72 int mbedtls_ecdsa_sign( mbedtls_ecp_group *grp, mbedtls_mpi *r, mbedtls_mpi *s,  in mbedtls_ecdsa_sign()  argument
134         MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( s, r, d ) );  in mbedtls_ecdsa_sign()
135         MBEDTLS_MPI_CHK( mbedtls_mpi_add_mpi( &e, &e, s ) );  in mbedtls_ecdsa_sign()
138         MBEDTLS_MPI_CHK( mbedtls_mpi_inv_mod( s, &k, &grp->N ) );  in mbedtls_ecdsa_sign()
139         MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( s, s, &e ) );  in mbedtls_ecdsa_sign()
140         MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( s, s, &grp->N ) );  in mbedtls_ecdsa_sign()
148     while( mbedtls_mpi_cmp_int( s, 0 ) == 0 );  in mbedtls_ecdsa_sign()
161 int mbedtls_ecdsa_sign_det( mbedtls_ecp_group *grp, mbedtls_mpi *r, mbedtls_mpi *s,  in mbedtls_ecdsa_sign_det()  argument
184     ret = mbedtls_ecdsa_sign( grp, r, s, d, buf, blen,  in mbedtls_ecdsa_sign_det()
201                   const mbedtls_ecp_point *Q, const mbedtls_mpi *r, const mbedtls_mpi *s)  in mbedtls_ecdsa_verify()  argument
218         mbedtls_mpi_cmp_int( s, 1 ) < 0 || mbedtls_mpi_cmp_mpi( s, &grp->N ) >= 0 )  in mbedtls_ecdsa_verify()
237     MBEDTLS_MPI_CHK( mbedtls_mpi_inv_mod( &s_inv, s, &grp->N ) );  in mbedtls_ecdsa_verify()
284 static int ecdsa_signature_to_asn1( const mbedtls_mpi *r, const mbedtls_mpi *s,  in ecdsa_signature_to_asn1()  argument
292     MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_mpi( &p, buf, s ) );  in ecdsa_signature_to_asn1()
315     mbedtls_mpi r, s;  in mbedtls_ecdsa_write_signature()  local
318     mbedtls_mpi_init( &s );  in mbedtls_ecdsa_write_signature()
324     MBEDTLS_MPI_CHK( mbedtls_ecdsa_sign_det( &ctx->grp, &r, &s, &ctx->d,  in mbedtls_ecdsa_write_signature()
329     MBEDTLS_MPI_CHK( mbedtls_ecdsa_sign( &ctx->grp, &r, &s, &ctx->d,  in mbedtls_ecdsa_write_signature()
333     MBEDTLS_MPI_CHK( ecdsa_signature_to_asn1( &r, &s, sig, slen ) );  in mbedtls_ecdsa_write_signature()
337     mbedtls_mpi_free( &s );  in mbedtls_ecdsa_write_signature()
365     mbedtls_mpi r, s;  in mbedtls_ecdsa_read_signature()  local
368     mbedtls_mpi_init( &s );  in mbedtls_ecdsa_read_signature()
385         ( ret = mbedtls_asn1_get_mpi( &p, end, &s ) ) != 0 )  in mbedtls_ecdsa_read_signature()
392                               &ctx->Q, &r, &s ) ) != 0 )  in mbedtls_ecdsa_read_signature()
400     mbedtls_mpi_free( &s );  in mbedtls_ecdsa_read_signature()