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1/* crypto/rsa/rsa.h */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
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.
8 *
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).
15 *
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.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
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)"
40 *
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
51 * SUCH DAMAGE.
52 *
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.]
57 */
58
59#ifndef HEADER_RSA_H
60#define HEADER_RSA_H
61
62#ifdef __cplusplus
63extern "C" {
64#endif
65
66#include <openssl/bn.h>
67#include <openssl/crypto.h>
68
69#ifdef NO_RSA
70#error RSA is disabled.
71#endif
72
73typedef struct rsa_st RSA;
74
75typedef struct rsa_meth_st
76 {
77 const char *name;
78 int (*rsa_pub_enc)(int flen,unsigned char *from,unsigned char *to,
79 RSA *rsa,int padding);
80 int (*rsa_pub_dec)(int flen,unsigned char *from,unsigned char *to,
81 RSA *rsa,int padding);
82 int (*rsa_priv_enc)(int flen,unsigned char *from,unsigned char *to,
83 RSA *rsa,int padding);
84 int (*rsa_priv_dec)(int flen,unsigned char *from,unsigned char *to,
85 RSA *rsa,int padding);
86 int (*rsa_mod_exp)(BIGNUM *r0,BIGNUM *I,RSA *rsa); /* Can be null */
87 int (*bn_mod_exp)(BIGNUM *r, BIGNUM *a, const BIGNUM *p,
88 const BIGNUM *m, BN_CTX *ctx,
89 BN_MONT_CTX *m_ctx); /* Can be null */
90 int (*init)(RSA *rsa); /* called at new */
91 int (*finish)(RSA *rsa); /* called at free */
92 int flags; /* RSA_METHOD_FLAG_* things */
93 char *app_data; /* may be needed! */
94 } RSA_METHOD;
95
96struct rsa_st
97 {
98 /* The first parameter is used to pickup errors where
99 * this is passed instead of aEVP_PKEY, it is set to 0 */
100 int pad;
101 int version;
102 RSA_METHOD *meth;
103 BIGNUM *n;
104 BIGNUM *e;
105 BIGNUM *d;
106 BIGNUM *p;
107 BIGNUM *q;
108 BIGNUM *dmp1;
109 BIGNUM *dmq1;
110 BIGNUM *iqmp;
111 /* be careful using this if the RSA structure is shared */
112 CRYPTO_EX_DATA ex_data;
113 int references;
114 int flags;
115
116 /* Used to cache montgomery values */
117 BN_MONT_CTX *_method_mod_n;
118 BN_MONT_CTX *_method_mod_p;
119 BN_MONT_CTX *_method_mod_q;
120
121 /* all BIGNUM values are actually in the following data, if it is not
122 * NULL */
123 char *bignum_data;
124 BN_BLINDING *blinding;
125 };
126
127#define RSA_3 0x3L
128#define RSA_F4 0x10001L
129
130#define RSA_METHOD_FLAG_NO_CHECK 0x01 /* don't check pub/private match */
131
132#define RSA_FLAG_CACHE_PUBLIC 0x02
133#define RSA_FLAG_CACHE_PRIVATE 0x04
134#define RSA_FLAG_BLINDING 0x08
135#define RSA_FLAG_THREAD_SAFE 0x10
136/* This flag means the private key operations will be handled by rsa_mod_exp
137 * and that they do not depend on the private key components being present:
138 * for example a key stored in external hardware. Without this flag bn_mod_exp
139 * gets called when private key components are absent.
140 */
141#define RSA_FLAG_EXT_PKEY 0x20
142
143#define RSA_PKCS1_PADDING 1
144#define RSA_SSLV23_PADDING 2
145#define RSA_NO_PADDING 3
146#define RSA_PKCS1_OAEP_PADDING 4
147
148#define RSA_set_app_data(s,arg) RSA_set_ex_data(s,0,(char *)arg)
149#define RSA_get_app_data(s) RSA_get_ex_data(s,0)
150
151RSA * RSA_new(void);
152RSA * RSA_new_method(RSA_METHOD *method);
153int RSA_size(RSA *);
154RSA * RSA_generate_key(int bits, unsigned long e,void
155 (*callback)(int,int,void *),void *cb_arg);
156int RSA_check_key(RSA *);
157 /* next 4 return -1 on error */
158int RSA_public_encrypt(int flen, unsigned char *from,
159 unsigned char *to, RSA *rsa,int padding);
160int RSA_private_encrypt(int flen, unsigned char *from,
161 unsigned char *to, RSA *rsa,int padding);
162int RSA_public_decrypt(int flen, unsigned char *from,
163 unsigned char *to, RSA *rsa,int padding);
164int RSA_private_decrypt(int flen, unsigned char *from,
165 unsigned char *to, RSA *rsa,int padding);
166void RSA_free (RSA *r);
167
168int RSA_flags(RSA *r);
169
170void RSA_set_default_method(RSA_METHOD *meth);
171RSA_METHOD *RSA_get_default_method(void);
172RSA_METHOD *RSA_get_method(RSA *rsa);
173RSA_METHOD *RSA_set_method(RSA *rsa, RSA_METHOD *meth);
174
175/* This function needs the memory locking malloc callbacks to be installed */
176int RSA_memory_lock(RSA *r);
177
178/* If you have RSAref compiled in. */
179RSA_METHOD *RSA_PKCS1_RSAref(void);
180
181/* these are the actual SSLeay RSA functions */
182RSA_METHOD *RSA_PKCS1_SSLeay(void);
183
184void ERR_load_RSA_strings(void );
185
186RSA * d2i_RSAPublicKey(RSA **a, unsigned char **pp, long length);
187int i2d_RSAPublicKey(RSA *a, unsigned char **pp);
188RSA * d2i_RSAPrivateKey(RSA **a, unsigned char **pp, long length);
189int i2d_RSAPrivateKey(RSA *a, unsigned char **pp);
190#ifndef NO_FP_API
191int RSA_print_fp(FILE *fp, RSA *r,int offset);
192#endif
193
194#ifdef HEADER_BIO_H
195int RSA_print(BIO *bp, RSA *r,int offset);
196#endif
197
198int i2d_Netscape_RSA(RSA *a, unsigned char **pp, int (*cb)());
199RSA *d2i_Netscape_RSA(RSA **a, unsigned char **pp, long length, int (*cb)());
200/* Naughty internal function required elsewhere, to handle a MS structure
201 * that is the same as the netscape one :-) */
202RSA *d2i_Netscape_RSA_2(RSA **a, unsigned char **pp, long length, int (*cb)());
203
204/* The following 2 functions sign and verify a X509_SIG ASN1 object
205 * inside PKCS#1 padded RSA encryption */
206int RSA_sign(int type, unsigned char *m, unsigned int m_len,
207 unsigned char *sigret, unsigned int *siglen, RSA *rsa);
208int RSA_verify(int type, unsigned char *m, unsigned int m_len,
209 unsigned char *sigbuf, unsigned int siglen, RSA *rsa);
210
211/* The following 2 function sign and verify a ASN1_OCTET_STRING
212 * object inside PKCS#1 padded RSA encryption */
213int RSA_sign_ASN1_OCTET_STRING(int type, unsigned char *m, unsigned int m_len,
214 unsigned char *sigret, unsigned int *siglen, RSA *rsa);
215int RSA_verify_ASN1_OCTET_STRING(int type, unsigned char *m, unsigned int m_len,
216 unsigned char *sigbuf, unsigned int siglen, RSA *rsa);
217
218int RSA_blinding_on(RSA *rsa, BN_CTX *ctx);
219void RSA_blinding_off(RSA *rsa);
220
221int RSA_padding_add_PKCS1_type_1(unsigned char *to,int tlen,
222 unsigned char *f,int fl);
223int RSA_padding_check_PKCS1_type_1(unsigned char *to,int tlen,
224 unsigned char *f,int fl,int rsa_len);
225int RSA_padding_add_PKCS1_type_2(unsigned char *to,int tlen,
226 unsigned char *f,int fl);
227int RSA_padding_check_PKCS1_type_2(unsigned char *to,int tlen,
228 unsigned char *f,int fl,int rsa_len);
229int RSA_padding_add_PKCS1_OAEP(unsigned char *to,int tlen,
230 unsigned char *f,int fl,unsigned char *p,
231 int pl);
232int RSA_padding_check_PKCS1_OAEP(unsigned char *to,int tlen,
233 unsigned char *f,int fl,int rsa_len,
234 unsigned char *p,int pl);
235int RSA_padding_add_SSLv23(unsigned char *to,int tlen,
236 unsigned char *f,int fl);
237int RSA_padding_check_SSLv23(unsigned char *to,int tlen,
238 unsigned char *f,int fl,int rsa_len);
239int RSA_padding_add_none(unsigned char *to,int tlen,
240 unsigned char *f,int fl);
241int RSA_padding_check_none(unsigned char *to,int tlen,
242 unsigned char *f,int fl,int rsa_len);
243
244int RSA_get_ex_new_index(long argl, char *argp, int (*new_func)(),
245 int (*dup_func)(), void (*free_func)());
246int RSA_set_ex_data(RSA *r,int idx,char *arg);
247char *RSA_get_ex_data(RSA *r, int idx);
248
249/* BEGIN ERROR CODES */
250/* The following lines are auto generated by the script mkerr.pl. Any changes
251 * made after this point may be overwritten when the script is next run.
252 */
253
254/* Error codes for the RSA functions. */
255
256/* Function codes. */
257#define RSA_F_MEMORY_LOCK 100
258#define RSA_F_RSA_CHECK_KEY 123
259#define RSA_F_RSA_EAY_PRIVATE_DECRYPT 101
260#define RSA_F_RSA_EAY_PRIVATE_ENCRYPT 102
261#define RSA_F_RSA_EAY_PUBLIC_DECRYPT 103
262#define RSA_F_RSA_EAY_PUBLIC_ENCRYPT 104
263#define RSA_F_RSA_GENERATE_KEY 105
264#define RSA_F_RSA_NEW_METHOD 106
265#define RSA_F_RSA_PADDING_ADD_NONE 107
266#define RSA_F_RSA_PADDING_ADD_PKCS1_OAEP 121
267#define RSA_F_RSA_PADDING_ADD_PKCS1_TYPE_1 108
268#define RSA_F_RSA_PADDING_ADD_PKCS1_TYPE_2 109
269#define RSA_F_RSA_PADDING_ADD_SSLV23 110
270#define RSA_F_RSA_PADDING_CHECK_NONE 111
271#define RSA_F_RSA_PADDING_CHECK_PKCS1_OAEP 122
272#define RSA_F_RSA_PADDING_CHECK_PKCS1_TYPE_1 112
273#define RSA_F_RSA_PADDING_CHECK_PKCS1_TYPE_2 113
274#define RSA_F_RSA_PADDING_CHECK_SSLV23 114
275#define RSA_F_RSA_PRINT 115
276#define RSA_F_RSA_PRINT_FP 116
277#define RSA_F_RSA_SIGN 117
278#define RSA_F_RSA_SIGN_ASN1_OCTET_STRING 118
279#define RSA_F_RSA_VERIFY 119
280#define RSA_F_RSA_VERIFY_ASN1_OCTET_STRING 120
281
282/* Reason codes. */
283#define RSA_R_ALGORITHM_MISMATCH 100
284#define RSA_R_BAD_E_VALUE 101
285#define RSA_R_BAD_FIXED_HEADER_DECRYPT 102
286#define RSA_R_BAD_PAD_BYTE_COUNT 103
287#define RSA_R_BAD_SIGNATURE 104
288#define RSA_R_BLOCK_TYPE_IS_NOT_01 106
289#define RSA_R_BLOCK_TYPE_IS_NOT_02 107
290#define RSA_R_DATA_GREATER_THAN_MOD_LEN 108
291#define RSA_R_DATA_TOO_LARGE 109
292#define RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE 110
293#define RSA_R_DATA_TOO_SMALL 111
294#define RSA_R_DATA_TOO_SMALL_FOR_KEY_SIZE 122
295#define RSA_R_D_E_NOT_CONGRUENT_TO_1 123
296#define RSA_R_DIGEST_TOO_BIG_FOR_RSA_KEY 112
297#define RSA_R_DMP1_NOT_CONGRUENT_TO_D 124
298#define RSA_R_DMQ1_NOT_CONGRUENT_TO_D 125
299#define RSA_R_IQMP_NOT_INVERSE_OF_Q 126
300#define RSA_R_KEY_SIZE_TOO_SMALL 120
301#define RSA_R_NULL_BEFORE_BLOCK_MISSING 113
302#define RSA_R_N_DOES_NOT_EQUAL_P_Q 127
303#define RSA_R_OAEP_DECODING_ERROR 121
304#define RSA_R_PADDING_CHECK_FAILED 114
305#define RSA_R_P_NOT_PRIME 128
306#define RSA_R_Q_NOT_PRIME 129
307#define RSA_R_SSLV3_ROLLBACK_ATTACK 115
308#define RSA_R_THE_ASN1_OBJECT_IDENTIFIER_IS_NOT_KNOWN_FOR_THIS_MD 116
309#define RSA_R_UNKNOWN_ALGORITHM_TYPE 117
310#define RSA_R_UNKNOWN_PADDING_TYPE 118
311#define RSA_R_WRONG_SIGNATURE_LENGTH 119
312
313#ifdef __cplusplus
314}
315#endif
316#endif
317
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