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0aeddcfa MC |
1 | /* |
2 | * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved. | |
3 | * | |
aa6bb135 RS |
4 | * Licensed under the OpenSSL license (the "License"). You may not use |
5 | * this file except in compliance with the License. You can obtain a copy | |
6 | * in the file LICENSE in the source distribution or at | |
0aeddcfa | 7 | * https://www.openssl.org/source/license.html |
0aeddcfa MC |
8 | */ |
9 | ||
10 | #include <openssl/dh.h> | |
11 | ||
12 | struct dh_st { | |
13 | /* | |
14 | * This first argument is used to pick up errors when a DH is passed | |
15 | * instead of a EVP_PKEY | |
16 | */ | |
17 | int pad; | |
18 | int version; | |
19 | BIGNUM *p; | |
20 | BIGNUM *g; | |
21 | long length; /* optional */ | |
22 | BIGNUM *pub_key; /* g^x % p */ | |
23 | BIGNUM *priv_key; /* x */ | |
24 | int flags; | |
25 | BN_MONT_CTX *method_mont_p; | |
26 | /* Place holders if we want to do X9.42 DH */ | |
27 | BIGNUM *q; | |
28 | BIGNUM *j; | |
29 | unsigned char *seed; | |
30 | int seedlen; | |
31 | BIGNUM *counter; | |
32 | int references; | |
33 | CRYPTO_EX_DATA ex_data; | |
34 | const DH_METHOD *meth; | |
35 | ENGINE *engine; | |
36 | CRYPTO_RWLOCK *lock; | |
37 | }; | |
17e01abb MC |
38 | |
39 | struct dh_method { | |
40 | char *name; | |
41 | /* Methods here */ | |
42 | int (*generate_key) (DH *dh); | |
43 | int (*compute_key) (unsigned char *key, const BIGNUM *pub_key, DH *dh); | |
0263b992 | 44 | |
17e01abb MC |
45 | /* Can be null */ |
46 | int (*bn_mod_exp) (const DH *dh, BIGNUM *r, const BIGNUM *a, | |
47 | const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx, | |
48 | BN_MONT_CTX *m_ctx); | |
49 | int (*init) (DH *dh); | |
50 | int (*finish) (DH *dh); | |
51 | int flags; | |
52 | char *app_data; | |
53 | /* If this is non-NULL, it will be used to generate parameters */ | |
54 | int (*generate_params) (DH *dh, int prime_len, int generator, | |
55 | BN_GENCB *cb); | |
56 | }; |