1 /* $OpenBSD: dsa.h,v 1.30 2018/03/17 15:19:12 tb Exp $ */ 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 core.stdc.config.c_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 libressl_d.openssl.dsa; 66 67 68 private static import core.stdc.config; 69 private static import libressl_d.compat.stdio; 70 private static import libressl_d.openssl.evp; 71 public import libressl_d.openssl.bio; 72 public import libressl_d.openssl.bn; 73 public import libressl_d.openssl.crypto; 74 public import libressl_d.openssl.opensslconf; 75 public import libressl_d.openssl.ossl_typ; 76 77 version (OPENSSL_NO_DSA) { 78 static assert(false, "DSA is disabled."); 79 } 80 81 version (OPENSSL_NO_BIO) { 82 } else { 83 public import libressl_d.openssl.bio; 84 } 85 86 version (OPENSSL_NO_DEPRECATED) { 87 } else { 88 public import libressl_d.openssl.bn; 89 90 version (OPENSSL_NO_DH) { 91 } else { 92 public import libressl_d.openssl.dh; 93 } 94 } 95 96 version (OPENSSL_DSA_MAX_MODULUS_BITS) { 97 } else { 98 enum OPENSSL_DSA_MAX_MODULUS_BITS = 10000; 99 } 100 101 enum DSA_FLAG_CACHE_MONT_P = 0x01; 102 103 /** 104 * If this flag is set the DSA method is FIPS compliant and can be used 105 * in FIPS mode. This is set in the validated module method. If an 106 * application sets this flag in its own methods it is its reposibility 107 * to ensure the result is compliant. 108 */ 109 enum DSA_FLAG_FIPS_METHOD = 0x0400; 110 111 /** 112 * If this flag is set the operations normally disabled in FIPS mode are 113 * permitted it is then the applications responsibility to ensure that the 114 * usage is compliant. 115 */ 116 enum DSA_FLAG_NON_FIPS_ALLOW = 0x0400; 117 118 extern (C): 119 nothrow @nogc: 120 121 /* Already defined in ossl_typ.h */ 122 /* alias DSA = .dsa.dsa_st; */ 123 /* alias DSA_METHOD = .dsa_method; */ 124 125 struct DSA_SIG_st 126 { 127 libressl_d.openssl.ossl_typ.BIGNUM* r; 128 libressl_d.openssl.ossl_typ.BIGNUM* s; 129 } 130 131 alias DSA_SIG = .DSA_SIG_st; 132 133 struct dsa_method 134 { 135 const (char)* name; 136 .DSA_SIG* function(const (ubyte)* dgst, int dlen, libressl_d.openssl.ossl_typ.DSA* dsa) dsa_do_sign; 137 int function(libressl_d.openssl.ossl_typ.DSA* dsa, libressl_d.openssl.ossl_typ.BN_CTX* ctx_in, libressl_d.openssl.ossl_typ.BIGNUM** kinvp, libressl_d.openssl.ossl_typ.BIGNUM** rp) dsa_sign_setup; 138 int function(const (ubyte)* dgst, int dgst_len, .DSA_SIG* sig, libressl_d.openssl.ossl_typ.DSA* dsa) dsa_do_verify; 139 int function(libressl_d.openssl.ossl_typ.DSA* dsa, libressl_d.openssl.ossl_typ.BIGNUM* rr, libressl_d.openssl.ossl_typ.BIGNUM* a1, libressl_d.openssl.ossl_typ.BIGNUM* p1, libressl_d.openssl.ossl_typ.BIGNUM* a2, libressl_d.openssl.ossl_typ.BIGNUM* p2, libressl_d.openssl.ossl_typ.BIGNUM* m, libressl_d.openssl.ossl_typ.BN_CTX* ctx, libressl_d.openssl.ossl_typ.BN_MONT_CTX* in_mont) dsa_mod_exp; 140 141 /** 142 * Can be null 143 */ 144 int function(libressl_d.openssl.ossl_typ.DSA* dsa, libressl_d.openssl.ossl_typ.BIGNUM* r, libressl_d.openssl.ossl_typ.BIGNUM* a, const (libressl_d.openssl.ossl_typ.BIGNUM)* p, const (libressl_d.openssl.ossl_typ.BIGNUM)* m, libressl_d.openssl.ossl_typ.BN_CTX* ctx, libressl_d.openssl.ossl_typ.BN_MONT_CTX* m_ctx) bn_mod_exp; 145 146 int function(libressl_d.openssl.ossl_typ.DSA* dsa) init; 147 int function(libressl_d.openssl.ossl_typ.DSA* dsa) finish; 148 int flags; 149 char* app_data; 150 151 /** 152 * If this is non-null, it is used to generate DSA parameters 153 */ 154 int function(libressl_d.openssl.ossl_typ.DSA* dsa, int bits, const (ubyte)* seed, int seed_len, int* counter_ret, core.stdc.config.c_ulong* h_ret, libressl_d.openssl.ossl_typ.BN_GENCB* cb) dsa_paramgen; 155 156 /** 157 * If this is non-null, it is used to generate DSA keys 158 */ 159 int function(libressl_d.openssl.ossl_typ.DSA* dsa) dsa_keygen; 160 } 161 162 struct dsa_st 163 { 164 /** 165 * This first variable is used to pick up errors where 166 * a DSA is passed instead of of a EVP_PKEY 167 */ 168 int pad; 169 170 core.stdc.config.c_long version_; 171 int write_params; 172 libressl_d.openssl.ossl_typ.BIGNUM* p; 173 174 /** 175 * == 20 176 */ 177 libressl_d.openssl.ossl_typ.BIGNUM* q; 178 179 libressl_d.openssl.ossl_typ.BIGNUM* g; 180 181 /** 182 * y public key 183 */ 184 libressl_d.openssl.ossl_typ.BIGNUM* pub_key; 185 186 /** 187 * x private key 188 */ 189 libressl_d.openssl.ossl_typ.BIGNUM* priv_key; 190 191 /** 192 * Signing pre-calc 193 */ 194 libressl_d.openssl.ossl_typ.BIGNUM* kinv; 195 196 /** 197 * Signing pre-calc 198 */ 199 libressl_d.openssl.ossl_typ.BIGNUM* r; 200 201 int flags; 202 /* Normally used to cache montgomery values */ 203 libressl_d.openssl.ossl_typ.BN_MONT_CTX* method_mont_p; 204 int references; 205 libressl_d.openssl.ossl_typ.CRYPTO_EX_DATA ex_data; 206 const (libressl_d.openssl.ossl_typ.DSA_METHOD)* meth; 207 208 /** 209 * functional reference if 'meth' is ENGINE-provided 210 */ 211 libressl_d.openssl.ossl_typ.ENGINE* engine; 212 } 213 214 libressl_d.openssl.ossl_typ.DSA* d2i_DSAparams_bio(libressl_d.openssl.bio.BIO* bp, libressl_d.openssl.ossl_typ.DSA** a); 215 int i2d_DSAparams_bio(libressl_d.openssl.bio.BIO* bp, libressl_d.openssl.ossl_typ.DSA* a); 216 libressl_d.openssl.ossl_typ.DSA* d2i_DSAparams_fp(libressl_d.compat.stdio.FILE* fp, libressl_d.openssl.ossl_typ.DSA** a); 217 int i2d_DSAparams_fp(libressl_d.compat.stdio.FILE* fp, libressl_d.openssl.ossl_typ.DSA* a); 218 219 libressl_d.openssl.ossl_typ.DSA* DSAparams_dup(libressl_d.openssl.ossl_typ.DSA* x); 220 .DSA_SIG* DSA_SIG_new(); 221 void DSA_SIG_free(.DSA_SIG* a); 222 int i2d_DSA_SIG(const (.DSA_SIG)* a, ubyte** pp); 223 .DSA_SIG* d2i_DSA_SIG(.DSA_SIG** v, const (ubyte)** pp, core.stdc.config.c_long length_); 224 void DSA_SIG_get0(const (.DSA_SIG)* sig, const (libressl_d.openssl.ossl_typ.BIGNUM)** pr, const (libressl_d.openssl.ossl_typ.BIGNUM)** ps); 225 int DSA_SIG_set0(.DSA_SIG* sig, libressl_d.openssl.ossl_typ.BIGNUM* r, libressl_d.openssl.ossl_typ.BIGNUM* s); 226 227 .DSA_SIG* DSA_do_sign(const (ubyte)* dgst, int dlen, libressl_d.openssl.ossl_typ.DSA* dsa); 228 int DSA_do_verify(const (ubyte)* dgst, int dgst_len, .DSA_SIG* sig, libressl_d.openssl.ossl_typ.DSA* dsa); 229 230 const (libressl_d.openssl.ossl_typ.DSA_METHOD)* DSA_OpenSSL(); 231 232 void DSA_set_default_method(const (libressl_d.openssl.ossl_typ.DSA_METHOD)*); 233 const (libressl_d.openssl.ossl_typ.DSA_METHOD)* DSA_get_default_method(); 234 int DSA_set_method(libressl_d.openssl.ossl_typ.DSA* dsa, const (libressl_d.openssl.ossl_typ.DSA_METHOD)*); 235 236 libressl_d.openssl.ossl_typ.DSA* DSA_new(); 237 libressl_d.openssl.ossl_typ.DSA* DSA_new_method(libressl_d.openssl.ossl_typ.ENGINE* engine); 238 void DSA_free(libressl_d.openssl.ossl_typ.DSA* r); 239 /* "up" the DSA object's reference count */ 240 int DSA_up_ref(libressl_d.openssl.ossl_typ.DSA* r); 241 int DSA_size(const (libressl_d.openssl.ossl_typ.DSA)*); 242 /* next 4 return -1 on error */ 243 int DSA_sign_setup(libressl_d.openssl.ossl_typ.DSA* dsa, libressl_d.openssl.ossl_typ.BN_CTX* ctx_in, libressl_d.openssl.ossl_typ.BIGNUM** kinvp, libressl_d.openssl.ossl_typ.BIGNUM** rp); 244 int DSA_sign(int type, const (ubyte)* dgst, int dlen, ubyte* sig, uint* siglen, libressl_d.openssl.ossl_typ.DSA* dsa); 245 int DSA_verify(int type, const (ubyte)* dgst, int dgst_len, const (ubyte)* sigbuf, int siglen, libressl_d.openssl.ossl_typ.DSA* dsa); 246 int DSA_get_ex_new_index(core.stdc.config.c_long argl, void* argp, libressl_d.openssl.ossl_typ.CRYPTO_EX_new* new_func, libressl_d.openssl.ossl_typ.CRYPTO_EX_dup* dup_func, libressl_d.openssl.ossl_typ.CRYPTO_EX_free* free_func); 247 int DSA_set_ex_data(libressl_d.openssl.ossl_typ.DSA* d, int idx, void* arg); 248 void* DSA_get_ex_data(libressl_d.openssl.ossl_typ.DSA* d, int idx); 249 250 libressl_d.openssl.ossl_typ.DSA* d2i_DSAPublicKey(libressl_d.openssl.ossl_typ.DSA** a, const (ubyte)** pp, core.stdc.config.c_long length_); 251 int i2d_DSAPublicKey(const (libressl_d.openssl.ossl_typ.DSA)* a, ubyte** pp); 252 extern __gshared const libressl_d.openssl.ossl_typ.ASN1_ITEM DSAPublicKey_it; 253 254 libressl_d.openssl.ossl_typ.DSA* d2i_DSAPrivateKey(libressl_d.openssl.ossl_typ.DSA** a, const (ubyte)** pp, core.stdc.config.c_long length_); 255 int i2d_DSAPrivateKey(const (libressl_d.openssl.ossl_typ.DSA)* a, ubyte** pp); 256 extern __gshared const libressl_d.openssl.ossl_typ.ASN1_ITEM DSAPrivateKey_it; 257 258 libressl_d.openssl.ossl_typ.DSA* d2i_DSAparams(libressl_d.openssl.ossl_typ.DSA** a, const (ubyte)** pp, core.stdc.config.c_long length_); 259 int i2d_DSAparams(const (libressl_d.openssl.ossl_typ.DSA)* a, ubyte** pp); 260 extern __gshared const libressl_d.openssl.ossl_typ.ASN1_ITEM DSAparams_it; 261 262 /* Deprecated version */ 263 version (OPENSSL_NO_DEPRECATED) { 264 } else { 265 libressl_d.openssl.ossl_typ.DSA* DSA_generate_parameters(int bits, ubyte* seed, int seed_len, int* counter_ret, core.stdc.config.c_ulong* h_ret, void function(int, int, void*) callback, void* cb_arg); 266 } 267 268 /* New version */ 269 int DSA_generate_parameters_ex(libressl_d.openssl.ossl_typ.DSA* dsa, int bits, const (ubyte)* seed, int seed_len, int* counter_ret, core.stdc.config.c_ulong* h_ret, libressl_d.openssl.ossl_typ.BN_GENCB* cb); 270 271 int DSA_generate_key(libressl_d.openssl.ossl_typ.DSA* a); 272 273 version (OPENSSL_NO_BIO) { 274 } else { 275 int DSAparams_print(libressl_d.openssl.bio.BIO* bp, const (libressl_d.openssl.ossl_typ.DSA)* x); 276 int DSA_print(libressl_d.openssl.bio.BIO* bp, const (libressl_d.openssl.ossl_typ.DSA)* x, int off); 277 } 278 279 int DSAparams_print_fp(libressl_d.compat.stdio.FILE* fp, const (libressl_d.openssl.ossl_typ.DSA)* x); 280 int DSA_print_fp(libressl_d.compat.stdio.FILE* bp, const (libressl_d.openssl.ossl_typ.DSA)* x, int off); 281 282 enum DSS_prime_checks = 50; 283 /* 284 * Primality test according to FIPS PUB 186[-1], Appendix 2.1: 285 * 50 rounds of Rabin-Miller 286 */ 287 pragma(inline, true) 288 int DSA_is_prime(const (libressl_d.openssl.ossl_typ.BIGNUM)* n, void function(int, int, void*) callback, void* cb_arg) 289 290 do 291 { 292 return libressl_d.openssl.bn.BN_is_prime(n, .DSS_prime_checks, callback, null, cb_arg); 293 } 294 295 version (OPENSSL_NO_DH) { 296 } else { 297 /* 298 * Convert DSA structure (key or just parameters) into DH structure 299 * (be careful to avoid small subgroup attacks when using this!) 300 */ 301 libressl_d.openssl.ossl_typ.DH* DSA_dup_DH(const (libressl_d.openssl.ossl_typ.DSA)* r); 302 } 303 304 void DSA_get0_pqg(const (libressl_d.openssl.ossl_typ.DSA)* d, const (libressl_d.openssl.ossl_typ.BIGNUM)** p, const (libressl_d.openssl.ossl_typ.BIGNUM)** q, const (libressl_d.openssl.ossl_typ.BIGNUM)** g); 305 int DSA_set0_pqg(libressl_d.openssl.ossl_typ.DSA* d, libressl_d.openssl.ossl_typ.BIGNUM* p, libressl_d.openssl.ossl_typ.BIGNUM* q, libressl_d.openssl.ossl_typ.BIGNUM* g); 306 void DSA_get0_key(const (libressl_d.openssl.ossl_typ.DSA)* d, const (libressl_d.openssl.ossl_typ.BIGNUM)** pub_key, const (libressl_d.openssl.ossl_typ.BIGNUM)** priv_key); 307 int DSA_set0_key(libressl_d.openssl.ossl_typ.DSA* d, libressl_d.openssl.ossl_typ.BIGNUM* pub_key, libressl_d.openssl.ossl_typ.BIGNUM* priv_key); 308 void DSA_clear_flags(libressl_d.openssl.ossl_typ.DSA* d, int flags); 309 int DSA_test_flags(const (libressl_d.openssl.ossl_typ.DSA)* d, int flags); 310 void DSA_set_flags(libressl_d.openssl.ossl_typ.DSA* d, int flags); 311 libressl_d.openssl.ossl_typ.ENGINE* DSA_get0_engine(libressl_d.openssl.ossl_typ.DSA* d); 312 313 libressl_d.openssl.ossl_typ.DSA_METHOD* DSA_meth_new(const (char)* name, int flags); 314 void DSA_meth_free(libressl_d.openssl.ossl_typ.DSA_METHOD* meth); 315 libressl_d.openssl.ossl_typ.DSA_METHOD* DSA_meth_dup(const (libressl_d.openssl.ossl_typ.DSA_METHOD)* meth); 316 int DSA_meth_set_sign(libressl_d.openssl.ossl_typ.DSA_METHOD* meth, DSA_SIG* function(const (ubyte)*, int, libressl_d.openssl.ossl_typ.DSA*) sign); 317 int DSA_meth_set_finish(libressl_d.openssl.ossl_typ.DSA_METHOD* meth, int function(libressl_d.openssl.ossl_typ.DSA*) finish); 318 319 pragma(inline, true) 320 int EVP_PKEY_CTX_set_dsa_paramgen_bits(libressl_d.openssl.ossl_typ.EVP_PKEY_CTX* ctx, int nbits) 321 322 do 323 { 324 return libressl_d.openssl.evp.EVP_PKEY_CTX_ctrl(ctx, libressl_d.openssl.evp.EVP_PKEY_DSA, libressl_d.openssl.evp.EVP_PKEY_OP_PARAMGEN, .EVP_PKEY_CTRL_DSA_PARAMGEN_BITS, nbits, null); 325 } 326 327 enum EVP_PKEY_CTRL_DSA_PARAMGEN_BITS = libressl_d.openssl.evp.EVP_PKEY_ALG_CTRL + 1; 328 enum EVP_PKEY_CTRL_DSA_PARAMGEN_Q_BITS = libressl_d.openssl.evp.EVP_PKEY_ALG_CTRL + 2; 329 enum EVP_PKEY_CTRL_DSA_PARAMGEN_MD = libressl_d.openssl.evp.EVP_PKEY_ALG_CTRL + 3; 330 331 /* BEGIN ERROR CODES */ 332 /** 333 * The following lines are auto generated by the script mkerr.pl. Any changes 334 * made after this point may be overwritten when the script is next run. 335 */ 336 void ERR_load_DSA_strings(); 337 338 /* Error codes for the DSA functions. */ 339 340 /* Function codes. */ 341 enum DSA_F_D2I_DSA_SIG = 110; 342 enum DSA_F_DO_DSA_PRINT = 104; 343 enum DSA_F_DSAPARAMS_PRINT = 100; 344 enum DSA_F_DSAPARAMS_PRINT_FP = 101; 345 enum DSA_F_DSA_DO_SIGN = 112; 346 enum DSA_F_DSA_DO_VERIFY = 113; 347 enum DSA_F_DSA_GENERATE_KEY = 124; 348 enum DSA_F_DSA_GENERATE_PARAMETERS_EX = 123; 349 enum DSA_F_DSA_NEW_METHOD = 103; 350 enum DSA_F_DSA_PARAM_DECODE = 119; 351 enum DSA_F_DSA_PRINT_FP = 105; 352 enum DSA_F_DSA_PRIV_DECODE = 115; 353 enum DSA_F_DSA_PRIV_ENCODE = 116; 354 enum DSA_F_DSA_PUB_DECODE = 117; 355 enum DSA_F_DSA_PUB_ENCODE = 118; 356 enum DSA_F_DSA_SIGN = 106; 357 enum DSA_F_DSA_SIGN_SETUP = 107; 358 enum DSA_F_DSA_SIG_NEW = 109; 359 enum DSA_F_DSA_SIG_PRINT = 125; 360 enum DSA_F_DSA_VERIFY = 108; 361 enum DSA_F_I2D_DSA_SIG = 111; 362 enum DSA_F_OLD_DSA_PRIV_DECODE = 122; 363 enum DSA_F_PKEY_DSA_CTRL = 120; 364 enum DSA_F_PKEY_DSA_KEYGEN = 121; 365 enum DSA_F_SIG_CB = 114; 366 367 /* Reason codes. */ 368 enum DSA_R_BAD_Q_VALUE = 102; 369 enum DSA_R_BN_DECODE_ERROR = 108; 370 enum DSA_R_BN_ERROR = 109; 371 enum DSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE = 100; 372 enum DSA_R_DECODE_ERROR = 104; 373 enum DSA_R_INVALID_DIGEST_TYPE = 106; 374 enum DSA_R_MISSING_PARAMETERS = 101; 375 enum DSA_R_MODULUS_TOO_LARGE = 103; 376 enum DSA_R_NEED_NEW_SETUP_VALUES = 110; 377 enum DSA_R_NON_FIPS_DSA_METHOD = 111; 378 enum DSA_R_NO_PARAMETERS_SET = 107; 379 enum DSA_R_PARAMETER_ENCODING_ERROR = 105;