2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
67 * RSAREFerr(RSAREF_F_RSA_REF_BN2BIN,RSAREF_R_CONTENT_ENCODING);
68 * RSAREFerr(RSAREF_F_RSA_REF_PRIVATE_DECRYPT,RSAREF_R_DATA);
69 * RSAREFerr(RSAREF_F_RSA_REF_PRIVATE_ENCRYPT,RSAREF_R_DIGEST_ALGORITHM);
70 * RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_DECRYPT,RSAREF_R_ENCODING);
71 * RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_KEY);
72 * RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_KEY_ENCODING);
73 * RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_LEN);
74 * RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_MODULUS_LEN);
75 * RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_NEED_RANDOM);
76 * RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_PRIVATE_KEY);
77 * RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_PUBLIC_KEY);
78 * RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_SIGNATURE);
79 * RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_SIGNATURE_ENCODING);
80 * RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_ENCRYPTION_ALGORITHM);
81 * RSAREFerr(RSAREF_F_RSAREF_BN2BIN,ERR_R_BN_LIB);
85 static int RSAref_bn2bin(BIGNUM * from, unsigned char* to, int max);
87 static BIGNUM* RSAref_bin2bn(unsigned char* from, BIGNUM * to, int max);
89 static int RSAref_Public_eay2ref(RSA * from, RSArefPublicKey * to);
90 static int RSAref_Private_eay2ref(RSA * from, RSArefPrivateKey * to);
91 int RSA_ref_private_decrypt(int len, unsigned char *from,
92 unsigned char *to, RSA *rsa, int padding);
93 int RSA_ref_private_encrypt(int len, unsigned char *from,
94 unsigned char *to, RSA *rsa, int padding);
95 int RSA_ref_public_encrypt(int len, unsigned char *from,
96 unsigned char *to, RSA *rsa, int padding);
97 int RSA_ref_public_decrypt(int len, unsigned char *from,
98 unsigned char *to, RSA *rsa, int padding);
99 static int BN_ref_mod_exp(BIGNUM *r,BIGNUM *a,BIGNUM *p,BIGNUM *m, BN_CTX *ctx);
100 static int RSA_ref_mod_exp(BIGNUM *r0, BIGNUM *I, RSA *rsa);
103 static int RSAref_bn2bin();
105 static BIGNUM* RSAref_bin2bn();
107 static int RSAref_Public_eay2ref();
108 static int RSAref_Private_eay2ref();
109 static int BN_ref_mod_exp();
110 static int RSA_ref_mod_exp();
111 int RSA_ref_private_decrypt();
112 int RSA_ref_private_encrypt();
113 int RSA_ref_public_encrypt();
114 int RSA_ref_public_decrypt();
115 static int BN_ref_mod_exp();
116 static int RSA_ref_mod_exp();
119 static RSA_METHOD rsa_pkcs1_ref_meth={
121 RSA_ref_public_encrypt,
122 RSA_ref_public_decrypt,
123 RSA_ref_private_encrypt,
124 RSA_ref_private_decrypt,
133 RSA_METHOD *RSA_PKCS1_RSAref()
135 return(&rsa_pkcs1_ref_meth);
138 static int RSA_ref_mod_exp(r0, I, rsa)
143 RSAREFerr(RSAREF_F_RSA_REF_MOD_EXP,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
147 static int BN_ref_mod_exp(r,a,p,m,ctx)
151 RSAREFerr(RSAREF_F_BN_REF_MOD_EXP,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
155 static int RSAref_bn2bin(from,to,max)
157 unsigned char *to; /* [max] */
162 i=BN_num_bytes(from);
165 RSAREFerr(RSAREF_F_RSAREF_BN2BIN,RSAREF_R_LEN);
169 memset(to,0,(unsigned int)max);
170 if (!BN_bn2bin(from,&(to[max-i])))
176 static BIGNUM *RSAref_bin2bn(from,to,max)
177 unsigned char *from; /* [max] */
184 for (i=0; i<max; i++)
187 ret=BN_bin2bn(&(from[i]),max-i,to);
191 static int RSAref_Public_ref2eay(from,to)
192 RSArefPublicKey *from;
195 to->n=RSAref_bin2bn(from->m,NULL,RSAref_MAX_LEN);
196 to->e=RSAref_bin2bn(from->e,NULL,RSAref_MAX_LEN);
197 if ((to->n == NULL) || (to->e == NULL)) return(0);
202 static int RSAref_Public_eay2ref(from,to)
206 to->bits=BN_num_bits(from->n);
207 if (!RSAref_bn2bin(from->n,to->m,RSAref_MAX_LEN)) return(0);
208 if (!RSAref_bn2bin(from->e,to->e,RSAref_MAX_LEN)) return(0);
213 static int RSAref_Private_ref2eay(from,to)
214 RSArefPrivateKey *from;
217 if ((to->n=RSAref_bin2bn(from->m,NULL,RSAref_MAX_LEN)) == NULL)
219 if ((to->e=RSAref_bin2bn(from->e,NULL,RSAref_MAX_LEN)) == NULL)
221 if ((to->d=RSAref_bin2bn(from->d,NULL,RSAref_MAX_LEN)) == NULL)
223 if ((to->p=RSAref_bin2bn(from->prime[0],NULL,RSAref_MAX_PLEN)) == NULL)
225 if ((to->q=RSAref_bin2bn(from->prime[1],NULL,RSAref_MAX_PLEN)) == NULL)
227 if ((to->dmp1=RSAref_bin2bn(from->pexp[0],NULL,RSAref_MAX_PLEN))
230 if ((to->dmq1=RSAref_bin2bn(from->pexp[1],NULL,RSAref_MAX_PLEN))
233 if ((to->iqmp=RSAref_bin2bn(from->coef,NULL,RSAref_MAX_PLEN)) == NULL)
239 static int RSAref_Private_eay2ref(from,to)
241 RSArefPrivateKey *to;
243 to->bits=BN_num_bits(from->n);
244 if (!RSAref_bn2bin(from->n,to->m,RSAref_MAX_LEN)) return(0);
245 if (!RSAref_bn2bin(from->e,to->e,RSAref_MAX_LEN)) return(0);
246 if (!RSAref_bn2bin(from->d,to->d,RSAref_MAX_LEN)) return(0);
247 if (!RSAref_bn2bin(from->p,to->prime[0],RSAref_MAX_PLEN)) return(0);
248 if (!RSAref_bn2bin(from->q,to->prime[1],RSAref_MAX_PLEN)) return(0);
249 if (!RSAref_bn2bin(from->dmp1,to->pexp[0],RSAref_MAX_PLEN)) return(0);
250 if (!RSAref_bn2bin(from->dmq1,to->pexp[1],RSAref_MAX_PLEN)) return(0);
251 if (!RSAref_bn2bin(from->iqmp,to->coef,RSAref_MAX_PLEN)) return(0);
255 int RSA_ref_private_decrypt(len,from,to,rsa,padding)
257 unsigned char *from,*to;
262 RSArefPrivateKey RSAkey;
264 if (!RSAref_Private_eay2ref(rsa,&RSAkey))
266 if ((i=RSAPrivateDecrypt(to,&outlen,from,len,&RSAkey)) != 0)
268 RSAREFerr(RSAREF_F_RSA_REF_PRIVATE_DECRYPT,i);
272 memset(&RSAkey,0,sizeof(RSAkey));
276 int RSA_ref_private_encrypt(len,from,to,rsa,padding)
278 unsigned char *from,*to;
283 RSArefPrivateKey RSAkey;
285 if (!RSAref_Private_eay2ref(rsa,&RSAkey))
287 if ((i=RSAPrivateEncrypt(to,&outlen,from,len,&RSAkey)) != 0)
289 RSAREFerr(RSAREF_F_RSA_REF_PRIVATE_ENCRYPT,i);
293 memset(&RSAkey,0,sizeof(RSAkey));
297 int RSA_ref_public_decrypt(len,from,to,rsa,padding)
299 unsigned char *from,*to;
304 RSArefPublicKey RSAkey;
306 if (!RSAref_Public_eay2ref(rsa,&RSAkey))
308 if ((i=RSAPublicDecrypt(to,&outlen,from,len,&RSAkey)) != 0)
310 RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_DECRYPT,i);
314 memset(&RSAkey,0,sizeof(RSAkey));
318 int RSA_ref_public_encrypt(len,from,to,rsa,padding)
320 unsigned char *from,*to;
326 RSArefPublicKey RSAkey;
328 unsigned char buf[16];
331 R_GetRandomBytesNeeded((unsigned int *)&i,&rnd);
335 R_RandomUpdate(&rnd,buf,(unsigned int)((i>16)?16:i));
339 if (!RSAref_Public_eay2ref(rsa,&RSAkey))
341 if ((i=RSAPublicEncrypt(to,&outlen,from,len,&RSAkey,&rnd)) != 0)
343 RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,i);
348 memset(&RSAkey,0,sizeof(RSAkey));
350 memset(&rnd,0,sizeof(rnd));