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d02b48c6 | 1 | /* crypto/dsa/dsa.h */ |
58964a49 | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
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 | #ifdef __cplusplus | |
69 | extern "C" { | |
70 | #endif | |
71 | ||
f5d7a031 UM |
72 | #ifdef NO_DSA |
73 | #error DSA is disabled. | |
74 | #endif | |
75 | ||
ec577822 | 76 | #include <openssl/bn.h> |
c0711f7f | 77 | #include <openssl/crypto.h> |
48c843c3 BM |
78 | #ifndef NO_DH |
79 | # include <openssl/dh.h> | |
80 | #endif | |
d02b48c6 | 81 | |
dfeab068 RE |
82 | #define DSA_FLAG_CACHE_MONT_P 0x01 |
83 | ||
c0711f7f DSH |
84 | typedef struct dsa_st DSA; |
85 | ||
86 | typedef struct DSA_SIG_st | |
87 | { | |
88 | BIGNUM *r; | |
89 | BIGNUM *s; | |
90 | } DSA_SIG; | |
91 | ||
92 | typedef struct dsa_method { | |
93 | const char *name; | |
94 | DSA_SIG * (*dsa_do_sign)(const unsigned char *dgst, int dlen, DSA *dsa); | |
95 | int (*dsa_sign_setup)(DSA *dsa, BN_CTX *ctx_in, BIGNUM **kinvp, | |
96 | BIGNUM **rp); | |
97 | int (*dsa_do_verify)(const unsigned char *dgst, int dgst_len, | |
98 | DSA_SIG *sig, DSA *dsa); | |
99 | int (*dsa_mod_exp)(DSA *dsa, BIGNUM *rr, BIGNUM *a1, BIGNUM *p1, | |
100 | BIGNUM *a2, BIGNUM *p2, BIGNUM *m, BN_CTX *ctx, | |
101 | BN_MONT_CTX *in_mont); | |
102 | int (*bn_mod_exp)(DSA *dsa, BIGNUM *r, BIGNUM *a, const BIGNUM *p, | |
103 | const BIGNUM *m, BN_CTX *ctx, | |
104 | BN_MONT_CTX *m_ctx); /* Can be null */ | |
105 | int (*init)(DSA *dsa); | |
106 | int (*finish)(DSA *dsa); | |
107 | int flags; | |
108 | char *app_data; | |
109 | } DSA_METHOD; | |
110 | ||
111 | struct dsa_st | |
d02b48c6 RE |
112 | { |
113 | /* This first variable is used to pick up errors where | |
114 | * a DSA is passed instead of of a EVP_PKEY */ | |
115 | int pad; | |
116 | int version; | |
117 | int write_params; | |
118 | BIGNUM *p; | |
119 | BIGNUM *q; /* == 20 */ | |
120 | BIGNUM *g; | |
121 | ||
122 | BIGNUM *pub_key; /* y public key */ | |
123 | BIGNUM *priv_key; /* x private key */ | |
124 | ||
125 | BIGNUM *kinv; /* Signing pre-calc */ | |
126 | BIGNUM *r; /* Signing pre-calc */ | |
127 | ||
dfeab068 RE |
128 | int flags; |
129 | /* Normally used to cache montgomery values */ | |
130 | char *method_mont_p; | |
d02b48c6 | 131 | int references; |
c0711f7f DSH |
132 | CRYPTO_EX_DATA ex_data; |
133 | DSA_METHOD *meth; | |
134 | }; | |
a8da8918 | 135 | |
d02b48c6 RE |
136 | #define DSAparams_dup(x) (DSA *)ASN1_dup((int (*)())i2d_DSAparams, \ |
137 | (char *(*)())d2i_DSAparams,(char *)(x)) | |
138 | #define d2i_DSAparams_fp(fp,x) (DSA *)ASN1_d2i_fp((char *(*)())DSA_new, \ | |
139 | (char *(*)())d2i_DSAparams,(fp),(unsigned char **)(x)) | |
140 | #define i2d_DSAparams_fp(fp,x) ASN1_i2d_fp(i2d_DSAparams,(fp), \ | |
141 | (unsigned char *)(x)) | |
142 | #define d2i_DSAparams_bio(bp,x) (DSA *)ASN1_d2i_bio((char *(*)())DSA_new, \ | |
143 | (char *(*)())d2i_DSAparams,(bp),(unsigned char **)(x)) | |
144 | #define i2d_DSAparams_bio(bp,x) ASN1_i2d_bio(i2d_DSAparams,(bp), \ | |
145 | (unsigned char *)(x)) | |
146 | ||
d02b48c6 | 147 | |
a8da8918 UM |
148 | DSA_SIG * DSA_SIG_new(void); |
149 | void DSA_SIG_free(DSA_SIG *a); | |
150 | int i2d_DSA_SIG(DSA_SIG *a, unsigned char **pp); | |
151 | DSA_SIG * d2i_DSA_SIG(DSA_SIG **v, unsigned char **pp, long length); | |
152 | ||
61f5b6f3 BL |
153 | DSA_SIG * DSA_do_sign(const unsigned char *dgst,int dlen,DSA *dsa); |
154 | int DSA_do_verify(const unsigned char *dgst,int dgst_len, | |
155 | DSA_SIG *sig,DSA *dsa); | |
a8da8918 | 156 | |
c0711f7f DSH |
157 | DSA_METHOD *DSA_OpenSSL(void); |
158 | ||
f8463356 RE |
159 | void DSA_set_default_method(DSA_METHOD *); |
160 | DSA_METHOD *DSA_get_default_method(void); | |
161 | DSA_METHOD *DSA_set_method(DSA *dsa, DSA_METHOD *); | |
162 | ||
d02b48c6 | 163 | DSA * DSA_new(void); |
c0711f7f | 164 | DSA * DSA_new_method(DSA_METHOD *meth); |
d02b48c6 | 165 | int DSA_size(DSA *); |
d02b48c6 RE |
166 | /* next 4 return -1 on error */ |
167 | int DSA_sign_setup( DSA *dsa,BN_CTX *ctx_in,BIGNUM **kinvp,BIGNUM **rp); | |
61f5b6f3 | 168 | int DSA_sign(int type,const unsigned char *dgst,int dlen, |
d02b48c6 | 169 | unsigned char *sig, unsigned int *siglen, DSA *dsa); |
61f5b6f3 | 170 | int DSA_verify(int type,const unsigned char *dgst,int dgst_len, |
d02b48c6 RE |
171 | unsigned char *sigbuf, int siglen, DSA *dsa); |
172 | void DSA_free (DSA *r); | |
c0711f7f DSH |
173 | int DSA_get_ex_new_index(long argl, char *argp, int (*new_func)(), |
174 | int (*dup_func)(), void (*free_func)()); | |
175 | int DSA_set_ex_data(DSA *d, int idx, char *arg); | |
176 | char *DSA_get_ex_data(DSA *d, int idx); | |
d02b48c6 RE |
177 | |
178 | void ERR_load_DSA_strings(void ); | |
179 | ||
180 | DSA * d2i_DSAPublicKey(DSA **a, unsigned char **pp, long length); | |
181 | DSA * d2i_DSAPrivateKey(DSA **a, unsigned char **pp, long length); | |
182 | DSA * d2i_DSAparams(DSA **a, unsigned char **pp, long length); | |
183 | DSA * DSA_generate_parameters(int bits, unsigned char *seed,int seed_len, | |
58964a49 RE |
184 | int *counter_ret, unsigned long *h_ret,void |
185 | (*callback)(),char *cb_arg); | |
d02b48c6 RE |
186 | int DSA_generate_key(DSA *a); |
187 | int i2d_DSAPublicKey(DSA *a, unsigned char **pp); | |
188 | int i2d_DSAPrivateKey(DSA *a, unsigned char **pp); | |
189 | int i2d_DSAparams(DSA *a,unsigned char **pp); | |
190 | ||
191 | #ifdef HEADER_BIO_H | |
192 | int DSAparams_print(BIO *bp, DSA *x); | |
193 | int DSA_print(BIO *bp, DSA *x, int off); | |
194 | #endif | |
58964a49 | 195 | #ifndef NO_FP_API |
d02b48c6 RE |
196 | int DSAparams_print_fp(FILE *fp, DSA *x); |
197 | int DSA_print_fp(FILE *bp, DSA *x, int off); | |
198 | #endif | |
199 | ||
58964a49 | 200 | int DSA_is_prime(BIGNUM *q,void (*callback)(),char *cb_arg); |
d02b48c6 | 201 | |
48c843c3 BM |
202 | #ifndef NO_DH |
203 | /* Convert DSA structure (key or just parameters) into DH structure | |
204 | * (be careful to avoid small subgroup attacks when using this!) */ | |
205 | DH *DSA_dup_DH(DSA *r); | |
206 | #endif | |
207 | ||
d02b48c6 | 208 | /* BEGIN ERROR CODES */ |
6d311938 DSH |
209 | /* The following lines are auto generated by the script mkerr.pl. Any changes |
210 | * made after this point may be overwritten when the script is next run. | |
211 | */ | |
212 | ||
d02b48c6 RE |
213 | /* Error codes for the DSA functions. */ |
214 | ||
215 | /* Function codes. */ | |
6d311938 | 216 | #define DSA_F_D2I_DSA_SIG 110 |
d02b48c6 RE |
217 | #define DSA_F_DSAPARAMS_PRINT 100 |
218 | #define DSA_F_DSAPARAMS_PRINT_FP 101 | |
6d311938 DSH |
219 | #define DSA_F_DSA_DO_SIGN 112 |
220 | #define DSA_F_DSA_DO_VERIFY 113 | |
d02b48c6 RE |
221 | #define DSA_F_DSA_IS_PRIME 102 |
222 | #define DSA_F_DSA_NEW 103 | |
223 | #define DSA_F_DSA_PRINT 104 | |
224 | #define DSA_F_DSA_PRINT_FP 105 | |
225 | #define DSA_F_DSA_SIGN 106 | |
226 | #define DSA_F_DSA_SIGN_SETUP 107 | |
a8da8918 | 227 | #define DSA_F_DSA_SIG_NEW 109 |
6d311938 | 228 | #define DSA_F_DSA_VERIFY 108 |
a8da8918 | 229 | #define DSA_F_I2D_DSA_SIG 111 |
d02b48c6 RE |
230 | |
231 | /* Reason codes. */ | |
232 | #define DSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE 100 | |
6d311938 | 233 | |
d02b48c6 RE |
234 | #ifdef __cplusplus |
235 | } | |
236 | #endif | |
237 | #endif | |
238 |