/* * Parse the ServerKeyExchange parameters */ int dhm_read_params( dhm_context *ctx, unsigned char **p, const unsigned char *end ) { int ret, n; memset( ctx, 0, sizeof( dhm_context ) ); if( ( ret = dhm_read_bignum( &ctx->P, p, end ) ) != 0 || ( ret = dhm_read_bignum( &ctx->G, p, end ) ) != 0 || ( ret = dhm_read_bignum( &ctx->GY, p, end ) ) != 0 ) return( ret ); if( ( ret = dhm_check_range( &ctx->GY, &ctx->P ) ) != 0 ) return( ret ); ctx->len = mpi_size( &ctx->P ); if( end - *p < 2 ) return( POLARSSL_ERR_DHM_BAD_INPUT_DATA ); n = ( (*p)[0] << 8 ) | (*p)[1]; (*p) += 2; if( end != *p + n ) return( POLARSSL_ERR_DHM_BAD_INPUT_DATA ); return( 0 ); }
/* * Parse the ServerKeyExchange parameters */ int mbedtls_dhm_read_params( mbedtls_dhm_context *ctx, unsigned char **p, const unsigned char *end ) { int ret; if( ( ret = dhm_read_bignum( &ctx->P, p, end ) ) != 0 || ( ret = dhm_read_bignum( &ctx->G, p, end ) ) != 0 || ( ret = dhm_read_bignum( &ctx->GY, p, end ) ) != 0 ) return( ret ); if( ( ret = dhm_check_range( &ctx->GY, &ctx->P ) ) != 0 ) return( ret ); ctx->len = mbedtls_mpi_size( &ctx->P ); return( 0 ); }