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CTR_DRBG: deprecate mbedtls_ctr_drbg_update because it ignores errors

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Deprecate mbedtls_ctr_drbg_update (which returns void) in favor of a
new function mbedtls_ctr_drbg_update_ret which reports error.
This commit is contained in:
Gilles Peskine 2018-09-11 16:41:54 +02:00
parent 1b09f4027e
commit d919993b76
3 changed files with 67 additions and 18 deletions
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36
include/mbedtls/ctr_drbg.h
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@ -248,9 +248,12 @@ int mbedtls_ctr_drbg_reseed( mbedtls_ctr_drbg_context *ctx,
* \param additional The data to update the state with.
* \param add_len Length of \p additional data.
*
* \return \c 0 on success.
* \return An error from the underlying AES cipher on failure.
*/
void mbedtls_ctr_drbg_update( mbedtls_ctr_drbg_context *ctx,
const unsigned char *additional, size_t add_len );
int mbedtls_ctr_drbg_update_ret( mbedtls_ctr_drbg_context *ctx,
const unsigned char *additional,
size_t add_len );
/**
* \brief This function updates a CTR_DRBG instance with additional
@ -290,6 +293,35 @@ int mbedtls_ctr_drbg_random_with_add( void *p_rng,
int mbedtls_ctr_drbg_random( void *p_rng,
unsigned char *output, size_t output_len );
#if ! defined(MBEDTLS_DEPRECATED_REMOVED)
#if defined(MBEDTLS_DEPRECATED_WARNING)
#define MBEDTLS_DEPRECATED __attribute__((deprecated))
#else
#define MBEDTLS_DEPRECATED
#endif
/**
* \brief This function updates the state of the CTR_DRBG context.
*
* \deprecated Superseded by mbedtls_ctr_drbg_update_ret()
* in 2.16.0.
*
* \note If \p add_len is greater than
* #MBEDTLS_CTR_DRBG_MAX_SEED_INPUT, only the first
* #MBEDTLS_CTR_DRBG_MAX_SEED_INPUT Bytes are used.
* The remaining Bytes are silently discarded.
*
* \param ctx The CTR_DRBG context.
* \param additional The data to update the state with.
* \param add_len Length of \p additional data.
*/
MBEDTLS_DEPRECATED void mbedtls_ctr_drbg_update(
mbedtls_ctr_drbg_context *ctx,
const unsigned char *additional,
size_t add_len );
#undef MBEDTLS_DEPRECATED
#endif /* !MBEDTLS_DEPRECATED_REMOVED */
#if defined(MBEDTLS_FS_IO)
/**
* \brief This function writes a seed file.