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author | beck <> | 2000-03-19 11:13:58 +0000 |
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committer | beck <> | 2000-03-19 11:13:58 +0000 |
commit | 796d609550df3a33fc11468741c5d2f6d3df4c11 (patch) | |
tree | 6c6d539061caa20372dad0ac4ddb1dfae2fbe7fe /src/lib/libcrypto/doc/DSA_set_method.pod | |
parent | 5be3114c1fd7e0dfea1e38d3abb4cbba75244419 (diff) | |
download | openbsd-796d609550df3a33fc11468741c5d2f6d3df4c11.tar.gz openbsd-796d609550df3a33fc11468741c5d2f6d3df4c11.tar.bz2 openbsd-796d609550df3a33fc11468741c5d2f6d3df4c11.zip |
OpenSSL 0.9.5 merge
*warning* this bumps shared lib minors for libssl and libcrypto from 2.1 to 2.2
if you are using the ssl26 packages for ssh and other things to work you will
need to get new ones (see ~beck/libsslsnap/<arch>) on cvs or ~beck/src-patent.tar.gz on cvs
Diffstat (limited to 'src/lib/libcrypto/doc/DSA_set_method.pod')
-rw-r--r-- | src/lib/libcrypto/doc/DSA_set_method.pod | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/src/lib/libcrypto/doc/DSA_set_method.pod b/src/lib/libcrypto/doc/DSA_set_method.pod new file mode 100644 index 0000000000..0b13ec9237 --- /dev/null +++ b/src/lib/libcrypto/doc/DSA_set_method.pod | |||
@@ -0,0 +1,111 @@ | |||
1 | =pod | ||
2 | |||
3 | =head1 NAME | ||
4 | |||
5 | DSA_set_default_method, DSA_get_default_method, DSA_set_method, | ||
6 | DSA_new_method, DSA_OpenSSL - select RSA method | ||
7 | |||
8 | =head1 SYNOPSIS | ||
9 | |||
10 | #include <openssl/DSA.h> | ||
11 | |||
12 | void DSA_set_default_method(DSA_METHOD *meth); | ||
13 | |||
14 | DSA_METHOD *DSA_get_default_method(void); | ||
15 | |||
16 | DSA_METHOD *DSA_set_method(DSA *dsa, DSA_METHOD *meth); | ||
17 | |||
18 | DSA *DSA_new_method(DSA_METHOD *meth); | ||
19 | |||
20 | DSA_METHOD *DSA_OpenSSL(void); | ||
21 | |||
22 | =head1 DESCRIPTION | ||
23 | |||
24 | A B<DSA_METHOD> specifies the functions that OpenSSL uses for DSA | ||
25 | operations. By modifying the method, alternative implementations | ||
26 | such as hardware accelerators may be used. | ||
27 | |||
28 | Initially, the default is to use the OpenSSL internal implementation. | ||
29 | DSA_OpenSSL() returns a pointer to that method. | ||
30 | |||
31 | DSA_set_default_method() makes B<meth> the default method for all B<DSA> | ||
32 | structures created later. | ||
33 | |||
34 | DSA_get_default_method() returns a pointer to the current default | ||
35 | method. | ||
36 | |||
37 | DSA_set_method() selects B<meth> for all operations using the structure B<DSA>. | ||
38 | |||
39 | DSA_get_method() returns a pointer to the method currently selected | ||
40 | for B<DSA>. | ||
41 | |||
42 | DSA_new_method() allocates and initializes a B<DSA> structure so that | ||
43 | B<method> will be used for the DSA operations. If B<method> is B<NULL>, | ||
44 | the default method is used. | ||
45 | |||
46 | =head1 THE DSA_METHOD STRUCTURE | ||
47 | |||
48 | struct | ||
49 | { | ||
50 | /* name of the implementation */ | ||
51 | const char *name; | ||
52 | |||
53 | /* sign */ | ||
54 | DSA_SIG *(*dsa_do_sign)(const unsigned char *dgst, int dlen, | ||
55 | DSA *dsa); | ||
56 | |||
57 | /* pre-compute k^-1 and r */ | ||
58 | int (*dsa_sign_setup)(DSA *dsa, BN_CTX *ctx_in, BIGNUM **kinvp, | ||
59 | BIGNUM **rp); | ||
60 | |||
61 | /* verify */ | ||
62 | int (*dsa_do_verify)(const unsigned char *dgst, int dgst_len, | ||
63 | DSA_SIG *sig, DSA *dsa); | ||
64 | |||
65 | /* compute rr = a1^p1 * a2^p2 mod m. May be NULL */ | ||
66 | int (*dsa_mod_exp)(DSA *dsa, BIGNUM *rr, BIGNUM *a1, BIGNUM *p1, | ||
67 | BIGNUM *a2, BIGNUM *p2, BIGNUM *m, | ||
68 | BN_CTX *ctx, BN_MONT_CTX *in_mont); | ||
69 | |||
70 | /* compute r = a ^ p mod m. May be NULL */ | ||
71 | int (*bn_mod_exp)(DSA *dsa, BIGNUM *r, BIGNUM *a, | ||
72 | const BIGNUM *p, const BIGNUM *m, | ||
73 | BN_CTX *ctx, BN_MONT_CTX *m_ctx); | ||
74 | |||
75 | /* called at DSA_new */ | ||
76 | int (*init)(DSA *DSA); | ||
77 | |||
78 | /* called at DSA_free */ | ||
79 | int (*finish)(DSA *DSA); | ||
80 | |||
81 | int flags; | ||
82 | |||
83 | char *app_data; /* ?? */ | ||
84 | |||
85 | } DSA_METHOD; | ||
86 | |||
87 | =head1 RETURN VALUES | ||
88 | |||
89 | DSA_OpenSSL(), DSA_get_default_method() and DSA_get_method() return | ||
90 | pointers to the respective B<DSA_METHOD>s. | ||
91 | |||
92 | DSA_set_default_method() returns no value. | ||
93 | |||
94 | DSA_set_method() returns a pointer to the B<DSA_METHOD> previously | ||
95 | associated with B<dsa>. | ||
96 | |||
97 | DSA_new_method() returns B<NULL> and sets an error code that can be | ||
98 | obtained by L<ERR_get_error(3)|ERR_get_error(3)> if the allocation | ||
99 | fails. Otherwise it returns a pointer to the newly allocated | ||
100 | structure. | ||
101 | |||
102 | =head1 SEE ALSO | ||
103 | |||
104 | L<dsa(3)|dsa(3)>, L<DSA_new(3)|DSA_new(3)> | ||
105 | |||
106 | =head1 HISTORY | ||
107 | |||
108 | DSA_set_default_method(), DSA_get_default_method(), DSA_set_method(), | ||
109 | DSA_new_method() and DSA_OpenSSL() were added in OpenSSL 0.9.4. | ||
110 | |||
111 | =cut | ||