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Remove lines above 80 characters in library/ctr_drbg.c

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This commit is contained in:
Hanno Becker 2018-10-05 09:38:59 +01:00
parent 0592ea772a
commit a08651f484
1 changed files with 50 additions and 26 deletions
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76
library/ctr_drbg.c
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@ -90,7 +90,8 @@ int mbedtls_ctr_drbg_seed_entropy_len(
/*
* Initialize with an empty key
*/
if( ( ret = mbedtls_aes_setkey_enc( &ctx->aes_ctx, key, MBEDTLS_CTR_DRBG_KEYBITS ) ) != 0 )
if( ( ret = mbedtls_aes_setkey_enc( &ctx->aes_ctx, key,
MBEDTLS_CTR_DRBG_KEYBITS ) ) != 0 )
{
return( ret );
}
@ -108,8 +109,9 @@ int mbedtls_ctr_drbg_seed( mbedtls_ctr_drbg_context *ctx,
const unsigned char *custom,
size_t len )
{
return( mbedtls_ctr_drbg_seed_entropy_len( ctx, f_entropy, p_entropy, custom, len,
MBEDTLS_CTR_DRBG_ENTROPY_LEN ) );
return( mbedtls_ctr_drbg_seed_entropy_len( ctx, f_entropy, p_entropy,
custom, len,
MBEDTLS_CTR_DRBG_ENTROPY_LEN ) );
}
void mbedtls_ctr_drbg_free( mbedtls_ctr_drbg_context *ctx )
@ -124,17 +126,20 @@ void mbedtls_ctr_drbg_free( mbedtls_ctr_drbg_context *ctx )
mbedtls_platform_zeroize( ctx, sizeof( mbedtls_ctr_drbg_context ) );
}
void mbedtls_ctr_drbg_set_prediction_resistance( mbedtls_ctr_drbg_context *ctx, int resistance )
void mbedtls_ctr_drbg_set_prediction_resistance( mbedtls_ctr_drbg_context *ctx,
int resistance )
{
ctx->prediction_resistance = resistance;
}
void mbedtls_ctr_drbg_set_entropy_len( mbedtls_ctr_drbg_context *ctx, size_t len )
void mbedtls_ctr_drbg_set_entropy_len( mbedtls_ctr_drbg_context *ctx,
size_t len )
{
ctx->entropy_len = len;
}
void mbedtls_ctr_drbg_set_reseed_interval( mbedtls_ctr_drbg_context *ctx, int interval )
void mbedtls_ctr_drbg_set_reseed_interval( mbedtls_ctr_drbg_context *ctx,
int interval )
{
ctx->reseed_interval = interval;
}
@ -142,7 +147,8 @@ void mbedtls_ctr_drbg_set_reseed_interval( mbedtls_ctr_drbg_context *ctx, int in
static int block_cipher_df( unsigned char *output,
const unsigned char *data, size_t data_len )
{
unsigned char buf[MBEDTLS_CTR_DRBG_MAX_SEED_INPUT + MBEDTLS_CTR_DRBG_BLOCKSIZE + 16];
unsigned char buf[MBEDTLS_CTR_DRBG_MAX_SEED_INPUT +
MBEDTLS_CTR_DRBG_BLOCKSIZE + 16];
unsigned char tmp[MBEDTLS_CTR_DRBG_SEEDLEN];
unsigned char key[MBEDTLS_CTR_DRBG_KEYSIZE];
unsigned char chain[MBEDTLS_CTR_DRBG_BLOCKSIZE];
@ -156,7 +162,8 @@ static int block_cipher_df( unsigned char *output,
if( data_len > MBEDTLS_CTR_DRBG_MAX_SEED_INPUT )
return( MBEDTLS_ERR_CTR_DRBG_INPUT_TOO_BIG );
memset( buf, 0, MBEDTLS_CTR_DRBG_MAX_SEED_INPUT + MBEDTLS_CTR_DRBG_BLOCKSIZE + 16 );
memset( buf, 0, MBEDTLS_CTR_DRBG_MAX_SEED_INPUT +
MBEDTLS_CTR_DRBG_BLOCKSIZE + 16 );
mbedtls_aes_init( &aes_ctx );
/*
@ -181,7 +188,8 @@ static int block_cipher_df( unsigned char *output,
for( i = 0; i < MBEDTLS_CTR_DRBG_KEYSIZE; i++ )
key[i] = i;
if( ( ret = mbedtls_aes_setkey_enc( &aes_ctx, key, MBEDTLS_CTR_DRBG_KEYBITS ) ) != 0 )
if( ( ret = mbedtls_aes_setkey_enc( &aes_ctx, key,
MBEDTLS_CTR_DRBG_KEYBITS ) ) != 0 )
{
goto exit;
}
@ -203,7 +211,8 @@ static int block_cipher_df( unsigned char *output,
use_len -= ( use_len >= MBEDTLS_CTR_DRBG_BLOCKSIZE ) ?
MBEDTLS_CTR_DRBG_BLOCKSIZE : use_len;
if( ( ret = mbedtls_aes_crypt_ecb( &aes_ctx, MBEDTLS_AES_ENCRYPT, chain, chain ) ) != 0 )
if( ( ret = mbedtls_aes_crypt_ecb( &aes_ctx, MBEDTLS_AES_ENCRYPT,
chain, chain ) ) != 0 )
{
goto exit;
}
@ -220,7 +229,8 @@ static int block_cipher_df( unsigned char *output,
/*
* Do final encryption with reduced data
*/
if( ( ret = mbedtls_aes_setkey_enc( &aes_ctx, tmp, MBEDTLS_CTR_DRBG_KEYBITS ) ) != 0 )
if( ( ret = mbedtls_aes_setkey_enc( &aes_ctx, tmp,
MBEDTLS_CTR_DRBG_KEYBITS ) ) != 0 )
{
goto exit;
}
@ -229,7 +239,8 @@ static int block_cipher_df( unsigned char *output,
for( j = 0; j < MBEDTLS_CTR_DRBG_SEEDLEN; j += MBEDTLS_CTR_DRBG_BLOCKSIZE )
{
if( ( ret = mbedtls_aes_crypt_ecb( &aes_ctx, MBEDTLS_AES_ENCRYPT, iv, iv ) ) != 0 )
if( ( ret = mbedtls_aes_crypt_ecb( &aes_ctx, MBEDTLS_AES_ENCRYPT,
iv, iv ) ) != 0 )
{
goto exit;
}
@ -257,7 +268,7 @@ exit:
}
static int ctr_drbg_update_internal( mbedtls_ctr_drbg_context *ctx,
const unsigned char data[MBEDTLS_CTR_DRBG_SEEDLEN] )
const unsigned char data[MBEDTLS_CTR_DRBG_SEEDLEN] )
{
unsigned char tmp[MBEDTLS_CTR_DRBG_SEEDLEN];
unsigned char *p = tmp;
@ -278,7 +289,8 @@ static int ctr_drbg_update_internal( mbedtls_ctr_drbg_context *ctx,
/*
* Crypt counter block
*/
if( ( ret = mbedtls_aes_crypt_ecb( &ctx->aes_ctx, MBEDTLS_AES_ENCRYPT, ctx->counter, p ) ) != 0 )
if( ( ret = mbedtls_aes_crypt_ecb( &ctx->aes_ctx, MBEDTLS_AES_ENCRYPT,
ctx->counter, p ) ) != 0 )
{
return( ret );
}
@ -292,11 +304,13 @@ static int ctr_drbg_update_internal( mbedtls_ctr_drbg_context *ctx,
/*
* Update key and counter
*/
if( ( ret = mbedtls_aes_setkey_enc( &ctx->aes_ctx, tmp, MBEDTLS_CTR_DRBG_KEYBITS ) ) != 0 )
if( ( ret = mbedtls_aes_setkey_enc( &ctx->aes_ctx, tmp,
MBEDTLS_CTR_DRBG_KEYBITS ) ) != 0 )
{
return( ret );
}
memcpy( ctx->counter, tmp + MBEDTLS_CTR_DRBG_KEYSIZE, MBEDTLS_CTR_DRBG_BLOCKSIZE );
memcpy( ctx->counter, tmp + MBEDTLS_CTR_DRBG_KEYSIZE,
MBEDTLS_CTR_DRBG_BLOCKSIZE );
return( 0 );
}
@ -425,13 +439,14 @@ int mbedtls_ctr_drbg_random_with_add( void *p_rng,
/*
* Crypt counter block
*/
if( ( ret = mbedtls_aes_crypt_ecb( &ctx->aes_ctx, MBEDTLS_AES_ENCRYPT, ctx->counter, tmp ) ) != 0 )
if( ( ret = mbedtls_aes_crypt_ecb( &ctx->aes_ctx, MBEDTLS_AES_ENCRYPT,
ctx->counter, tmp ) ) != 0 )
{
return( ret );
}
use_len = ( output_len > MBEDTLS_CTR_DRBG_BLOCKSIZE ) ? MBEDTLS_CTR_DRBG_BLOCKSIZE :
output_len;
use_len = ( output_len > MBEDTLS_CTR_DRBG_BLOCKSIZE )
? MBEDTLS_CTR_DRBG_BLOCKSIZE : output_len;
/*
* Copy random block to destination
*/
@ -450,7 +465,8 @@ int mbedtls_ctr_drbg_random_with_add( void *p_rng,
return( 0 );
}
int mbedtls_ctr_drbg_random( void *p_rng, unsigned char *output, size_t output_len )
int mbedtls_ctr_drbg_random( void *p_rng, unsigned char *output,
size_t output_len )
{
int ret;
mbedtls_ctr_drbg_context *ctx = (mbedtls_ctr_drbg_context *) p_rng;
@ -471,7 +487,8 @@ int mbedtls_ctr_drbg_random( void *p_rng, unsigned char *output, size_t output_l
}
#if defined(MBEDTLS_FS_IO)
int mbedtls_ctr_drbg_write_seed_file( mbedtls_ctr_drbg_context *ctx, const char *path )
int mbedtls_ctr_drbg_write_seed_file( mbedtls_ctr_drbg_context *ctx,
const char *path )
{
int ret = MBEDTLS_ERR_CTR_DRBG_FILE_IO_ERROR;
FILE *f;
@ -480,13 +497,19 @@ int mbedtls_ctr_drbg_write_seed_file( mbedtls_ctr_drbg_context *ctx, const char
if( ( f = fopen( path, "wb" ) ) == NULL )
return( MBEDTLS_ERR_CTR_DRBG_FILE_IO_ERROR );
if( ( ret = mbedtls_ctr_drbg_random( ctx, buf, MBEDTLS_CTR_DRBG_MAX_INPUT ) ) != 0 )
if( ( ret = mbedtls_ctr_drbg_random( ctx, buf,
MBEDTLS_CTR_DRBG_MAX_INPUT ) ) != 0 )
goto exit;
if( fwrite( buf, 1, MBEDTLS_CTR_DRBG_MAX_INPUT, f ) != MBEDTLS_CTR_DRBG_MAX_INPUT )
if( fwrite( buf, 1, MBEDTLS_CTR_DRBG_MAX_INPUT, f ) !=
MBEDTLS_CTR_DRBG_MAX_INPUT )
{
ret = MBEDTLS_ERR_CTR_DRBG_FILE_IO_ERROR;
}
else
{
ret = 0;
}
exit:
mbedtls_platform_zeroize( buf, sizeof( buf ) );
@ -495,7 +518,8 @@ exit:
return( ret );
}
int mbedtls_ctr_drbg_update_seed_file( mbedtls_ctr_drbg_context *ctx, const char *path )
int mbedtls_ctr_drbg_update_seed_file( mbedtls_ctr_drbg_context *ctx,
const char *path )
{
int ret = 0;
FILE *f;
@ -608,7 +632,7 @@ int mbedtls_ctr_drbg_self_test( int verbose )
test_offset = 0;
CHK( mbedtls_ctr_drbg_seed_entropy_len( &ctx, ctr_drbg_self_test_entropy,
(void *) entropy_source_pr, nonce_pers_pr, 16, 32 ) );
(void *) entropy_source_pr, nonce_pers_pr, 16, 32 ) );
mbedtls_ctr_drbg_set_prediction_resistance( &ctx, MBEDTLS_CTR_DRBG_PR_ON );
CHK( mbedtls_ctr_drbg_random( &ctx, buf, MBEDTLS_CTR_DRBG_BLOCKSIZE ) );
CHK( mbedtls_ctr_drbg_random( &ctx, buf, MBEDTLS_CTR_DRBG_BLOCKSIZE ) );
@ -629,7 +653,7 @@ int mbedtls_ctr_drbg_self_test( int verbose )
test_offset = 0;
CHK( mbedtls_ctr_drbg_seed_entropy_len( &ctx, ctr_drbg_self_test_entropy,
(void *) entropy_source_nopr, nonce_pers_nopr, 16, 32 ) );
(void *) entropy_source_nopr, nonce_pers_nopr, 16, 32 ) );
CHK( mbedtls_ctr_drbg_random( &ctx, buf, 16 ) );
CHK( mbedtls_ctr_drbg_reseed( &ctx, NULL, 0 ) );
CHK( mbedtls_ctr_drbg_random( &ctx, buf, 16 ) );