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mbedtls: make style

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This commit is contained in:
Philippe Teuwen 2021-05-14 11:00:46 +02:00
commit b1d6eaf2f7
177 changed files with 37224 additions and 41821 deletions
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417
common/mbedtls/hmac_drbg.c
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@ -49,9 +49,8 @@
/*
* HMAC_DRBG context initialization
*/
void mbedtls_hmac_drbg_init( mbedtls_hmac_drbg_context *ctx )
{
memset( ctx, 0, sizeof( mbedtls_hmac_drbg_context ) );
void mbedtls_hmac_drbg_init(mbedtls_hmac_drbg_context *ctx) {
memset(ctx, 0, sizeof(mbedtls_hmac_drbg_context));
ctx->reseed_interval = MBEDTLS_HMAC_DRBG_RESEED_INTERVAL;
}
@ -59,74 +58,69 @@ void mbedtls_hmac_drbg_init( mbedtls_hmac_drbg_context *ctx )
/*
* HMAC_DRBG update, using optional additional data (10.1.2.2)
*/
int mbedtls_hmac_drbg_update_ret( mbedtls_hmac_drbg_context *ctx,
const unsigned char *additional,
size_t add_len )
{
size_t md_len = mbedtls_md_get_size( ctx->md_ctx.md_info );
unsigned char rounds = ( additional != NULL && add_len != 0 ) ? 2 : 1;
int mbedtls_hmac_drbg_update_ret(mbedtls_hmac_drbg_context *ctx,
const unsigned char *additional,
size_t add_len) {
size_t md_len = mbedtls_md_get_size(ctx->md_ctx.md_info);
unsigned char rounds = (additional != NULL && add_len != 0) ? 2 : 1;
unsigned char sep[1];
unsigned char K[MBEDTLS_MD_MAX_SIZE];
int ret = MBEDTLS_ERR_MD_BAD_INPUT_DATA;
for( sep[0] = 0; sep[0] < rounds; sep[0]++ )
{
for (sep[0] = 0; sep[0] < rounds; sep[0]++) {
/* Step 1 or 4 */
if( ( ret = mbedtls_md_hmac_reset( &ctx->md_ctx ) ) != 0 )
if ((ret = mbedtls_md_hmac_reset(&ctx->md_ctx)) != 0)
goto exit;
if( ( ret = mbedtls_md_hmac_update( &ctx->md_ctx,
ctx->V, md_len ) ) != 0 )
if ((ret = mbedtls_md_hmac_update(&ctx->md_ctx,
ctx->V, md_len)) != 0)
goto exit;
if( ( ret = mbedtls_md_hmac_update( &ctx->md_ctx,
sep, 1 ) ) != 0 )
goto exit;
if( rounds == 2 )
{
if( ( ret = mbedtls_md_hmac_update( &ctx->md_ctx,
additional, add_len ) ) != 0 )
if ((ret = mbedtls_md_hmac_update(&ctx->md_ctx,
sep, 1)) != 0)
goto exit;
if (rounds == 2) {
if ((ret = mbedtls_md_hmac_update(&ctx->md_ctx,
additional, add_len)) != 0)
goto exit;
}
if( ( ret = mbedtls_md_hmac_finish( &ctx->md_ctx, K ) ) != 0 )
if ((ret = mbedtls_md_hmac_finish(&ctx->md_ctx, K)) != 0)
goto exit;
/* Step 2 or 5 */
if( ( ret = mbedtls_md_hmac_starts( &ctx->md_ctx, K, md_len ) ) != 0 )
if ((ret = mbedtls_md_hmac_starts(&ctx->md_ctx, K, md_len)) != 0)
goto exit;
if( ( ret = mbedtls_md_hmac_update( &ctx->md_ctx,
ctx->V, md_len ) ) != 0 )
if ((ret = mbedtls_md_hmac_update(&ctx->md_ctx,
ctx->V, md_len)) != 0)
goto exit;
if( ( ret = mbedtls_md_hmac_finish( &ctx->md_ctx, ctx->V ) ) != 0 )
if ((ret = mbedtls_md_hmac_finish(&ctx->md_ctx, ctx->V)) != 0)
goto exit;
}
exit:
mbedtls_platform_zeroize( K, sizeof( K ) );
return( ret );
mbedtls_platform_zeroize(K, sizeof(K));
return (ret);
}
#if !defined(MBEDTLS_DEPRECATED_REMOVED)
void mbedtls_hmac_drbg_update( mbedtls_hmac_drbg_context *ctx,
const unsigned char *additional,
size_t add_len )
{
(void) mbedtls_hmac_drbg_update_ret( ctx, additional, add_len );
void mbedtls_hmac_drbg_update(mbedtls_hmac_drbg_context *ctx,
const unsigned char *additional,
size_t add_len) {
(void) mbedtls_hmac_drbg_update_ret(ctx, additional, add_len);
}
#endif /* MBEDTLS_DEPRECATED_REMOVED */
/*
* Simplified HMAC_DRBG initialisation (for use with deterministic ECDSA)
*/
int mbedtls_hmac_drbg_seed_buf( mbedtls_hmac_drbg_context *ctx,
const mbedtls_md_info_t * md_info,
const unsigned char *data, size_t data_len )
{
int mbedtls_hmac_drbg_seed_buf(mbedtls_hmac_drbg_context *ctx,
const mbedtls_md_info_t *md_info,
const unsigned char *data, size_t data_len) {
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
if( ( ret = mbedtls_md_setup( &ctx->md_ctx, md_info, 1 ) ) != 0 )
return( ret );
if ((ret = mbedtls_md_setup(&ctx->md_ctx, md_info, 1)) != 0)
return (ret);
#if defined(MBEDTLS_THREADING_C)
mbedtls_mutex_init( &ctx->mutex );
mbedtls_mutex_init(&ctx->mutex);
#endif
/*
@ -134,15 +128,15 @@ int mbedtls_hmac_drbg_seed_buf( mbedtls_hmac_drbg_context *ctx,
* Use the V memory location, which is currently all 0, to initialize the
* MD context with an all-zero key. Then set V to its initial value.
*/
if( ( ret = mbedtls_md_hmac_starts( &ctx->md_ctx, ctx->V,
mbedtls_md_get_size( md_info ) ) ) != 0 )
return( ret );
memset( ctx->V, 0x01, mbedtls_md_get_size( md_info ) );
if ((ret = mbedtls_md_hmac_starts(&ctx->md_ctx, ctx->V,
mbedtls_md_get_size(md_info))) != 0)
return (ret);
memset(ctx->V, 0x01, mbedtls_md_get_size(md_info));
if( ( ret = mbedtls_hmac_drbg_update_ret( ctx, data, data_len ) ) != 0 )
return( ret );
if ((ret = mbedtls_hmac_drbg_update_ret(ctx, data, data_len)) != 0)
return (ret);
return( 0 );
return (0);
}
/*
@ -150,10 +144,9 @@ int mbedtls_hmac_drbg_seed_buf( mbedtls_hmac_drbg_context *ctx,
* Comments starting with arabic numbers refer to section 10.1.2.4
* of SP800-90A, while roman numbers refer to section 9.2.
*/
static int hmac_drbg_reseed_core( mbedtls_hmac_drbg_context *ctx,
const unsigned char *additional, size_t len,
int use_nonce )
{
static int hmac_drbg_reseed_core(mbedtls_hmac_drbg_context *ctx,
const unsigned char *additional, size_t len,
int use_nonce) {
unsigned char seed[MBEDTLS_HMAC_DRBG_MAX_SEED_INPUT];
size_t seedlen = 0;
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
@ -161,33 +154,30 @@ static int hmac_drbg_reseed_core( mbedtls_hmac_drbg_context *ctx,
{
size_t total_entropy_len;
if( use_nonce == 0 )
if (use_nonce == 0)
total_entropy_len = ctx->entropy_len;
else
total_entropy_len = ctx->entropy_len * 3 / 2;
/* III. Check input length */
if( len > MBEDTLS_HMAC_DRBG_MAX_INPUT ||
total_entropy_len + len > MBEDTLS_HMAC_DRBG_MAX_SEED_INPUT )
{
return( MBEDTLS_ERR_HMAC_DRBG_INPUT_TOO_BIG );
if (len > MBEDTLS_HMAC_DRBG_MAX_INPUT ||
total_entropy_len + len > MBEDTLS_HMAC_DRBG_MAX_SEED_INPUT) {
return (MBEDTLS_ERR_HMAC_DRBG_INPUT_TOO_BIG);
}
}
memset( seed, 0, MBEDTLS_HMAC_DRBG_MAX_SEED_INPUT );
memset(seed, 0, MBEDTLS_HMAC_DRBG_MAX_SEED_INPUT);
/* IV. Gather entropy_len bytes of entropy for the seed */
if( ( ret = ctx->f_entropy( ctx->p_entropy,
seed, ctx->entropy_len ) ) != 0 )
{
return( MBEDTLS_ERR_HMAC_DRBG_ENTROPY_SOURCE_FAILED );
if ((ret = ctx->f_entropy(ctx->p_entropy,
seed, ctx->entropy_len)) != 0) {
return (MBEDTLS_ERR_HMAC_DRBG_ENTROPY_SOURCE_FAILED);
}
seedlen += ctx->entropy_len;
/* For initial seeding, allow adding of nonce generated
* from the entropy source. See Sect 8.6.7 in SP800-90A. */
if( use_nonce )
{
if (use_nonce) {
/* Note: We don't merge the two calls to f_entropy() in order
* to avoid requesting too much entropy from f_entropy()
* at once. Specifically, if the underlying digest is not
@ -195,11 +185,10 @@ static int hmac_drbg_reseed_core( mbedtls_hmac_drbg_context *ctx,
* is larger than the maximum of 32 Bytes that our own
* entropy source implementation can emit in a single
* call in configurations disabling SHA-512. */
if( ( ret = ctx->f_entropy( ctx->p_entropy,
seed + seedlen,
ctx->entropy_len / 2 ) ) != 0 )
{
return( MBEDTLS_ERR_HMAC_DRBG_ENTROPY_SOURCE_FAILED );
if ((ret = ctx->f_entropy(ctx->p_entropy,
seed + seedlen,
ctx->entropy_len / 2)) != 0) {
return (MBEDTLS_ERR_HMAC_DRBG_ENTROPY_SOURCE_FAILED);
}
seedlen += ctx->entropy_len / 2;
@ -207,14 +196,13 @@ static int hmac_drbg_reseed_core( mbedtls_hmac_drbg_context *ctx,
/* 1. Concatenate entropy and additional data if any */
if( additional != NULL && len != 0 )
{
memcpy( seed + seedlen, additional, len );
if (additional != NULL && len != 0) {
memcpy(seed + seedlen, additional, len);
seedlen += len;
}
/* 2. Update state */
if( ( ret = mbedtls_hmac_drbg_update_ret( ctx, seed, seedlen ) ) != 0 )
if ((ret = mbedtls_hmac_drbg_update_ret(ctx, seed, seedlen)) != 0)
goto exit;
/* 3. Reset reseed_counter */
@ -222,17 +210,16 @@ static int hmac_drbg_reseed_core( mbedtls_hmac_drbg_context *ctx,
exit:
/* 4. Done */
mbedtls_platform_zeroize( seed, seedlen );
return( ret );
mbedtls_platform_zeroize(seed, seedlen);
return (ret);
}
/*
* HMAC_DRBG reseeding: 10.1.2.4 + 9.2
*/
int mbedtls_hmac_drbg_reseed( mbedtls_hmac_drbg_context *ctx,
const unsigned char *additional, size_t len )
{
return( hmac_drbg_reseed_core( ctx, additional, len, 0 ) );
int mbedtls_hmac_drbg_reseed(mbedtls_hmac_drbg_context *ctx,
const unsigned char *additional, size_t len) {
return (hmac_drbg_reseed_core(ctx, additional, len, 0));
}
/*
@ -241,40 +228,38 @@ int mbedtls_hmac_drbg_reseed( mbedtls_hmac_drbg_context *ctx,
* The nonce is not passed as a separate parameter but extracted
* from the entropy source as suggested in 8.6.7.
*/
int mbedtls_hmac_drbg_seed( mbedtls_hmac_drbg_context *ctx,
const mbedtls_md_info_t * md_info,
int (*f_entropy)(void *, unsigned char *, size_t),
void *p_entropy,
const unsigned char *custom,
size_t len )
{
int mbedtls_hmac_drbg_seed(mbedtls_hmac_drbg_context *ctx,
const mbedtls_md_info_t *md_info,
int (*f_entropy)(void *, unsigned char *, size_t),
void *p_entropy,
const unsigned char *custom,
size_t len) {
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
size_t md_size;
if( ( ret = mbedtls_md_setup( &ctx->md_ctx, md_info, 1 ) ) != 0 )
return( ret );
if ((ret = mbedtls_md_setup(&ctx->md_ctx, md_info, 1)) != 0)
return (ret);
/* The mutex is initialized iff the md context is set up. */
#if defined(MBEDTLS_THREADING_C)
mbedtls_mutex_init( &ctx->mutex );
mbedtls_mutex_init(&ctx->mutex);
#endif
md_size = mbedtls_md_get_size( md_info );
md_size = mbedtls_md_get_size(md_info);
/*
* Set initial working state.
* Use the V memory location, which is currently all 0, to initialize the
* MD context with an all-zero key. Then set V to its initial value.
*/
if( ( ret = mbedtls_md_hmac_starts( &ctx->md_ctx, ctx->V, md_size ) ) != 0 )
return( ret );
memset( ctx->V, 0x01, md_size );
if ((ret = mbedtls_md_hmac_starts(&ctx->md_ctx, ctx->V, md_size)) != 0)
return (ret);
memset(ctx->V, 0x01, md_size);
ctx->f_entropy = f_entropy;
ctx->p_entropy = p_entropy;
if( ctx->entropy_len == 0 )
{
if (ctx->entropy_len == 0) {
/*
* See SP800-57 5.6.1 (p. 65-66) for the security strength provided by
* each hash function, then according to SP800-90A rev1 10.1 table 2,
@ -287,37 +272,33 @@ int mbedtls_hmac_drbg_seed( mbedtls_hmac_drbg_context *ctx,
32; /* better (256+) -> 256 bits */
}
if( ( ret = hmac_drbg_reseed_core( ctx, custom, len,
1 /* add nonce */ ) ) != 0 )
{
return( ret );
if ((ret = hmac_drbg_reseed_core(ctx, custom, len,
1 /* add nonce */)) != 0) {
return (ret);
}
return( 0 );
return (0);
}
/*
* Set prediction resistance
*/
void mbedtls_hmac_drbg_set_prediction_resistance( mbedtls_hmac_drbg_context *ctx,
int resistance )
{
void mbedtls_hmac_drbg_set_prediction_resistance(mbedtls_hmac_drbg_context *ctx,
int resistance) {
ctx->prediction_resistance = resistance;
}
/*
* Set entropy length grabbed for seeding
*/
void mbedtls_hmac_drbg_set_entropy_len( mbedtls_hmac_drbg_context *ctx, size_t len )
{
void mbedtls_hmac_drbg_set_entropy_len(mbedtls_hmac_drbg_context *ctx, size_t len) {
ctx->entropy_len = len;
}
/*
* Set reseed interval
*/
void mbedtls_hmac_drbg_set_reseed_interval( mbedtls_hmac_drbg_context *ctx, int interval )
{
void mbedtls_hmac_drbg_set_reseed_interval(mbedtls_hmac_drbg_context *ctx, int interval) {
ctx->reseed_interval = interval;
}
@ -325,64 +306,60 @@ void mbedtls_hmac_drbg_set_reseed_interval( mbedtls_hmac_drbg_context *ctx, int
* HMAC_DRBG random function with optional additional data:
* 10.1.2.5 (arabic) + 9.3 (Roman)
*/
int mbedtls_hmac_drbg_random_with_add( void *p_rng,
unsigned char *output, size_t out_len,
const unsigned char *additional, size_t add_len )
{
int mbedtls_hmac_drbg_random_with_add(void *p_rng,
unsigned char *output, size_t out_len,
const unsigned char *additional, size_t add_len) {
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
mbedtls_hmac_drbg_context *ctx = (mbedtls_hmac_drbg_context *) p_rng;
size_t md_len = mbedtls_md_get_size( ctx->md_ctx.md_info );
size_t md_len = mbedtls_md_get_size(ctx->md_ctx.md_info);
size_t left = out_len;
unsigned char *out = output;
/* II. Check request length */
if( out_len > MBEDTLS_HMAC_DRBG_MAX_REQUEST )
return( MBEDTLS_ERR_HMAC_DRBG_REQUEST_TOO_BIG );
if (out_len > MBEDTLS_HMAC_DRBG_MAX_REQUEST)
return (MBEDTLS_ERR_HMAC_DRBG_REQUEST_TOO_BIG);
/* III. Check input length */
if( add_len > MBEDTLS_HMAC_DRBG_MAX_INPUT )
return( MBEDTLS_ERR_HMAC_DRBG_INPUT_TOO_BIG );
if (add_len > MBEDTLS_HMAC_DRBG_MAX_INPUT)
return (MBEDTLS_ERR_HMAC_DRBG_INPUT_TOO_BIG);
/* 1. (aka VII and IX) Check reseed counter and PR */
if( ctx->f_entropy != NULL && /* For no-reseeding instances */
( ctx->prediction_resistance == MBEDTLS_HMAC_DRBG_PR_ON ||
ctx->reseed_counter > ctx->reseed_interval ) )
{
if( ( ret = mbedtls_hmac_drbg_reseed( ctx, additional, add_len ) ) != 0 )
return( ret );
if (ctx->f_entropy != NULL && /* For no-reseeding instances */
(ctx->prediction_resistance == MBEDTLS_HMAC_DRBG_PR_ON ||
ctx->reseed_counter > ctx->reseed_interval)) {
if ((ret = mbedtls_hmac_drbg_reseed(ctx, additional, add_len)) != 0)
return (ret);
add_len = 0; /* VII.4 */
}
/* 2. Use additional data if any */
if( additional != NULL && add_len != 0 )
{
if( ( ret = mbedtls_hmac_drbg_update_ret( ctx,
additional, add_len ) ) != 0 )
if (additional != NULL && add_len != 0) {
if ((ret = mbedtls_hmac_drbg_update_ret(ctx,
additional, add_len)) != 0)
goto exit;
}
/* 3, 4, 5. Generate bytes */
while( left != 0 )
{
while (left != 0) {
size_t use_len = left > md_len ? md_len : left;
if( ( ret = mbedtls_md_hmac_reset( &ctx->md_ctx ) ) != 0 )
if ((ret = mbedtls_md_hmac_reset(&ctx->md_ctx)) != 0)
goto exit;
if( ( ret = mbedtls_md_hmac_update( &ctx->md_ctx,
ctx->V, md_len ) ) != 0 )
if ((ret = mbedtls_md_hmac_update(&ctx->md_ctx,
ctx->V, md_len)) != 0)
goto exit;
if( ( ret = mbedtls_md_hmac_finish( &ctx->md_ctx, ctx->V ) ) != 0 )
if ((ret = mbedtls_md_hmac_finish(&ctx->md_ctx, ctx->V)) != 0)
goto exit;
memcpy( out, ctx->V, use_len );
memcpy(out, ctx->V, use_len);
out += use_len;
left -= use_len;
}
/* 6. Update */
if( ( ret = mbedtls_hmac_drbg_update_ret( ctx,
additional, add_len ) ) != 0 )
if ((ret = mbedtls_hmac_drbg_update_ret(ctx,
additional, add_len)) != 0)
goto exit;
/* 7. Update reseed counter */
@ -390,66 +367,62 @@ int mbedtls_hmac_drbg_random_with_add( void *p_rng,
exit:
/* 8. Done */
return( ret );
return (ret);
}
/*
* HMAC_DRBG random function
*/
int mbedtls_hmac_drbg_random( void *p_rng, unsigned char *output, size_t out_len )
{
int mbedtls_hmac_drbg_random(void *p_rng, unsigned char *output, size_t out_len) {
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
mbedtls_hmac_drbg_context *ctx = (mbedtls_hmac_drbg_context *) p_rng;
#if defined(MBEDTLS_THREADING_C)
if( ( ret = mbedtls_mutex_lock( &ctx->mutex ) ) != 0 )
return( ret );
if ((ret = mbedtls_mutex_lock(&ctx->mutex)) != 0)
return (ret);
#endif
ret = mbedtls_hmac_drbg_random_with_add( ctx, output, out_len, NULL, 0 );
ret = mbedtls_hmac_drbg_random_with_add(ctx, output, out_len, NULL, 0);
#if defined(MBEDTLS_THREADING_C)
if( mbedtls_mutex_unlock( &ctx->mutex ) != 0 )
return( MBEDTLS_ERR_THREADING_MUTEX_ERROR );
if (mbedtls_mutex_unlock(&ctx->mutex) != 0)
return (MBEDTLS_ERR_THREADING_MUTEX_ERROR);
#endif
return( ret );
return (ret);
}
/*
* This function resets HMAC_DRBG context to the state immediately
* after initial call of mbedtls_hmac_drbg_init().
*/
void mbedtls_hmac_drbg_free( mbedtls_hmac_drbg_context *ctx )
{
if( ctx == NULL )
void mbedtls_hmac_drbg_free(mbedtls_hmac_drbg_context *ctx) {
if (ctx == NULL)
return;
#if defined(MBEDTLS_THREADING_C)
/* The mutex is initialized iff the md context is set up. */
if( ctx->md_ctx.md_info != NULL )
mbedtls_mutex_free( &ctx->mutex );
if (ctx->md_ctx.md_info != NULL)
mbedtls_mutex_free(&ctx->mutex);
#endif
mbedtls_md_free( &ctx->md_ctx );
mbedtls_platform_zeroize( ctx, sizeof( mbedtls_hmac_drbg_context ) );
mbedtls_md_free(&ctx->md_ctx);
mbedtls_platform_zeroize(ctx, sizeof(mbedtls_hmac_drbg_context));
ctx->reseed_interval = MBEDTLS_HMAC_DRBG_RESEED_INTERVAL;
}
#if defined(MBEDTLS_FS_IO)
int mbedtls_hmac_drbg_write_seed_file( mbedtls_hmac_drbg_context *ctx, const char *path )
{
int mbedtls_hmac_drbg_write_seed_file(mbedtls_hmac_drbg_context *ctx, const char *path) {
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
FILE *f;
unsigned char buf[ MBEDTLS_HMAC_DRBG_MAX_INPUT ];
if( ( f = fopen( path, "wb" ) ) == NULL )
return( MBEDTLS_ERR_HMAC_DRBG_FILE_IO_ERROR );
if ((f = fopen(path, "wb")) == NULL)
return (MBEDTLS_ERR_HMAC_DRBG_FILE_IO_ERROR);
if( ( ret = mbedtls_hmac_drbg_random( ctx, buf, sizeof( buf ) ) ) != 0 )
if ((ret = mbedtls_hmac_drbg_random(ctx, buf, sizeof(buf))) != 0)
goto exit;
if( fwrite( buf, 1, sizeof( buf ), f ) != sizeof( buf ) )
{
if (fwrite(buf, 1, sizeof(buf), f) != sizeof(buf)) {
ret = MBEDTLS_ERR_HMAC_DRBG_FILE_IO_ERROR;
goto exit;
}
@ -457,46 +430,43 @@ int mbedtls_hmac_drbg_write_seed_file( mbedtls_hmac_drbg_context *ctx, const cha
ret = 0;
exit:
fclose( f );
mbedtls_platform_zeroize( buf, sizeof( buf ) );
fclose(f);
mbedtls_platform_zeroize(buf, sizeof(buf));
return( ret );
return (ret);
}
int mbedtls_hmac_drbg_update_seed_file( mbedtls_hmac_drbg_context *ctx, const char *path )
{
int mbedtls_hmac_drbg_update_seed_file(mbedtls_hmac_drbg_context *ctx, const char *path) {
int ret = 0;
FILE *f = NULL;
size_t n;
unsigned char buf[ MBEDTLS_HMAC_DRBG_MAX_INPUT ];
unsigned char c;
if( ( f = fopen( path, "rb" ) ) == NULL )
return( MBEDTLS_ERR_HMAC_DRBG_FILE_IO_ERROR );
if ((f = fopen(path, "rb")) == NULL)
return (MBEDTLS_ERR_HMAC_DRBG_FILE_IO_ERROR);
n = fread( buf, 1, sizeof( buf ), f );
if( fread( &c, 1, 1, f ) != 0 )
{
n = fread(buf, 1, sizeof(buf), f);
if (fread(&c, 1, 1, f) != 0) {
ret = MBEDTLS_ERR_HMAC_DRBG_INPUT_TOO_BIG;
goto exit;
}
if( n == 0 || ferror( f ) )
{
if (n == 0 || ferror(f)) {
ret = MBEDTLS_ERR_HMAC_DRBG_FILE_IO_ERROR;
goto exit;
}
fclose( f );
fclose(f);
f = NULL;
ret = mbedtls_hmac_drbg_update_ret( ctx, buf, n );
ret = mbedtls_hmac_drbg_update_ret(ctx, buf, n);
exit:
mbedtls_platform_zeroize( buf, sizeof( buf ) );
if( f != NULL )
fclose( f );
if( ret != 0 )
return( ret );
return( mbedtls_hmac_drbg_write_seed_file( ctx, path ) );
mbedtls_platform_zeroize(buf, sizeof(buf));
if (f != NULL)
fclose(f);
if (ret != 0)
return (ret);
return (mbedtls_hmac_drbg_write_seed_file(ctx, path));
}
#endif /* MBEDTLS_FS_IO */
@ -505,10 +475,9 @@ exit:
#if !defined(MBEDTLS_SHA1_C)
/* Dummy checkup routine */
int mbedtls_hmac_drbg_self_test( int verbose )
{
int mbedtls_hmac_drbg_self_test(int verbose) {
(void) verbose;
return( 0 );
return (0);
}
#else
@ -520,7 +489,8 @@ static const unsigned char entropy_pr[] = {
0xf7, 0x3e, 0x9c, 0x5b, 0x64, 0xef, 0xd8, 0xca, 0x02, 0x8c, 0xf8, 0x11,
0x48, 0xa5, 0x84, 0xfe, 0x69, 0xab, 0x5a, 0xee, 0x42, 0xaa, 0x4d, 0x42,
0x17, 0x60, 0x99, 0xd4, 0x5e, 0x13, 0x97, 0xdc, 0x40, 0x4d, 0x86, 0xa3,
0x7b, 0xf5, 0x59, 0x54, 0x75, 0x69, 0x51, 0xe4 };
0x7b, 0xf5, 0x59, 0x54, 0x75, 0x69, 0x51, 0xe4
};
static const unsigned char result_pr[OUTPUT_LEN] = {
0x9a, 0x00, 0xa2, 0xd0, 0x0e, 0xd5, 0x9b, 0xfe, 0x31, 0xec, 0xb1, 0x39,
0x9b, 0x60, 0x81, 0x48, 0xd1, 0x96, 0x9d, 0x25, 0x0d, 0x3c, 0x1e, 0x94,
@ -528,14 +498,16 @@ static const unsigned char result_pr[OUTPUT_LEN] = {
0x73, 0x19, 0x70, 0xc0, 0x10, 0x7a, 0xa4, 0x89, 0x25, 0x19, 0x95, 0x5e,
0x4b, 0xc6, 0x00, 0x1d, 0x7f, 0x4e, 0x6a, 0x2b, 0xf8, 0xa3, 0x01, 0xab,
0x46, 0x05, 0x5c, 0x09, 0xa6, 0x71, 0x88, 0xf1, 0xa7, 0x40, 0xee, 0xf3,
0xe1, 0x5c, 0x02, 0x9b, 0x44, 0xaf, 0x03, 0x44 };
0xe1, 0x5c, 0x02, 0x9b, 0x44, 0xaf, 0x03, 0x44
};
/* From a NIST PR=false test vector */
static const unsigned char entropy_nopr[] = {
0x79, 0x34, 0x9b, 0xbf, 0x7c, 0xdd, 0xa5, 0x79, 0x95, 0x57, 0x86, 0x66,
0x21, 0xc9, 0x13, 0x83, 0x11, 0x46, 0x73, 0x3a, 0xbf, 0x8c, 0x35, 0xc8,
0xc7, 0x21, 0x5b, 0x5b, 0x96, 0xc4, 0x8e, 0x9b, 0x33, 0x8c, 0x74, 0xe3,
0xe9, 0x9d, 0xfe, 0xdf };
0xe9, 0x9d, 0xfe, 0xdf
};
static const unsigned char result_nopr[OUTPUT_LEN] = {
0xc6, 0xa1, 0x6a, 0xb8, 0xd4, 0x20, 0x70, 0x6f, 0x0f, 0x34, 0xab, 0x7f,
0xec, 0x5a, 0xdc, 0xa9, 0xd8, 0xca, 0x3a, 0x13, 0x3e, 0x15, 0x9c, 0xa6,
@ -543,17 +515,17 @@ static const unsigned char result_nopr[OUTPUT_LEN] = {
0xff, 0xb1, 0x0d, 0x71, 0x94, 0xf1, 0xc1, 0xa5, 0xcf, 0x73, 0x22, 0xec,
0x1a, 0xe0, 0x96, 0x4e, 0xd4, 0xbf, 0x12, 0x27, 0x46, 0xe0, 0x87, 0xfd,
0xb5, 0xb3, 0xe9, 0x1b, 0x34, 0x93, 0xd5, 0xbb, 0x98, 0xfa, 0xed, 0x49,
0xe8, 0x5f, 0x13, 0x0f, 0xc8, 0xa4, 0x59, 0xb7 };
0xe8, 0x5f, 0x13, 0x0f, 0xc8, 0xa4, 0x59, 0xb7
};
/* "Entropy" from buffer */
static size_t test_offset;
static int hmac_drbg_self_test_entropy( void *data,
unsigned char *buf, size_t len )
{
static int hmac_drbg_self_test_entropy(void *data,
unsigned char *buf, size_t len) {
const unsigned char *p = data;
memcpy( buf, p + test_offset, len );
memcpy(buf, p + test_offset, len);
test_offset += len;
return( 0 );
return (0);
}
#define CHK( c ) if( (c) != 0 ) \
@ -566,62 +538,61 @@ static int hmac_drbg_self_test_entropy( void *data,
/*
* Checkup routine for HMAC_DRBG with SHA-1
*/
int mbedtls_hmac_drbg_self_test( int verbose )
{
int mbedtls_hmac_drbg_self_test(int verbose) {
mbedtls_hmac_drbg_context ctx;
unsigned char buf[OUTPUT_LEN];
const mbedtls_md_info_t *md_info = mbedtls_md_info_from_type( MBEDTLS_MD_SHA1 );
const mbedtls_md_info_t *md_info = mbedtls_md_info_from_type(MBEDTLS_MD_SHA1);
mbedtls_hmac_drbg_init( &ctx );
mbedtls_hmac_drbg_init(&ctx);
/*
* PR = True
*/
if( verbose != 0 )
mbedtls_printf( " HMAC_DRBG (PR = True) : " );
if (verbose != 0)
mbedtls_printf(" HMAC_DRBG (PR = True) : ");
test_offset = 0;
CHK( mbedtls_hmac_drbg_seed( &ctx, md_info,
hmac_drbg_self_test_entropy, (void *) entropy_pr,
NULL, 0 ) );
mbedtls_hmac_drbg_set_prediction_resistance( &ctx, MBEDTLS_HMAC_DRBG_PR_ON );
CHK( mbedtls_hmac_drbg_random( &ctx, buf, OUTPUT_LEN ) );
CHK( mbedtls_hmac_drbg_random( &ctx, buf, OUTPUT_LEN ) );
CHK( memcmp( buf, result_pr, OUTPUT_LEN ) );
mbedtls_hmac_drbg_free( &ctx );
CHK(mbedtls_hmac_drbg_seed(&ctx, md_info,
hmac_drbg_self_test_entropy, (void *) entropy_pr,
NULL, 0));
mbedtls_hmac_drbg_set_prediction_resistance(&ctx, MBEDTLS_HMAC_DRBG_PR_ON);
CHK(mbedtls_hmac_drbg_random(&ctx, buf, OUTPUT_LEN));
CHK(mbedtls_hmac_drbg_random(&ctx, buf, OUTPUT_LEN));
CHK(memcmp(buf, result_pr, OUTPUT_LEN));
mbedtls_hmac_drbg_free(&ctx);
mbedtls_hmac_drbg_free( &ctx );
mbedtls_hmac_drbg_free(&ctx);
if( verbose != 0 )
mbedtls_printf( "passed\n" );
if (verbose != 0)
mbedtls_printf("passed\n");
/*
* PR = False
*/
if( verbose != 0 )
mbedtls_printf( " HMAC_DRBG (PR = False) : " );
if (verbose != 0)
mbedtls_printf(" HMAC_DRBG (PR = False) : ");
mbedtls_hmac_drbg_init( &ctx );
mbedtls_hmac_drbg_init(&ctx);
test_offset = 0;
CHK( mbedtls_hmac_drbg_seed( &ctx, md_info,
hmac_drbg_self_test_entropy, (void *) entropy_nopr,
NULL, 0 ) );
CHK( mbedtls_hmac_drbg_reseed( &ctx, NULL, 0 ) );
CHK( mbedtls_hmac_drbg_random( &ctx, buf, OUTPUT_LEN ) );
CHK( mbedtls_hmac_drbg_random( &ctx, buf, OUTPUT_LEN ) );
CHK( memcmp( buf, result_nopr, OUTPUT_LEN ) );
mbedtls_hmac_drbg_free( &ctx );
CHK(mbedtls_hmac_drbg_seed(&ctx, md_info,
hmac_drbg_self_test_entropy, (void *) entropy_nopr,
NULL, 0));
CHK(mbedtls_hmac_drbg_reseed(&ctx, NULL, 0));
CHK(mbedtls_hmac_drbg_random(&ctx, buf, OUTPUT_LEN));
CHK(mbedtls_hmac_drbg_random(&ctx, buf, OUTPUT_LEN));
CHK(memcmp(buf, result_nopr, OUTPUT_LEN));
mbedtls_hmac_drbg_free(&ctx);
mbedtls_hmac_drbg_free( &ctx );
mbedtls_hmac_drbg_free(&ctx);
if( verbose != 0 )
mbedtls_printf( "passed\n" );
if (verbose != 0)
mbedtls_printf("passed\n");
if( verbose != 0 )
mbedtls_printf( "\n" );
if (verbose != 0)
mbedtls_printf("\n");
return( 0 );
return (0);
}
#endif /* MBEDTLS_SHA1_C */
#endif /* MBEDTLS_SELF_TEST */