cosmopolitan/third_party/mbedtls/sha256.c
Justine Tunney 398f0c16fb Add SNI support to redbean and improve SSL perf
This change makes SSL virtual hosting possible. You can now load
multiple certificates for multiple domains and redbean will just
figure out which one to use, even if you only have 1 ip address.
You can also use a jumbo certificate that lists all your domains
in the the subject alternative names.

This change also makes performance improvements to MbedTLS. Here
are some benchmarks vs. cc1920749e

                                   BEFORE    AFTER   (microsecs)
suite_ssl.com                     2512881   191738 13.11x faster
suite_pkparse.com                   36291     3295 11.01x faster
suite_x509parse.com                854669   120293  7.10x faster
suite_pkwrite.com                    6549     1265  5.18x faster
suite_ecdsa.com                     53347    18778  2.84x faster
suite_pk.com                        49051    18717  2.62x faster
suite_ecdh.com                      19535     9502  2.06x faster
suite_shax.com                      15848     7965  1.99x faster
suite_rsa.com                      353257   184828  1.91x faster
suite_x509write.com                162646    85733  1.90x faster
suite_ecp.com                       20503    11050  1.86x faster
suite_hmac_drbg.no_reseed.com       19528    11417  1.71x faster
suite_hmac_drbg.nopr.com            12460     8010  1.56x faster
suite_mpi.com                      687124   442661  1.55x faster
suite_hmac_drbg.pr.com              11890     7752  1.53x faster

There aren't any special tricks to the performance imporvements.
It's mostly due to code cleanup, assembly and intel instructions
like mulx, adox, and adcx.
2021-07-23 13:56:13 -07:00

613 lines
21 KiB
C

/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:4;tab-width:4;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright The Mbed TLS Contributors │
│ │
│ 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. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/dce.h"
#include "libc/macros.internal.h"
#include "libc/nexgen32e/x86feature.h"
#include "libc/str/str.h"
#include "third_party/mbedtls/common.h"
#include "third_party/mbedtls/endian.h"
#include "third_party/mbedtls/error.h"
#include "third_party/mbedtls/md.h"
#include "third_party/mbedtls/platform.h"
#include "third_party/mbedtls/sha256.h"
asm(".ident\t\"\\n\\n\
Mbed TLS (Apache 2.0)\\n\
Copyright ARM Limited\\n\
Copyright Mbed TLS Contributors\"");
asm(".include \"libc/disclaimer.inc\"");
/* clang-format off */
/**
* @fileoverview FIPS-180-2 compliant SHA-256 implementation
*
* The SHA-256 Secure Hash Standard was published by NIST in 2002.
*
* @see http://csrc.nist.gov/publications/fips/fips180-2/fips180-2.pdf
*/
#define SHA256_VALIDATE_RET(cond) \
MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_SHA256_BAD_INPUT_DATA )
#define SHA256_VALIDATE(cond) MBEDTLS_INTERNAL_VALIDATE( cond )
void sha256_transform_rorx(mbedtls_sha256_context *, const uint8_t *, int);
#if !defined(MBEDTLS_SHA256_ALT)
/**
* \brief This function clones the state of a SHA-256 context.
*
* \param dst The destination context. This must be initialized.
* \param src The context to clone. This must be initialized.
*/
void mbedtls_sha256_clone( mbedtls_sha256_context *dst,
const mbedtls_sha256_context *src )
{
SHA256_VALIDATE( dst );
SHA256_VALIDATE( src );
*dst = *src;
}
int mbedtls_sha256_starts_224( mbedtls_sha256_context *ctx )
{
SHA256_VALIDATE_RET( ctx );
ctx->total[0] = 0;
ctx->total[1] = 0;
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;
ctx->is224 = true;
return( 0 );
}
int mbedtls_sha256_starts_256( mbedtls_sha256_context *ctx )
{
SHA256_VALIDATE_RET( ctx );
ctx->total[0] = 0;
ctx->total[1] = 0;
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;
ctx->is224 = false;
return( 0 );
}
/**
* \brief This function starts a SHA-224 or SHA-256 checksum
* calculation.
*
* \param ctx The context to use. This must be initialized.
* \param is224 This determines which function to use. This must be
* either \c 0 for SHA-256, or \c 1 for SHA-224.
*
* \return \c 0 on success.
* \return A negative error code on failure.
*/
int mbedtls_sha256_starts_ret( mbedtls_sha256_context *ctx, int is224 )
{
SHA256_VALIDATE_RET( ctx );
SHA256_VALIDATE_RET( is224 == 0 || is224 == 1 );
if( !is224 )
return mbedtls_sha256_starts_256( ctx );
else
return mbedtls_sha256_starts_224( ctx );
}
#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,
};
#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 )
/**
* \brief This function processes a single data block within
* the ongoing SHA-256 computation. This function is for
* internal use only.
*
* \param ctx The SHA-256 context. This must be initialized.
* \param data The buffer holding one block of data. This must
* be a readable buffer of length \c 64 Bytes.
*
* \return \c 0 on success.
* \return A negative error code on failure.
*/
int mbedtls_internal_sha256_process( mbedtls_sha256_context *ctx,
const unsigned char data[64] )
{
struct
{
uint32_t temp1, temp2, W[64];
uint32_t A[8];
} local;
unsigned int i;
SHA256_VALIDATE_RET( ctx != NULL );
SHA256_VALIDATE_RET( (const unsigned char *)data != NULL );
if (!IsTiny() && X86_HAVE(AVX2) && X86_HAVE(BMI2)) {
sha256_transform_rorx(ctx, data, 1);
return 0;
}
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 )
GET_UINT32_BE( local.W[i], 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++ )
GET_UINT32_BE( local.W[i], 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 */
/**
* \brief This function feeds an input buffer into an ongoing
* SHA-256 checksum calculation.
*
* \param ctx The SHA-256 context. This must be initialized
* and have a hash operation started.
* \param input The buffer holding the data. This must be a readable
* buffer of length \p ilen Bytes.
* \param ilen The length of the input data in Bytes.
*
* \return \c 0 on success.
* \return A negative error code on failure.
*/
int mbedtls_sha256_update_ret( mbedtls_sha256_context *ctx,
const unsigned char *input,
size_t ilen )
{
int ret = MBEDTLS_ERR_THIS_CORRUPTION;
size_t fill;
uint32_t left;
SHA256_VALIDATE_RET( ctx != NULL );
SHA256_VALIDATE_RET( ilen == 0 || input != NULL );
if( ilen == 0 )
return( 0 );
left = ctx->total[0] & 0x3F;
fill = 64 - 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;
}
if (!IsTiny() && ilen >= 64 && X86_HAVE(AVX2) && X86_HAVE(BMI2)) {
sha256_transform_rorx(ctx, input, ilen / 64);
input += ROUNDDOWN(ilen, 64);
ilen -= ROUNDDOWN(ilen, 64);
}
while( ilen >= 64 )
{
if( ( ret = mbedtls_internal_sha256_process( ctx, input ) ) != 0 )
return( ret );
input += 64;
ilen -= 64;
}
if( ilen > 0 )
memcpy( (void *) (ctx->buffer + left), input, ilen );
return( 0 );
}
/**
* \brief This function finishes the SHA-256 operation, and writes
* the result to the output buffer.
*
* \param ctx The SHA-256 context. This must be initialized
* and have a hash operation started.
* \param output The SHA-224 or SHA-256 checksum result.
* This must be a writable buffer of length \c 32 Bytes.
*
* \return \c 0 on success.
* \return A negative error code on failure.
*/
int mbedtls_sha256_finish_ret( mbedtls_sha256_context *ctx,
unsigned char output[32] )
{
int ret = MBEDTLS_ERR_THIS_CORRUPTION;
uint32_t used;
uint32_t high, low;
SHA256_VALIDATE_RET( ctx != NULL );
SHA256_VALIDATE_RET( (unsigned char *)output != NULL );
/*
* 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 */
mbedtls_platform_zeroize( ctx->buffer + used, 56 - used );
}
else
{
/* We'll need an extra block */
mbedtls_platform_zeroize( ctx->buffer + used, 64 - used );
if( ( ret = mbedtls_internal_sha256_process( ctx, ctx->buffer ) ) != 0 )
return( ret );
mbedtls_platform_zeroize( ctx->buffer, 56 );
}
/*
* Add message length
*/
high = ( ctx->total[0] >> 29 )
| ( ctx->total[1] << 3 );
low = ( ctx->total[0] << 3 );
PUT_UINT32_BE( high, ctx->buffer, 56 );
PUT_UINT32_BE( low, ctx->buffer, 60 );
if( ( ret = mbedtls_internal_sha256_process( ctx, ctx->buffer ) ) != 0 )
return( ret );
/*
* Output final state
*/
PUT_UINT32_BE( ctx->state[0], output, 0 );
PUT_UINT32_BE( ctx->state[1], output, 4 );
PUT_UINT32_BE( ctx->state[2], output, 8 );
PUT_UINT32_BE( ctx->state[3], output, 12 );
PUT_UINT32_BE( ctx->state[4], output, 16 );
PUT_UINT32_BE( ctx->state[5], output, 20 );
PUT_UINT32_BE( ctx->state[6], output, 24 );
if( ctx->is224 == 0 )
PUT_UINT32_BE( ctx->state[7], output, 28 );
return( 0 );
}
#endif /* !MBEDTLS_SHA256_ALT */
/**
* \brief This function calculates the SHA-224 or SHA-256
* checksum of a buffer.
*
* The function allocates the context, performs the
* calculation, and frees the context.
*
* The SHA-256 result is calculated as
* output = SHA-256(input buffer).
*
* \param input The buffer holding the data. This must be a readable
* buffer of length \p ilen Bytes.
* \param ilen The length of the input data in Bytes.
* \param output The SHA-224 or SHA-256 checksum result. This must
* be a writable buffer of length \c 32 Bytes.
* \param is224 Determines which function to use. This must be
* either \c 0 for SHA-256, or \c 1 for SHA-224.
*/
int mbedtls_sha256_ret( const void *input,
size_t ilen,
unsigned char output[32],
int is224 )
{
int ret = MBEDTLS_ERR_THIS_CORRUPTION;
mbedtls_sha256_context ctx;
SHA256_VALIDATE_RET( is224 == 0 || is224 == 1 );
SHA256_VALIDATE_RET( ilen == 0 || input != NULL );
SHA256_VALIDATE_RET( (unsigned char *)output != NULL );
mbedtls_sha256_init( &ctx );
if( ( ret = mbedtls_sha256_starts_ret( &ctx, is224 ) ) != 0 )
goto exit;
if( ( ret = mbedtls_sha256_update_ret( &ctx, input, ilen ) ) != 0 )
goto exit;
if( ( ret = mbedtls_sha256_finish_ret( &ctx, output ) ) != 0 )
goto exit;
exit:
mbedtls_sha256_free( &ctx );
return( ret );
}
noinstrument int mbedtls_sha256_ret_224( const void *input, size_t ilen, void *output )
{
return mbedtls_sha256_ret( input, ilen, output, true );
}
noinstrument int mbedtls_sha256_ret_256( const void *input, size_t ilen, void *output )
{
return mbedtls_sha256_ret( input, ilen, output, false );
}
const mbedtls_md_info_t mbedtls_sha224_info = {
"SHA224",
MBEDTLS_MD_SHA224,
28,
64,
(void *)mbedtls_sha256_starts_224,
(void *)mbedtls_sha256_update_ret,
(void *)mbedtls_internal_sha256_process,
(void *)mbedtls_sha256_finish_ret,
mbedtls_sha256_ret_224,
};
const mbedtls_md_info_t mbedtls_sha256_info = {
"SHA256",
MBEDTLS_MD_SHA256,
32,
64,
(void *)mbedtls_sha256_starts_256,
(void *)mbedtls_sha256_update_ret,
(void *)mbedtls_internal_sha256_process,
(void *)mbedtls_sha256_finish_ret,
mbedtls_sha256_ret_256,
};
#if defined(MBEDTLS_SELF_TEST)
/*
* FIPS-180-2 test vectors
*/
static const unsigned char sha256_test_buf[3][57] =
{
{ "abc" },
{ "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq" },
{ "" }
};
static const size_t sha256_test_buflen[3] =
{
3, 56, 1000
};
static const unsigned char sha256_test_sum[6][32] =
{
/*
* SHA-224 test vectors
*/
{ 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 },
/*
* SHA-256 test vectors
*/
{ 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 }
};
/**
* \brief The SHA-224 and SHA-256 checkup routine.
*
* \return \c 0 on success.
* \return \c 1 on failure.
*/
int mbedtls_sha256_self_test( int verbose )
{
int i, j, k, buflen, ret = 0;
unsigned char *buf;
unsigned char sha256sum[32];
mbedtls_sha256_context ctx;
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 < 6; i++ )
{
j = i % 3;
k = i < 3;
if( verbose != 0 )
mbedtls_printf( " SHA-%d test #%d: ", 256 - k * 32, j + 1 );
if( ( ret = mbedtls_sha256_starts_ret( &ctx, k ) ) != 0 )
goto fail;
if( j == 2 )
{
memset( buf, 'a', buflen = 1000 );
for( j = 0; j < 1000; j++ )
{
ret = mbedtls_sha256_update_ret( &ctx, buf, buflen );
if( ret != 0 )
goto fail;
}
}
else
{
ret = mbedtls_sha256_update_ret( &ctx, sha256_test_buf[j],
sha256_test_buflen[j] );
if( ret != 0 )
goto fail;
}
if( ( ret = mbedtls_sha256_finish_ret( &ctx, sha256sum ) ) != 0 )
goto fail;
if( memcmp( sha256sum, sha256_test_sum[i], 32 - k * 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 );
}
#endif /* MBEDTLS_SELF_TEST */