prune off stuff we dont use
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@19741 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Love Hörnquist Åstrand
File diff suppressed because it is too large
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@@ -1,123 +0,0 @@
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/*
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Name: imrat.h
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Purpose: Arbitrary precision rational arithmetic routines.
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Author: M. J. Fromberger <http://www.dartmouth.edu/~sting/>
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Info: $Id$
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Copyright (C) 2002 Michael J. Fromberger, All Rights Reserved.
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Permission is hereby granted, free of charge, to any person
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obtaining a copy of this software and associated documentation files
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(the "Software"), to deal in the Software without restriction,
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including without limitation the rights to use, copy, modify, merge,
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publish, distribute, sublicense, and/or sell copies of the Software,
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and to permit persons to whom the Software is furnished to do so,
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subject to the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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#ifndef IMRAT_H_
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#define IMRAT_H_
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#include "imath.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct mpq {
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mpz_t num; /* Numerator */
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mpz_t den; /* Denominator, <> 0 */
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} mpq_t, *mp_rat;
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#define MP_NUMER_P(Q) (&((Q)->num)) /* Pointer to numerator */
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#define MP_DENOM_P(Q) (&((Q)->den)) /* Pointer to denominator */
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/* Rounding constants */
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typedef enum {
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MP_ROUND_DOWN,
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MP_ROUND_HALF_UP,
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MP_ROUND_UP,
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MP_ROUND_HALF_DOWN
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} mp_round_mode;
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mp_result mp_rat_init(mp_rat r);
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mp_rat mp_rat_alloc(void);
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mp_result mp_rat_init_size(mp_rat r, mp_size n_prec, mp_size d_prec);
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mp_result mp_rat_init_copy(mp_rat r, mp_rat old);
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mp_result mp_rat_set_value(mp_rat r, int numer, int denom);
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void mp_rat_clear(mp_rat r);
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void mp_rat_free(mp_rat r);
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mp_result mp_rat_numer(mp_rat r, mp_int z); /* z = num(r) */
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mp_result mp_rat_denom(mp_rat r, mp_int z); /* z = den(r) */
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mp_sign mp_rat_sign(mp_rat r);
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mp_result mp_rat_copy(mp_rat a, mp_rat c); /* c = a */
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void mp_rat_zero(mp_rat r); /* r = 0 */
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mp_result mp_rat_abs(mp_rat a, mp_rat c); /* c = |a| */
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mp_result mp_rat_neg(mp_rat a, mp_rat c); /* c = -a */
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mp_result mp_rat_recip(mp_rat a, mp_rat c); /* c = 1 / a */
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mp_result mp_rat_add(mp_rat a, mp_rat b, mp_rat c); /* c = a + b */
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mp_result mp_rat_sub(mp_rat a, mp_rat b, mp_rat c); /* c = a - b */
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mp_result mp_rat_mul(mp_rat a, mp_rat b, mp_rat c); /* c = a * b */
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mp_result mp_rat_div(mp_rat a, mp_rat b, mp_rat c); /* c = a / b */
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mp_result mp_rat_add_int(mp_rat a, mp_int b, mp_rat c); /* c = a + b */
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mp_result mp_rat_sub_int(mp_rat a, mp_int b, mp_rat c); /* c = a - b */
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mp_result mp_rat_mul_int(mp_rat a, mp_int b, mp_rat c); /* c = a * b */
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mp_result mp_rat_div_int(mp_rat a, mp_int b, mp_rat c); /* c = a / b */
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mp_result mp_rat_expt(mp_rat a, int b, mp_rat c); /* c = a ^ b */
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int mp_rat_compare(mp_rat a, mp_rat b); /* a <=> b */
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int mp_rat_compare_unsigned(mp_rat a, mp_rat b); /* |a| <=> |b| */
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int mp_rat_compare_zero(mp_rat r); /* r <=> 0 */
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int mp_rat_compare_value(mp_rat r, int n, int d); /* r <=> n/d */
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int mp_rat_is_integer(mp_rat r);
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/* Convert to integers, if representable (returns MP_RANGE if not). */
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mp_result mp_rat_to_ints(mp_rat r, int *num, int *den);
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/* Convert to nul-terminated string with the specified radix, writing
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at most limit characters including the nul terminator. */
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mp_result mp_rat_to_string(mp_rat r, mp_size radix, char *str, int limit);
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/* Convert to decimal format in the specified radix and precision,
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writing at most limit characters including a nul terminator. */
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mp_result mp_rat_to_decimal(mp_rat r, mp_size radix, mp_size prec,
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mp_round_mode round, char *str, int limit);
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/* Return the number of characters required to represent r in the given
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radix. May over-estimate. */
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mp_result mp_rat_string_len(mp_rat r, mp_size radix);
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/* Return the number of characters required to represent r in decimal
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format with the given radix and precision. May over-estimate. */
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mp_result mp_rat_decimal_len(mp_rat r, mp_size radix, mp_size prec);
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/* Read zero-terminated string into r */
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mp_result mp_rat_read_string(mp_rat r, mp_size radix, const char *str);
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mp_result mp_rat_read_cstring(mp_rat r, mp_size radix, const char *str,
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char **end);
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mp_result mp_rat_read_ustring(mp_rat r, mp_size radix, const char *str,
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char **end);
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/* Read zero-terminated string in decimal format into r */
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mp_result mp_rat_read_decimal(mp_rat r, mp_size radix, const char *str);
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mp_result mp_rat_read_cdecimal(mp_rat r, mp_size radix, const char *str,
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char **end);
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#ifdef __cplusplus
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}
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#endif
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#endif /* IMRAT_H_ */
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@@ -1,205 +0,0 @@
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/*
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Name: rsamath.c
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Purpose: Implements part of PKCS#1, v. 2.1, June 14, 2002 (RSA Labs)
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Author: M. J. Fromberger <http://www.dartmouth.edu/~sting/>
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Copyright (C) 2002 Michael J. Fromberger, All Rights Reserved.
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Info: $Id$
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Permission is hereby granted, free of charge, to any person
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obtaining a copy of this software and associated documentation files
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(the "Software"), to deal in the Software without restriction,
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including without limitation the rights to use, copy, modify, merge,
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publish, distribute, sublicense, and/or sell copies of the Software,
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and to permit persons to whom the Software is furnished to do so,
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subject to the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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#include "rsamath.h"
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#include <string.h>
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#include <limits.h>
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static mp_result s_rsa_transform(mp_int msg, mp_int exp,
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mp_int mod, mp_int out);
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/* {{{ rsa_i2osp(z, out, len) */
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/* Convert integer to octet string, per PKCS#1 v.2.1 */
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mp_result rsa_i2osp(mp_int z, unsigned char *out, int len)
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{
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int excess_len = mp_int_binary_len(z);
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if(excess_len < len)
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return MP_RANGE;
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memset(out, 0, len);
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excess_len -= len;
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mp_int_to_binary(z, out + excess_len, len);
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return MP_OK;
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}
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/* }}} */
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/* {{{ rsa_os2ip(z, in, len) */
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/* Convert octet string to integer, per PKCS#1 v.2.1 */
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mp_result rsa_os2ip(mp_int z, unsigned char *in, int len)
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{
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return mp_int_read_binary(z, in, len);
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}
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/* }}} */
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/* {{{ rsa_rsaep(msg, exp, mod, cipher) */
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/* Primitive RSA encryption operation */
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mp_result rsa_rsaep(mp_int msg, mp_int exp, mp_int mod, mp_int cipher)
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{
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return s_rsa_transform(msg, exp, mod, cipher);
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}
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/* }}} */
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/* {{{ rsa_rsadp(cipher, exp, mod, msg) */
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/* Primitive RSA decryption operation */
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mp_result rsa_rsadp(mp_int cipher, mp_int exp, mp_int mod, mp_int msg)
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{
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return s_rsa_transform(cipher, exp, mod, msg);
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}
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/* }}} */
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/* {{{ rsa_rsasp(msg, exp, mod, signature) */
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/* Primitive RSA signing operation */
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mp_result rsa_rsasp(mp_int msg, mp_int exp, mp_int mod, mp_int signature)
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{
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return s_rsa_transform(msg, exp, mod, signature);
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}
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/* }}} */
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/* {{{ rsa_rsavp(signature, exp, mod, msg) */
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/* Primitive RSA verification operation */
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mp_result rsa_rsavp(mp_int signature, mp_int exp, mp_int mod, mp_int msg)
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{
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return s_rsa_transform(signature, exp, mod, msg);
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}
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/* }}} */
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/* {{{ rsa_max_message_len(mod) */
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/* Compute the maximum length in bytes a message can have using PKCS#1
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v.1.5 encoding with the given modulus */
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int rsa_max_message_len(mp_int mod)
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{
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int num_bits = mp_int_count_bits(mod);
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int num_bytes = num_bits / CHAR_BIT;
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if(num_bytes < 11)
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return 0; /* at least eleven bytes are required for padding */
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else
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return num_bytes - 11;
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}
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/* }}} */
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/* {{{ rsa_pkcs1v15_encode(buf, msg_len, buf_len, tag, filler) */
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mp_result rsa_pkcs1v15_encode(unsigned char *buf, int msg_len,
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int buf_len, int tag, random_f filler)
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{
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int pad_len, msg_start;
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/* Make sure there is enough space for the encoded output */
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if(msg_len > (buf_len - 11))
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return MP_RANGE;
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msg_start = buf_len - msg_len;
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pad_len = msg_start - 3;
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/* Move message to top of buffer -- these might overlap, so we rely
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on the semantics of memmove() here */
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memmove(buf + msg_start, buf, msg_len);
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/* Set initial bytes as required by the specification */
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buf[0] = 0x00;
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buf[1] = (unsigned char)tag;
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/* Fill with random padding. We'll just assume the filler function
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does the right thing and only writes the requested number of
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nonzero bytes */
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(filler)(buf + 2, pad_len);
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/* Write separator between pad and message body */
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buf[msg_start - 1] = 0x00;
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return MP_OK;
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}
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/* }}} */
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/* {{{ rsa_pkcs1v15_decode(buf, buf_len, *msg_len) */
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mp_result rsa_pkcs1v15_decode(unsigned char *buf, int buf_len,
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int tag, int *msg_len)
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{
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int pad_len = 0, data_len, data_start, i;
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/* Make sure the buffer is syntactically valid */
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if(buf_len < 11 || buf[0] != 0x00 || buf[1] != (unsigned char)tag)
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return MP_UNDEF;
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/* Figure out how many bytes of random padding there are */
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i = 2;
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while(buf[i++] != '\0')
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++pad_len;
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data_start = i;
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data_len = buf_len - data_start;
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/* Shift the message to the front of the buffer */
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memmove(buf, buf + data_start, data_len);
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/* Zero out the rest of the buffer */
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memset(buf + data_len, 0, pad_len + 3);
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*msg_len = data_len;
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return MP_OK;
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}
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/* }}} */
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/* {{{ s_rsa_transform(msg, exp, mod, out) */
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static mp_result s_rsa_transform(mp_int msg, mp_int exp,
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mp_int mod, mp_int out)
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{
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if(mp_int_compare_zero(msg) < 0 ||
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mp_int_compare(msg, mod) >= 0)
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return MP_RANGE;
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return mp_int_exptmod(msg, exp, mod, out);
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}
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/* }}} */
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/* Here there be dragons */
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@@ -1,97 +0,0 @@
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/*
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Name: rsamath.h
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Purpose: Implements part of PKCS#1, v. 2.1, June 14, 2002 (RSA Labs)
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Author: M. J. Fromberger <http://www.dartmouth.edu/~sting/>
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Info: $Id$
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||||
|
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Copyright (C) 2002 Michael J. Fromberger, All Rights Reserved.
|
||||
|
||||
Permission is hereby granted, free of charge, to any person
|
||||
obtaining a copy of this software and associated documentation files
|
||||
(the "Software"), to deal in the Software without restriction,
|
||||
including without limitation the rights to use, copy, modify, merge,
|
||||
publish, distribute, sublicense, and/or sell copies of the Software,
|
||||
and to permit persons to whom the Software is furnished to do so,
|
||||
subject to the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be
|
||||
included in all copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
SOFTWARE.
|
||||
*/
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#ifndef RSAMATH_H_
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#define RSAMATH_H_
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#include "imath.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Function to fill a buffer with nonzero random bytes */
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typedef void (*random_f)(unsigned char *, int);
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/* Convert integer to octet string, per PKCS#1 v.2.1 */
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mp_result rsa_i2osp(mp_int z, unsigned char *out, int len);
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/* Convert octet string to integer, per PKCS#1 v.2.1 */
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mp_result rsa_os2ip(mp_int z, unsigned char *in, int len);
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/* The following operations assume that you have converted your keys
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and message data into mp_int values somehow. */
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/* Primitive RSA encryption operation */
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mp_result rsa_rsaep(mp_int msg, mp_int exp, mp_int mod, mp_int cipher);
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/* Primitive RSA decryption operation */
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mp_result rsa_rsadp(mp_int cipher, mp_int exp, mp_int mod, mp_int msg);
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||||
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||||
/* Primitive RSA signing operation */
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mp_result rsa_rsasp(mp_int msg, mp_int exp, mp_int mod, mp_int signature);
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||||
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||||
/* Primitive RSA verification operation */
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mp_result rsa_rsavp(mp_int signature, mp_int exp, mp_int mod, mp_int msg);
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||||
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||||
/* Compute the maximum length in bytes a message can have using PKCS#1
|
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v.1.5 encoding with the given modulus */
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int rsa_max_message_len(mp_int mod);
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||||
/* Encode a raw message per PKCS#1 v.1.5
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buf - the buffer containing the message
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||||
msg_len - the length in bytes of the message
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||||
buf_len - the size in bytes of the buffer
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||||
tag - the message tag (nonzero byte)
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||||
filler - function to generate pseudorandom nonzero padding
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||||
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On input, the message is in the first msg_len bytes of the buffer;
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||||
on output, the contents of the buffer are replaced by the padded
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||||
message. If there is not enough room, MP_RANGE is returned.
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||||
*/
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||||
mp_result rsa_pkcs1v15_encode(unsigned char *buf, int msg_len,
|
||||
int buf_len, int tag, random_f filler);
|
||||
|
||||
/* Decode a PKCS#1 v.1.5 message back to its raw form
|
||||
buf - the buffer containing the encoded message
|
||||
buf_len - the length in bytes of the buffer
|
||||
tag - the expected message tag (nonzero byte)
|
||||
msg_len - on output, receives the length of the message content
|
||||
|
||||
On output, the message is packed into the first msg_len bytes of
|
||||
the buffer, and the rest of the buffer is zeroed. If the buffer is
|
||||
not of the correct form, MP_UNDEF is returned and msg_len is undefined.
|
||||
*/
|
||||
mp_result rsa_pkcs1v15_decode(unsigned char *buf, int buf_len,
|
||||
int tag, int *msg_len);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
#endif /* end RSAMATH_H_ */
|
||||
Reference in New Issue
Block a user