Switch from OpenSSL 0.9.7d to 0.9.7e.
[dragonfly.git] / secure / lib / libcrypto / man / evp.3
CommitLineData
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1.rn '' }`
2''' $RCSfile$$Revision$$Date$
3'''
4''' $Log$
5'''
6.de Sh
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7.br
8.if t .Sp
9.ne 5
10.PP
11\fB\\$1\fR
12.PP
13..
74dab6c2 14.de Sp
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15.if t .sp .5v
16.if n .sp
17..
74dab6c2 18.de Ip
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19.br
20.ie \\n(.$>=3 .ne \\$3
21.el .ne 3
22.IP "\\$1" \\$2
23..
74dab6c2 24.de Vb
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25.ft CW
26.nf
27.ne \\$1
28..
74dab6c2 29.de Ve
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30.ft R
31
32.fi
33..
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34'''
35'''
36''' Set up \*(-- to give an unbreakable dash;
37''' string Tr holds user defined translation string.
38''' Bell System Logo is used as a dummy character.
39'''
984263bc 40.tr \(*W-|\(bv\*(Tr
984263bc 41.ie n \{\
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42.ds -- \(*W-
43.ds PI pi
44.if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch
45.if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch
46.ds L" ""
47.ds R" ""
48''' \*(M", \*(S", \*(N" and \*(T" are the equivalent of
49''' \*(L" and \*(R", except that they are used on ".xx" lines,
50''' such as .IP and .SH, which do another additional levels of
51''' double-quote interpretation
52.ds M" """
53.ds S" """
54.ds N" """""
55.ds T" """""
56.ds L' '
57.ds R' '
58.ds M' '
59.ds S' '
60.ds N' '
61.ds T' '
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62'br\}
63.el\{\
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64.ds -- \(em\|
65.tr \*(Tr
66.ds L" ``
67.ds R" ''
68.ds M" ``
69.ds S" ''
70.ds N" ``
71.ds T" ''
72.ds L' `
73.ds R' '
74.ds M' `
75.ds S' '
76.ds N' `
77.ds T' '
78.ds PI \(*p
984263bc 79'br\}
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80.\" If the F register is turned on, we'll generate
81.\" index entries out stderr for the following things:
82.\" TH Title
83.\" SH Header
84.\" Sh Subsection
85.\" Ip Item
86.\" X<> Xref (embedded
87.\" Of course, you have to process the output yourself
88.\" in some meaninful fashion.
89.if \nF \{
90.de IX
91.tm Index:\\$1\t\\n%\t"\\$2"
984263bc 92..
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93.nr % 0
94.rr F
984263bc 95.\}
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96.TH evp 3 "0.9.7d" "2/Sep/2004" "OpenSSL"
97.UC
98.if n .hy 0
984263bc 99.if n .na
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100.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p'
101.de CQ \" put $1 in typewriter font
102.ft CW
103'if n "\c
104'if t \\&\\$1\c
105'if n \\&\\$1\c
106'if n \&"
107\\&\\$2 \\$3 \\$4 \\$5 \\$6 \\$7
108'.ft R
109..
110.\" @(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2
111. \" AM - accent mark definitions
984263bc 112.bd B 3
74dab6c2 113. \" fudge factors for nroff and troff
984263bc 114.if n \{\
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115. ds #H 0
116. ds #V .8m
117. ds #F .3m
118. ds #[ \f1
119. ds #] \fP
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120.\}
121.if t \{\
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122. ds #H ((1u-(\\\\n(.fu%2u))*.13m)
123. ds #V .6m
124. ds #F 0
125. ds #[ \&
126. ds #] \&
984263bc 127.\}
74dab6c2 128. \" simple accents for nroff and troff
984263bc 129.if n \{\
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130. ds ' \&
131. ds ` \&
132. ds ^ \&
133. ds , \&
134. ds ~ ~
135. ds ? ?
136. ds ! !
137. ds /
138. ds q
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139.\}
140.if t \{\
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141. ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u"
142. ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u'
143. ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u'
144. ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u'
145. ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u'
146. ds ? \s-2c\h'-\w'c'u*7/10'\u\h'\*(#H'\zi\d\s+2\h'\w'c'u*8/10'
147. ds ! \s-2\(or\s+2\h'-\w'\(or'u'\v'-.8m'.\v'.8m'
148. ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u'
149. ds q o\h'-\w'o'u*8/10'\s-4\v'.4m'\z\(*i\v'-.4m'\s+4\h'\w'o'u*8/10'
984263bc 150.\}
74dab6c2 151. \" troff and (daisy-wheel) nroff accents
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152.ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V'
153.ds 8 \h'\*(#H'\(*b\h'-\*(#H'
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154.ds v \\k:\h'-(\\n(.wu*9/10-\*(#H)'\v'-\*(#V'\*(#[\s-4v\s0\v'\*(#V'\h'|\\n:u'\*(#]
155.ds _ \\k:\h'-(\\n(.wu*9/10-\*(#H+(\*(#F*2/3))'\v'-.4m'\z\(hy\v'.4m'\h'|\\n:u'
156.ds . \\k:\h'-(\\n(.wu*8/10)'\v'\*(#V*4/10'\z.\v'-\*(#V*4/10'\h'|\\n:u'
157.ds 3 \*(#[\v'.2m'\s-2\&3\s0\v'-.2m'\*(#]
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158.ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#]
159.ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H'
160.ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u'
161.ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#]
162.ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#]
163.ds ae a\h'-(\w'a'u*4/10)'e
164.ds Ae A\h'-(\w'A'u*4/10)'E
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165.ds oe o\h'-(\w'o'u*4/10)'e
166.ds Oe O\h'-(\w'O'u*4/10)'E
167. \" corrections for vroff
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168.if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u'
169.if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u'
74dab6c2 170. \" for low resolution devices (crt and lpr)
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171.if \n(.H>23 .if \n(.V>19 \
172\{\
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173. ds : e
174. ds 8 ss
175. ds v \h'-1'\o'\(aa\(ga'
176. ds _ \h'-1'^
177. ds . \h'-1'.
178. ds 3 3
179. ds o a
180. ds d- d\h'-1'\(ga
181. ds D- D\h'-1'\(hy
182. ds th \o'bp'
183. ds Th \o'LP'
184. ds ae ae
185. ds Ae AE
186. ds oe oe
187. ds Oe OE
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188.\}
189.rm #[ #] #H #V #F C
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190.SH "NAME"
191evp \- high-level cryptographic functions
192.SH "SYNOPSIS"
74dab6c2 193.PP
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194.Vb 1
195\& #include <openssl/evp.h>
196.Ve
197.SH "DESCRIPTION"
74dab6c2 198The EVP library provides a high-level interface to cryptographic
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199functions.
200.PP
74dab6c2 201\fBEVP_Seal\fR\fI...\fR and \fBEVP_Open\fR\fI...\fR provide public key encryption
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202and decryption to implement digital \*(L"envelopes\*(R".
203.PP
204The \fBEVP_Sign\fR\fI...\fR and \fBEVP_Verify\fR\fI...\fR functions implement
205digital signatures.
206.PP
207Symmetric encryption is available with the \fBEVP_Encrypt\fR\fI...\fR
208functions. The \fBEVP_Digest\fR\fI...\fR functions provide message digests.
209.PP
210Algorithms are loaded with \fIOpenSSL_add_all_algorithms\fR\|(3).
211.PP
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212All the symmetric algorithms (ciphers) and digests can be replaced by ENGINE
213modules providing alternative implementations. If ENGINE implementations of
214ciphers or digests are registered as defaults, then the various EVP functions
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215will automatically use those implementations automatically in preference to
216built in software implementations. For more information, consult the \fIengine\fR\|(3)
217man page.
218.SH "SEE ALSO"
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219EVP_DigestInit(3),
220EVP_EncryptInit(3),
221EVP_OpenInit(3),
222EVP_SealInit(3),
223EVP_SignInit(3),
224EVP_VerifyInit(3),
225OpenSSL_add_all_algorithms(3),
226engine(3)
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227
228.rn }` ''
229.IX Title "evp 3"
230.IX Name "evp - high-level cryptographic functions"
231
232.IX Header "NAME"
233
234.IX Header "SYNOPSIS"
235
236.IX Header "DESCRIPTION"
237
238.IX Header "SEE ALSO"
239