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ECDH: Enable Everest Curve25519 in ECDH/ECDSA/ECP

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This commit is contained in:
Christoph M. Wintersteiger
2018-10-25 13:03:05 +01:00
committed by Janos Follath
parent 696dedaed6
commit c9f737b4ba
3 changed files with 46 additions and 3 deletions
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6
library/ecdsa.c
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@ -263,8 +263,10 @@ static int ecdsa_sign_restartable( mbedtls_ecp_group *grp,
mbedtls_mpi *pk = &k, *pr = r;
/* Fail cleanly on curves such as Curve25519 that can't be used for ECDSA */
if( grp->N.p == NULL )
return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
if( grp->id == MBEDTLS_ECP_DP_CURVE25519 ||
grp->id == MBEDTLS_ECP_DP_CURVE448 ||
grp->N.p == NULL )
return( MBEDTLS_ERR_MD_FEATURE_UNAVAILABLE );
/* Make sure d is in range 1..n-1 */
if( mbedtls_mpi_cmp_int( d, 1 ) < 0 || mbedtls_mpi_cmp_mpi( d, &grp->N ) >= 0 )