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author | cvs2svn <admin@example.com> | 2025-04-14 17:32:06 +0000 |
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committer | cvs2svn <admin@example.com> | 2025-04-14 17:32:06 +0000 |
commit | eb8dd9dca1228af0cd132f515509051ecfabf6f6 (patch) | |
tree | edb6da6af7e865d488dc1a29309f1e1ec226e603 /src/lib/libcrypto/man/DSA_sign.3 | |
parent | 247f0352e0ed72a4f476db9dc91f4d982bc83eb2 (diff) | |
download | openbsd-tb_20250414.tar.gz openbsd-tb_20250414.tar.bz2 openbsd-tb_20250414.zip |
This commit was manufactured by cvs2git to create tag 'tb_20250414'.tb_20250414
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-rw-r--r-- | src/lib/libcrypto/man/DSA_sign.3 | 173 |
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diff --git a/src/lib/libcrypto/man/DSA_sign.3 b/src/lib/libcrypto/man/DSA_sign.3 deleted file mode 100644 index 59f9042ba6..0000000000 --- a/src/lib/libcrypto/man/DSA_sign.3 +++ /dev/null | |||
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1 | .\" $OpenBSD: DSA_sign.3,v 1.10 2019/06/10 14:58:48 schwarze Exp $ | ||
2 | .\" OpenSSL b97fdb57 Nov 11 09:33:09 2016 +0100 | ||
3 | .\" | ||
4 | .\" This file was written by Ulf Moeller <ulf@openssl.org>. | ||
5 | .\" Copyright (c) 2000 The OpenSSL Project. All rights reserved. | ||
6 | .\" | ||
7 | .\" Redistribution and use in source and binary forms, with or without | ||
8 | .\" modification, are permitted provided that the following conditions | ||
9 | .\" are met: | ||
10 | .\" | ||
11 | .\" 1. Redistributions of source code must retain the above copyright | ||
12 | .\" notice, this list of conditions and the following disclaimer. | ||
13 | .\" | ||
14 | .\" 2. Redistributions in binary form must reproduce the above copyright | ||
15 | .\" notice, this list of conditions and the following disclaimer in | ||
16 | .\" the documentation and/or other materials provided with the | ||
17 | .\" distribution. | ||
18 | .\" | ||
19 | .\" 3. All advertising materials mentioning features or use of this | ||
20 | .\" software must display the following acknowledgment: | ||
21 | .\" "This product includes software developed by the OpenSSL Project | ||
22 | .\" for use in the OpenSSL Toolkit. (http://www.openssl.org/)" | ||
23 | .\" | ||
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27 | .\" openssl-core@openssl.org. | ||
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29 | .\" 5. Products derived from this software may not be called "OpenSSL" | ||
30 | .\" nor may "OpenSSL" appear in their names without prior written | ||
31 | .\" permission of the OpenSSL Project. | ||
32 | .\" | ||
33 | .\" 6. Redistributions of any form whatsoever must retain the following | ||
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49 | .\" OF THE POSSIBILITY OF SUCH DAMAGE. | ||
50 | .\" | ||
51 | .Dd $Mdocdate: June 10 2019 $ | ||
52 | .Dt DSA_SIGN 3 | ||
53 | .Os | ||
54 | .Sh NAME | ||
55 | .Nm DSA_sign , | ||
56 | .Nm DSA_sign_setup , | ||
57 | .Nm DSA_verify | ||
58 | .Nd DSA signatures | ||
59 | .Sh SYNOPSIS | ||
60 | .In openssl/dsa.h | ||
61 | .Ft int | ||
62 | .Fo DSA_sign | ||
63 | .Fa "int type" | ||
64 | .Fa "const unsigned char *dgst" | ||
65 | .Fa "int len" | ||
66 | .Fa "unsigned char *sigret" | ||
67 | .Fa "unsigned int *siglen" | ||
68 | .Fa "DSA *dsa" | ||
69 | .Fc | ||
70 | .Ft int | ||
71 | .Fo DSA_sign_setup | ||
72 | .Fa "DSA *dsa" | ||
73 | .Fa "BN_CTX *ctx" | ||
74 | .Fa "BIGNUM **kinvp" | ||
75 | .Fa "BIGNUM **rp" | ||
76 | .Fc | ||
77 | .Ft int | ||
78 | .Fo DSA_verify | ||
79 | .Fa "int type" | ||
80 | .Fa "const unsigned char *dgst" | ||
81 | .Fa "int len" | ||
82 | .Fa "unsigned char *sigbuf" | ||
83 | .Fa "int siglen" | ||
84 | .Fa "DSA *dsa" | ||
85 | .Fc | ||
86 | .Sh DESCRIPTION | ||
87 | .Fn DSA_sign | ||
88 | computes a digital signature on the | ||
89 | .Fa len | ||
90 | byte message digest | ||
91 | .Fa dgst | ||
92 | using the private key | ||
93 | .Fa dsa | ||
94 | and places its ASN.1 DER encoding at | ||
95 | .Fa sigret . | ||
96 | The length of the signature is placed in | ||
97 | .Pf * Fa siglen . | ||
98 | .Fa sigret | ||
99 | must point to | ||
100 | .Fn DSA_size dsa | ||
101 | bytes of memory. | ||
102 | .Pp | ||
103 | .Fn DSA_sign_setup | ||
104 | may be used to precompute part of the signing operation in case | ||
105 | signature generation is time-critical. | ||
106 | It expects | ||
107 | .Fa dsa | ||
108 | to contain DSA parameters. | ||
109 | It places the precomputed values in newly allocated | ||
110 | .Vt BIGNUM Ns s | ||
111 | at | ||
112 | .Pf * Fa kinvp | ||
113 | and | ||
114 | .Pf * Fa rp , | ||
115 | after freeing the old ones unless | ||
116 | .Fa kinvp | ||
117 | and | ||
118 | .Fa rp | ||
119 | are | ||
120 | .Dv NULL . | ||
121 | These values may be passed to | ||
122 | .Fn DSA_sign | ||
123 | in | ||
124 | .Fa dsa->kinv | ||
125 | and | ||
126 | .Sy dsa->r . | ||
127 | .Fa ctx | ||
128 | is a pre-allocated | ||
129 | .Vt BN_CTX | ||
130 | or | ||
131 | .Dv NULL . | ||
132 | .Pp | ||
133 | .Fn DSA_verify | ||
134 | verifies that the signature | ||
135 | .Fa sigbuf | ||
136 | of size | ||
137 | .Fa siglen | ||
138 | matches a given message digest | ||
139 | .Fa dgst | ||
140 | of size | ||
141 | .Fa len . | ||
142 | .Fa dsa | ||
143 | is the signer's public key. | ||
144 | .Pp | ||
145 | The | ||
146 | .Fa type | ||
147 | parameter is ignored. | ||
148 | .Sh RETURN VALUES | ||
149 | .Fn DSA_sign | ||
150 | and | ||
151 | .Fn DSA_sign_setup | ||
152 | return 1 on success or 0 on error. | ||
153 | .Fn DSA_verify | ||
154 | returns 1 for a valid signature, 0 for an incorrect signature, | ||
155 | and -1 on error. | ||
156 | The error codes can be obtained by | ||
157 | .Xr ERR_get_error 3 . | ||
158 | .Sh SEE ALSO | ||
159 | .Xr DSA_do_sign 3 , | ||
160 | .Xr DSA_get0_key 3 , | ||
161 | .Xr DSA_new 3 | ||
162 | .Sh STANDARDS | ||
163 | US Federal Information Processing Standard FIPS 186 (Digital Signature | ||
164 | Standard, DSS), ANSI X9.30 | ||
165 | .Sh HISTORY | ||
166 | .Fn DSA_sign | ||
167 | and | ||
168 | .Fn DSA_verify | ||
169 | first appeared in SSLeay 0.6.0. | ||
170 | .Fn DSA_sign_setup | ||
171 | first appeared in SSLeay 0.8.0. | ||
172 | All these functions have been available since | ||
173 | .Ox 2.4 . | ||