crypto/openssl-0.9.7e/include/openssl/rsa.h

   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 #include <openssl/asn1.h>
  63
  64 #ifndef OPENSSL_NO_BIO
  65 #include <openssl/bio.h>
  66 #endif
  67 #include <openssl/bn.h>
  68 #include <openssl/crypto.h>
  69 #include <openssl/ossl_typ.h>
  70
  71 #ifdef OPENSSL_NO_RSA
  72 #error RSA is disabled.
  73 #endif
  74
  75 #if defined(OPENSSL_FIPS)
  76 #define FIPS_RSA_SIZE_T int
  77 #endif
  78
  79 #ifdef  __cplusplus
  80 extern "C" {
  81 #endif
  82
  83 typedef struct rsa_st RSA;
  84
  85 typedef struct rsa_meth_st
  86         {
  87         const char *name;
  88         int (*rsa_pub_enc)(int flen,const unsigned char *from,
  89                            unsigned char *to,
  90                            RSA *rsa,int padding);
  91         int (*rsa_pub_dec)(int flen,const unsigned char *from,
  92                            unsigned char *to,
  93                            RSA *rsa,int padding);
  94         int (*rsa_priv_enc)(int flen,const unsigned char *from,
  95                             unsigned char *to,
  96                             RSA *rsa,int padding);
  97         int (*rsa_priv_dec)(int flen,const unsigned char *from,
  98                             unsigned char *to,
  99                             RSA *rsa,int padding);
 100         int (*rsa_mod_exp)(BIGNUM *r0,const BIGNUM *I,RSA *rsa); /* Can be null */
 101         int (*bn_mod_exp)(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
 102                           const BIGNUM *m, BN_CTX *ctx,
 103                           BN_MONT_CTX *m_ctx); /* Can be null */
 104         int (*init)(RSA *rsa);          /* called at new */
 105         int (*finish)(RSA *rsa);        /* called at free */
 106         int flags;                      /* RSA_METHOD_FLAG_* things */
 107         char *app_data;                 /* may be needed! */
 108 /* New sign and verify functions: some libraries don't allow arbitrary data
 109  * to be signed/verified: this allows them to be used. Note: for this to work
 110  * the RSA_public_decrypt() and RSA_private_encrypt() should *NOT* be used
 111  * RSA_sign(), RSA_verify() should be used instead. Note: for backwards
 112  * compatibility this functionality is only enabled if the RSA_FLAG_SIGN_VER
 113  * option is set in 'flags'.
 114  */
 115         int (*rsa_sign)(int type,
 116                 const unsigned char *m, unsigned int m_length,
 117                 unsigned char *sigret, unsigned int *siglen, const RSA *rsa);
 118         int (*rsa_verify)(int dtype,
 119                 const unsigned char *m, unsigned int m_length,
 120                 unsigned char *sigbuf, unsigned int siglen, const RSA *rsa);
 121
 122         } RSA_METHOD;
 123
 124 struct rsa_st
 125         {
 126         /* The first parameter is used to pickup errors where
 127          * this is passed instead of aEVP_PKEY, it is set to 0 */
 128         int pad;
 129         long version;
 130         const RSA_METHOD *meth;
 131         /* functional reference if 'meth' is ENGINE-provided */
 132         ENGINE *engine;
 133         BIGNUM *n;
 134         BIGNUM *e;
 135         BIGNUM *d;
 136         BIGNUM *p;
 137         BIGNUM *q;
 138         BIGNUM *dmp1;
 139         BIGNUM *dmq1;
 140         BIGNUM *iqmp;
 141         /* be careful using this if the RSA structure is shared */
 142         CRYPTO_EX_DATA ex_data;
 143         int references;
 144         int flags;
 145
 146         /* Used to cache montgomery values */
 147         BN_MONT_CTX *_method_mod_n;
 148         BN_MONT_CTX *_method_mod_p;
 149         BN_MONT_CTX *_method_mod_q;
 150
 151         /* all BIGNUM values are actually in the following data, if it is not
 152          * NULL */
 153         char *bignum_data;
 154         BN_BLINDING *blinding;
 155         };
 156
 157 #define RSA_3   0x3L
 158 #define RSA_F4  0x10001L
 159
 160 #define RSA_METHOD_FLAG_NO_CHECK        0x01 /* don't check pub/private match */
 161
 162 #define RSA_FLAG_CACHE_PUBLIC           0x02
 163 #define RSA_FLAG_CACHE_PRIVATE          0x04
 164 #define RSA_FLAG_BLINDING               0x08
 165 #define RSA_FLAG_THREAD_SAFE            0x10
 166 /* This flag means the private key operations will be handled by rsa_mod_exp
 167  * and that they do not depend on the private key components being present:
 168  * for example a key stored in external hardware. Without this flag bn_mod_exp
 169  * gets called when private key components are absent.
 170  */
 171 #define RSA_FLAG_EXT_PKEY               0x20
 172
 173 /* This flag in the RSA_METHOD enables the new rsa_sign, rsa_verify functions.
 174  */
 175 #define RSA_FLAG_SIGN_VER               0x40
 176
 177 #define RSA_FLAG_NO_BLINDING            0x80 /* new with 0.9.6j and 0.9.7b; the built-in
 178                                               * RSA implementation now uses blinding by
 179                                               * default (ignoring RSA_FLAG_BLINDING),
 180                                               * but other engines might not need it
 181                                               */
 182
 183 #define RSA_PKCS1_PADDING       1
 184 #define RSA_SSLV23_PADDING      2
 185 #define RSA_NO_PADDING          3
 186 #define RSA_PKCS1_OAEP_PADDING  4
 187
 188 #define RSA_PKCS1_PADDING_SIZE  11
 189
 190 #define RSA_set_app_data(s,arg)         RSA_set_ex_data(s,0,arg)
 191 #define RSA_get_app_data(s)             RSA_get_ex_data(s,0)
 192
 193 RSA *   RSA_new(void);
 194 RSA *   RSA_new_method(ENGINE *engine);
 195 int     RSA_size(const RSA *);
 196 RSA *   RSA_generate_key(int bits, unsigned long e,void
 197                 (*callback)(int,int,void *),void *cb_arg);
 198 int     RSA_check_key(const RSA *);
 199         /* next 4 return -1 on error */
 200 int     RSA_public_encrypt(int flen, const unsigned char *from,
 201                 unsigned char *to, RSA *rsa,int padding);
 202 int     RSA_private_encrypt(int flen, const unsigned char *from,
 203                 unsigned char *to, RSA *rsa,int padding);
 204 int     RSA_public_decrypt(int flen, const unsigned char *from,
 205                 unsigned char *to, RSA *rsa,int padding);
 206 int     RSA_private_decrypt(int flen, const unsigned char *from,
 207                 unsigned char *to, RSA *rsa,int padding);
 208 void    RSA_free (RSA *r);
 209 /* "up" the RSA object's reference count */
 210 int     RSA_up_ref(RSA *r);
 211
 212 int     RSA_flags(const RSA *r);
 213
 214 void RSA_set_default_method(const RSA_METHOD *meth);
 215 const RSA_METHOD *RSA_get_default_method(void);
 216 const RSA_METHOD *RSA_get_method(const RSA *rsa);
 217 int RSA_set_method(RSA *rsa, const RSA_METHOD *meth);
 218
 219 /* This function needs the memory locking malloc callbacks to be installed */
 220 int RSA_memory_lock(RSA *r);
 221
 222 /* these are the actual SSLeay RSA functions */
 223 const RSA_METHOD *RSA_PKCS1_SSLeay(void);
 224
 225 const RSA_METHOD *RSA_null_method(void);
 226
 227 DECLARE_ASN1_ENCODE_FUNCTIONS_const(RSA, RSAPublicKey)
 228 DECLARE_ASN1_ENCODE_FUNCTIONS_const(RSA, RSAPrivateKey)
 229
 230 #ifndef OPENSSL_NO_FP_API
 231 int     RSA_print_fp(FILE *fp, const RSA *r,int offset);
 232 #endif
 233
 234 #ifndef OPENSSL_NO_BIO
 235 int     RSA_print(BIO *bp, const RSA *r,int offset);
 236 #endif
 237
 238 int i2d_RSA_NET(const RSA *a, unsigned char **pp, int (*cb)(), int sgckey);
 239 RSA *d2i_RSA_NET(RSA **a, const unsigned char **pp, long length, int (*cb)(), int sgckey);
 240
 241 int i2d_Netscape_RSA(const RSA *a, unsigned char **pp, int (*cb)());
 242 RSA *d2i_Netscape_RSA(RSA **a, const unsigned char **pp, long length, int (*cb)());
 243
 244 /* The following 2 functions sign and verify a X509_SIG ASN1 object
 245  * inside PKCS#1 padded RSA encryption */
 246 int RSA_sign(int type, const unsigned char *m, unsigned int m_length,
 247         unsigned char *sigret, unsigned int *siglen, RSA *rsa);
 248 int RSA_verify(int type, const unsigned char *m, unsigned int m_length,
 249         unsigned char *sigbuf, unsigned int siglen, RSA *rsa);
 250
 251 /* The following 2 function sign and verify a ASN1_OCTET_STRING
 252  * object inside PKCS#1 padded RSA encryption */
 253 int RSA_sign_ASN1_OCTET_STRING(int type,
 254         const unsigned char *m, unsigned int m_length,
 255         unsigned char *sigret, unsigned int *siglen, RSA *rsa);
 256 int RSA_verify_ASN1_OCTET_STRING(int type,
 257         const unsigned char *m, unsigned int m_length,
 258         unsigned char *sigbuf, unsigned int siglen, RSA *rsa);
 259
 260 int RSA_blinding_on(RSA *rsa, BN_CTX *ctx);
 261 void RSA_blinding_off(RSA *rsa);
 262
 263 int RSA_padding_add_PKCS1_type_1(unsigned char *to,int tlen,
 264         const unsigned char *f,int fl);
 265 int RSA_padding_check_PKCS1_type_1(unsigned char *to,int tlen,
 266         const unsigned char *f,int fl,int rsa_len);
 267 int RSA_padding_add_PKCS1_type_2(unsigned char *to,int tlen,
 268         const unsigned char *f,int fl);
 269 int RSA_padding_check_PKCS1_type_2(unsigned char *to,int tlen,
 270         const unsigned char *f,int fl,int rsa_len);
 271 int RSA_padding_add_PKCS1_OAEP(unsigned char *to,int tlen,
 272         const unsigned char *f,int fl,
 273         const unsigned char *p,int pl);
 274 int RSA_padding_check_PKCS1_OAEP(unsigned char *to,int tlen,
 275         const unsigned char *f,int fl,int rsa_len,
 276         const unsigned char *p,int pl);
 277 int RSA_padding_add_SSLv23(unsigned char *to,int tlen,
 278         const unsigned char *f,int fl);
 279 int RSA_padding_check_SSLv23(unsigned char *to,int tlen,
 280         const unsigned char *f,int fl,int rsa_len);
 281 int RSA_padding_add_none(unsigned char *to,int tlen,
 282         const unsigned char *f,int fl);
 283 int RSA_padding_check_none(unsigned char *to,int tlen,
 284         const unsigned char *f,int fl,int rsa_len);
 285
 286 int RSA_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
 287         CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func);
 288 int RSA_set_ex_data(RSA *r,int idx,void *arg);
 289 void *RSA_get_ex_data(const RSA *r, int idx);
 290
 291 RSA *RSAPublicKey_dup(RSA *rsa);
 292 RSA *RSAPrivateKey_dup(RSA *rsa);
 293
 294 /* BEGIN ERROR CODES */
 295 /* The following lines are auto generated by the script mkerr.pl. Any changes
 296  * made after this point may be overwritten when the script is next run.
 297  */
 298 void ERR_load_RSA_strings(void);
 299
 300 /* Error codes for the RSA functions. */
 301
 302 /* Function codes. */
 303 #define RSA_F_MEMORY_LOCK                                100
 304 #define RSA_F_RSA_CHECK_KEY                              123
 305 #define RSA_F_RSA_EAY_PRIVATE_DECRYPT                    101
 306 #define RSA_F_RSA_EAY_PRIVATE_ENCRYPT                    102
 307 #define RSA_F_RSA_EAY_PUBLIC_DECRYPT                     103
 308 #define RSA_F_RSA_EAY_PUBLIC_ENCRYPT                     104
 309 #define RSA_F_RSA_GENERATE_KEY                           105
 310 #define RSA_F_RSA_NEW_METHOD                             106
 311 #define RSA_F_RSA_NULL                                   124
 312 #define RSA_F_RSA_PADDING_ADD_NONE                       107
 313 #define RSA_F_RSA_PADDING_ADD_PKCS1_OAEP                 121
 314 #define RSA_F_RSA_PADDING_ADD_PKCS1_TYPE_1               108
 315 #define RSA_F_RSA_PADDING_ADD_PKCS1_TYPE_2               109
 316 #define RSA_F_RSA_PADDING_ADD_SSLV23                     110
 317 #define RSA_F_RSA_PADDING_CHECK_NONE                     111
 318 #define RSA_F_RSA_PADDING_CHECK_PKCS1_OAEP               122
 319 #define RSA_F_RSA_PADDING_CHECK_PKCS1_TYPE_1             112
 320 #define RSA_F_RSA_PADDING_CHECK_PKCS1_TYPE_2             113
 321 #define RSA_F_RSA_PADDING_CHECK_SSLV23                   114
 322 #define RSA_F_RSA_PRINT                                  115
 323 #define RSA_F_RSA_PRINT_FP                               116
 324 #define RSA_F_RSA_SIGN                                   117
 325 #define RSA_F_RSA_SIGN_ASN1_OCTET_STRING                 118
 326 #define RSA_F_RSA_VERIFY                                 119
 327 #define RSA_F_RSA_VERIFY_ASN1_OCTET_STRING               120
 328
 329 /* Reason codes. */
 330 #define RSA_R_ALGORITHM_MISMATCH                         100
 331 #define RSA_R_BAD_E_VALUE                                101
 332 #define RSA_R_BAD_FIXED_HEADER_DECRYPT                   102
 333 #define RSA_R_BAD_PAD_BYTE_COUNT                         103
 334 #define RSA_R_BAD_SIGNATURE                              104
 335 #define RSA_R_BLOCK_TYPE_IS_NOT_01                       106
 336 #define RSA_R_BLOCK_TYPE_IS_NOT_02                       107
 337 #define RSA_R_DATA_GREATER_THAN_MOD_LEN                  108
 338 #define RSA_R_DATA_TOO_LARGE                             109
 339 #define RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE                110
 340 #define RSA_R_DATA_TOO_LARGE_FOR_MODULUS                 132
 341 #define RSA_R_DATA_TOO_SMALL                             111
 342 #define RSA_R_DATA_TOO_SMALL_FOR_KEY_SIZE                122
 343 #define RSA_R_DIGEST_TOO_BIG_FOR_RSA_KEY                 112
 344 #define RSA_R_DMP1_NOT_CONGRUENT_TO_D                    124
 345 #define RSA_R_DMQ1_NOT_CONGRUENT_TO_D                    125
 346 #define RSA_R_D_E_NOT_CONGRUENT_TO_1                     123
 347 #define RSA_R_INVALID_MESSAGE_LENGTH                     131
 348 #define RSA_R_IQMP_NOT_INVERSE_OF_Q                      126
 349 #define RSA_R_KEY_SIZE_TOO_SMALL                         120
 350 #define RSA_R_NULL_BEFORE_BLOCK_MISSING                  113
 351 #define RSA_R_N_DOES_NOT_EQUAL_P_Q                       127
 352 #define RSA_R_OAEP_DECODING_ERROR                        121
 353 #define RSA_R_PADDING_CHECK_FAILED                       114
 354 #define RSA_R_P_NOT_PRIME                                128
 355 #define RSA_R_Q_NOT_PRIME                                129
 356 #define RSA_R_RSA_OPERATIONS_NOT_SUPPORTED               130
 357 #define RSA_R_SSLV3_ROLLBACK_ATTACK                      115
 358 #define RSA_R_THE_ASN1_OBJECT_IDENTIFIER_IS_NOT_KNOWN_FOR_THIS_MD 116
 359 #define RSA_R_UNKNOWN_ALGORITHM_TYPE                     117
 360 #define RSA_R_UNKNOWN_PADDING_TYPE                       118
 361 #define RSA_R_WRONG_SIGNATURE_LENGTH                     119
 362
 363 #ifdef  __cplusplus
 364 }
 365 #endif
 366 #endif