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HMAC_DRBG: note that the initial seeding grabs entropy for the nonce

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Gilles Peskine 2019-10-01 18:41:12 +02:00
parent 217b8159da
commit 5d9fd07938
1 changed files with 3 additions and 0 deletions
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include/mbedtls/hmac_drbg.h
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@ -224,6 +224,9 @@ void mbedtls_hmac_drbg_set_prediction_resistance( mbedtls_hmac_drbg_context *ctx
* \brief This function sets the amount of entropy grabbed on each * \brief This function sets the amount of entropy grabbed on each
* seed or reseed. * seed or reseed.
* *
* During the initial seeding, mbedtls_hmac_drbg_seed() additionally grabs
* half this amount to create the nonce.
*
* The default value is given by the security strength, which depends on the * The default value is given by the security strength, which depends on the
* hash used. See the documentation of mbedtls_hmac_drbg_seed() for details. * hash used. See the documentation of mbedtls_hmac_drbg_seed() for details.
* *