mirror of
https://github.com/jart/cosmopolitan.git
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fa20edc44d
- Remove most __ASSEMBLER__ __LINKER__ ifdefs - Rename libc/intrin/bits.h to libc/serialize.h - Block pthread cancelation in fchmodat() polyfill - Remove `clang-format off` statements in third_party
457 lines
17 KiB
C
457 lines
17 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:4;tab-width:4;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright The Mbed TLS Contributors │
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│ │
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│ Licensed under the Apache License, Version 2.0 (the "License"); │
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│ you may not use this file except in compliance with the License. │
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│ You may obtain a copy of the License at │
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│ │
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│ http://www.apache.org/licenses/LICENSE-2.0 │
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│ │
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│ Unless required by applicable law or agreed to in writing, software │
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│ distributed under the License is distributed on an "AS IS" BASIS, │
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│ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. │
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│ See the License for the specific language governing permissions and │
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│ limitations under the License. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "third_party/mbedtls/sha512.h"
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#include "libc/intrin/asan.internal.h"
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#include "libc/literal.h"
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#include "libc/macros.internal.h"
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#include "libc/nexgen32e/nexgen32e.h"
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#include "libc/nexgen32e/x86feature.h"
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#include "libc/str/str.h"
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#include "third_party/mbedtls/chk.h"
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#include "third_party/mbedtls/common.h"
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#include "third_party/mbedtls/endian.h"
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#include "third_party/mbedtls/error.h"
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#include "third_party/mbedtls/md.h"
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#include "third_party/mbedtls/platform.h"
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asm(".ident\t\"\\n\\n\
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Mbed TLS (Apache 2.0)\\n\
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Copyright ARM Limited\\n\
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Copyright Mbed TLS Contributors\"");
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asm(".include \"libc/disclaimer.inc\"");
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/**
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* @fileoverview FIPS-180-2 compliant SHA-384/512 implementation
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*
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* The SHA-512 Secure Hash Standard was published by NIST in 2002.
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*
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* @see http://csrc.nist.gov/publications/fips/fips180-2/fips180-2.pdf
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*/
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void sha512_transform_rorx(mbedtls_sha512_context *, const uint8_t *, int);
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#if defined(MBEDTLS_SHA512_C)
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#define SHA512_VALIDATE_RET(cond) \
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MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_SHA512_BAD_INPUT_DATA )
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#define SHA512_VALIDATE(cond) MBEDTLS_INTERNAL_VALIDATE( cond )
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#if !defined(MBEDTLS_SHA512_ALT)
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#define sha512_put_uint64_be PUT_UINT64_BE
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/**
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* \brief This function clones the state of a SHA-512 context.
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*
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* \param dst The destination context. This must be initialized.
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* \param src The context to clone. This must be initialized.
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*/
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void mbedtls_sha512_clone( mbedtls_sha512_context *dst,
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const mbedtls_sha512_context *src )
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{
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SHA512_VALIDATE( dst );
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SHA512_VALIDATE( src );
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*dst = *src;
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}
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int mbedtls_sha512_starts_384( mbedtls_sha512_context *ctx )
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{
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SHA512_VALIDATE_RET( ctx );
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ctx->total[0] = 0;
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ctx->total[1] = 0;
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ctx->state[0] = 0xCBBB9D5DC1059ED8;
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ctx->state[1] = 0x629A292A367CD507;
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ctx->state[2] = 0x9159015A3070DD17;
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ctx->state[3] = 0x152FECD8F70E5939;
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ctx->state[4] = 0x67332667FFC00B31;
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ctx->state[5] = 0x8EB44A8768581511;
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ctx->state[6] = 0xDB0C2E0D64F98FA7;
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ctx->state[7] = 0x47B5481DBEFA4FA4;
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ctx->is384 = true;
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return( 0 );
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}
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int mbedtls_sha512_starts_512( mbedtls_sha512_context *ctx )
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{
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SHA512_VALIDATE_RET( ctx );
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ctx->total[0] = 0;
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ctx->total[1] = 0;
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ctx->state[0] = 0x6A09E667F3BCC908;
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ctx->state[1] = 0xBB67AE8584CAA73B;
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ctx->state[2] = 0x3C6EF372FE94F82B;
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ctx->state[3] = 0xA54FF53A5F1D36F1;
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ctx->state[4] = 0x510E527FADE682D1;
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ctx->state[5] = 0x9B05688C2B3E6C1F;
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ctx->state[6] = 0x1F83D9ABFB41BD6B;
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ctx->state[7] = 0x5BE0CD19137E2179;
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ctx->is384 = false;
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return( 0 );
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}
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/**
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* \brief This function starts a SHA-384 or SHA-512 checksum
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* calculation.
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*
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* \param ctx The SHA-512 context to use. This must be initialized.
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* \param is384 Determines which function to use. This must be
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* either \c 0 for SHA-512, or \c 1 for SHA-384.
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*
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* \note When \c MBEDTLS_SHA512_NO_SHA384 is defined, \p is384 must
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* be \c 0, or the function will return
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* #MBEDTLS_ERR_SHA512_BAD_INPUT_DATA.
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*
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* \return \c 0 on success.
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* \return A negative error code on failure.
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*/
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int mbedtls_sha512_starts_ret( mbedtls_sha512_context *ctx, int is384 )
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{
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SHA512_VALIDATE_RET( ctx );
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SHA512_VALIDATE_RET( is384 == 0 || is384 == 1 );
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if( !is384 )
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return mbedtls_sha512_starts_512( ctx );
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else
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return mbedtls_sha512_starts_384( ctx );
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}
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#if !defined(MBEDTLS_SHA512_PROCESS_ALT)
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#define SHR(x,n) ((x) >> (n))
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#define ROR(x,n) (SHR((x),(n)) | ((x) << (64 - (n))))
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#define S0(x) (ROR(x, 1) ^ ROR(x, 8) ^ SHR(x, 7))
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#define S1(x) (ROR(x,19) ^ ROR(x,61) ^ SHR(x, 6))
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#define S2(x) (ROR(x,28) ^ ROR(x,34) ^ ROR(x,39))
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#define S3(x) (ROR(x,14) ^ ROR(x,18) ^ ROR(x,41))
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#define F0(x,y,z) (((x) & (y)) | ((z) & ((x) | (y))))
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#define F1(x,y,z) ((z) ^ ((x) & ((y) ^ (z))))
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#define P(a,b,c,d,e,f,g,h,x,k) \
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do \
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{ \
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local.temp1 = (h) + S3(e) + F1((e),(f),(g)) + (k) + (x); \
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local.temp2 = S2(a) + F0((a),(b),(c)); \
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(d) += local.temp1; (h) = local.temp1 + local.temp2; \
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} while( 0 )
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/**
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* \brief This function processes a single data block within
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* the ongoing SHA-512 computation.
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* This function is for internal use only.
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*
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* \param ctx The SHA-512 context. This must be initialized.
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* \param data The buffer holding one block of data. This
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* must be a readable buffer of length \c 128 Bytes.
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*
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* \return \c 0 on success.
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* \return A negative error code on failure.
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*/
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int mbedtls_internal_sha512_process( mbedtls_sha512_context *ctx,
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const unsigned char data[128] )
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{
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int i;
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struct
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{
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uint64_t temp1, temp2, W[80];
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uint64_t A[8];
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} local;
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SHA512_VALIDATE_RET( ctx != NULL );
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SHA512_VALIDATE_RET( (const unsigned char *)data != NULL );
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if( !IsTiny() && X86_HAVE(AVX2) )
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{
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if (IsAsan())
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__asan_verify(data, 128);
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sha512_transform_rorx(ctx, data, 1);
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return 0;
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}
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for( i = 0; i < 8; i++ )
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local.A[i] = ctx->state[i];
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#if defined(MBEDTLS_SHA512_SMALLER)
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for( i = 0; i < 80; i++ )
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{
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if( i < 16 )
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{
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GET_UINT64_BE( local.W[i], data, i << 3 );
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}
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else
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{
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local.W[i] = S1(local.W[i - 2]) + local.W[i - 7] +
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S0(local.W[i - 15]) + local.W[i - 16];
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}
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P( local.A[0], local.A[1], local.A[2], local.A[3], local.A[4],
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local.A[5], local.A[6], local.A[7], local.W[i], kSha512[i] );
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local.temp1 = local.A[7];
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local.A[7] = local.A[6];
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local.A[6] = local.A[5];
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local.A[5] = local.A[4];
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local.A[4] = local.A[3];
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local.A[3] = local.A[2];
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local.A[2] = local.A[1];
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local.A[1] = local.A[0];
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local.A[0] = local.temp1;
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}
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#else /* MBEDTLS_SHA512_SMALLER */
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for( i = 0; i < 16; i++ )
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{
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GET_UINT64_BE( local.W[i], data, i << 3 );
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}
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for( ; i < 80; i++ )
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{
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local.W[i] = S1(local.W[i - 2]) + local.W[i - 7] +
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S0(local.W[i - 15]) + local.W[i - 16];
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}
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i = 0;
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do
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{
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P( local.A[0], local.A[1], local.A[2], local.A[3], local.A[4],
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local.A[5], local.A[6], local.A[7], local.W[i], kSha512[i] ); i++;
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P( local.A[7], local.A[0], local.A[1], local.A[2], local.A[3],
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local.A[4], local.A[5], local.A[6], local.W[i], kSha512[i] ); i++;
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P( local.A[6], local.A[7], local.A[0], local.A[1], local.A[2],
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local.A[3], local.A[4], local.A[5], local.W[i], kSha512[i] ); i++;
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P( local.A[5], local.A[6], local.A[7], local.A[0], local.A[1],
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local.A[2], local.A[3], local.A[4], local.W[i], kSha512[i] ); i++;
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P( local.A[4], local.A[5], local.A[6], local.A[7], local.A[0],
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local.A[1], local.A[2], local.A[3], local.W[i], kSha512[i] ); i++;
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P( local.A[3], local.A[4], local.A[5], local.A[6], local.A[7],
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local.A[0], local.A[1], local.A[2], local.W[i], kSha512[i] ); i++;
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P( local.A[2], local.A[3], local.A[4], local.A[5], local.A[6],
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local.A[7], local.A[0], local.A[1], local.W[i], kSha512[i] ); i++;
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P( local.A[1], local.A[2], local.A[3], local.A[4], local.A[5],
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local.A[6], local.A[7], local.A[0], local.W[i], kSha512[i] ); i++;
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}
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while( i < 80 );
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#endif /* MBEDTLS_SHA512_SMALLER */
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for( i = 0; i < 8; i++ )
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ctx->state[i] += local.A[i];
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/* Zeroise buffers and variables to clear sensitive data from memory. */
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mbedtls_platform_zeroize( &local, sizeof( local ) );
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return( 0 );
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}
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#endif /* !MBEDTLS_SHA512_PROCESS_ALT */
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/**
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* \brief This function feeds an input buffer into an ongoing
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* SHA-512 checksum calculation.
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*
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* \param ctx The SHA-512 context. This must be initialized
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* and have a hash operation started.
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* \param input The buffer holding the input data. This must
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* be a readable buffer of length \p ilen Bytes.
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* \param ilen The length of the input data in Bytes.
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*
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* \return \c 0 on success.
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* \return A negative error code on failure.
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*/
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int mbedtls_sha512_update_ret( mbedtls_sha512_context *ctx,
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const unsigned char *input,
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size_t ilen )
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{
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int ret = MBEDTLS_ERR_THIS_CORRUPTION;
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size_t fill;
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unsigned int left;
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SHA512_VALIDATE_RET( ctx != NULL );
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SHA512_VALIDATE_RET( ilen == 0 || input != NULL );
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if( ilen == 0 )
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return( 0 );
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left = (unsigned int) (ctx->total[0] & 0x7F);
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fill = 128 - left;
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ctx->total[0] += (uint64_t) ilen;
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if( ctx->total[0] < (uint64_t) ilen )
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ctx->total[1]++;
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if( left && ilen >= fill )
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{
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memcpy( (void *) (ctx->buffer + left), input, fill );
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if( ( ret = mbedtls_internal_sha512_process( ctx, ctx->buffer ) ) != 0 )
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return( ret );
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input += fill;
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ilen -= fill;
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left = 0;
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}
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if (!IsTiny() && ilen >= 128 && X86_HAVE(AVX2)) {
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if (IsAsan()) __asan_verify(input, ilen / 128 * 128);
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sha512_transform_rorx(ctx, input, ilen / 128);
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input += ROUNDDOWN(ilen, 128);
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ilen -= ROUNDDOWN(ilen, 128);
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}
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while( ilen >= 128 )
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{
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if( ( ret = mbedtls_internal_sha512_process( ctx, input ) ) != 0 )
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return( ret );
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input += 128;
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ilen -= 128;
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}
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if( ilen > 0 )
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memcpy( (void *) (ctx->buffer + left), input, ilen );
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return( 0 );
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}
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/**
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* \brief This function finishes the SHA-512 operation, and writes
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* the result to the output buffer.
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*
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* \param ctx The SHA-512 context. This must be initialized
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* and have a hash operation started.
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* \param output The SHA-384 or SHA-512 checksum result.
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* This must be a writable buffer of length \c 64 Bytes.
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*
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* \return \c 0 on success.
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* \return A negative error code on failure.
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*/
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int mbedtls_sha512_finish_ret( mbedtls_sha512_context *ctx,
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unsigned char output[64] )
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{
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int ret = MBEDTLS_ERR_THIS_CORRUPTION;
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unsigned used;
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uint64_t high, low;
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SHA512_VALIDATE_RET( ctx != NULL );
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SHA512_VALIDATE_RET( (unsigned char *)output != NULL );
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/*
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* Add padding: 0x80 then 0x00 until 16 bytes remain for the length
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*/
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used = ctx->total[0] & 0x7F;
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ctx->buffer[used++] = 0x80;
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if( used <= 112 )
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{
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/* Enough room for padding + length in current block */
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mbedtls_platform_zeroize( ctx->buffer + used, 112 - used );
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}
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else
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{
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/* We'll need an extra block */
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mbedtls_platform_zeroize( ctx->buffer + used, 128 - used );
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if( ( ret = mbedtls_internal_sha512_process( ctx, ctx->buffer ) ) != 0 )
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return( ret );
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mbedtls_platform_zeroize( ctx->buffer, 112 );
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}
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/*
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* Add message length
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*/
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high = ( ctx->total[0] >> 61 )
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| ( ctx->total[1] << 3 );
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low = ( ctx->total[0] << 3 );
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sha512_put_uint64_be( high, ctx->buffer, 112 );
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sha512_put_uint64_be( low, ctx->buffer, 120 );
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if( ( ret = mbedtls_internal_sha512_process( ctx, ctx->buffer ) ) != 0 )
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return( ret );
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/*
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* Output final state
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*/
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sha512_put_uint64_be( ctx->state[0], output, 0 );
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sha512_put_uint64_be( ctx->state[1], output, 8 );
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sha512_put_uint64_be( ctx->state[2], output, 16 );
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sha512_put_uint64_be( ctx->state[3], output, 24 );
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sha512_put_uint64_be( ctx->state[4], output, 32 );
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sha512_put_uint64_be( ctx->state[5], output, 40 );
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#if !defined(MBEDTLS_SHA512_NO_SHA384)
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if( ctx->is384 == 0 )
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#endif
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{
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sha512_put_uint64_be( ctx->state[6], output, 48 );
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sha512_put_uint64_be( ctx->state[7], output, 56 );
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}
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return( 0 );
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}
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#endif /* !MBEDTLS_SHA512_ALT */
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/**
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* \brief This function calculates the SHA-512 or SHA-384
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* checksum of a buffer.
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*
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* The function allocates the context, performs the
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* calculation, and frees the context.
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*
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* The SHA-512 result is calculated as
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* output = SHA-512(input buffer).
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*
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* \param input The buffer holding the input data. This must be
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* a readable buffer of length \p ilen Bytes.
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* \param ilen The length of the input data in Bytes.
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* \param output The SHA-384 or SHA-512 checksum result.
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* This must be a writable buffer of length \c 64 Bytes.
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* \param is384 Determines which function to use. This must be either
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* \c 0 for SHA-512, or \c 1 for SHA-384.
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*
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* \note When \c MBEDTLS_SHA512_NO_SHA384 is defined, \p is384 must
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* be \c 0, or the function will return
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* #MBEDTLS_ERR_SHA512_BAD_INPUT_DATA.
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*
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* \return \c 0 on success.
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* \return A negative error code on failure.
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*/
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int mbedtls_sha512_ret( const void *input,
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size_t ilen,
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unsigned char output[64],
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int is384 )
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{
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int ret = MBEDTLS_ERR_THIS_CORRUPTION;
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mbedtls_sha512_context ctx;
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#if !defined(MBEDTLS_SHA512_NO_SHA384)
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SHA512_VALIDATE_RET( is384 == 0 || is384 == 1 );
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#else
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SHA512_VALIDATE_RET( is384 == 0 );
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#endif
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SHA512_VALIDATE_RET( ilen == 0 || input );
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SHA512_VALIDATE_RET( (unsigned char *)output );
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mbedtls_sha512_init( &ctx );
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MBEDTLS_CHK( mbedtls_sha512_starts_ret( &ctx, is384 ) );
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MBEDTLS_CHK( mbedtls_sha512_update_ret( &ctx, input, ilen ) );
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MBEDTLS_CHK( mbedtls_sha512_finish_ret( &ctx, output ) );
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cleanup:
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mbedtls_sha512_free( &ctx );
|
|
return( ret );
|
|
}
|
|
|
|
dontinstrument int mbedtls_sha512_ret_384( const void *input, size_t ilen, unsigned char *output )
|
|
{
|
|
return mbedtls_sha512_ret( input, ilen, output, true );
|
|
}
|
|
|
|
dontinstrument int mbedtls_sha512_ret_512( const void *input, size_t ilen, unsigned char *output )
|
|
{
|
|
return mbedtls_sha512_ret( input, ilen, output, false );
|
|
}
|
|
|
|
#if !defined(MBEDTLS_SHA512_NO_SHA384)
|
|
const mbedtls_md_info_t mbedtls_sha384_info = {
|
|
"SHA384",
|
|
MBEDTLS_MD_SHA384,
|
|
48,
|
|
128,
|
|
(void *)mbedtls_sha512_starts_384,
|
|
(void *)mbedtls_sha512_update_ret,
|
|
(void *)mbedtls_internal_sha512_process,
|
|
(void *)mbedtls_sha512_finish_ret,
|
|
mbedtls_sha512_ret_384,
|
|
};
|
|
#endif
|
|
|
|
const mbedtls_md_info_t mbedtls_sha512_info = {
|
|
"SHA512",
|
|
MBEDTLS_MD_SHA512,
|
|
64,
|
|
128,
|
|
(void *)mbedtls_sha512_starts_512,
|
|
(void *)mbedtls_sha512_update_ret,
|
|
(void *)mbedtls_internal_sha512_process,
|
|
(void *)mbedtls_sha512_finish_ret,
|
|
mbedtls_sha512_ret_512,
|
|
};
|
|
|
|
#endif /* MBEDTLS_SHA512_C */
|