| /* |
| * FIPS-180-2 compliant SHA-256 implementation |
| * |
| * Copyright The Mbed TLS Contributors |
| * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later |
| */ |
| /* |
| * The SHA-256 Secure Hash Standard was published by NIST in 2002. |
| * |
| * http://csrc.nist.gov/publications/fips/fips180-2/fips180-2.pdf |
| */ |
| |
| #if defined(__clang__) && (__clang_major__ >= 4) |
| |
| /* Ideally, we would simply use MBEDTLS_ARCH_IS_ARMV8_A in the following #if, |
| * but that is defined by build_info.h, and we need this block to happen first. */ |
| #if defined(__ARM_ARCH) && (__ARM_ARCH_PROFILE == 'A') |
| #if __ARM_ARCH >= 8 |
| #define MBEDTLS_SHA256_ARCH_IS_ARMV8_A |
| #endif |
| #endif |
| |
| #if defined(MBEDTLS_SHA256_ARCH_IS_ARMV8_A) && !defined(__ARM_FEATURE_CRYPTO) |
| /* TODO: Re-consider above after https://reviews.llvm.org/D131064 merged. |
| * |
| * The intrinsic declaration are guarded by predefined ACLE macros in clang: |
| * these are normally only enabled by the -march option on the command line. |
| * By defining the macros ourselves we gain access to those declarations without |
| * requiring -march on the command line. |
| * |
| * `arm_neon.h` is included by common.h, so we put these defines |
| * at the top of this file, before any includes. |
| */ |
| #define __ARM_FEATURE_CRYPTO 1 |
| /* See: https://arm-software.github.io/acle/main/acle.html#cryptographic-extensions |
| * |
| * `__ARM_FEATURE_CRYPTO` is deprecated, but we need to continue to specify it |
| * for older compilers. |
| */ |
| #define __ARM_FEATURE_SHA2 1 |
| #define MBEDTLS_ENABLE_ARM_CRYPTO_EXTENSIONS_COMPILER_FLAG |
| #endif |
| |
| #endif /* defined(__clang__) && (__clang_major__ >= 4) */ |
| |
| /* Ensure that SIG_SETMASK is defined when -std=c99 is used. */ |
| #define _GNU_SOURCE |
| |
| #include "common.h" |
| |
| #if defined(MBEDTLS_SHA256_C) || defined(MBEDTLS_SHA224_C) |
| |
| #include "mbedtls/sha256.h" |
| #include "mbedtls/platform_util.h" |
| #include "mbedtls/error.h" |
| |
| #include <string.h> |
| |
| #include "mbedtls/platform.h" |
| |
| #if defined(MBEDTLS_ARCH_IS_ARMV8_A) |
| |
| # if defined(MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_IF_PRESENT) || \ |
| defined(MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_ONLY) |
| # if !defined(MBEDTLS_HAVE_NEON_INTRINSICS) |
| # if defined(MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_IF_PRESENT) |
| # warning "Target does not support NEON instructions" |
| # undef MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_IF_PRESENT |
| # else |
| # error "Target does not support NEON instructions" |
| # endif |
| # endif |
| # endif |
| |
| # if defined(MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_IF_PRESENT) || \ |
| defined(MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_ONLY) |
| /* *INDENT-OFF* */ |
| |
| # if !defined(__ARM_FEATURE_CRYPTO) || defined(MBEDTLS_ENABLE_ARM_CRYPTO_EXTENSIONS_COMPILER_FLAG) |
| # if defined(__ARMCOMPILER_VERSION) |
| # if __ARMCOMPILER_VERSION <= 6090000 |
| # error "Must use minimum -march=armv8-a+crypto for MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_*" |
| # endif |
| # pragma clang attribute push (__attribute__((target("sha2"))), apply_to=function) |
| # define MBEDTLS_POP_TARGET_PRAGMA |
| # elif defined(__clang__) |
| # if __clang_major__ < 4 |
| # error "A more recent Clang is required for MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_*" |
| # endif |
| # pragma clang attribute push (__attribute__((target("crypto"))), apply_to=function) |
| # define MBEDTLS_POP_TARGET_PRAGMA |
| # elif defined(__GNUC__) |
| /* FIXME: GCC 5 claims to support Armv8 Crypto Extensions, but some |
| * intrinsics are missing. Missing intrinsics could be worked around. |
| */ |
| # if __GNUC__ < 6 |
| # error "A more recent GCC is required for MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_*" |
| # else |
| # pragma GCC push_options |
| # pragma GCC target ("arch=armv8-a+crypto") |
| # define MBEDTLS_POP_TARGET_PRAGMA |
| # endif |
| # else |
| # error "Only GCC and Clang supported for MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_*" |
| # endif |
| # endif |
| /* *INDENT-ON* */ |
| |
| # endif |
| # if defined(MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_IF_PRESENT) |
| # if defined(__unix__) |
| # if defined(__linux__) |
| /* Our preferred method of detection is getauxval() */ |
| # include <sys/auxv.h> |
| /* These are not always defined via sys/auxv.h */ |
| # if !defined(HWCAP_SHA2) |
| # define HWCAP_SHA2 (1 << 6) |
| # endif |
| # if !defined(HWCAP2_SHA2) |
| # define HWCAP2_SHA2 (1 << 3) |
| # endif |
| # endif |
| /* Use SIGILL on Unix, and fall back to it on Linux */ |
| # include <signal.h> |
| # endif |
| # endif |
| #elif !defined(MBEDTLS_PLATFORM_IS_WINDOWS_ON_ARM64) |
| # undef MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_ONLY |
| # undef MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_IF_PRESENT |
| #endif |
| |
| #if defined(MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_IF_PRESENT) |
| /* |
| * Capability detection code comes early, so we can disable |
| * MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_IF_PRESENT if no detection mechanism found |
| */ |
| #if defined(MBEDTLS_ARCH_IS_ARM64) && defined(HWCAP_SHA2) |
| static int mbedtls_a64_crypto_sha256_determine_support(void) |
| { |
| return (getauxval(AT_HWCAP) & HWCAP_SHA2) ? 1 : 0; |
| } |
| #elif defined(MBEDTLS_ARCH_IS_ARM32) && defined(HWCAP2_SHA2) |
| static int mbedtls_a64_crypto_sha256_determine_support(void) |
| { |
| return (getauxval(AT_HWCAP2) & HWCAP2_SHA2) ? 1 : 0; |
| } |
| #elif defined(__APPLE__) |
| static int mbedtls_a64_crypto_sha256_determine_support(void) |
| { |
| return 1; |
| } |
| #elif defined(MBEDTLS_PLATFORM_IS_WINDOWS_ON_ARM64) |
| #define WIN32_LEAN_AND_MEAN |
| #include <Windows.h> |
| #include <processthreadsapi.h> |
| |
| static int mbedtls_a64_crypto_sha256_determine_support(void) |
| { |
| return IsProcessorFeaturePresent(PF_ARM_V8_CRYPTO_INSTRUCTIONS_AVAILABLE) ? |
| 1 : 0; |
| } |
| #elif defined(__unix__) && defined(SIG_SETMASK) |
| /* Detection with SIGILL, setjmp() and longjmp() */ |
| #include <signal.h> |
| #include <setjmp.h> |
| |
| static jmp_buf return_from_sigill; |
| |
| /* |
| * Armv8-A SHA256 support detection via SIGILL |
| */ |
| static void sigill_handler(int signal) |
| { |
| (void) signal; |
| longjmp(return_from_sigill, 1); |
| } |
| |
| static int mbedtls_a64_crypto_sha256_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 */ |
| #if defined(MBEDTLS_ARCH_IS_ARM64) |
| asm volatile ("sha256h q0, q0, v0.4s" : : : "v0"); |
| #else |
| asm volatile ("sha256h.32 q0, q0, q0" : : : "q0"); |
| #endif |
| ret = 1; |
| } |
| |
| sigaction(SIGILL, &old_action, NULL); |
| sigprocmask(SIG_SETMASK, &old_mask, NULL); |
| |
| return ret; |
| } |
| #else |
| #warning "No mechanism to detect ARMV8_CRYPTO found, using C code only" |
| #undef MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_IF_PRESENT |
| #endif /* HWCAP_SHA2, __APPLE__, __unix__ && SIG_SETMASK */ |
| |
| #endif /* MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_IF_PRESENT */ |
| |
| #if !defined(MBEDTLS_SHA256_ALT) |
| |
| #define SHA256_BLOCK_SIZE 64 |
| |
| void mbedtls_sha256_init(mbedtls_sha256_context *ctx) |
| { |
| memset(ctx, 0, sizeof(mbedtls_sha256_context)); |
| } |
| |
| void mbedtls_sha256_free(mbedtls_sha256_context *ctx) |
| { |
| if (ctx == NULL) { |
| return; |
| } |
| |
| mbedtls_platform_zeroize(ctx, sizeof(mbedtls_sha256_context)); |
| } |
| |
| void mbedtls_sha256_clone(mbedtls_sha256_context *dst, |
| const mbedtls_sha256_context *src) |
| { |
| *dst = *src; |
| } |
| |
| /* |
| * SHA-256 context setup |
| */ |
| int mbedtls_sha256_starts(mbedtls_sha256_context *ctx, int is224) |
| { |
| #if defined(MBEDTLS_SHA224_C) && defined(MBEDTLS_SHA256_C) |
| if (is224 != 0 && is224 != 1) { |
| return MBEDTLS_ERR_SHA256_BAD_INPUT_DATA; |
| } |
| #elif defined(MBEDTLS_SHA256_C) |
| if (is224 != 0) { |
| return MBEDTLS_ERR_SHA256_BAD_INPUT_DATA; |
| } |
| #else /* defined MBEDTLS_SHA224_C only */ |
| if (is224 == 0) { |
| return MBEDTLS_ERR_SHA256_BAD_INPUT_DATA; |
| } |
| #endif |
| |
| ctx->total[0] = 0; |
| ctx->total[1] = 0; |
| |
| if (is224 == 0) { |
| #if defined(MBEDTLS_SHA256_C) |
| 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; |
| #endif |
| } else { |
| #if defined(MBEDTLS_SHA224_C) |
| ctx->state[0] = 0xC1059ED8; |
| ctx->state[1] = 0x367CD507; |
| ctx->state[2] = 0x3070DD17; |
| ctx->state[3] = 0xF70E5939; |
| ctx->state[4] = 0xFFC00B31; |
| ctx->state[5] = 0x68581511; |
| ctx->state[6] = 0x64F98FA7; |
| ctx->state[7] = 0xBEFA4FA4; |
| #endif |
| } |
| |
| #if defined(MBEDTLS_SHA224_C) |
| ctx->is224 = is224; |
| #endif |
| |
| return 0; |
| } |
| |
| #if !defined(MBEDTLS_SHA256_PROCESS_ALT) |
| static const uint32_t K[] = |
| { |
| 0x428A2F98, 0x71374491, 0xB5C0FBCF, 0xE9B5DBA5, |
| 0x3956C25B, 0x59F111F1, 0x923F82A4, 0xAB1C5ED5, |
| 0xD807AA98, 0x12835B01, 0x243185BE, 0x550C7DC3, |
| 0x72BE5D74, 0x80DEB1FE, 0x9BDC06A7, 0xC19BF174, |
| 0xE49B69C1, 0xEFBE4786, 0x0FC19DC6, 0x240CA1CC, |
| 0x2DE92C6F, 0x4A7484AA, 0x5CB0A9DC, 0x76F988DA, |
| 0x983E5152, 0xA831C66D, 0xB00327C8, 0xBF597FC7, |
| 0xC6E00BF3, 0xD5A79147, 0x06CA6351, 0x14292967, |
| 0x27B70A85, 0x2E1B2138, 0x4D2C6DFC, 0x53380D13, |
| 0x650A7354, 0x766A0ABB, 0x81C2C92E, 0x92722C85, |
| 0xA2BFE8A1, 0xA81A664B, 0xC24B8B70, 0xC76C51A3, |
| 0xD192E819, 0xD6990624, 0xF40E3585, 0x106AA070, |
| 0x19A4C116, 0x1E376C08, 0x2748774C, 0x34B0BCB5, |
| 0x391C0CB3, 0x4ED8AA4A, 0x5B9CCA4F, 0x682E6FF3, |
| 0x748F82EE, 0x78A5636F, 0x84C87814, 0x8CC70208, |
| 0x90BEFFFA, 0xA4506CEB, 0xBEF9A3F7, 0xC67178F2, |
| }; |
| |
| #endif |
| |
| #if defined(MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_IF_PRESENT) || \ |
| defined(MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_ONLY) |
| |
| #if defined(MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_ONLY) |
| # define mbedtls_internal_sha256_process_many_a64_crypto mbedtls_internal_sha256_process_many |
| # define mbedtls_internal_sha256_process_a64_crypto mbedtls_internal_sha256_process |
| #endif |
| |
| static size_t mbedtls_internal_sha256_process_many_a64_crypto( |
| mbedtls_sha256_context *ctx, const uint8_t *msg, size_t len) |
| { |
| uint32x4_t abcd = vld1q_u32(&ctx->state[0]); |
| uint32x4_t efgh = vld1q_u32(&ctx->state[4]); |
| |
| size_t processed = 0; |
| |
| for (; |
| len >= SHA256_BLOCK_SIZE; |
| processed += SHA256_BLOCK_SIZE, |
| msg += SHA256_BLOCK_SIZE, |
| len -= SHA256_BLOCK_SIZE) { |
| uint32x4_t tmp, abcd_prev; |
| |
| uint32x4_t abcd_orig = abcd; |
| uint32x4_t efgh_orig = efgh; |
| |
| uint32x4_t sched0 = vreinterpretq_u32_u8(vld1q_u8(msg + 16 * 0)); |
| uint32x4_t sched1 = vreinterpretq_u32_u8(vld1q_u8(msg + 16 * 1)); |
| uint32x4_t sched2 = vreinterpretq_u32_u8(vld1q_u8(msg + 16 * 2)); |
| uint32x4_t sched3 = vreinterpretq_u32_u8(vld1q_u8(msg + 16 * 3)); |
| |
| #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ /* Will be true if not defined */ |
| /* Untested on BE */ |
| sched0 = vreinterpretq_u32_u8(vrev32q_u8(vreinterpretq_u8_u32(sched0))); |
| sched1 = vreinterpretq_u32_u8(vrev32q_u8(vreinterpretq_u8_u32(sched1))); |
| sched2 = vreinterpretq_u32_u8(vrev32q_u8(vreinterpretq_u8_u32(sched2))); |
| sched3 = vreinterpretq_u32_u8(vrev32q_u8(vreinterpretq_u8_u32(sched3))); |
| #endif |
| |
| /* Rounds 0 to 3 */ |
| tmp = vaddq_u32(sched0, vld1q_u32(&K[0])); |
| abcd_prev = abcd; |
| abcd = vsha256hq_u32(abcd_prev, efgh, tmp); |
| efgh = vsha256h2q_u32(efgh, abcd_prev, tmp); |
| |
| /* Rounds 4 to 7 */ |
| tmp = vaddq_u32(sched1, vld1q_u32(&K[4])); |
| abcd_prev = abcd; |
| abcd = vsha256hq_u32(abcd_prev, efgh, tmp); |
| efgh = vsha256h2q_u32(efgh, abcd_prev, tmp); |
| |
| /* Rounds 8 to 11 */ |
| tmp = vaddq_u32(sched2, vld1q_u32(&K[8])); |
| abcd_prev = abcd; |
| abcd = vsha256hq_u32(abcd_prev, efgh, tmp); |
| efgh = vsha256h2q_u32(efgh, abcd_prev, tmp); |
| |
| /* Rounds 12 to 15 */ |
| tmp = vaddq_u32(sched3, vld1q_u32(&K[12])); |
| abcd_prev = abcd; |
| abcd = vsha256hq_u32(abcd_prev, efgh, tmp); |
| efgh = vsha256h2q_u32(efgh, abcd_prev, tmp); |
| |
| for (int t = 16; t < 64; t += 16) { |
| /* Rounds t to t + 3 */ |
| sched0 = vsha256su1q_u32(vsha256su0q_u32(sched0, sched1), sched2, sched3); |
| tmp = vaddq_u32(sched0, vld1q_u32(&K[t])); |
| abcd_prev = abcd; |
| abcd = vsha256hq_u32(abcd_prev, efgh, tmp); |
| efgh = vsha256h2q_u32(efgh, abcd_prev, tmp); |
| |
| /* Rounds t + 4 to t + 7 */ |
| sched1 = vsha256su1q_u32(vsha256su0q_u32(sched1, sched2), sched3, sched0); |
| tmp = vaddq_u32(sched1, vld1q_u32(&K[t + 4])); |
| abcd_prev = abcd; |
| abcd = vsha256hq_u32(abcd_prev, efgh, tmp); |
| efgh = vsha256h2q_u32(efgh, abcd_prev, tmp); |
| |
| /* Rounds t + 8 to t + 11 */ |
| sched2 = vsha256su1q_u32(vsha256su0q_u32(sched2, sched3), sched0, sched1); |
| tmp = vaddq_u32(sched2, vld1q_u32(&K[t + 8])); |
| abcd_prev = abcd; |
| abcd = vsha256hq_u32(abcd_prev, efgh, tmp); |
| efgh = vsha256h2q_u32(efgh, abcd_prev, tmp); |
| |
| /* Rounds t + 12 to t + 15 */ |
| sched3 = vsha256su1q_u32(vsha256su0q_u32(sched3, sched0), sched1, sched2); |
| tmp = vaddq_u32(sched3, vld1q_u32(&K[t + 12])); |
| abcd_prev = abcd; |
| abcd = vsha256hq_u32(abcd_prev, efgh, tmp); |
| efgh = vsha256h2q_u32(efgh, abcd_prev, tmp); |
| } |
| |
| abcd = vaddq_u32(abcd, abcd_orig); |
| efgh = vaddq_u32(efgh, efgh_orig); |
| } |
| |
| vst1q_u32(&ctx->state[0], abcd); |
| vst1q_u32(&ctx->state[4], efgh); |
| |
| return processed; |
| } |
| |
| #if defined(MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_IF_PRESENT) |
| /* |
| * This function is for internal use only if we are building both C and Armv8-A |
| * versions, otherwise it is renamed to be the public mbedtls_internal_sha256_process() |
| */ |
| static |
| #endif |
| int mbedtls_internal_sha256_process_a64_crypto(mbedtls_sha256_context *ctx, |
| const unsigned char data[SHA256_BLOCK_SIZE]) |
| { |
| return (mbedtls_internal_sha256_process_many_a64_crypto(ctx, data, |
| SHA256_BLOCK_SIZE) == |
| SHA256_BLOCK_SIZE) ? 0 : -1; |
| } |
| |
| #endif /* MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_IF_PRESENT || MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_ONLY */ |
| |
| #if defined(MBEDTLS_POP_TARGET_PRAGMA) |
| #if defined(__clang__) |
| #pragma clang attribute pop |
| #elif defined(__GNUC__) |
| #pragma GCC pop_options |
| #endif |
| #undef MBEDTLS_POP_TARGET_PRAGMA |
| #endif |
| |
| #if !defined(MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_IF_PRESENT) |
| #define mbedtls_internal_sha256_process_many_c mbedtls_internal_sha256_process_many |
| #define mbedtls_internal_sha256_process_c mbedtls_internal_sha256_process |
| #endif |
| |
| |
| #if !defined(MBEDTLS_SHA256_PROCESS_ALT) && \ |
| !defined(MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_ONLY) |
| |
| #define SHR(x, n) (((x) & 0xFFFFFFFF) >> (n)) |
| #define ROTR(x, n) (SHR(x, n) | ((x) << (32 - (n)))) |
| |
| #define S0(x) (ROTR(x, 7) ^ ROTR(x, 18) ^ SHR(x, 3)) |
| #define S1(x) (ROTR(x, 17) ^ ROTR(x, 19) ^ SHR(x, 10)) |
| |
| #define S2(x) (ROTR(x, 2) ^ ROTR(x, 13) ^ ROTR(x, 22)) |
| #define S3(x) (ROTR(x, 6) ^ ROTR(x, 11) ^ ROTR(x, 25)) |
| |
| #define F0(x, y, z) (((x) & (y)) | ((z) & ((x) | (y)))) |
| #define F1(x, y, z) ((z) ^ ((x) & ((y) ^ (z)))) |
| |
| #define R(t) \ |
| ( \ |
| local.W[t] = S1(local.W[(t) - 2]) + local.W[(t) - 7] + \ |
| S0(local.W[(t) - 15]) + local.W[(t) - 16] \ |
| ) |
| |
| #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) |
| |
| #if defined(MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_IF_PRESENT) |
| /* |
| * This function is for internal use only if we are building both C and Armv8 |
| * versions, otherwise it is renamed to be the public mbedtls_internal_sha256_process() |
| */ |
| static |
| #endif |
| int mbedtls_internal_sha256_process_c(mbedtls_sha256_context *ctx, |
| const unsigned char data[SHA256_BLOCK_SIZE]) |
| { |
| struct { |
| uint32_t temp1, temp2, W[64]; |
| uint32_t A[8]; |
| } local; |
| |
| unsigned int i; |
| |
| for (i = 0; i < 8; i++) { |
| local.A[i] = ctx->state[i]; |
| } |
| |
| #if defined(MBEDTLS_SHA256_SMALLER) |
| for (i = 0; i < 64; i++) { |
| if (i < 16) { |
| local.W[i] = MBEDTLS_GET_UINT32_BE(data, 4 * i); |
| } else { |
| R(i); |
| } |
| |
| 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_SHA256_SMALLER */ |
| for (i = 0; i < 16; i++) { |
| local.W[i] = MBEDTLS_GET_UINT32_BE(data, 4 * i); |
| } |
| |
| for (i = 0; i < 16; i += 8) { |
| 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+0], K[i+0]); |
| 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+1], K[i+1]); |
| 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+2], K[i+2]); |
| 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+3], K[i+3]); |
| 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+4], K[i+4]); |
| 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+5], K[i+5]); |
| 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+6], K[i+6]); |
| 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+7], K[i+7]); |
| } |
| |
| for (i = 16; i < 64; i += 8) { |
| 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], R(i+0), K[i+0]); |
| 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], R(i+1), K[i+1]); |
| 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], R(i+2), K[i+2]); |
| 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], R(i+3), K[i+3]); |
| 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], R(i+4), K[i+4]); |
| 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], R(i+5), K[i+5]); |
| 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], R(i+6), K[i+6]); |
| 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], R(i+7), K[i+7]); |
| } |
| #endif /* MBEDTLS_SHA256_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_SHA256_PROCESS_ALT && !MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_ONLY */ |
| |
| |
| #if !defined(MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_ONLY) |
| |
| static size_t mbedtls_internal_sha256_process_many_c( |
| mbedtls_sha256_context *ctx, const uint8_t *data, size_t len) |
| { |
| size_t processed = 0; |
| |
| while (len >= SHA256_BLOCK_SIZE) { |
| if (mbedtls_internal_sha256_process_c(ctx, data) != 0) { |
| return 0; |
| } |
| |
| data += SHA256_BLOCK_SIZE; |
| len -= SHA256_BLOCK_SIZE; |
| |
| processed += SHA256_BLOCK_SIZE; |
| } |
| |
| return processed; |
| } |
| |
| #endif /* !MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_ONLY */ |
| |
| |
| #if defined(MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_IF_PRESENT) |
| |
| static int mbedtls_a64_crypto_sha256_has_support(void) |
| { |
| static int done = 0; |
| static int supported = 0; |
| |
| if (!done) { |
| supported = mbedtls_a64_crypto_sha256_determine_support(); |
| done = 1; |
| } |
| |
| return supported; |
| } |
| |
| static size_t mbedtls_internal_sha256_process_many(mbedtls_sha256_context *ctx, |
| const uint8_t *msg, size_t len) |
| { |
| if (mbedtls_a64_crypto_sha256_has_support()) { |
| return mbedtls_internal_sha256_process_many_a64_crypto(ctx, msg, len); |
| } else { |
| return mbedtls_internal_sha256_process_many_c(ctx, msg, len); |
| } |
| } |
| |
| int mbedtls_internal_sha256_process(mbedtls_sha256_context *ctx, |
| const unsigned char data[SHA256_BLOCK_SIZE]) |
| { |
| if (mbedtls_a64_crypto_sha256_has_support()) { |
| return mbedtls_internal_sha256_process_a64_crypto(ctx, data); |
| } else { |
| return mbedtls_internal_sha256_process_c(ctx, data); |
| } |
| } |
| |
| #endif /* MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_IF_PRESENT */ |
| |
| |
| /* |
| * SHA-256 process buffer |
| */ |
| int mbedtls_sha256_update(mbedtls_sha256_context *ctx, |
| const unsigned char *input, |
| size_t ilen) |
| { |
| int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; |
| size_t fill; |
| uint32_t left; |
| |
| if (ilen == 0) { |
| return 0; |
| } |
| |
| left = ctx->total[0] & 0x3F; |
| fill = SHA256_BLOCK_SIZE - left; |
| |
| ctx->total[0] += (uint32_t) ilen; |
| ctx->total[0] &= 0xFFFFFFFF; |
| |
| if (ctx->total[0] < (uint32_t) ilen) { |
| ctx->total[1]++; |
| } |
| |
| if (left && ilen >= fill) { |
| memcpy((void *) (ctx->buffer + left), input, fill); |
| |
| if ((ret = mbedtls_internal_sha256_process(ctx, ctx->buffer)) != 0) { |
| return ret; |
| } |
| |
| input += fill; |
| ilen -= fill; |
| left = 0; |
| } |
| |
| while (ilen >= SHA256_BLOCK_SIZE) { |
| size_t processed = |
| mbedtls_internal_sha256_process_many(ctx, input, ilen); |
| if (processed < SHA256_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-256 final digest |
| */ |
| int mbedtls_sha256_finish(mbedtls_sha256_context *ctx, |
| unsigned char *output) |
| { |
| int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; |
| uint32_t used; |
| uint32_t high, low; |
| int truncated = 0; |
| |
| /* |
| * Add padding: 0x80 then 0x00 until 8 bytes remain for the length |
| */ |
| used = ctx->total[0] & 0x3F; |
| |
| ctx->buffer[used++] = 0x80; |
| |
| if (used <= 56) { |
| /* Enough room for padding + length in current block */ |
| memset(ctx->buffer + used, 0, 56 - used); |
| } else { |
| /* We'll need an extra block */ |
| memset(ctx->buffer + used, 0, SHA256_BLOCK_SIZE - used); |
| |
| if ((ret = mbedtls_internal_sha256_process(ctx, ctx->buffer)) != 0) { |
| goto exit; |
| } |
| |
| memset(ctx->buffer, 0, 56); |
| } |
| |
| /* |
| * Add message length |
| */ |
| high = (ctx->total[0] >> 29) |
| | (ctx->total[1] << 3); |
| low = (ctx->total[0] << 3); |
| |
| MBEDTLS_PUT_UINT32_BE(high, ctx->buffer, 56); |
| MBEDTLS_PUT_UINT32_BE(low, ctx->buffer, 60); |
| |
| if ((ret = mbedtls_internal_sha256_process(ctx, ctx->buffer)) != 0) { |
| goto exit; |
| } |
| |
| /* |
| * Output final state |
| */ |
| MBEDTLS_PUT_UINT32_BE(ctx->state[0], output, 0); |
| MBEDTLS_PUT_UINT32_BE(ctx->state[1], output, 4); |
| MBEDTLS_PUT_UINT32_BE(ctx->state[2], output, 8); |
| MBEDTLS_PUT_UINT32_BE(ctx->state[3], output, 12); |
| MBEDTLS_PUT_UINT32_BE(ctx->state[4], output, 16); |
| MBEDTLS_PUT_UINT32_BE(ctx->state[5], output, 20); |
| MBEDTLS_PUT_UINT32_BE(ctx->state[6], output, 24); |
| |
| #if defined(MBEDTLS_SHA224_C) |
| truncated = ctx->is224; |
| #endif |
| if (!truncated) { |
| MBEDTLS_PUT_UINT32_BE(ctx->state[7], output, 28); |
| } |
| |
| ret = 0; |
| |
| exit: |
| mbedtls_sha256_free(ctx); |
| return ret; |
| } |
| |
| #endif /* !MBEDTLS_SHA256_ALT */ |
| |
| /* |
| * output = SHA-256( input buffer ) |
| */ |
| int mbedtls_sha256(const unsigned char *input, |
| size_t ilen, |
| unsigned char *output, |
| int is224) |
| { |
| int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; |
| mbedtls_sha256_context ctx; |
| |
| #if defined(MBEDTLS_SHA224_C) && defined(MBEDTLS_SHA256_C) |
| if (is224 != 0 && is224 != 1) { |
| return MBEDTLS_ERR_SHA256_BAD_INPUT_DATA; |
| } |
| #elif defined(MBEDTLS_SHA256_C) |
| if (is224 != 0) { |
| return MBEDTLS_ERR_SHA256_BAD_INPUT_DATA; |
| } |
| #else /* defined MBEDTLS_SHA224_C only */ |
| if (is224 == 0) { |
| return MBEDTLS_ERR_SHA256_BAD_INPUT_DATA; |
| } |
| #endif |
| |
| mbedtls_sha256_init(&ctx); |
| |
| if ((ret = mbedtls_sha256_starts(&ctx, is224)) != 0) { |
| goto exit; |
| } |
| |
| if ((ret = mbedtls_sha256_update(&ctx, input, ilen)) != 0) { |
| goto exit; |
| } |
| |
| if ((ret = mbedtls_sha256_finish(&ctx, output)) != 0) { |
| goto exit; |
| } |
| |
| exit: |
| mbedtls_sha256_free(&ctx); |
| |
| return ret; |
| } |
| |
| #if defined(MBEDTLS_SELF_TEST) |
| /* |
| * FIPS-180-2 test vectors |
| */ |
| static const unsigned char sha_test_buf[3][57] = |
| { |
| { "abc" }, |
| { "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq" }, |
| { "" } |
| }; |
| |
| static const size_t sha_test_buflen[3] = |
| { |
| 3, 56, 1000 |
| }; |
| |
| typedef const unsigned char (sha_test_sum_t)[32]; |
| |
| /* |
| * SHA-224 test vectors |
| */ |
| #if defined(MBEDTLS_SHA224_C) |
| static sha_test_sum_t sha224_test_sum[] = |
| { |
| { 0x23, 0x09, 0x7D, 0x22, 0x34, 0x05, 0xD8, 0x22, |
| 0x86, 0x42, 0xA4, 0x77, 0xBD, 0xA2, 0x55, 0xB3, |
| 0x2A, 0xAD, 0xBC, 0xE4, 0xBD, 0xA0, 0xB3, 0xF7, |
| 0xE3, 0x6C, 0x9D, 0xA7 }, |
| { 0x75, 0x38, 0x8B, 0x16, 0x51, 0x27, 0x76, 0xCC, |
| 0x5D, 0xBA, 0x5D, 0xA1, 0xFD, 0x89, 0x01, 0x50, |
| 0xB0, 0xC6, 0x45, 0x5C, 0xB4, 0xF5, 0x8B, 0x19, |
| 0x52, 0x52, 0x25, 0x25 }, |
| { 0x20, 0x79, 0x46, 0x55, 0x98, 0x0C, 0x91, 0xD8, |
| 0xBB, 0xB4, 0xC1, 0xEA, 0x97, 0x61, 0x8A, 0x4B, |
| 0xF0, 0x3F, 0x42, 0x58, 0x19, 0x48, 0xB2, 0xEE, |
| 0x4E, 0xE7, 0xAD, 0x67 } |
| }; |
| #endif |
| |
| /* |
| * SHA-256 test vectors |
| */ |
| #if defined(MBEDTLS_SHA256_C) |
| static sha_test_sum_t sha256_test_sum[] = |
| { |
| { 0xBA, 0x78, 0x16, 0xBF, 0x8F, 0x01, 0xCF, 0xEA, |
| 0x41, 0x41, 0x40, 0xDE, 0x5D, 0xAE, 0x22, 0x23, |
| 0xB0, 0x03, 0x61, 0xA3, 0x96, 0x17, 0x7A, 0x9C, |
| 0xB4, 0x10, 0xFF, 0x61, 0xF2, 0x00, 0x15, 0xAD }, |
| { 0x24, 0x8D, 0x6A, 0x61, 0xD2, 0x06, 0x38, 0xB8, |
| 0xE5, 0xC0, 0x26, 0x93, 0x0C, 0x3E, 0x60, 0x39, |
| 0xA3, 0x3C, 0xE4, 0x59, 0x64, 0xFF, 0x21, 0x67, |
| 0xF6, 0xEC, 0xED, 0xD4, 0x19, 0xDB, 0x06, 0xC1 }, |
| { 0xCD, 0xC7, 0x6E, 0x5C, 0x99, 0x14, 0xFB, 0x92, |
| 0x81, 0xA1, 0xC7, 0xE2, 0x84, 0xD7, 0x3E, 0x67, |
| 0xF1, 0x80, 0x9A, 0x48, 0xA4, 0x97, 0x20, 0x0E, |
| 0x04, 0x6D, 0x39, 0xCC, 0xC7, 0x11, 0x2C, 0xD0 } |
| }; |
| #endif |
| |
| /* |
| * Checkup routine |
| */ |
| static int mbedtls_sha256_common_self_test(int verbose, int is224) |
| { |
| int i, buflen, ret = 0; |
| unsigned char *buf; |
| unsigned char sha256sum[32]; |
| mbedtls_sha256_context ctx; |
| |
| #if defined(MBEDTLS_SHA224_C) && defined(MBEDTLS_SHA256_C) |
| sha_test_sum_t *sha_test_sum = (is224) ? sha224_test_sum : sha256_test_sum; |
| #elif defined(MBEDTLS_SHA256_C) |
| sha_test_sum_t *sha_test_sum = sha256_test_sum; |
| #else |
| sha_test_sum_t *sha_test_sum = sha224_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_sha256_init(&ctx); |
| |
| for (i = 0; i < 3; i++) { |
| if (verbose != 0) { |
| mbedtls_printf(" SHA-%d test #%d: ", 256 - is224 * 32, i + 1); |
| } |
| |
| if ((ret = mbedtls_sha256_starts(&ctx, is224)) != 0) { |
| goto fail; |
| } |
| |
| if (i == 2) { |
| memset(buf, 'a', buflen = 1000); |
| |
| for (int j = 0; j < 1000; j++) { |
| ret = mbedtls_sha256_update(&ctx, buf, buflen); |
| if (ret != 0) { |
| goto fail; |
| } |
| } |
| |
| } else { |
| ret = mbedtls_sha256_update(&ctx, sha_test_buf[i], |
| sha_test_buflen[i]); |
| if (ret != 0) { |
| goto fail; |
| } |
| } |
| |
| if ((ret = mbedtls_sha256_finish(&ctx, sha256sum)) != 0) { |
| goto fail; |
| } |
| |
| |
| if (memcmp(sha256sum, sha_test_sum[i], 32 - is224 * 4) != 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_sha256_free(&ctx); |
| mbedtls_free(buf); |
| |
| return ret; |
| } |
| |
| #if defined(MBEDTLS_SHA256_C) |
| int mbedtls_sha256_self_test(int verbose) |
| { |
| return mbedtls_sha256_common_self_test(verbose, 0); |
| } |
| #endif /* MBEDTLS_SHA256_C */ |
| |
| #if defined(MBEDTLS_SHA224_C) |
| int mbedtls_sha224_self_test(int verbose) |
| { |
| return mbedtls_sha256_common_self_test(verbose, 1); |
| } |
| #endif /* MBEDTLS_SHA224_C */ |
| |
| #endif /* MBEDTLS_SELF_TEST */ |
| |
| #endif /* MBEDTLS_SHA256_C || MBEDTLS_SHA224_C */ |
