2G ems initial

2024-03-13 09:30:40 +08:00
commit eed6460ad2
1234 changed files with 419571 additions and 0 deletions
--- a/include/nettle/bignum.h
+++ b/include/nettle/bignum.h
@@ -0,0 +1,140 @@
+/* bignum.h
+
+   Bignum operations that are missing from gmp.
+
+   Copyright (C) 2001 Niels Möller
+
+   This file is part of GNU Nettle.
+
+   GNU Nettle is free software: you can redistribute it and/or
+   modify it under the terms of either:
+
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
+
+   GNU Nettle 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
+   General Public License for more details.
+
+   You should have received copies of the GNU General Public License and
+   the GNU Lesser General Public License along with this program.  If
+   not, see http://www.gnu.org/licenses/.
+*/
+ 
+#ifndef NETTLE_BIGNUM_H_INCLUDED
+#define NETTLE_BIGNUM_H_INCLUDED
+
+#include "nettle-meta.h"
+
+#include "nettle-types.h"
+
+/* For NETTLE_USE_MINI_GMP */
+#include "version.h"
+
+#if NETTLE_USE_MINI_GMP
+# include "mini-gmp.h"
+
+# define GMP_NUMB_MASK (~(mp_limb_t) 0)
+
+/* Function missing in older gmp versions, and checked for with ifdef */
+# define mpz_limbs_read mpz_limbs_read
+/* Side-channel silent powm not available in mini-gmp. */
+# define mpz_powm_sec mpz_powm
+#else
+# include <gmp.h>
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Size needed for signed encoding, including extra sign byte if
+ * necessary. */
+size_t
+nettle_mpz_sizeinbase_256_s(const mpz_t x);
+
+/* Size needed for unsigned encoding */
+size_t
+nettle_mpz_sizeinbase_256_u(const mpz_t x);
+
+/* Writes an integer as length octets, using big endian byte order,
+ * and two's complement for negative numbers. */
+void
+nettle_mpz_get_str_256(size_t length, uint8_t *s, const mpz_t x);
+
+/* Reads a big endian, two's complement, integer. */
+void
+nettle_mpz_set_str_256_s(mpz_t x,
+			 size_t length, const uint8_t *s);
+
+void
+nettle_mpz_init_set_str_256_s(mpz_t x,
+			      size_t length, const uint8_t *s);
+
+/* Similar, but for unsigned format. These function don't interpret
+ * the most significant bit as the sign. */
+void
+nettle_mpz_set_str_256_u(mpz_t x,
+			 size_t length, const uint8_t *s);
+
+void
+nettle_mpz_init_set_str_256_u(mpz_t x,
+			      size_t length, const uint8_t *s);
+
+/* Returns a uniformly distributed random number 0 <= x < 2^n */
+void
+nettle_mpz_random_size(mpz_t x,
+		       void *ctx, nettle_random_func *random,
+		       unsigned bits);
+
+/* Returns a number x, almost uniformly random in the range
+ * 0 <= x < n. */
+void
+nettle_mpz_random(mpz_t x, 
+		  void *ctx, nettle_random_func *random,
+		  const mpz_t n);
+
+void
+nettle_random_prime(mpz_t p, unsigned bits, int top_bits_set,
+		    void *ctx, nettle_random_func *random,
+		    void *progress_ctx, nettle_progress_func *progress);
+
+void
+_nettle_generate_pocklington_prime (mpz_t p, mpz_t r,
+				    unsigned bits, int top_bits_set, 
+				    void *ctx, nettle_random_func *random, 
+				    const mpz_t p0,
+				    const mpz_t q,
+				    const mpz_t p0q);
+  
+/* sexp parsing */
+struct sexp_iterator;
+
+/* If LIMIT is non-zero, the number must be at most LIMIT bits.
+ * Implies sexp_iterator_next. */
+int
+nettle_mpz_set_sexp(mpz_t x, unsigned limit, struct sexp_iterator *i);
+
+
+/* der parsing */
+struct asn1_der_iterator;
+
+int
+nettle_asn1_der_get_bignum(struct asn1_der_iterator *iterator,
+			   mpz_t x, unsigned max_bits);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* NETTLE_BIGNUM_H_INCLUDED */