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Split mbedtls_hmac_drbg_init() -> seed{,_buf}()

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This commit is contained in:
Manuel Pégourié-Gonnard 2015-04-28 22:07:14 +02:00
parent c34e8dd265
commit f9e9481bc5
6 changed files with 53 additions and 22 deletions
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4
library/ecdsa.c
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@ -174,13 +174,13 @@ int mbedtls_ecdsa_sign_det( mbedtls_ecp_group *grp, mbedtls_mpi *r, mbedtls_mpi
return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
mbedtls_mpi_init( &h );
memset( &rng_ctx, 0, sizeof( mbedtls_hmac_drbg_context ) );
mbedtls_hmac_drbg_init( &rng_ctx );
/* Use private key and message hash (reduced) to initialize HMAC_DRBG */
MBEDTLS_MPI_CHK( mbedtls_mpi_write_binary( d, data, grp_len ) );
MBEDTLS_MPI_CHK( derive_mpi( grp, &h, buf, blen ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_write_binary( &h, data + grp_len, grp_len ) );
mbedtls_hmac_drbg_init_buf( &rng_ctx, md_info, data, 2 * grp_len );
mbedtls_hmac_drbg_seed_buf( &rng_ctx, md_info, data, 2 * grp_len );
ret = mbedtls_ecdsa_sign( grp, r, s, d, buf, blen,
mbedtls_hmac_drbg_random, &rng_ctx );