Adding upstream version 3.7.9.upstream/3.7.9upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 95 insertions, 0 deletions

diff --git a/lib/nettle/int/ecdsa-compute-k.c b/lib/nettle/int/ecdsa-compute-k.c
new file mode 100644
index 0000000..94914eb
--- /dev/null
+++ b/lib/nettle/int/ecdsa-compute-k.c
@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2019 Red Hat, Inc.
+ *
+ * Author: Daiki Ueno
+ *
+ * This file is part of GNUTLS.
+ *
+ * The GNUTLS library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>
+ *
+ */
+
+#if HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include "ecdsa-compute-k.h"
+
+#include "dsa-compute-k.h"
+#include "gnutls_int.h"
+
+static inline int
+_gnutls_ecc_curve_to_dsa_q(mpz_t *q, gnutls_ecc_curve_t curve)
+{
+	switch (curve) {
+#ifdef ENABLE_NON_SUITEB_CURVES
+	case GNUTLS_ECC_CURVE_SECP192R1:
+		mpz_init_set_str(*q,
+				 "FFFFFFFFFFFFFFFFFFFFFFFF99DEF836"
+				 "146BC9B1B4D22831",
+				 16);
+		return 0;
+	case GNUTLS_ECC_CURVE_SECP224R1:
+		mpz_init_set_str(*q,
+				 "FFFFFFFFFFFFFFFFFFFFFFFFFFFF16A2"
+				 "E0B8F03E13DD29455C5C2A3D",
+				 16);
+		return 0;
+#endif
+	case GNUTLS_ECC_CURVE_SECP256R1:
+		mpz_init_set_str(*q,
+				 "FFFFFFFF00000000FFFFFFFFFFFFFFFF"
+				 "BCE6FAADA7179E84F3B9CAC2FC632551",
+				 16);
+		return 0;
+	case GNUTLS_ECC_CURVE_SECP384R1:
+		mpz_init_set_str(*q,
+				 "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
+				 "FFFFFFFFFFFFFFFFC7634D81F4372DDF"
+				 "581A0DB248B0A77AECEC196ACCC52973",
+				 16);
+		return 0;
+	case GNUTLS_ECC_CURVE_SECP521R1:
+		mpz_init_set_str(*q,
+				 "1FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
+				 "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
+				 "FFA51868783BF2F966B7FCC0148F709A"
+				 "5D03BB5C9B8899C47AEBB6FB71E91386"
+				 "409",
+				 16);
+		return 0;
+	default:
+		return gnutls_assert_val(GNUTLS_E_UNSUPPORTED_SIGNATURE_ALGORITHM);
+	}
+}
+
+int
+_gnutls_ecdsa_compute_k (mpz_t k,
+			 gnutls_ecc_curve_t curve,
+			 const mpz_t x,
+			 gnutls_mac_algorithm_t mac,
+			 const uint8_t *digest,
+			 size_t length)
+{
+	mpz_t q;
+	int ret;
+
+	ret = _gnutls_ecc_curve_to_dsa_q(&q, curve);
+	if (ret < 0)
+		return gnutls_assert_val(ret);
+
+	ret = _gnutls_dsa_compute_k (k, q, x, mac, digest, length);
+	mpz_clear(q);
+	return ret;
+}