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- Addedd writing and updating of seedfiles as functions to CTR_DRBG

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This commit is contained in:
Paul Bakker 2011-12-05 13:23:51 +00:00
parent 1c70d409ad
commit fc754a9178
4 changed files with 105 additions and 1 deletions
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26
include/polarssl/ctr_drbg.h
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@ -152,7 +152,7 @@ int ctr_drbg_reseed( ctr_drbg_context *ctx,
* \param add_len Length of additional data
*/
void ctr_drbg_update( ctr_drbg_context *ctx,
const unsigned char *additional, size_t add_len );
const unsigned char *additional, size_t add_len );
/**
* \brief CTR_DRBG generate random with additional update input
@ -189,6 +189,30 @@ int ctr_drbg_random_with_add( void *p_rng,
int ctr_drbg_random( void *p_rng,
unsigned char *output, size_t output_len );
#if defined(POLARSSL_FS_IO)
/**
* \brief Write a seed file
*
* \param path Name of the file
*
* \return 0 if successful, 1 on file error, or
* POLARSSL_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED
*/
int ctr_drbg_write_seed_file( ctr_drbg_context *ctx, const char *path );
/**
* \brief Read and update a seed file. Seed is added to this
* instance
*
* \param path Name of the file
*
* \return 0 if successful, 1 on file error,
* POLARSSL_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED or
* POLARSSL_ERR_CTR_DRBG_INPUT_TOO_BIG
*/
int ctr_drbg_update_seed_file( ctr_drbg_context *ctx, const char *path );
#endif
/**
* \brief Checkup routine
*