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, BN_MONT_CTX *m_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(void)
135 return(&rsa_pkcs1_ref_meth);
138 static int RSA_ref_mod_exp(BIGNUM *r0, BIGNUM *I, RSA *rsa)
140 RSAREFerr(RSAREF_F_RSA_REF_MOD_EXP,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
144 static int BN_ref_mod_exp(BIGNUM *r, BIGNUM *a, BIGNUM *p, BIGNUM *m,
145 BN_CTX *ctx, BN_MONT_CTX *m_ctx)
147 RSAREFerr(RSAREF_F_BN_REF_MOD_EXP,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
151 /* unsigned char *to: [max] */
152 static int RSAref_bn2bin(BIGNUM *from, unsigned char *to, int max)
156 i=BN_num_bytes(from);
159 RSAREFerr(RSAREF_F_RSAREF_BN2BIN,RSAREF_R_LEN);
163 memset(to,0,(unsigned int)max);
164 if (!BN_bn2bin(from,&(to[max-i])))
170 /* unsigned char *from: [max] */
171 static BIGNUM *RSAref_bin2bn(unsigned char *from, BIGNUM *to, int max)
176 for (i=0; i<max; i++)
179 ret=BN_bin2bn(&(from[i]),max-i,to);
183 static int RSAref_Public_ref2eay(RSArefPublicKey *from, RSA *to)
185 to->n=RSAref_bin2bn(from->m,NULL,RSAref_MAX_LEN);
186 to->e=RSAref_bin2bn(from->e,NULL,RSAref_MAX_LEN);
187 if ((to->n == NULL) || (to->e == NULL)) return(0);
192 static int RSAref_Public_eay2ref(RSA *from, RSArefPublicKey *to)
194 to->bits=BN_num_bits(from->n);
195 if (!RSAref_bn2bin(from->n,to->m,RSAref_MAX_LEN)) return(0);
196 if (!RSAref_bn2bin(from->e,to->e,RSAref_MAX_LEN)) return(0);
201 static int RSAref_Private_ref2eay(RSArefPrivateKey *from, RSA *to)
203 if ((to->n=RSAref_bin2bn(from->m,NULL,RSAref_MAX_LEN)) == NULL)
205 if ((to->e=RSAref_bin2bn(from->e,NULL,RSAref_MAX_LEN)) == NULL)
207 if ((to->d=RSAref_bin2bn(from->d,NULL,RSAref_MAX_LEN)) == NULL)
209 if ((to->p=RSAref_bin2bn(from->prime[0],NULL,RSAref_MAX_PLEN)) == NULL)
211 if ((to->q=RSAref_bin2bn(from->prime[1],NULL,RSAref_MAX_PLEN)) == NULL)
213 if ((to->dmp1=RSAref_bin2bn(from->pexp[0],NULL,RSAref_MAX_PLEN))
216 if ((to->dmq1=RSAref_bin2bn(from->pexp[1],NULL,RSAref_MAX_PLEN))
219 if ((to->iqmp=RSAref_bin2bn(from->coef,NULL,RSAref_MAX_PLEN)) == NULL)
225 static int RSAref_Private_eay2ref(RSA *from, RSArefPrivateKey *to)
227 to->bits=BN_num_bits(from->n);
228 if (!RSAref_bn2bin(from->n,to->m,RSAref_MAX_LEN)) return(0);
229 if (!RSAref_bn2bin(from->e,to->e,RSAref_MAX_LEN)) return(0);
230 if (!RSAref_bn2bin(from->d,to->d,RSAref_MAX_LEN)) return(0);
231 if (!RSAref_bn2bin(from->p,to->prime[0],RSAref_MAX_PLEN)) return(0);
232 if (!RSAref_bn2bin(from->q,to->prime[1],RSAref_MAX_PLEN)) return(0);
233 if (!RSAref_bn2bin(from->dmp1,to->pexp[0],RSAref_MAX_PLEN)) return(0);
234 if (!RSAref_bn2bin(from->dmq1,to->pexp[1],RSAref_MAX_PLEN)) return(0);
235 if (!RSAref_bn2bin(from->iqmp,to->coef,RSAref_MAX_PLEN)) return(0);
239 int RSA_ref_private_decrypt(int len, unsigned char *from, unsigned char *to,
240 RSA *rsa, int padding)
243 RSArefPrivateKey RSAkey;
245 if (!RSAref_Private_eay2ref(rsa,&RSAkey))
247 if ((i=RSAPrivateDecrypt(to,&outlen,from,len,&RSAkey)) != 0)
249 RSAREFerr(RSAREF_F_RSA_REF_PRIVATE_DECRYPT,i);
253 memset(&RSAkey,0,sizeof(RSAkey));
257 int RSA_ref_private_encrypt(int len, unsigned char *from, unsigned char *to,
258 RSA *rsa, int padding)
261 RSArefPrivateKey RSAkey;
263 if (padding != RSA_PKCS1_PADDING)
265 RSAREFerr(RSAREF_F_RSA_REF_PRIVATE_ENCRYPT, RSA_R_UNKNOWN_PADDING_TYPE);
268 if (!RSAref_Private_eay2ref(rsa,&RSAkey))
270 if ((i=RSAPrivateEncrypt(to,&outlen,from,len,&RSAkey)) != 0)
272 RSAREFerr(RSAREF_F_RSA_REF_PRIVATE_ENCRYPT,i);
276 memset(&RSAkey,0,sizeof(RSAkey));
280 int RSA_ref_public_decrypt(int len, unsigned char *from, unsigned char *to,
281 RSA *rsa, int padding)
284 RSArefPublicKey RSAkey;
286 if (!RSAref_Public_eay2ref(rsa,&RSAkey))
288 if ((i=RSAPublicDecrypt(to,&outlen,from,len,&RSAkey)) != 0)
290 RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_DECRYPT,i);
294 memset(&RSAkey,0,sizeof(RSAkey));
298 int RSA_ref_public_encrypt(int len, unsigned char *from, unsigned char *to,
299 RSA *rsa, int padding)
303 RSArefPublicKey RSAkey;
305 unsigned char buf[16];
307 if (padding != RSA_PKCS1_PADDING && padding != RSA_SSLV23_PADDING)
309 RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT, RSA_R_UNKNOWN_PADDING_TYPE);
314 R_GetRandomBytesNeeded((unsigned int *)&i,&rnd);
318 R_RandomUpdate(&rnd,buf,(unsigned int)((i>16)?16:i));
322 if (!RSAref_Public_eay2ref(rsa,&RSAkey))
324 if ((i=RSAPublicEncrypt(to,&outlen,from,len,&RSAkey,&rnd)) != 0)
326 RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,i);
331 memset(&RSAkey,0,sizeof(RSAkey));
333 memset(&rnd,0,sizeof(rnd));