summaryrefslogtreecommitdiff
path: root/deps/openssl/openssl/include/openssl/rsa.h
blob: 9c28329f1d8b8daf37abf932983c1c4957853b5e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
/*
 * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the OpenSSL license (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

#ifndef HEADER_RSA_H
# define HEADER_RSA_H

# include <openssl/opensslconf.h>

# ifndef OPENSSL_NO_RSA
# include <openssl/asn1.h>
# include <openssl/bio.h>
# include <openssl/crypto.h>
# include <openssl/ossl_typ.h>
# if OPENSSL_API_COMPAT < 0x10100000L
#  include <openssl/bn.h>
# endif
# ifdef  __cplusplus
extern "C" {
# endif

/* The types RSA and RSA_METHOD are defined in ossl_typ.h */

# ifndef OPENSSL_RSA_MAX_MODULUS_BITS
#  define OPENSSL_RSA_MAX_MODULUS_BITS   16384
# endif

# define OPENSSL_RSA_FIPS_MIN_MODULUS_BITS 1024

# ifndef OPENSSL_RSA_SMALL_MODULUS_BITS
#  define OPENSSL_RSA_SMALL_MODULUS_BITS 3072
# endif
# ifndef OPENSSL_RSA_MAX_PUBEXP_BITS

/* exponent limit enforced for "large" modulus only */
#  define OPENSSL_RSA_MAX_PUBEXP_BITS    64
# endif

# define RSA_3   0x3L
# define RSA_F4  0x10001L

# define RSA_METHOD_FLAG_NO_CHECK        0x0001/* don't check pub/private
                                                * match */

# define RSA_FLAG_CACHE_PUBLIC           0x0002
# define RSA_FLAG_CACHE_PRIVATE          0x0004
# define RSA_FLAG_BLINDING               0x0008
# define RSA_FLAG_THREAD_SAFE            0x0010
/*
 * This flag means the private key operations will be handled by rsa_mod_exp
 * and that they do not depend on the private key components being present:
 * for example a key stored in external hardware. Without this flag
 * bn_mod_exp gets called when private key components are absent.
 */
# define RSA_FLAG_EXT_PKEY               0x0020

/*
 * new with 0.9.6j and 0.9.7b; the built-in
 * RSA implementation now uses blinding by
 * default (ignoring RSA_FLAG_BLINDING),
 * but other engines might not need it
 */
# define RSA_FLAG_NO_BLINDING            0x0080
# if OPENSSL_API_COMPAT < 0x10100000L
/*
 * Does nothing. Previously this switched off constant time behaviour.
 */
#  define RSA_FLAG_NO_CONSTTIME           0x0000
# endif
# if OPENSSL_API_COMPAT < 0x00908000L
/* deprecated name for the flag*/
/*
 * new with 0.9.7h; the built-in RSA
 * implementation now uses constant time
 * modular exponentiation for secret exponents
 * by default. This flag causes the
 * faster variable sliding window method to
 * be used for all exponents.
 */
#  define RSA_FLAG_NO_EXP_CONSTTIME RSA_FLAG_NO_CONSTTIME
# endif

# define EVP_PKEY_CTX_set_rsa_padding(ctx, pad) \
        EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, -1, EVP_PKEY_CTRL_RSA_PADDING, \
                                pad, NULL)

# define EVP_PKEY_CTX_get_rsa_padding(ctx, ppad) \
        EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, -1, \
                                EVP_PKEY_CTRL_GET_RSA_PADDING, 0, ppad)

# define EVP_PKEY_CTX_set_rsa_pss_saltlen(ctx, len) \
        EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, \
                                (EVP_PKEY_OP_SIGN|EVP_PKEY_OP_VERIFY), \
                                EVP_PKEY_CTRL_RSA_PSS_SALTLEN, \
                                len, NULL)

# define EVP_PKEY_CTX_get_rsa_pss_saltlen(ctx, plen) \
        EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, \
                                (EVP_PKEY_OP_SIGN|EVP_PKEY_OP_VERIFY), \
                                EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN, \
                                0, plen)

# define EVP_PKEY_CTX_set_rsa_keygen_bits(ctx, bits) \
        EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_KEYGEN, \
                                EVP_PKEY_CTRL_RSA_KEYGEN_BITS, bits, NULL)

# define EVP_PKEY_CTX_set_rsa_keygen_pubexp(ctx, pubexp) \
        EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_KEYGEN, \
                                EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP, 0, pubexp)

# define  EVP_PKEY_CTX_set_rsa_mgf1_md(ctx, md)  \
                EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, \
                        EVP_PKEY_OP_TYPE_SIG | EVP_PKEY_OP_TYPE_CRYPT, \
                                EVP_PKEY_CTRL_RSA_MGF1_MD, 0, (void *)md)

# define  EVP_PKEY_CTX_set_rsa_oaep_md(ctx, md)  \
                EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT,  \
                                EVP_PKEY_CTRL_RSA_OAEP_MD, 0, (void *)md)

# define  EVP_PKEY_CTX_get_rsa_mgf1_md(ctx, pmd) \
                EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, \
                        EVP_PKEY_OP_TYPE_SIG | EVP_PKEY_OP_TYPE_CRYPT, \
                                EVP_PKEY_CTRL_GET_RSA_MGF1_MD, 0, (void *)pmd)

# define  EVP_PKEY_CTX_get_rsa_oaep_md(ctx, pmd) \
                EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT,  \
                                EVP_PKEY_CTRL_GET_RSA_OAEP_MD, 0, (void *)pmd)

# define  EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, l, llen) \
                EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT,  \
                                EVP_PKEY_CTRL_RSA_OAEP_LABEL, llen, (void *)l)

# define  EVP_PKEY_CTX_get0_rsa_oaep_label(ctx, l)       \
                EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT,  \
                                EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL, 0, (void *)l)

# define EVP_PKEY_CTRL_RSA_PADDING       (EVP_PKEY_ALG_CTRL + 1)
# define EVP_PKEY_CTRL_RSA_PSS_SALTLEN   (EVP_PKEY_ALG_CTRL + 2)

# define EVP_PKEY_CTRL_RSA_KEYGEN_BITS   (EVP_PKEY_ALG_CTRL + 3)
# define EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP (EVP_PKEY_ALG_CTRL + 4)
# define EVP_PKEY_CTRL_RSA_MGF1_MD       (EVP_PKEY_ALG_CTRL + 5)

# define EVP_PKEY_CTRL_GET_RSA_PADDING           (EVP_PKEY_ALG_CTRL + 6)
# define EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN       (EVP_PKEY_ALG_CTRL + 7)
# define EVP_PKEY_CTRL_GET_RSA_MGF1_MD           (EVP_PKEY_ALG_CTRL + 8)

# define EVP_PKEY_CTRL_RSA_OAEP_MD       (EVP_PKEY_ALG_CTRL + 9)
# define EVP_PKEY_CTRL_RSA_OAEP_LABEL    (EVP_PKEY_ALG_CTRL + 10)

# define EVP_PKEY_CTRL_GET_RSA_OAEP_MD   (EVP_PKEY_ALG_CTRL + 11)
# define EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL (EVP_PKEY_ALG_CTRL + 12)

# define RSA_PKCS1_PADDING       1
# define RSA_SSLV23_PADDING      2
# define RSA_NO_PADDING          3
# define RSA_PKCS1_OAEP_PADDING  4
# define RSA_X931_PADDING        5
/* EVP_PKEY_ only */
# define RSA_PKCS1_PSS_PADDING   6

# define RSA_PKCS1_PADDING_SIZE  11

# define RSA_set_app_data(s,arg)         RSA_set_ex_data(s,0,arg)
# define RSA_get_app_data(s)             RSA_get_ex_data(s,0)

RSA *RSA_new(void);
RSA *RSA_new_method(ENGINE *engine);
int RSA_bits(const RSA *rsa);
int RSA_size(const RSA *rsa);
int RSA_security_bits(const RSA *rsa);

int RSA_set0_key(RSA *r, BIGNUM *n, BIGNUM *e, BIGNUM *d);
int RSA_set0_factors(RSA *r, BIGNUM *p, BIGNUM *q);
int RSA_set0_crt_params(RSA *r,BIGNUM *dmp1, BIGNUM *dmq1, BIGNUM *iqmp);
void RSA_get0_key(const RSA *r,
                  const BIGNUM **n, const BIGNUM **e, const BIGNUM **d);
void RSA_get0_factors(const RSA *r, const BIGNUM **p, const BIGNUM **q);
void RSA_get0_crt_params(const RSA *r,
                         const BIGNUM **dmp1, const BIGNUM **dmq1,
                         const BIGNUM **iqmp);
void RSA_clear_flags(RSA *r, int flags);
int RSA_test_flags(const RSA *r, int flags);
void RSA_set_flags(RSA *r, int flags);
ENGINE *RSA_get0_engine(const RSA *r);

/* Deprecated version */
DEPRECATEDIN_0_9_8(RSA *RSA_generate_key(int bits, unsigned long e, void
                                         (*callback) (int, int, void *),
                                         void *cb_arg))

/* New version */
int RSA_generate_key_ex(RSA *rsa, int bits, BIGNUM *e, BN_GENCB *cb);

int RSA_X931_derive_ex(RSA *rsa, BIGNUM *p1, BIGNUM *p2, BIGNUM *q1,
                       BIGNUM *q2, const BIGNUM *Xp1, const BIGNUM *Xp2,
                       const BIGNUM *Xp, const BIGNUM *Xq1, const BIGNUM *Xq2,
                       const BIGNUM *Xq, const BIGNUM *e, BN_GENCB *cb);
int RSA_X931_generate_key_ex(RSA *rsa, int bits, const BIGNUM *e,
                             BN_GENCB *cb);

int RSA_check_key(const RSA *);
int RSA_check_key_ex(const RSA *, BN_GENCB *cb);
        /* next 4 return -1 on error */
int RSA_public_encrypt(int flen, const unsigned char *from,
                       unsigned char *to, RSA *rsa, int padding);
int RSA_private_encrypt(int flen, const unsigned char *from,
                        unsigned char *to, RSA *rsa, int padding);
int RSA_public_decrypt(int flen, const unsigned char *from,
                       unsigned char *to, RSA *rsa, int padding);
int RSA_private_decrypt(int flen, const unsigned char *from,
                        unsigned char *to, RSA *rsa, int padding);
void RSA_free(RSA *r);
/* "up" the RSA object's reference count */
int RSA_up_ref(RSA *r);

int RSA_flags(const RSA *r);

void RSA_set_default_method(const RSA_METHOD *meth);
const RSA_METHOD *RSA_get_default_method(void);
const RSA_METHOD *RSA_get_method(const RSA *rsa);
int RSA_set_method(RSA *rsa, const RSA_METHOD *meth);

/* these are the actual RSA functions */
const RSA_METHOD *RSA_PKCS1_OpenSSL(void);

const RSA_METHOD *RSA_null_method(void);

DECLARE_ASN1_ENCODE_FUNCTIONS_const(RSA, RSAPublicKey)
DECLARE_ASN1_ENCODE_FUNCTIONS_const(RSA, RSAPrivateKey)

typedef struct rsa_pss_params_st {
    X509_ALGOR *hashAlgorithm;
    X509_ALGOR *maskGenAlgorithm;
    ASN1_INTEGER *saltLength;
    ASN1_INTEGER *trailerField;
} RSA_PSS_PARAMS;

DECLARE_ASN1_FUNCTIONS(RSA_PSS_PARAMS)

typedef struct rsa_oaep_params_st {
    X509_ALGOR *hashFunc;
    X509_ALGOR *maskGenFunc;
    X509_ALGOR *pSourceFunc;
} RSA_OAEP_PARAMS;

DECLARE_ASN1_FUNCTIONS(RSA_OAEP_PARAMS)

# ifndef OPENSSL_NO_STDIO
int RSA_print_fp(FILE *fp, const RSA *r, int offset);
# endif

int RSA_print(BIO *bp, const RSA *r, int offset);

/*
 * The following 2 functions sign and verify a X509_SIG ASN1 object inside
 * PKCS#1 padded RSA encryption
 */
int RSA_sign(int type, const unsigned char *m, unsigned int m_length,
             unsigned char *sigret, unsigned int *siglen, RSA *rsa);
int RSA_verify(int type, const unsigned char *m, unsigned int m_length,
               const unsigned char *sigbuf, unsigned int siglen, RSA *rsa);

/*
 * The following 2 function sign and verify a ASN1_OCTET_STRING object inside
 * PKCS#1 padded RSA encryption
 */
int RSA_sign_ASN1_OCTET_STRING(int type,
                               const unsigned char *m, unsigned int m_length,
                               unsigned char *sigret, unsigned int *siglen,
                               RSA *rsa);
int RSA_verify_ASN1_OCTET_STRING(int type, const unsigned char *m,
                                 unsigned int m_length, unsigned char *sigbuf,
                                 unsigned int siglen, RSA *rsa);

int RSA_blinding_on(RSA *rsa, BN_CTX *ctx);
void RSA_blinding_off(RSA *rsa);
BN_BLINDING *RSA_setup_blinding(RSA *rsa, BN_CTX *ctx);

int RSA_padding_add_PKCS1_type_1(unsigned char *to, int tlen,
                                 const unsigned char *f, int fl);
int RSA_padding_check_PKCS1_type_1(unsigned char *to, int tlen,
                                   const unsigned char *f, int fl,
                                   int rsa_len);
int RSA_padding_add_PKCS1_type_2(unsigned char *to, int tlen,
                                 const unsigned char *f, int fl);
int RSA_padding_check_PKCS1_type_2(unsigned char *to, int tlen,
                                   const unsigned char *f, int fl,
                                   int rsa_len);
int PKCS1_MGF1(unsigned char *mask, long len, const unsigned char *seed,
               long seedlen, const EVP_MD *dgst);
int RSA_padding_add_PKCS1_OAEP(unsigned char *to, int tlen,
                               const unsigned char *f, int fl,
                               const unsigned char *p, int pl);
int RSA_padding_check_PKCS1_OAEP(unsigned char *to, int tlen,
                                 const unsigned char *f, int fl, int rsa_len,
                                 const unsigned char *p, int pl);
int RSA_padding_add_PKCS1_OAEP_mgf1(unsigned char *to, int tlen,
                                    const unsigned char *from, int flen,
                                    const unsigned char *param, int plen,
                                    const EVP_MD *md, const EVP_MD *mgf1md);
int RSA_padding_check_PKCS1_OAEP_mgf1(unsigned char *to, int tlen,
                                      const unsigned char *from, int flen,
                                      int num, const unsigned char *param,
                                      int plen, const EVP_MD *md,
                                      const EVP_MD *mgf1md);
int RSA_padding_add_SSLv23(unsigned char *to, int tlen,
                           const unsigned char *f, int fl);
int RSA_padding_check_SSLv23(unsigned char *to, int tlen,
                             const unsigned char *f, int fl, int rsa_len);
int RSA_padding_add_none(unsigned char *to, int tlen, const unsigned char *f,
                         int fl);
int RSA_padding_check_none(unsigned char *to, int tlen,
                           const unsigned char *f, int fl, int rsa_len);
int RSA_padding_add_X931(unsigned char *to, int tlen, const unsigned char *f,
                         int fl);
int RSA_padding_check_X931(unsigned char *to, int tlen,
                           const unsigned char *f, int fl, int rsa_len);
int RSA_X931_hash_id(int nid);

int RSA_verify_PKCS1_PSS(RSA *rsa, const unsigned char *mHash,
                         const EVP_MD *Hash, const unsigned char *EM,
                         int sLen);
int RSA_padding_add_PKCS1_PSS(RSA *rsa, unsigned char *EM,
                              const unsigned char *mHash, const EVP_MD *Hash,
                              int sLen);

int RSA_verify_PKCS1_PSS_mgf1(RSA *rsa, const unsigned char *mHash,
                              const EVP_MD *Hash, const EVP_MD *mgf1Hash,
                              const unsigned char *EM, int sLen);

int RSA_padding_add_PKCS1_PSS_mgf1(RSA *rsa, unsigned char *EM,
                                   const unsigned char *mHash,
                                   const EVP_MD *Hash, const EVP_MD *mgf1Hash,
                                   int sLen);

#define RSA_get_ex_new_index(l, p, newf, dupf, freef) \
    CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_RSA, l, p, newf, dupf, freef)
int RSA_set_ex_data(RSA *r, int idx, void *arg);
void *RSA_get_ex_data(const RSA *r, int idx);

RSA *RSAPublicKey_dup(RSA *rsa);
RSA *RSAPrivateKey_dup(RSA *rsa);

/*
 * If this flag is set the RSA method is FIPS compliant and can be used in
 * FIPS mode. This is set in the validated module method. If an application
 * sets this flag in its own methods it is its responsibility to ensure the
 * result is compliant.
 */

# define RSA_FLAG_FIPS_METHOD                    0x0400

/*
 * If this flag is set the operations normally disabled in FIPS mode are
 * permitted it is then the applications responsibility to ensure that the
 * usage is compliant.
 */

# define RSA_FLAG_NON_FIPS_ALLOW                 0x0400
/*
 * Application has decided PRNG is good enough to generate a key: don't
 * check.
 */
# define RSA_FLAG_CHECKED                        0x0800

RSA_METHOD *RSA_meth_new(const char *name, int flags);
void RSA_meth_free(RSA_METHOD *meth);
RSA_METHOD *RSA_meth_dup(const RSA_METHOD *meth);
const char *RSA_meth_get0_name(const RSA_METHOD *meth);
int RSA_meth_set1_name(RSA_METHOD *meth, const char *name);
int RSA_meth_get_flags(const RSA_METHOD *meth);
int RSA_meth_set_flags(RSA_METHOD *meth, int flags);
void *RSA_meth_get0_app_data(const RSA_METHOD *meth);
int RSA_meth_set0_app_data(RSA_METHOD *meth, void *app_data);
int (*RSA_meth_get_pub_enc(const RSA_METHOD *meth))
    (int flen, const unsigned char *from,
     unsigned char *to, RSA *rsa, int padding);
int RSA_meth_set_pub_enc(RSA_METHOD *rsa,
                         int (*pub_enc) (int flen, const unsigned char *from,
                                         unsigned char *to, RSA *rsa,
                                         int padding));
int (*RSA_meth_get_pub_dec(const RSA_METHOD *meth))
    (int flen, const unsigned char *from,
     unsigned char *to, RSA *rsa, int padding);
int RSA_meth_set_pub_dec(RSA_METHOD *rsa,
                         int (*pub_dec) (int flen, const unsigned char *from,
                                         unsigned char *to, RSA *rsa,
                                         int padding));
int (*RSA_meth_get_priv_enc(const RSA_METHOD *meth))
    (int flen, const unsigned char *from,
     unsigned char *to, RSA *rsa, int padding);
int RSA_meth_set_priv_enc(RSA_METHOD *rsa,
                          int (*priv_enc) (int flen, const unsigned char *from,
                                           unsigned char *to, RSA *rsa,
                                           int padding));
int (*RSA_meth_get_priv_dec(const RSA_METHOD *meth))
    (int flen, const unsigned char *from,
     unsigned char *to, RSA *rsa, int padding);
int RSA_meth_set_priv_dec(RSA_METHOD *rsa,
                          int (*priv_dec) (int flen, const unsigned char *from,
                                           unsigned char *to, RSA *rsa,
                                           int padding));
int (*RSA_meth_get_mod_exp(const RSA_METHOD *meth))
    (BIGNUM *r0, const BIGNUM *i, RSA *rsa, BN_CTX *ctx);
int RSA_meth_set_mod_exp(RSA_METHOD *rsa,
                         int (*mod_exp) (BIGNUM *r0, const BIGNUM *i, RSA *rsa,
                                         BN_CTX *ctx));
int (*RSA_meth_get_bn_mod_exp(const RSA_METHOD *meth))
    (BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
     const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
int RSA_meth_set_bn_mod_exp(RSA_METHOD *rsa,
                            int (*bn_mod_exp) (BIGNUM *r,
                                               const BIGNUM *a,
                                               const BIGNUM *p,
                                               const BIGNUM *m,
                                               BN_CTX *ctx,
                                               BN_MONT_CTX *m_ctx));
int (*RSA_meth_get_init(const RSA_METHOD *meth)) (RSA *rsa);
int RSA_meth_set_init(RSA_METHOD *rsa, int (*init) (RSA *rsa));
int (*RSA_meth_get_finish(const RSA_METHOD *meth)) (RSA *rsa);
int RSA_meth_set_finish(RSA_METHOD *rsa, int (*finish) (RSA *rsa));
int (*RSA_meth_get_sign(const RSA_METHOD *meth))
    (int type,
     const unsigned char *m, unsigned int m_length,
     unsigned char *sigret, unsigned int *siglen,
     const RSA *rsa);
int RSA_meth_set_sign(RSA_METHOD *rsa,
                      int (*sign) (int type, const unsigned char *m,
                                   unsigned int m_length,
                                   unsigned char *sigret, unsigned int *siglen,
                                   const RSA *rsa));
int (*RSA_meth_get_verify(const RSA_METHOD *meth))
    (int dtype, const unsigned char *m,
     unsigned int m_length, const unsigned char *sigbuf,
     unsigned int siglen, const RSA *rsa);
int RSA_meth_set_verify(RSA_METHOD *rsa,
                        int (*verify) (int dtype, const unsigned char *m,
                                       unsigned int m_length,
                                       const unsigned char *sigbuf,
                                       unsigned int siglen, const RSA *rsa));
int (*RSA_meth_get_keygen(const RSA_METHOD *meth))
    (RSA *rsa, int bits, BIGNUM *e, BN_GENCB *cb);
int RSA_meth_set_keygen(RSA_METHOD *rsa,
                        int (*keygen) (RSA *rsa, int bits, BIGNUM *e,
                                       BN_GENCB *cb));

/* BEGIN ERROR CODES */
/*
 * The following lines are auto generated by the script mkerr.pl. Any changes
 * made after this point may be overwritten when the script is next run.
 */

int ERR_load_RSA_strings(void);

/* Error codes for the RSA functions. */

/* Function codes. */
# define RSA_F_CHECK_PADDING_MD                           140
# define RSA_F_ENCODE_PKCS1                               146
# define RSA_F_INT_RSA_VERIFY                             145
# define RSA_F_OLD_RSA_PRIV_DECODE                        147
# define RSA_F_PKEY_RSA_CTRL                              143
# define RSA_F_PKEY_RSA_CTRL_STR                          144
# define RSA_F_PKEY_RSA_SIGN                              142
# define RSA_F_PKEY_RSA_VERIFY                            149
# define RSA_F_PKEY_RSA_VERIFYRECOVER                     141
# define RSA_F_RSA_ALGOR_TO_MD                            156
# define RSA_F_RSA_BUILTIN_KEYGEN                         129
# define RSA_F_RSA_CHECK_KEY                              123
# define RSA_F_RSA_CHECK_KEY_EX                           160
# define RSA_F_RSA_CMS_DECRYPT                            159
# define RSA_F_RSA_ITEM_VERIFY                            148
# define RSA_F_RSA_METH_DUP                               161
# define RSA_F_RSA_METH_NEW                               162
# define RSA_F_RSA_METH_SET1_NAME                         163
# define RSA_F_RSA_MGF1_TO_MD                             157
# define RSA_F_RSA_NEW_METHOD                             106
# define RSA_F_RSA_NULL                                   124
# define RSA_F_RSA_NULL_PRIVATE_DECRYPT                   132
# define RSA_F_RSA_NULL_PRIVATE_ENCRYPT                   133
# define RSA_F_RSA_NULL_PUBLIC_DECRYPT                    134
# define RSA_F_RSA_NULL_PUBLIC_ENCRYPT                    135
# define RSA_F_RSA_OSSL_PRIVATE_DECRYPT                   101
# define RSA_F_RSA_OSSL_PRIVATE_ENCRYPT                   102
# define RSA_F_RSA_OSSL_PUBLIC_DECRYPT                    103
# define RSA_F_RSA_OSSL_PUBLIC_ENCRYPT                    104
# define RSA_F_RSA_PADDING_ADD_NONE                       107
# define RSA_F_RSA_PADDING_ADD_PKCS1_OAEP                 121
# define RSA_F_RSA_PADDING_ADD_PKCS1_OAEP_MGF1            154
# define RSA_F_RSA_PADDING_ADD_PKCS1_PSS                  125
# define RSA_F_RSA_PADDING_ADD_PKCS1_PSS_MGF1             152
# define RSA_F_RSA_PADDING_ADD_PKCS1_TYPE_1               108
# define RSA_F_RSA_PADDING_ADD_PKCS1_TYPE_2               109
# define RSA_F_RSA_PADDING_ADD_SSLV23                     110
# define RSA_F_RSA_PADDING_ADD_X931                       127
# define RSA_F_RSA_PADDING_CHECK_NONE                     111
# define RSA_F_RSA_PADDING_CHECK_PKCS1_OAEP               122
# define RSA_F_RSA_PADDING_CHECK_PKCS1_OAEP_MGF1          153
# define RSA_F_RSA_PADDING_CHECK_PKCS1_TYPE_1             112
# define RSA_F_RSA_PADDING_CHECK_PKCS1_TYPE_2             113
# define RSA_F_RSA_PADDING_CHECK_SSLV23                   114
# define RSA_F_RSA_PADDING_CHECK_X931                     128
# define RSA_F_RSA_PRINT                                  115
# define RSA_F_RSA_PRINT_FP                               116
# define RSA_F_RSA_PRIV_ENCODE                            138
# define RSA_F_RSA_PSS_TO_CTX                             155
# define RSA_F_RSA_PUB_DECODE                             139
# define RSA_F_RSA_SETUP_BLINDING                         136
# define RSA_F_RSA_SIGN                                   117
# define RSA_F_RSA_SIGN_ASN1_OCTET_STRING                 118
# define RSA_F_RSA_VERIFY                                 119
# define RSA_F_RSA_VERIFY_ASN1_OCTET_STRING               120
# define RSA_F_RSA_VERIFY_PKCS1_PSS_MGF1                  126

/* Reason codes. */
# define RSA_R_ALGORITHM_MISMATCH                         100
# define RSA_R_BAD_E_VALUE                                101
# define RSA_R_BAD_FIXED_HEADER_DECRYPT                   102
# define RSA_R_BAD_PAD_BYTE_COUNT                         103
# define RSA_R_BAD_SIGNATURE                              104
# define RSA_R_BLOCK_TYPE_IS_NOT_01                       106
# define RSA_R_BLOCK_TYPE_IS_NOT_02                       107
# define RSA_R_DATA_GREATER_THAN_MOD_LEN                  108
# define RSA_R_DATA_TOO_LARGE                             109
# define RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE                110
# define RSA_R_DATA_TOO_LARGE_FOR_MODULUS                 132
# define RSA_R_DATA_TOO_SMALL                             111
# define RSA_R_DATA_TOO_SMALL_FOR_KEY_SIZE                122
# define RSA_R_DIGEST_DOES_NOT_MATCH                      158
# define RSA_R_DIGEST_TOO_BIG_FOR_RSA_KEY                 112
# define RSA_R_DMP1_NOT_CONGRUENT_TO_D                    124
# define RSA_R_DMQ1_NOT_CONGRUENT_TO_D                    125
# define RSA_R_D_E_NOT_CONGRUENT_TO_1                     123
# define RSA_R_FIRST_OCTET_INVALID                        133
# define RSA_R_ILLEGAL_OR_UNSUPPORTED_PADDING_MODE        144
# define RSA_R_INVALID_DIGEST                             157
# define RSA_R_INVALID_DIGEST_LENGTH                      143
# define RSA_R_INVALID_HEADER                             137
# define RSA_R_INVALID_LABEL                              160
# define RSA_R_INVALID_MESSAGE_LENGTH                     131
# define RSA_R_INVALID_MGF1_MD                            156
# define RSA_R_INVALID_OAEP_PARAMETERS                    161
# define RSA_R_INVALID_PADDING                            138
# define RSA_R_INVALID_PADDING_MODE                       141
# define RSA_R_INVALID_PSS_PARAMETERS                     149
# define RSA_R_INVALID_PSS_SALTLEN                        146
# define RSA_R_INVALID_SALT_LENGTH                        150
# define RSA_R_INVALID_TRAILER                            139
# define RSA_R_INVALID_X931_DIGEST                        142
# define RSA_R_IQMP_NOT_INVERSE_OF_Q                      126
# define RSA_R_KEY_SIZE_TOO_SMALL                         120
# define RSA_R_LAST_OCTET_INVALID                         134
# define RSA_R_MODULUS_TOO_LARGE                          105
# define RSA_R_NO_PUBLIC_EXPONENT                         140
# define RSA_R_NULL_BEFORE_BLOCK_MISSING                  113
# define RSA_R_N_DOES_NOT_EQUAL_P_Q                       127
# define RSA_R_OAEP_DECODING_ERROR                        121
# define RSA_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE   148
# define RSA_R_PADDING_CHECK_FAILED                       114
# define RSA_R_PKCS_DECODING_ERROR                        159
# define RSA_R_P_NOT_PRIME                                128
# define RSA_R_Q_NOT_PRIME                                129
# define RSA_R_RSA_OPERATIONS_NOT_SUPPORTED               130
# define RSA_R_SLEN_CHECK_FAILED                          136
# define RSA_R_SLEN_RECOVERY_FAILED                       135
# define RSA_R_SSLV3_ROLLBACK_ATTACK                      115
# define RSA_R_THE_ASN1_OBJECT_IDENTIFIER_IS_NOT_KNOWN_FOR_THIS_MD 116
# define RSA_R_UNKNOWN_ALGORITHM_TYPE                     117
# define RSA_R_UNKNOWN_DIGEST                             166
# define RSA_R_UNKNOWN_MASK_DIGEST                        151
# define RSA_R_UNKNOWN_PADDING_TYPE                       118
# define RSA_R_UNSUPPORTED_ENCRYPTION_TYPE                162
# define RSA_R_UNSUPPORTED_LABEL_SOURCE                   163
# define RSA_R_UNSUPPORTED_MASK_ALGORITHM                 153
# define RSA_R_UNSUPPORTED_MASK_PARAMETER                 154
# define RSA_R_UNSUPPORTED_SIGNATURE_TYPE                 155
# define RSA_R_VALUE_MISSING                              147
# define RSA_R_WRONG_SIGNATURE_LENGTH                     119

#  ifdef  __cplusplus
}
#  endif
# endif
#endif