1 /* crypto/dsa/dsa.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 /* 60 * The DSS routines are based on patches supplied by 61 * Steven Schoch <schoch@sheba.arc.nasa.gov>. He basically did the 62 * work and I have just tweaked them a little to fit into my 63 * stylistic vision for SSLeay :-) */ 64 65 module deimos.openssl.dsa; 66 67 import deimos.openssl._d_util; 68 69 import deimos.openssl.evp; // Needed for EVP_PKEY_ALG_CTRL. 70 71 public import deimos.openssl.e_os2; 72 73 version (OPENSSL_NO_DSA) { 74 static assert(false, "DSA is disabled."); 75 } 76 77 version(OPENSSL_NO_BIO) {} else { 78 public import deimos.openssl.bio; 79 } 80 public import deimos.openssl.crypto; 81 public import deimos.openssl.ossl_typ; 82 83 version(OPENSSL_NO_DEPRECATED) {} else { 84 public import deimos.openssl.bn; 85 version(OPENSSL_NO_DH) {} else { 86 public import deimos.openssl.dh; 87 } 88 } 89 90 // #ifndef OPENSSL_DSA_MAX_MODULUS_BITS 91 enum OPENSSL_DSA_MAX_MODULUS_BITS = 10000; 92 // #endif 93 94 enum DSA_FLAG_CACHE_MONT_P = 0x01; 95 enum DSA_FLAG_NO_EXP_CONSTTIME = 0x02; /* new with 0.9.7h; the built-in DSA 96 * implementation now uses constant time 97 * modular exponentiation for secret exponents 98 * by default. This flag causes the 99 * faster variable sliding window method to 100 * be used for all exponents. 101 */ 102 103 /* If this flag is set the DSA method is FIPS compliant and can be used 104 * in FIPS mode. This is set in the validated module method. If an 105 * application sets this flag in its own methods it is its reposibility 106 * to ensure the result is compliant. 107 */ 108 109 enum DSA_FLAG_FIPS_METHOD = 0x0400; 110 111 /* If this flag is set the operations normally disabled in FIPS mode are 112 * permitted it is then the applications responsibility to ensure that the 113 * usage is compliant. 114 */ 115 116 enum DSA_FLAG_NON_FIPS_ALLOW = 0x0400; 117 118 extern (C): 119 nothrow: 120 121 /* Already defined in ossl_typ.h */ 122 /* typedef dsa_st DSA; */ 123 /* typedef dsa_method DSA_METHOD; */ 124 125 struct DSA_SIG_st { 126 BIGNUM* r; 127 BIGNUM* s; 128 } 129 alias DSA_SIG_st DSA_SIG; 130 131 struct dsa_method 132 { 133 const(char)* name; 134 ExternC!(DSA_SIG* function(const(ubyte)* dgst, int dlen, DSA* dsa)) dsa_do_sign; 135 ExternC!(int function(DSA* dsa, BN_CTX* ctx_in, BIGNUM** kinvp, 136 BIGNUM** rp)) dsa_sign_setup; 137 ExternC!(int function(const(ubyte)* dgst, int dgst_len, 138 DSA_SIG* sig, DSA* dsa)) dsa_do_verify; 139 ExternC!(int function(DSA* dsa, BIGNUM* rr, BIGNUM* a1, BIGNUM* p1, 140 BIGNUM* a2, BIGNUM* p2, BIGNUM* m, BN_CTX* ctx, 141 BN_MONT_CTX* in_mont)) dsa_mod_exp; 142 ExternC!(int function(DSA* dsa, BIGNUM* r, BIGNUM* a, const(BIGNUM)* p, 143 const(BIGNUM)* m, BN_CTX* ctx, 144 BN_MONT_CTX* m_ctx)) bn_mod_exp; /* Can be null */ 145 ExternC!(int function(DSA* dsa)) init_; 146 ExternC!(int function(DSA* dsa)) finish; 147 int flags; 148 char* app_data; 149 /* If this is non-NULL, it is used to generate DSA parameters */ 150 ExternC!(int function(DSA* dsa, int bits, 151 const(ubyte)* seed, int seed_len, 152 int* counter_ret, c_ulong* h_ret, 153 BN_GENCB* cb)) dsa_paramgen; 154 /* If this is non-NULL, it is used to generate DSA keys */ 155 ExternC!(int function(DSA* dsa)) dsa_keygen; 156 }; 157 158 struct dsa_st 159 { 160 /* This first variable is used to pick up errors where 161 * a DSA is passed instead of of a EVP_PKEY */ 162 int pad; 163 c_long version_; 164 int write_params; 165 BIGNUM* p; 166 BIGNUM* q; /* == 20 */ 167 BIGNUM* g; 168 169 BIGNUM* pub_key; /* y public key */ 170 BIGNUM* priv_key; /* x private key */ 171 172 BIGNUM* kinv; /* Signing pre-calc */ 173 BIGNUM* r; /* Signing pre-calc */ 174 175 int flags; 176 /* Normally used to cache montgomery values */ 177 BN_MONT_CTX* method_mont_p; 178 int references; 179 CRYPTO_EX_DATA ex_data; 180 const(DSA_METHOD)* meth; 181 /* functional reference if 'meth' is ENGINE-provided */ 182 ENGINE* engine; 183 }; 184 185 auto d2i_DSAparams_fp()(FILE* fp, void** x) { 186 return cast(DSA*)ASN1_d2i_fp(cast(ExternC!(void* function()))&DSA_new, 187 cast(d2i_of_void*)&d2i_DSAparams,fp,x); 188 } 189 auto i2d_DSAparams_fp()(FILE* fp, void* x) { return ASN1_i2d_fp(cast(d2i_of_void*)&i2d_DSAparams,fp, x); } 190 auto d2i_DSAparams_bio()(BIO* bp, void** x) { return ASN1_d2i_bio_of!DSA(&DSA_new,&d2i_DSAparams,bp,x); } 191 auto i2d_DSAparams_bio()(BIO* bp, void** x) { return ASN1_i2d_bio_of_const!DSA(&i2d_DSAparams,bp,x); } 192 193 DSA* DSAparams_dup(DSA* x); 194 DSA_SIG* DSA_SIG_new(); 195 void DSA_SIG_free(DSA_SIG* a); 196 int i2d_DSA_SIG(const(DSA_SIG)* a, ubyte** pp); 197 DSA_SIG* d2i_DSA_SIG(DSA_SIG** v, const(ubyte)** pp, c_long length); 198 199 DSA_SIG* DSA_do_sign(const(ubyte)* dgst,int dlen,DSA* dsa); 200 int DSA_do_verify(const(ubyte)* dgst,int dgst_len, 201 DSA_SIG* sig,DSA* dsa); 202 203 const(DSA_METHOD)* DSA_OpenSSL(); 204 205 void DSA_set_default_method(const(DSA_METHOD)*); 206 const(DSA_METHOD)* DSA_get_default_method(); 207 int DSA_set_method(DSA* dsa, const(DSA_METHOD)*); 208 209 DSA* DSA_new(); 210 DSA* DSA_new_method(ENGINE* engine); 211 void DSA_free (DSA* r); 212 /* "up" the DSA object's reference count */ 213 int DSA_up_ref(DSA* r); 214 int DSA_size(const(DSA)*); 215 /* next 4 return -1 on error */ 216 int DSA_sign_setup( DSA* dsa,BN_CTX* ctx_in,BIGNUM** kinvp,BIGNUM** rp); 217 int DSA_sign(int type,const(ubyte)* dgst,int dlen, 218 ubyte* sig, uint* siglen, DSA* dsa); 219 int DSA_verify(int type,const(ubyte)* dgst,int dgst_len, 220 const(ubyte)* sigbuf, int siglen, DSA* dsa); 221 int DSA_get_ex_new_index(c_long argl, void* argp, CRYPTO_EX_new* new_func, 222 CRYPTO_EX_dup* dup_func, CRYPTO_EX_free* free_func); 223 int DSA_set_ex_data(DSA* d, int idx, void* arg); 224 void* DSA_get_ex_data(DSA* d, int idx); 225 226 DSA* d2i_DSAPublicKey(DSA** a, const(ubyte)** pp, c_long length); 227 DSA* d2i_DSAPrivateKey(DSA** a, const(ubyte)** pp, c_long length); 228 DSA* d2i_DSAparams(DSA** a, const(ubyte)** pp, c_long length); 229 230 /* Deprecated version */ 231 version(OPENSSL_NO_DEPRECATED) {} else { 232 DSA* DSA_generate_parameters(int bits, 233 ubyte* seed,int seed_len, 234 int* counter_ret, c_ulong* h_ret,ExternC!(void 235 function(int, int, void*)) callback,void* cb_arg); 236 } /* !defined(OPENSSL_NO_DEPRECATED) */ 237 238 /* New version */ 239 int DSA_generate_parameters_ex(DSA* dsa, int bits, 240 const(ubyte)* seed,int seed_len, 241 int* counter_ret, c_ulong* h_ret, BN_GENCB* cb); 242 243 int DSA_generate_key(DSA* a); 244 int i2d_DSAPublicKey(const(DSA)* a, ubyte** pp); 245 int i2d_DSAPrivateKey(const(DSA)* a, ubyte** pp); 246 int i2d_DSAparams(const(DSA)* a,ubyte** pp); 247 248 version(OPENSSL_NO_BIO) {} else { 249 int DSAparams_print(BIO* bp, const(DSA)* x); 250 int DSA_print(BIO* bp, const(DSA)* x, int off); 251 } 252 version(OPENSSL_NO_FP_API) {} else { 253 int DSAparams_print_fp(FILE* fp, const(DSA)* x); 254 int DSA_print_fp(FILE* bp, const(DSA)* x, int off); 255 } 256 257 enum DSS_prime_checks = 50; 258 /* Primality test according to FIPS PUB 186[-1], Appendix 2.1: 259 * 50 rounds of Rabin-Miller */ 260 int DSA_is_prime()(const(BIGNUM)* n, ExternC!(void function(int,int,void*)) callback, void* cb_arg) { 261 return BN_is_prime(n, DSS_prime_checks, callback, null, cb_arg); 262 } 263 264 265 version(OPENSSL_NO_DH) {} else { 266 /* Convert DSA structure (key or just parameters) into DH structure 267 * (be careful to avoid small subgroup attacks when using this!) */ 268 DH* DSA_dup_DH(const(DSA)* r); 269 } 270 271 auto EVP_PKEY_CTX_set_dsa_paramgen_bits()(EVP_PKEY_CTX* ctx, int nbits) { 272 return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DSA, EVP_PKEY_OP_PARAMGEN, 273 EVP_PKEY_CTRL_DSA_PARAMGEN_BITS, nbits, null); 274 } 275 276 enum EVP_PKEY_CTRL_DSA_PARAMGEN_BITS = (EVP_PKEY_ALG_CTRL + 1); 277 enum EVP_PKEY_CTRL_DSA_PARAMGEN_Q_BITS = (EVP_PKEY_ALG_CTRL + 2); 278 enum EVP_PKEY_CTRL_DSA_PARAMGEN_MD = (EVP_PKEY_ALG_CTRL + 3); 279 280 /* BEGIN ERROR CODES */ 281 /* The following lines are auto generated by the script mkerr.pl. Any changes 282 * made after this point may be overwritten when the script is next run. 283 */ 284 void ERR_load_DSA_strings(); 285 286 /* Error codes for the DSA functions. */ 287 288 /* Function codes. */ 289 enum DSA_F_D2I_DSA_SIG = 110; 290 enum DSA_F_DO_DSA_PRINT = 104; 291 enum DSA_F_DSAPARAMS_PRINT = 100; 292 enum DSA_F_DSAPARAMS_PRINT_FP = 101; 293 enum DSA_F_DSA_DO_SIGN = 112; 294 enum DSA_F_DSA_DO_VERIFY = 113; 295 enum DSA_F_DSA_GENERATE_KEY = 124; 296 enum DSA_F_DSA_GENERATE_PARAMETERS_EX = 123; 297 enum DSA_F_DSA_NEW_METHOD = 103; 298 enum DSA_F_DSA_PARAM_DECODE = 119; 299 enum DSA_F_DSA_PRINT_FP = 105; 300 enum DSA_F_DSA_PRIV_DECODE = 115; 301 enum DSA_F_DSA_PRIV_ENCODE = 116; 302 enum DSA_F_DSA_PUB_DECODE = 117; 303 enum DSA_F_DSA_PUB_ENCODE = 118; 304 enum DSA_F_DSA_SIGN = 106; 305 enum DSA_F_DSA_SIGN_SETUP = 107; 306 enum DSA_F_DSA_SIG_NEW = 109; 307 enum DSA_F_DSA_SIG_PRINT = 125; 308 enum DSA_F_DSA_VERIFY = 108; 309 enum DSA_F_I2D_DSA_SIG = 111; 310 enum DSA_F_OLD_DSA_PRIV_DECODE = 122; 311 enum DSA_F_PKEY_DSA_CTRL = 120; 312 enum DSA_F_PKEY_DSA_KEYGEN = 121; 313 enum DSA_F_SIG_CB = 114; 314 315 /* Reason codes. */ 316 enum DSA_R_BAD_Q_VALUE = 102; 317 enum DSA_R_BN_DECODE_ERROR = 108; 318 enum DSA_R_BN_ERROR = 109; 319 enum DSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE = 100; 320 enum DSA_R_DECODE_ERROR = 104; 321 enum DSA_R_INVALID_DIGEST_TYPE = 106; 322 enum DSA_R_MISSING_PARAMETERS = 101; 323 enum DSA_R_MODULUS_TOO_LARGE = 103; 324 enum DSA_R_NEED_NEW_SETUP_VALUES = 110; 325 enum DSA_R_NON_FIPS_DSA_METHOD = 111; 326 enum DSA_R_NO_PARAMETERS_SET = 107; 327 enum DSA_R_PARAMETER_ENCODING_ERROR = 105;