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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#ifndef NO_BIO
63#include <openssl/bio.h>
64#endif
65#include <openssl/bn.h>
66#include <openssl/crypto.h>
67
68#ifdef NO_RSA
69#error RSA is disabled.
70#endif
71
72#ifdef __cplusplus
73extern "C" {
74#endif
75
76typedef struct rsa_st RSA;
77
78typedef struct rsa_meth_st
79 {
80 const char *name;
81 int (*rsa_pub_enc)(int flen,unsigned char *from,unsigned char *to,
82 RSA *rsa,int padding);
83 int (*rsa_pub_dec)(int flen,unsigned char *from,unsigned char *to,
84 RSA *rsa,int padding);
85 int (*rsa_priv_enc)(int flen,unsigned char *from,unsigned char *to,
86 RSA *rsa,int padding);
87 int (*rsa_priv_dec)(int flen,unsigned char *from,unsigned char *to,
88 RSA *rsa,int padding);
89 int (*rsa_mod_exp)(BIGNUM *r0,BIGNUM *I,RSA *rsa); /* Can be null */
90 int (*bn_mod_exp)(BIGNUM *r, BIGNUM *a, const BIGNUM *p,
91 const BIGNUM *m, BN_CTX *ctx,
92 BN_MONT_CTX *m_ctx); /* Can be null */
93 int (*init)(RSA *rsa); /* called at new */
94 int (*finish)(RSA *rsa); /* called at free */
95 int flags; /* RSA_METHOD_FLAG_* things */
96 char *app_data; /* may be needed! */
97/* New sign and verify functions: some libraries don't allow arbitrary data
98 * to be signed/verified: this allows them to be used. Note: for this to work
99 * the RSA_public_decrypt() and RSA_private_encrypt() should *NOT* be used
100 * RSA_sign(), RSA_verify() should be used instead. Note: for backwards
101 * compatibility this functionality is only enabled if the RSA_FLAG_SIGN_VER
102 * option is set in 'flags'.
103 */
104 int (*rsa_sign)(int type, unsigned char *m, unsigned int m_len,
105 unsigned char *sigret, unsigned int *siglen, RSA *rsa);
106 int (*rsa_verify)(int dtype, unsigned char *m, unsigned int m_len,
107 unsigned char *sigbuf, unsigned int siglen, RSA *rsa);
108
109 } RSA_METHOD;
110
111struct rsa_st
112 {
113 /* The first parameter is used to pickup errors where
114 * this is passed instead of aEVP_PKEY, it is set to 0 */
115 int pad;
116 int version;
117#if 0
118 RSA_METHOD *meth;
119#else
120 struct engine_st *engine;
121#endif
122 BIGNUM *n;
123 BIGNUM *e;
124 BIGNUM *d;
125 BIGNUM *p;
126 BIGNUM *q;
127 BIGNUM *dmp1;
128 BIGNUM *dmq1;
129 BIGNUM *iqmp;
130 /* be careful using this if the RSA structure is shared */
131 CRYPTO_EX_DATA ex_data;
132 int references;
133 int flags;
134
135 /* Used to cache montgomery values */
136 BN_MONT_CTX *_method_mod_n;
137 BN_MONT_CTX *_method_mod_p;
138 BN_MONT_CTX *_method_mod_q;
139
140 /* all BIGNUM values are actually in the following data, if it is not
141 * NULL */
142 char *bignum_data;
143 BN_BLINDING *blinding;
144 };
145
146#define RSA_3 0x3L
147#define RSA_F4 0x10001L
148
149#define RSA_METHOD_FLAG_NO_CHECK 0x01 /* don't check pub/private match */
150
151#define RSA_FLAG_CACHE_PUBLIC 0x02
152#define RSA_FLAG_CACHE_PRIVATE 0x04
153#define RSA_FLAG_BLINDING 0x08
154#define RSA_FLAG_THREAD_SAFE 0x10
155/* This flag means the private key operations will be handled by rsa_mod_exp
156 * and that they do not depend on the private key components being present:
157 * for example a key stored in external hardware. Without this flag bn_mod_exp
158 * gets called when private key components are absent.
159 */
160#define RSA_FLAG_EXT_PKEY 0x20
161
162/* This flag in the RSA_METHOD enables the new rsa_sign, rsa_verify functions.
163 */
164#define RSA_FLAG_SIGN_VER 0x40
165
166#define RSA_PKCS1_PADDING 1
167#define RSA_SSLV23_PADDING 2
168#define RSA_NO_PADDING 3
169#define RSA_PKCS1_OAEP_PADDING 4
170
171#define RSA_set_app_data(s,arg) RSA_set_ex_data(s,0,arg)
172#define RSA_get_app_data(s) RSA_get_ex_data(s,0)
173
174RSA * RSA_new(void);
175#if 0
176RSA * RSA_new_method(RSA_METHOD *method);
177#else
178RSA * RSA_new_method(struct engine_st *engine);
179#endif
180int RSA_size(RSA *);
181RSA * RSA_generate_key(int bits, unsigned long e,void
182 (*callback)(int,int,void *),void *cb_arg);
183int RSA_check_key(RSA *);
184 /* next 4 return -1 on error */
185int RSA_public_encrypt(int flen, unsigned char *from,
186 unsigned char *to, RSA *rsa,int padding);
187int RSA_private_encrypt(int flen, unsigned char *from,
188 unsigned char *to, RSA *rsa,int padding);
189int RSA_public_decrypt(int flen, unsigned char *from,
190 unsigned char *to, RSA *rsa,int padding);
191int RSA_private_decrypt(int flen, unsigned char *from,
192 unsigned char *to, RSA *rsa,int padding);
193void RSA_free (RSA *r);
194
195int RSA_flags(RSA *r);
196
197void RSA_set_default_openssl_method(RSA_METHOD *meth);
198RSA_METHOD *RSA_get_default_openssl_method(void);
199RSA_METHOD *RSA_get_method(RSA *rsa);
200#if 0
201RSA_METHOD *RSA_set_method(RSA *rsa, RSA_METHOD *meth);
202#else
203int RSA_set_method(RSA *rsa, struct engine_st *engine);
204#endif
205
206/* This function needs the memory locking malloc callbacks to be installed */
207int RSA_memory_lock(RSA *r);
208
209/* If you have RSAref compiled in. */
210RSA_METHOD *RSA_PKCS1_RSAref(void);
211
212/* these are the actual SSLeay RSA functions */
213RSA_METHOD *RSA_PKCS1_SSLeay(void);
214
215RSA_METHOD *RSA_null_method(void);
216
217void ERR_load_RSA_strings(void );
218
219RSA * d2i_RSAPublicKey(RSA **a, unsigned char **pp, long length);
220int i2d_RSAPublicKey(RSA *a, unsigned char **pp);
221RSA * d2i_RSAPrivateKey(RSA **a, unsigned char **pp, long length);
222int i2d_RSAPrivateKey(RSA *a, unsigned char **pp);
223#ifndef NO_FP_API
224int RSA_print_fp(FILE *fp, RSA *r,int offset);
225#endif
226
227#ifndef NO_BIO
228int RSA_print(BIO *bp, RSA *r,int offset);
229#endif
230
231int i2d_RSA_NET(RSA *a, unsigned char **pp, int (*cb)(), int sgckey);
232RSA *d2i_RSA_NET(RSA **a, unsigned char **pp, long length, int (*cb)(), int sgckey);
233RSA *d2i_RSA_NET_2(RSA **a, unsigned char **pp, long length, int (*cb)(), int sgckey);
234
235int i2d_Netscape_RSA(RSA *a, unsigned char **pp, int (*cb)());
236RSA *d2i_Netscape_RSA(RSA **a, unsigned char **pp, long length, int (*cb)());
237/* Naughty internal function required elsewhere, to handle a MS structure
238 * that is the same as the netscape one :-) */
239RSA *d2i_Netscape_RSA_2(RSA **a, unsigned char **pp, long length, int (*cb)());
240
241/* The following 2 functions sign and verify a X509_SIG ASN1 object
242 * inside PKCS#1 padded RSA encryption */
243int RSA_sign(int type, unsigned char *m, unsigned int m_len,
244 unsigned char *sigret, unsigned int *siglen, RSA *rsa);
245int RSA_verify(int type, unsigned char *m, unsigned int m_len,
246 unsigned char *sigbuf, unsigned int siglen, RSA *rsa);
247
248/* The following 2 function sign and verify a ASN1_OCTET_STRING
249 * object inside PKCS#1 padded RSA encryption */
250int RSA_sign_ASN1_OCTET_STRING(int type, unsigned char *m, unsigned int m_len,
251 unsigned char *sigret, unsigned int *siglen, RSA *rsa);
252int RSA_verify_ASN1_OCTET_STRING(int type, unsigned char *m, unsigned int m_len,
253 unsigned char *sigbuf, unsigned int siglen, RSA *rsa);
254
255int RSA_blinding_on(RSA *rsa, BN_CTX *ctx);
256void RSA_blinding_off(RSA *rsa);
257
258int RSA_padding_add_PKCS1_type_1(unsigned char *to,int tlen,
259 unsigned char *f,int fl);
260int RSA_padding_check_PKCS1_type_1(unsigned char *to,int tlen,
261 unsigned char *f,int fl,int rsa_len);
262int RSA_padding_add_PKCS1_type_2(unsigned char *to,int tlen,
263 unsigned char *f,int fl);
264int RSA_padding_check_PKCS1_type_2(unsigned char *to,int tlen,
265 unsigned char *f,int fl,int rsa_len);
266int RSA_padding_add_PKCS1_OAEP(unsigned char *to,int tlen,
267 unsigned char *f,int fl,unsigned char *p,
268 int pl);
269int RSA_padding_check_PKCS1_OAEP(unsigned char *to,int tlen,
270 unsigned char *f,int fl,int rsa_len,
271 unsigned char *p,int pl);
272int RSA_padding_add_SSLv23(unsigned char *to,int tlen,
273 unsigned char *f,int fl);
274int RSA_padding_check_SSLv23(unsigned char *to,int tlen,
275 unsigned char *f,int fl,int rsa_len);
276int RSA_padding_add_none(unsigned char *to,int tlen,
277 unsigned char *f,int fl);
278int RSA_padding_check_none(unsigned char *to,int tlen,
279 unsigned char *f,int fl,int rsa_len);
280
281int RSA_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
282 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func);
283int RSA_set_ex_data(RSA *r,int idx,void *arg);
284void *RSA_get_ex_data(RSA *r, int idx);
285
286/* BEGIN ERROR CODES */
287/* The following lines are auto generated by the script mkerr.pl. Any changes
288 * made after this point may be overwritten when the script is next run.
289 */
290
291/* Error codes for the RSA functions. */
292
293/* Function codes. */
294#define RSA_F_MEMORY_LOCK 100
295#define RSA_F_RSA_CHECK_KEY 123
296#define RSA_F_RSA_EAY_PRIVATE_DECRYPT 101
297#define RSA_F_RSA_EAY_PRIVATE_ENCRYPT 102
298#define RSA_F_RSA_EAY_PUBLIC_DECRYPT 103
299#define RSA_F_RSA_EAY_PUBLIC_ENCRYPT 104
300#define RSA_F_RSA_GENERATE_KEY 105
301#define RSA_F_RSA_NEW_METHOD 106
302#define RSA_F_RSA_NULL 124
303#define RSA_F_RSA_PADDING_ADD_NONE 107
304#define RSA_F_RSA_PADDING_ADD_PKCS1_OAEP 121
305#define RSA_F_RSA_PADDING_ADD_PKCS1_TYPE_1 108
306#define RSA_F_RSA_PADDING_ADD_PKCS1_TYPE_2 109
307#define RSA_F_RSA_PADDING_ADD_SSLV23 110
308#define RSA_F_RSA_PADDING_CHECK_NONE 111
309#define RSA_F_RSA_PADDING_CHECK_PKCS1_OAEP 122
310#define RSA_F_RSA_PADDING_CHECK_PKCS1_TYPE_1 112
311#define RSA_F_RSA_PADDING_CHECK_PKCS1_TYPE_2 113
312#define RSA_F_RSA_PADDING_CHECK_SSLV23 114
313#define RSA_F_RSA_PRINT 115
314#define RSA_F_RSA_PRINT_FP 116
315#define RSA_F_RSA_SIGN 117
316#define RSA_F_RSA_SIGN_ASN1_OCTET_STRING 118
317#define RSA_F_RSA_VERIFY 119
318#define RSA_F_RSA_VERIFY_ASN1_OCTET_STRING 120
319
320/* Reason codes. */
321#define RSA_R_ALGORITHM_MISMATCH 100
322#define RSA_R_BAD_E_VALUE 101
323#define RSA_R_BAD_FIXED_HEADER_DECRYPT 102
324#define RSA_R_BAD_PAD_BYTE_COUNT 103
325#define RSA_R_BAD_SIGNATURE 104
326#define RSA_R_BLOCK_TYPE_IS_NOT_01 106
327#define RSA_R_BLOCK_TYPE_IS_NOT_02 107
328#define RSA_R_DATA_GREATER_THAN_MOD_LEN 108
329#define RSA_R_DATA_TOO_LARGE 109
330#define RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE 110
331#define RSA_R_DATA_TOO_SMALL 111
332#define RSA_R_DATA_TOO_SMALL_FOR_KEY_SIZE 122
333#define RSA_R_DIGEST_TOO_BIG_FOR_RSA_KEY 112
334#define RSA_R_DMP1_NOT_CONGRUENT_TO_D 124
335#define RSA_R_DMQ1_NOT_CONGRUENT_TO_D 125
336#define RSA_R_D_E_NOT_CONGRUENT_TO_1 123
337#define RSA_R_INVALID_MESSAGE_LENGTH 131
338#define RSA_R_IQMP_NOT_INVERSE_OF_Q 126
339#define RSA_R_KEY_SIZE_TOO_SMALL 120
340#define RSA_R_NULL_BEFORE_BLOCK_MISSING 113
341#define RSA_R_N_DOES_NOT_EQUAL_P_Q 127
342#define RSA_R_OAEP_DECODING_ERROR 121
343#define RSA_R_PADDING_CHECK_FAILED 114
344#define RSA_R_P_NOT_PRIME 128
345#define RSA_R_Q_NOT_PRIME 129
346#define RSA_R_RSA_OPERATIONS_NOT_SUPPORTED 130
347#define RSA_R_SSLV3_ROLLBACK_ATTACK 115
348#define RSA_R_THE_ASN1_OBJECT_IDENTIFIER_IS_NOT_KNOWN_FOR_THIS_MD 116
349#define RSA_R_UNKNOWN_ALGORITHM_TYPE 117
350#define RSA_R_UNKNOWN_PADDING_TYPE 118
351#define RSA_R_WRONG_SIGNATURE_LENGTH 119
352
353#ifdef __cplusplus
354}
355#endif
356#endif
357
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