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()
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
,m_ctx
)
152 RSAREFerr(RSAREF_F_BN_REF_MOD_EXP
,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
156 static int RSAref_bn2bin(from
,to
,max
)
158 unsigned char *to
; /* [max] */
163 i
=BN_num_bytes(from
);
166 RSAREFerr(RSAREF_F_RSAREF_BN2BIN
,RSAREF_R_LEN
);
170 memset(to
,0,(unsigned int)max
);
171 if (!BN_bn2bin(from
,&(to
[max
-i
])))
177 static BIGNUM
*RSAref_bin2bn(from
,to
,max
)
178 unsigned char *from
; /* [max] */
185 for (i
=0; i
<max
; i
++)
188 ret
=BN_bin2bn(&(from
[i
]),max
-i
,to
);
192 static int RSAref_Public_ref2eay(from
,to
)
193 RSArefPublicKey
*from
;
196 to
->n
=RSAref_bin2bn(from
->m
,NULL
,RSAref_MAX_LEN
);
197 to
->e
=RSAref_bin2bn(from
->e
,NULL
,RSAref_MAX_LEN
);
198 if ((to
->n
== NULL
) || (to
->e
== NULL
)) return(0);
203 static int RSAref_Public_eay2ref(from
,to
)
207 to
->bits
=BN_num_bits(from
->n
);
208 if (!RSAref_bn2bin(from
->n
,to
->m
,RSAref_MAX_LEN
)) return(0);
209 if (!RSAref_bn2bin(from
->e
,to
->e
,RSAref_MAX_LEN
)) return(0);
214 static int RSAref_Private_ref2eay(from
,to
)
215 RSArefPrivateKey
*from
;
218 if ((to
->n
=RSAref_bin2bn(from
->m
,NULL
,RSAref_MAX_LEN
)) == NULL
)
220 if ((to
->e
=RSAref_bin2bn(from
->e
,NULL
,RSAref_MAX_LEN
)) == NULL
)
222 if ((to
->d
=RSAref_bin2bn(from
->d
,NULL
,RSAref_MAX_LEN
)) == NULL
)
224 if ((to
->p
=RSAref_bin2bn(from
->prime
[0],NULL
,RSAref_MAX_PLEN
)) == NULL
)
226 if ((to
->q
=RSAref_bin2bn(from
->prime
[1],NULL
,RSAref_MAX_PLEN
)) == NULL
)
228 if ((to
->dmp1
=RSAref_bin2bn(from
->pexp
[0],NULL
,RSAref_MAX_PLEN
))
231 if ((to
->dmq1
=RSAref_bin2bn(from
->pexp
[1],NULL
,RSAref_MAX_PLEN
))
234 if ((to
->iqmp
=RSAref_bin2bn(from
->coef
,NULL
,RSAref_MAX_PLEN
)) == NULL
)
240 static int RSAref_Private_eay2ref(from
,to
)
242 RSArefPrivateKey
*to
;
244 to
->bits
=BN_num_bits(from
->n
);
245 if (!RSAref_bn2bin(from
->n
,to
->m
,RSAref_MAX_LEN
)) return(0);
246 if (!RSAref_bn2bin(from
->e
,to
->e
,RSAref_MAX_LEN
)) return(0);
247 if (!RSAref_bn2bin(from
->d
,to
->d
,RSAref_MAX_LEN
)) return(0);
248 if (!RSAref_bn2bin(from
->p
,to
->prime
[0],RSAref_MAX_PLEN
)) return(0);
249 if (!RSAref_bn2bin(from
->q
,to
->prime
[1],RSAref_MAX_PLEN
)) return(0);
250 if (!RSAref_bn2bin(from
->dmp1
,to
->pexp
[0],RSAref_MAX_PLEN
)) return(0);
251 if (!RSAref_bn2bin(from
->dmq1
,to
->pexp
[1],RSAref_MAX_PLEN
)) return(0);
252 if (!RSAref_bn2bin(from
->iqmp
,to
->coef
,RSAref_MAX_PLEN
)) return(0);
256 int RSA_ref_private_decrypt(len
,from
,to
,rsa
,padding
)
258 unsigned char *from
,*to
;
263 RSArefPrivateKey RSAkey
;
265 if (!RSAref_Private_eay2ref(rsa
,&RSAkey
))
267 if ((i
=RSAPrivateDecrypt(to
,&outlen
,from
,len
,&RSAkey
)) != 0)
269 RSAREFerr(RSAREF_F_RSA_REF_PRIVATE_DECRYPT
,i
);
273 memset(&RSAkey
,0,sizeof(RSAkey
));
277 int RSA_ref_private_encrypt(len
,from
,to
,rsa
,padding
)
279 unsigned char *from
,*to
;
284 RSArefPrivateKey RSAkey
;
286 if (!RSAref_Private_eay2ref(rsa
,&RSAkey
))
288 if ((i
=RSAPrivateEncrypt(to
,&outlen
,from
,len
,&RSAkey
)) != 0)
290 RSAREFerr(RSAREF_F_RSA_REF_PRIVATE_ENCRYPT
,i
);
294 memset(&RSAkey
,0,sizeof(RSAkey
));
298 int RSA_ref_public_decrypt(len
,from
,to
,rsa
,padding
)
300 unsigned char *from
,*to
;
305 RSArefPublicKey RSAkey
;
307 if (!RSAref_Public_eay2ref(rsa
,&RSAkey
))
309 if ((i
=RSAPublicDecrypt(to
,&outlen
,from
,len
,&RSAkey
)) != 0)
311 RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_DECRYPT
,i
);
315 memset(&RSAkey
,0,sizeof(RSAkey
));
319 int RSA_ref_public_encrypt(len
,from
,to
,rsa
,padding
)
321 unsigned char *from
,*to
;
327 RSArefPublicKey RSAkey
;
329 unsigned char buf
[16];
332 R_GetRandomBytesNeeded((unsigned int *)&i
,&rnd
);
336 R_RandomUpdate(&rnd
,buf
,(unsigned int)((i
>16)?16:i
));
340 if (!RSAref_Public_eay2ref(rsa
,&RSAkey
))
342 if ((i
=RSAPublicEncrypt(to
,&outlen
,from
,len
,&RSAkey
,&rnd
)) != 0)
344 RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT
,i
);
349 memset(&RSAkey
,0,sizeof(RSAkey
));
351 memset(&rnd
,0,sizeof(rnd
));