2 * Copyright (c) 1997-1999 The Stanford SRP Authentication Project
5 * Permission is hereby granted, free of charge, to any person obtaining
6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
13 * The above copyright notice and this permission notice shall be
14 * included in all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
17 * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
18 * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
20 * IN NO EVENT SHALL STANFORD BE LIABLE FOR ANY SPECIAL, INCIDENTAL,
21 * INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES WHATSOEVER
22 * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER OR NOT ADVISED OF
23 * THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF LIABILITY, ARISING OUT
24 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
26 * In addition, the following conditions apply:
28 * 1. Any software that incorporates the SRP authentication technology
29 * must display the following acknowlegment:
30 * "This product uses the 'Secure Remote Password' cryptographic
31 * authentication system developed by Tom Wu (tjw@CS.Stanford.EDU)."
33 * 2. Any software that incorporates all or part of the SRP distribution
34 * itself must also display the following acknowledgment:
35 * "This product includes software developed by Tom Wu and Eugene
36 * Jhong for the SRP Distribution (http://srp.stanford.edu/srp/)."
38 * 3. Redistributions in source or binary form must retain an intact copy
39 * of this copyright notice and list of conditions.
43 #include <sys/types.h>
48 typedef BIGNUM * BigInteger;
51 #include "t_defines.h"
54 /* Math library interface stubs */
60 BIGNUM * a = BN_new();
66 BigIntegerFromBytes(bytes, length)
67 unsigned char * bytes;
70 BIGNUM * a = BN_new();
71 BN_bin2bn(bytes, length, a);
76 BigIntegerToBytes(src, dest)
80 return BN_bn2bin(src, dest);
87 return BN_cmp(c1, c2);
91 BigIntegerCmpInt(c1, c2)
95 BIGNUM * a = BN_new();
104 BigIntegerAdd(result, a1, a2)
105 BigInteger result, a1, a2;
107 BN_add(result, a1, a2);
111 BigIntegerAddInt(result, a1, a2)
112 BigInteger result, a1;
115 BIGNUM * a = BN_new();
117 BN_add(result, a1, a);
122 BigIntegerSub(result, s1, s2)
123 BigInteger result, s1, s2;
125 BN_sub(result, s1, s2);
129 BigIntegerMulInt(result, m1, m2)
130 BigInteger result, m1;
133 BN_CTX * ctx = BN_CTX_new();
134 BIGNUM * m = BN_new();
136 BN_mul(result, m1, m, ctx);
141 BigIntegerModMul(r, m1, m2, modulus)
142 BigInteger r, m1, m2, modulus;
144 BN_CTX * ctx = BN_CTX_new();
145 BN_mod_mul(r, m1, m2, modulus, ctx);
150 BigIntegerModExp(r, b, e, m)
151 BigInteger r, b, e, m;
153 BN_CTX * ctx = BN_CTX_new();
154 BN_mod_exp(r, b, e, m, ctx);
159 BigIntegerModExpInt(r, b, e, m)
164 BN_CTX * ctx = BN_CTX_new();
165 BIGNUM * p = BN_new();
167 BN_mod_exp(r, b, p, m, ctx);