int tls1_check_ec_tmp_key(SSL *s, unsigned long cid)
	{
	unsigned char curve_id[2];
	EC_KEY *ec = s->cert->ecdh_tmp;
#ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
	/* Allow any curve: not just those peer supports */
	if (s->cert->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
		return 1;
#endif
	/* If Suite B, AES128 MUST use P-256 and AES256 MUST use P-384,
	 * no other curves permitted.
	 */
	if (tls1_suiteb(s))
		{
		/* Curve to check determined by ciphersuite */
		if (cid == TLS1_CK_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256)
			curve_id[1] = TLSEXT_curve_P_256;
		else if (cid == TLS1_CK_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384)
			curve_id[1] = TLSEXT_curve_P_384;
		else
			return 0;
		curve_id[0] = 0;
		/* Check this curve is acceptable */
		if (!tls1_check_ec_key(s, curve_id, NULL))
			return 0;
		/* If auto or setting curve from callback assume OK */
		if (s->cert->ecdh_tmp_auto || s->cert->ecdh_tmp_cb)
			return 1;
		/* Otherwise check curve is acceptable */
		else 
			{
			unsigned char curve_tmp[2];
			if (!ec)
				return 0;
			if (!tls1_set_ec_id(curve_tmp, NULL, ec))
				return 0;
			if (!curve_tmp[0] || curve_tmp[1] == curve_id[1])
				return 1;
			return 0;
			}
			
		}
	if (s->cert->ecdh_tmp_auto)
		{
		/* Need a shared curve */
		if (tls1_shared_curve(s, 0))
			return 1;
		else return 0;
		}
	if (!ec)
		{
		if (s->cert->ecdh_tmp_cb)
			return 1;
		else
			return 0;
		}
	if (!tls1_set_ec_id(curve_id, NULL, ec))
		return 0;
/* Set this to allow use of invalid curves for testing */
#if 0
	return 1;
#else
	return tls1_check_ec_key(s, curve_id, NULL);
#endif
	}

Unknown