Eneboo - Documentación para desarrolladores
src/libdigidoc/openssl/crypto/dsa/dsa.h
Ir a la documentación de este archivo.
00001 /* crypto/dsa/dsa.h */
00002 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
00003  * All rights reserved.
00004  *
00005  * This package is an SSL implementation written
00006  * by Eric Young (eay@cryptsoft.com).
00007  * The implementation was written so as to conform with Netscapes SSL.
00008  * 
00009  * This library is free for commercial and non-commercial use as long as
00010  * the following conditions are aheared to.  The following conditions
00011  * apply to all code found in this distribution, be it the RC4, RSA,
00012  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
00013  * included with this distribution is covered by the same copyright terms
00014  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
00015  * 
00016  * Copyright remains Eric Young's, and as such any Copyright notices in
00017  * the code are not to be removed.
00018  * If this package is used in a product, Eric Young should be given attribution
00019  * as the author of the parts of the library used.
00020  * This can be in the form of a textual message at program startup or
00021  * in documentation (online or textual) provided with the package.
00022  * 
00023  * Redistribution and use in source and binary forms, with or without
00024  * modification, are permitted provided that the following conditions
00025  * are met:
00026  * 1. Redistributions of source code must retain the copyright
00027  *    notice, this list of conditions and the following disclaimer.
00028  * 2. Redistributions in binary form must reproduce the above copyright
00029  *    notice, this list of conditions and the following disclaimer in the
00030  *    documentation and/or other materials provided with the distribution.
00031  * 3. All advertising materials mentioning features or use of this software
00032  *    must display the following acknowledgement:
00033  *    "This product includes cryptographic software written by
00034  *     Eric Young (eay@cryptsoft.com)"
00035  *    The word 'cryptographic' can be left out if the rouines from the library
00036  *    being used are not cryptographic related :-).
00037  * 4. If you include any Windows specific code (or a derivative thereof) from 
00038  *    the apps directory (application code) you must include an acknowledgement:
00039  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
00040  * 
00041  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
00042  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00043  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00044  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
00045  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00046  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
00047  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
00048  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
00049  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
00050  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00051  * SUCH DAMAGE.
00052  * 
00053  * The licence and distribution terms for any publically available version or
00054  * derivative of this code cannot be changed.  i.e. this code cannot simply be
00055  * copied and put under another distribution licence
00056  * [including the GNU Public Licence.]
00057  */
00058 
00059 /*
00060  * The DSS routines are based on patches supplied by
00061  * Steven Schoch <schoch@sheba.arc.nasa.gov>.  He basically did the
00062  * work and I have just tweaked them a little to fit into my
00063  * stylistic vision for SSLeay :-) */
00064 
00065 #ifndef HEADER_DSA_H
00066 #define HEADER_DSA_H
00067 
00068 #include <openssl/e_os2.h>
00069 
00070 #ifdef OPENSSL_NO_DSA
00071 #error DSA is disabled.
00072 #endif
00073 
00074 #ifndef OPENSSL_NO_BIO
00075 #include <openssl/bio.h>
00076 #endif
00077 #include <openssl/crypto.h>
00078 #include <openssl/ossl_typ.h>
00079 
00080 #ifndef OPENSSL_NO_DEPRECATED
00081 #include <openssl/bn.h>
00082 #ifndef OPENSSL_NO_DH
00083 # include <openssl/dh.h>
00084 #endif
00085 #endif
00086 
00087 #ifndef OPENSSL_DSA_MAX_MODULUS_BITS
00088 # define OPENSSL_DSA_MAX_MODULUS_BITS   10000
00089 #endif
00090 
00091 #define OPENSSL_DSA_FIPS_MIN_MODULUS_BITS 1024
00092 
00093 #define DSA_FLAG_CACHE_MONT_P   0x01
00094 #define DSA_FLAG_NO_EXP_CONSTTIME       0x02 /* new with 0.9.7h; the built-in DSA
00095                                               * implementation now uses constant time
00096                                               * modular exponentiation for secret exponents
00097                                               * by default. This flag causes the
00098                                               * faster variable sliding window method to
00099                                               * be used for all exponents.
00100                                               */
00101 
00102 /* If this flag is set the DSA method is FIPS compliant and can be used
00103  * in FIPS mode. This is set in the validated module method. If an
00104  * application sets this flag in its own methods it is its reposibility
00105  * to ensure the result is compliant.
00106  */
00107 
00108 #define DSA_FLAG_FIPS_METHOD                    0x0400
00109 
00110 /* If this flag is set the operations normally disabled in FIPS mode are
00111  * permitted it is then the applications responsibility to ensure that the
00112  * usage is compliant.
00113  */
00114 
00115 #define DSA_FLAG_NON_FIPS_ALLOW                 0x0400
00116 
00117 #ifdef OPENSSL_FIPS
00118 #define FIPS_DSA_SIZE_T int
00119 #endif
00120 
00121 #ifdef  __cplusplus
00122 extern "C" {
00123 #endif
00124 
00125 /* Already defined in ossl_typ.h */
00126 /* typedef struct dsa_st DSA; */
00127 /* typedef struct dsa_method DSA_METHOD; */
00128 
00129 typedef struct DSA_SIG_st
00130         {
00131         BIGNUM *r;
00132         BIGNUM *s;
00133         } DSA_SIG;
00134 
00135 struct dsa_method
00136         {
00137         const char *name;
00138         DSA_SIG * (*dsa_do_sign)(const unsigned char *dgst, int dlen, DSA *dsa);
00139         int (*dsa_sign_setup)(DSA *dsa, BN_CTX *ctx_in, BIGNUM **kinvp,
00140                                                                 BIGNUM **rp);
00141         int (*dsa_do_verify)(const unsigned char *dgst, int dgst_len,
00142                                                         DSA_SIG *sig, DSA *dsa);
00143         int (*dsa_mod_exp)(DSA *dsa, BIGNUM *rr, BIGNUM *a1, BIGNUM *p1,
00144                         BIGNUM *a2, BIGNUM *p2, BIGNUM *m, BN_CTX *ctx,
00145                         BN_MONT_CTX *in_mont);
00146         int (*bn_mod_exp)(DSA *dsa, BIGNUM *r, BIGNUM *a, const BIGNUM *p,
00147                                 const BIGNUM *m, BN_CTX *ctx,
00148                                 BN_MONT_CTX *m_ctx); /* Can be null */
00149         int (*init)(DSA *dsa);
00150         int (*finish)(DSA *dsa);
00151         int flags;
00152         char *app_data;
00153         /* If this is non-NULL, it is used to generate DSA parameters */
00154         int (*dsa_paramgen)(DSA *dsa, int bits,
00155                         unsigned char *seed, int seed_len,
00156                         int *counter_ret, unsigned long *h_ret,
00157                         BN_GENCB *cb);
00158         /* If this is non-NULL, it is used to generate DSA keys */
00159         int (*dsa_keygen)(DSA *dsa);
00160         };
00161 
00162 struct dsa_st
00163         {
00164         /* This first variable is used to pick up errors where
00165          * a DSA is passed instead of of a EVP_PKEY */
00166         int pad;
00167         long version;
00168         int write_params;
00169         BIGNUM *p;
00170         BIGNUM *q;      /* == 20 */
00171         BIGNUM *g;
00172 
00173         BIGNUM *pub_key;  /* y public key */
00174         BIGNUM *priv_key; /* x private key */
00175 
00176         BIGNUM *kinv;   /* Signing pre-calc */
00177         BIGNUM *r;      /* Signing pre-calc */
00178 
00179         int flags;
00180         /* Normally used to cache montgomery values */
00181         BN_MONT_CTX *method_mont_p;
00182         int references;
00183         CRYPTO_EX_DATA ex_data;
00184         const DSA_METHOD *meth;
00185         /* functional reference if 'meth' is ENGINE-provided */
00186         ENGINE *engine;
00187         };
00188 
00189 #define DSAparams_dup(x) ASN1_dup_of_const(DSA,i2d_DSAparams,d2i_DSAparams,x)
00190 #define d2i_DSAparams_fp(fp,x) (DSA *)ASN1_d2i_fp((char *(*)())DSA_new, \
00191                 (char *(*)())d2i_DSAparams,(fp),(unsigned char **)(x))
00192 #define i2d_DSAparams_fp(fp,x) ASN1_i2d_fp(i2d_DSAparams,(fp), \
00193                 (unsigned char *)(x))
00194 #define d2i_DSAparams_bio(bp,x) ASN1_d2i_bio_of(DSA,DSA_new,d2i_DSAparams,bp,x)
00195 #define i2d_DSAparams_bio(bp,x) ASN1_i2d_bio_of_const(DSA,i2d_DSAparams,bp,x)
00196 
00197 
00198 DSA_SIG * DSA_SIG_new(void);
00199 void    DSA_SIG_free(DSA_SIG *a);
00200 int     i2d_DSA_SIG(const DSA_SIG *a, unsigned char **pp);
00201 DSA_SIG * d2i_DSA_SIG(DSA_SIG **v, const unsigned char **pp, long length);
00202 
00203 DSA_SIG * DSA_do_sign(const unsigned char *dgst,int dlen,DSA *dsa);
00204 int     DSA_do_verify(const unsigned char *dgst,int dgst_len,
00205                       DSA_SIG *sig,DSA *dsa);
00206 
00207 const DSA_METHOD *DSA_OpenSSL(void);
00208 
00209 void    DSA_set_default_method(const DSA_METHOD *);
00210 const DSA_METHOD *DSA_get_default_method(void);
00211 int     DSA_set_method(DSA *dsa, const DSA_METHOD *);
00212 
00213 #ifdef OPENSSL_FIPS
00214 DSA *   FIPS_dsa_new(void);
00215 void    FIPS_dsa_free (DSA *r);
00216 #endif
00217 
00218 DSA *   DSA_new(void);
00219 DSA *   DSA_new_method(ENGINE *engine);
00220 void    DSA_free (DSA *r);
00221 /* "up" the DSA object's reference count */
00222 int     DSA_up_ref(DSA *r);
00223 int     DSA_size(const DSA *);
00224         /* next 4 return -1 on error */
00225 int     DSA_sign_setup( DSA *dsa,BN_CTX *ctx_in,BIGNUM **kinvp,BIGNUM **rp);
00226 int     DSA_sign(int type,const unsigned char *dgst,int dlen,
00227                 unsigned char *sig, unsigned int *siglen, DSA *dsa);
00228 int     DSA_verify(int type,const unsigned char *dgst,int dgst_len,
00229                 const unsigned char *sigbuf, int siglen, DSA *dsa);
00230 int DSA_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
00231              CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func);
00232 int DSA_set_ex_data(DSA *d, int idx, void *arg);
00233 void *DSA_get_ex_data(DSA *d, int idx);
00234 
00235 DSA *   d2i_DSAPublicKey(DSA **a, const unsigned char **pp, long length);
00236 DSA *   d2i_DSAPrivateKey(DSA **a, const unsigned char **pp, long length);
00237 DSA *   d2i_DSAparams(DSA **a, const unsigned char **pp, long length);
00238 
00239 /* Deprecated version */
00240 #ifndef OPENSSL_NO_DEPRECATED
00241 DSA *   DSA_generate_parameters(int bits,
00242                 unsigned char *seed,int seed_len,
00243                 int *counter_ret, unsigned long *h_ret,void
00244                 (*callback)(int, int, void *),void *cb_arg);
00245 #endif /* !defined(OPENSSL_NO_DEPRECATED) */
00246 
00247 /* New version */
00248 int     DSA_generate_parameters_ex(DSA *dsa, int bits,
00249                 unsigned char *seed,int seed_len,
00250                 int *counter_ret, unsigned long *h_ret, BN_GENCB *cb);
00251 
00252 int     DSA_generate_key(DSA *a);
00253 int     i2d_DSAPublicKey(const DSA *a, unsigned char **pp);
00254 int     i2d_DSAPrivateKey(const DSA *a, unsigned char **pp);
00255 int     i2d_DSAparams(const DSA *a,unsigned char **pp);
00256 
00257 #ifndef OPENSSL_NO_BIO
00258 int     DSAparams_print(BIO *bp, const DSA *x);
00259 int     DSA_print(BIO *bp, const DSA *x, int off);
00260 #endif
00261 #ifndef OPENSSL_NO_FP_API
00262 int     DSAparams_print_fp(FILE *fp, const DSA *x);
00263 int     DSA_print_fp(FILE *bp, const DSA *x, int off);
00264 #endif
00265 
00266 #define DSS_prime_checks 50
00267 /* Primality test according to FIPS PUB 186[-1], Appendix 2.1:
00268  * 50 rounds of Rabin-Miller */
00269 #define DSA_is_prime(n, callback, cb_arg) \
00270         BN_is_prime(n, DSS_prime_checks, callback, NULL, cb_arg)
00271 
00272 #ifndef OPENSSL_NO_DH
00273 /* Convert DSA structure (key or just parameters) into DH structure
00274  * (be careful to avoid small subgroup attacks when using this!) */
00275 DH *DSA_dup_DH(const DSA *r);
00276 #endif
00277 
00278 #ifdef OPENSSL_FIPS
00279 int FIPS_dsa_sig_encode(unsigned char *out, DSA_SIG *sig);
00280 int FIPS_dsa_sig_decode(DSA_SIG *sig, const unsigned char *in, int inlen);
00281 #endif
00282 
00283 /* BEGIN ERROR CODES */
00284 /* The following lines are auto generated by the script mkerr.pl. Any changes
00285  * made after this point may be overwritten when the script is next run.
00286  */
00287 void ERR_load_DSA_strings(void);
00288 
00289 /* Error codes for the DSA functions. */
00290 
00291 /* Function codes. */
00292 #define DSA_F_D2I_DSA_SIG                                110
00293 #define DSA_F_DSAPARAMS_PRINT                            100
00294 #define DSA_F_DSAPARAMS_PRINT_FP                         101
00295 #define DSA_F_DSA_BUILTIN_KEYGEN                         119
00296 #define DSA_F_DSA_BUILTIN_PARAMGEN                       118
00297 #define DSA_F_DSA_DO_SIGN                                112
00298 #define DSA_F_DSA_DO_VERIFY                              113
00299 #define DSA_F_DSA_GENERATE_PARAMETERS                    117
00300 #define DSA_F_DSA_NEW_METHOD                             103
00301 #define DSA_F_DSA_PRINT                                  104
00302 #define DSA_F_DSA_PRINT_FP                               105
00303 #define DSA_F_DSA_SET_DEFAULT_METHOD                     115
00304 #define DSA_F_DSA_SET_METHOD                             116
00305 #define DSA_F_DSA_SIGN                                   106
00306 #define DSA_F_DSA_SIGN_SETUP                             107
00307 #define DSA_F_DSA_SIG_NEW                                109
00308 #define DSA_F_DSA_VERIFY                                 108
00309 #define DSA_F_I2D_DSA_SIG                                111
00310 #define DSA_F_SIG_CB                                     114
00311 
00312 /* Reason codes. */
00313 #define DSA_R_BAD_Q_VALUE                                102
00314 #define DSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE                100
00315 #define DSA_R_KEY_SIZE_TOO_SMALL                         106
00316 #define DSA_R_MISSING_PARAMETERS                         101
00317 #define DSA_R_MODULUS_TOO_LARGE                          103
00318 #define DSA_R_NON_FIPS_METHOD                            104
00319 #define DSA_R_OPERATION_NOT_ALLOWED_IN_FIPS_MODE         105
00320 
00321 #ifdef  __cplusplus
00322 }
00323 #endif
00324 #endif
 Todo Clases Namespaces Archivos Funciones Variables 'typedefs' Enumeraciones Valores de enumeraciones Propiedades Amigas 'defines'