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