A[3], local.A[4], local.A[5], local.A[6], local.A[7], local.W[i], K[i]); local.temp1 = local.A[7]; local.A[7] = local.A[6]; local.A[6] = local.A[5]; local.A[5] = local.A[4]; local.A[4] = local.A[3]; local.A[3] = local.A[2]; local.A[2] = local.A[1]; local.A[1] = local.A[0]; local.A[0] = local.temp1; } #else /* MBEDTLS_SHA512_SMALLER */ for (i = 0; i < 16; i++) { local.W[i] = MBEDTLS_GET_UINT64_BE(data, i << 3); } for (; i < 80; i++) { local.W[i] = S1(local.W[i - 2]) + local.W[i - 7] + S0(local.W[i - 15]) + local.W[i - 16]; } i = 0; do { P(local.A[0], local.A[1], local.A[2], local.A[3], local.A[4], local.A[5], local.A[6], local.A[7], local.W[i], K[i]); i++; P(local.A[7], local.A[0], local.A[1], local.A[2], local.A[3], local.A[4], local.A[5], local.A[6], local.W[i], K[i]); i++; P(local.A[6], local.A[7], local.A[0], local.A[1], local.A[2], local.A[3], local.A[4], local.A[5], local.W[i], K[i]); i++; P(local.A[5], local.A[6], local.A[7], local.A[0], local.A[1], local.A[2], local.A[3], local.A[4], local.W[i], K[i]); i++; P(local.A[4], local.A[5], local.A[6], local.A[7], local.A[0], local.A[1], local.A[2], local.A[3], local.W[i], K[i]); i++; P(local.A[3], local.A[4], local.A[5], local.A[6], local.A[7], local.A[0], local.A[1], local.A[2], local.W[i], K[i]); i++; P(local.A[2], local.A[3], local.A[4], local.A[5], local.A[6], local.A[7], local.A[0], local.A[1], local.W[i], K[i]); i++; P(local.A[1], local.A[2], local.A[3], local.A[4], local.A[5], local.A[6], local.A[7], local.A[0], local.W[i], K[i]); i++; } while (i < 80); #endif /* MBEDTLS_SHA512_SMALLER */ for (i = 0; i < 8; i++) { ctx->state[i] += local.A[i]; } /* Zeroise buffers and variables to clear sensitive data from memory. */ mbedtls_platform_zeroize(&local, sizeof(local)); return 0; } #endif /* !MBEDTLS_SHA512_PROCESS_ALT && !MBEDTLS_SHA512_USE_A64_CRYPTO_ONLY */ #if !defined(MBEDTLS_SHA512_USE_A64_CRYPTO_ONLY) static size_t mbedtls_internal_sha512_process_many_c( mbedtls_sha512_context *ctx, const uint8_t *data, size_t len) { size_t processed = 0; while (len >= SHA512_BLOCK_SIZE) { if (mbedtls_internal_sha512_process_c(ctx, data) != 0) { return 0; } data += SHA512_BLOCK_SIZE; len -= SHA512_BLOCK_SIZE; processed += SHA512_BLOCK_SIZE; } return processed; } #endif /* !MBEDTLS_SHA512_USE_A64_CRYPTO_ONLY */ #if defined(MBEDTLS_SHA512_USE_A64_CRYPTO_IF_PRESENT) static int mbedtls_a64_crypto_sha512_has_support(void) { static int done = 0; static int supported = 0; if (!done) { supported = mbedtls_a64_crypto_sha512_determine_support(); done = 1; } return supported; } static size_t mbedtls_internal_sha512_process_many(mbedtls_sha512_context *ctx, const uint8_t *msg, size_t len) { if (mbedtls_a64_crypto_sha512_has_support()) { return mbedtls_internal_sha512_process_many_a64_crypto(ctx, msg, len); } else { return mbedtls_internal_sha512_process_many_c(ctx, msg, len); } } int mbedtls_internal_sha512_process(mbedtls_sha512_context *ctx, const unsigned char data[SHA512_BLOCK_SIZE]) { if (mbedtls_a64_crypto_sha512_has_support()) { return mbedtls_internal_sha512_process_a64_crypto(ctx, data); } else { return mbedtls_internal_sha512_process_c(ctx, data); } } #endif /* MBEDTLS_SHA512_USE_A64_CRYPTO_IF_PRESENT */ /* * SHA-512 process buffer */ int mbedtls_sha512_update(mbedtls_sha512_context *ctx, const unsigned char *input, size_t ilen) { int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; size_t fill; unsigned int left; if (ilen == 0) { return 0; } left = (unsigned int) (ctx->total[0] & 0x7F); fill = SHA512_BLOCK_SIZE - left; ctx->total[0] += (uint64_t) ilen; if (ctx->total[0] < (uint64_t) ilen) { ctx->total[1]++; } if (left && ilen >= fill) { memcpy((void *) (ctx->buffer + left), input, fill); if ((ret = mbedtls_internal_sha512_process(ctx, ctx->buffer)) != 0) { return ret; } input += fill; ilen -= fill; left = 0; } while (ilen >= SHA512_BLOCK_SIZE) { size_t processed = mbedtls_internal_sha512_process_many(ctx, input, ilen); if (processed < SHA512_BLOCK_SIZE) { return MBEDTLS_ERR_ERROR_GENERIC_ERROR; } input += processed; ilen -= processed; } if (ilen > 0) { memcpy((void *) (ctx->buffer + left), input, ilen); } return 0; } /* * SHA-512 final digest */ int mbedtls_sha512_finish(mbedtls_sha512_context *ctx, unsigned char *output) { int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; unsigned used; uint64_t high, low; /* * Add padding: 0x80 then 0x00 until 16 bytes remain for the length */ used = ctx->total[0] & 0x7F; ctx->buffer[used++] = 0x80; if (used <= 112) { /* Enough room for padding + length in current block */ memset(ctx->buffer + used, 0, 112 - used); } else { /* We'll need an extra block */ memset(ctx->buffer + used, 0, SHA512_BLOCK_SIZE - used); if ((ret = mbedtls_internal_sha512_process(ctx, ctx->buffer)) != 0) { return ret; } memset(ctx->buffer, 0, 112); } /* * Add message length */ high = (ctx->total[0] >> 61) | (ctx->total[1] << 3); low = (ctx->total[0] << 3); sha512_put_uint64_be(high, ctx->buffer, 112); sha512_put_uint64_be(low, ctx->buffer, 120); if ((ret = mbedtls_internal_sha512_process(ctx, ctx->buffer)) != 0) { return ret; } /* * Output final state */ sha512_put_uint64_be(ctx->state[0], output, 0); sha512_put_uint64_be(ctx->state[1], output, 8); sha512_put_uint64_be(ctx->state[2], output, 16); sha512_put_uint64_be(ctx->state[3], output, 24); sha512_put_uint64_be(ctx->state[4], output, 32); sha512_put_uint64_be(ctx->state[5], output, 40); int truncated = 0; #if defined(MBEDTLS_SHA384_C) truncated = ctx->is384; #endif if (!truncated) { sha512_put_uint64_be(ctx->state[6], output, 48); sha512_put_uint64_be(ctx->state[7], output, 56); } return 0; } #endif /* !MBEDTLS_SHA512_ALT */ /* * output = SHA-512( input buffer ) */ int mbedtls_sha512(const unsigned char *input, size_t ilen, unsigned char *output, int is384) { int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; mbedtls_sha512_context ctx; #if defined(MBEDTLS_SHA384_C) && defined(MBEDTLS_SHA512_C) if (is384 != 0 && is384 != 1) { return MBEDTLS_ERR_SHA512_BAD_INPUT_DATA; } #elif defined(MBEDTLS_SHA512_C) if (is384 != 0) { return MBEDTLS_ERR_SHA512_BAD_INPUT_DATA; } #else /* defined MBEDTLS_SHA384_C only */ if (is384 == 0) { return MBEDTLS_ERR_SHA512_BAD_INPUT_DATA; } #endif mbedtls_sha512_init(&ctx); if ((ret = mbedtls_sha512_starts(&ctx, is384)) != 0) { goto exit; } if ((ret = mbedtls_sha512_update(&ctx, input, ilen)) != 0) { goto exit; } if ((ret = mbedtls_sha512_finish(&ctx, output)) != 0) { goto exit; } exit: mbedtls_sha512_free(&ctx); return ret; } #if defined(MBEDTLS_SELF_TEST) /* * FIPS-180-2 test vectors */ static const unsigned char sha_test_buf[3][113] = { { "abc" }, { "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu" }, { "" } }; static const size_t sha_test_buflen[3] = { 3, 112, 1000 }; typedef const unsigned char (sha_test_sum_t)[64]; /* * SHA-384 test vectors */ #if defined(MBEDTLS_SHA384_C) static sha_test_sum_t sha384_test_sum[] = { { 0xCB, 0x00, 0x75, 0x3F, 0x45, 0xA3, 0x5E, 0x8B, 0xB5, 0xA0, 0x3D, 0x69, 0x9A, 0xC6, 0x50, 0x07, 0x27, 0x2C, 0x32, 0xAB, 0x0E, 0xDE, 0xD1, 0x63, 0x1A, 0x8B, 0x60, 0x5A, 0x43, 0xFF, 0x5B, 0xED, 0x80, 0x86, 0x07, 0x2B, 0xA1, 0xE7, 0xCC, 0x23, 0x58, 0xBA, 0xEC, 0xA1, 0x34, 0xC8, 0x25, 0xA7 }, { 0x09, 0x33, 0x0C, 0x33, 0xF7, 0x11, 0x47, 0xE8, 0x3D, 0x19, 0x2F, 0xC7, 0x82, 0xCD, 0x1B, 0x47, 0x53, 0x11, 0x1B, 0x17, 0x3B, 0x3B, 0x05, 0xD2, 0x2F, 0xA0, 0x80, 0x86, 0xE3, 0xB0, 0xF7, 0x12, 0xFC, 0xC7, 0xC7, 0x1A, 0x55, 0x7E, 0x2D, 0xB9, 0x66, 0xC3, 0xE9, 0xFA, 0x91, 0x74, 0x60, 0x39 }, { 0x9D, 0x0E, 0x18, 0x09, 0x71, 0x64, 0x74, 0xCB, 0x08, 0x6E, 0x83, 0x4E, 0x31, 0x0A, 0x4A, 0x1C, 0xED, 0x14, 0x9E, 0x9C, 0x00, 0xF2, 0x48, 0x52, 0x79, 0x72, 0xCE, 0xC5, 0x70, 0x4C, 0x2A, 0x5B, 0x07, 0xB8, 0xB3, 0xDC, 0x38, 0xEC, 0xC4, 0xEB, 0xAE, 0x97, 0xDD, 0xD8, 0x7F, 0x3D, 0x89, 0x85 } }; #endif /* MBEDTLS_SHA384_C */ /* * SHA-512 test vectors */ #if defined(MBEDTLS_SHA512_C) static sha_test_sum_t sha512_test_sum[] = { { 0xDD, 0xAF, 0x35, 0xA1, 0x93, 0x61, 0x7A, 0xBA, 0xCC, 0x41, 0x73, 0x49, 0xAE, 0x20, 0x41, 0x31, 0x12, 0xE6, 0xFA, 0x4E, 0x89, 0xA9, 0x7E, 0xA2, 0x0A, 0x9E, 0xEE, 0xE6, 0x4B, 0x55, 0xD3, 0x9A, 0x21, 0x92, 0x99, 0x2A, 0x27, 0x4F, 0xC1, 0xA8, 0x36, 0xBA, 0x3C, 0x23, 0xA3, 0xFE, 0xEB, 0xBD, 0x45, 0x4D, 0x44, 0x23, 0x64, 0x3C, 0xE8, 0x0E, 0x2A, 0x9A, 0xC9, 0x4F, 0xA5, 0x4C, 0xA4, 0x9F }, { 0x8E, 0x95, 0x9B, 0x75, 0xDA, 0xE3, 0x13, 0xDA, 0x8C, 0xF4, 0xF7, 0x28, 0x14, 0xFC, 0x14, 0x3F, 0x8F, 0x77, 0x79, 0xC6, 0xEB, 0x9F, 0x7F, 0xA1, 0x72, 0x99, 0xAE, 0xAD, 0xB6, 0x88, 0x90, 0x18, 0x50, 0x1D, 0x28, 0x9E, 0x49, 0x00, 0xF7, 0xE4, 0x33, 0x1B, 0x99, 0xDE, 0xC4, 0xB5, 0x43, 0x3A, 0xC7, 0xD3, 0x29, 0xEE, 0xB6, 0xDD, 0x26, 0x54, 0x5E, 0x96, 0xE5, 0x5B, 0x87, 0x4B, 0xE9, 0x09 }, { 0xE7, 0x18, 0x48, 0x3D, 0x0C, 0xE7, 0x69, 0x64, 0x4E, 0x2E, 0x42, 0xC7, 0xBC, 0x15, 0xB4, 0x63, 0x8E, 0x1F, 0x98, 0xB1, 0x3B, 0x20, 0x44, 0x28, 0x56, 0x32, 0xA8, 0x03, 0xAF, 0xA9, 0x73, 0xEB, 0xDE, 0x0F, 0xF2, 0x44, 0x87, 0x7E, 0xA6, 0x0A, 0x4C, 0xB0, 0x43, 0x2C, 0xE5, 0x77, 0xC3, 0x1B, 0xEB, 0x00, 0x9C, 0x5C, 0x2C, 0x49, 0xAA, 0x2E, 0x4E, 0xAD, 0xB2, 0x17, 0xAD, 0x8C, 0xC0, 0x9B } }; #endif /* MBEDTLS_SHA512_C */ #define ARRAY_LENGTH(a) (sizeof(a) / sizeof((a)[0])) static int mbedtls_sha512_common_self_test(int verbose, int is384) { int i, buflen, ret = 0; unsigned char *buf; unsigned char sha512sum[64]; mbedtls_sha512_context ctx; #if defined(MBEDTLS_SHA384_C) && defined(MBEDTLS_SHA512_C) sha_test_sum_t *sha_test_sum = (is384) ? sha384_test_sum : sha512_test_sum; #elif defined(MBEDTLS_SHA512_C) sha_test_sum_t *sha_test_sum = sha512_test_sum; #else sha_test_sum_t *sha_test_sum = sha384_test_sum; #endif buf = mbedtls_calloc(1024, sizeof(unsigned char)); if (NULL == buf) { if (verbose != 0) { mbedtls_printf("Buffer allocation failed\n"); } return 1; } mbedtls_sha512_init(&ctx); for (i = 0; i < 3; i++) { if (verbose != 0) { mbedtls_printf(" SHA-%d test #%d: ", 512 - is384 * 128, i + 1); } if ((ret = mbedtls_sha512_starts(&ctx, is384)) != 0) { goto fail; } if (i == 2) { memset(buf, 'a', buflen = 1000); for (int j = 0; j < 1000; j++) { ret = mbedtls_sha512_update(&ctx, buf, buflen); if (ret != 0) { goto fail; } } } else { ret = mbedtls_sha512_update(&ctx, sha_test_buf[i], sha_test_buflen[i]); if (ret != 0) { goto fail; } } if ((ret = mbedtls_sha512_finish(&ctx, sha512sum)) != 0) { goto fail; } if (memcmp(sha512sum, sha_test_sum[i], 64 - is384 * 16) != 0) { ret = 1; goto fail; } if (verbose != 0) { mbedtls_printf("passed\n"); } } if (verbose != 0) { mbedtls_printf("\n"); } goto exit; fail: if (verbose != 0) { mbedtls_printf("failed\n"); } exit: mbedtls_sha512_free(&ctx); mbedtls_free(buf); return ret; } #if defined(MBEDTLS_SHA512_C) int mbedtls_sha512_self_test(int verbose) { return mbedtls_sha512_common_self_test(verbose, 0); } #endif /* MBEDTLS_SHA512_C */ #if defined(MBEDTLS_SHA384_C) int mbedtls_sha384_self_test(int verbose) { return mbedtls_sha512_common_self_test(verbose, 1); } #endif /* MBEDTLS_SHA384_C */ #undef ARRAY_LENGTH #endif /* MBEDTLS_SELF_TEST */ #endif /* MBEDTLS_SHA512_C || MBEDTLS_SHA384_C */