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hmac_drbg: set_entropy_len can now return an error

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Make mbedtls_hmac_drbg_set_entropy_len return an error
in case of a too long entropy length setting.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
This commit is contained in:
Andrzej Kurek 2020-07-18 06:05:03 -04:00
parent 9167aa96f8
commit 6bc37fa4e2
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GPG key ID: 89A90840DC388527
3 changed files with 11 additions and 5 deletions
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6
library/hmac_drbg.c
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@ -390,9 +390,13 @@ void mbedtls_hmac_drbg_set_prediction_resistance( mbedtls_hmac_drbg_context *ctx
/*
* Set entropy length grabbed for seeding
*/
void mbedtls_hmac_drbg_set_entropy_len( mbedtls_hmac_drbg_context *ctx, size_t len )
int mbedtls_hmac_drbg_set_entropy_len( mbedtls_hmac_drbg_context *ctx, size_t len )
{
if( len > MBEDTLS_HMAC_DRBG_MAX_INPUT )
return( MBEDTLS_ERR_HMAC_DRBG_INPUT_TOO_BIG );
ctx->entropy_len = len;
return 0;
}
/*