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CTR_DRBG: Document the maximum size of some parameters

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Gilles Peskine 2019-09-24 14:48:30 +02:00
parent 6b2c50c01f
commit 80b3f4b20a
1 changed files with 12 additions and 0 deletions
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12
include/mbedtls/ctr_drbg.h
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@ -195,6 +195,8 @@ void mbedtls_ctr_drbg_init( mbedtls_ctr_drbg_context *ctx );
* personalization data is empty regardless of the value
* of \p len.
* \param len The length of the personalization data.
* This must be at most
* #MBEDTLS_CTR_DRBG_MAX_SEED_INPUT / 2.
*
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED on failure.
@ -234,6 +236,7 @@ void mbedtls_ctr_drbg_set_prediction_resistance( mbedtls_ctr_drbg_context *ctx,
*
* \param ctx The CTR_DRBG context.
* \param len The amount of entropy to grab, in bytes.
* This must be at most #MBEDTLS_CTR_DRBG_MAX_SEED_INPUT.
*/
void mbedtls_ctr_drbg_set_entropy_len( mbedtls_ctr_drbg_context *ctx,
size_t len );
@ -255,6 +258,10 @@ void mbedtls_ctr_drbg_set_reseed_interval( mbedtls_ctr_drbg_context *ctx,
* \param ctx The CTR_DRBG context.
* \param additional Additional data to add to the state. Can be NULL.
* \param len The length of the additional data.
* This must be less than
* #MBEDTLS_CTR_DRBG_MAX_SEED_INPUT - \c entropy_len
* where \c entropy_len is the entropy length
* configured for the context.
*
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED on failure.
@ -296,6 +303,11 @@ int mbedtls_ctr_drbg_update_ret( mbedtls_ctr_drbg_context *ctx,
* the value of \p add_len.
* \param add_len The length of the additional data
* if \p additional is non-null.
* This must be less than #MBEDTLS_CTR_DRBG_MAX_INPUT
* and less than
* #MBEDTLS_CTR_DRBG_MAX_SEED_INPUT - \c entropy_len
* where \c entropy_len is the entropy length
* configured for the context.
*
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED or