.rn '' }`
''' $RCSfile$$Revision$$Date$
'''
''' $Log$
'''
.de Sh
.br
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.ne 5
.PP
\fB\\$1\fR
.PP
..
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.IP "\\$1" \\$2
..
.de Vb
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.nf
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..
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.ft R

.fi
..
'''
'''
'''     Set up \*(-- to give an unbreakable dash;
'''     string Tr holds user defined translation string.
'''     Bell System Logo is used as a dummy character.
'''
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.ie n \{\
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'''   \*(M", \*(S", \*(N" and \*(T" are the equivalent of
'''   \*(L" and \*(R", except that they are used on ".xx" lines,
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.\"	If the F register is turned on, we'll generate
.\"	index entries out stderr for the following things:
.\"		TH	Title 
.\"		SH	Header
.\"		Sh	Subsection 
.\"		Ip	Item
.\"		X<>	Xref  (embedded
.\"	Of course, you have to process the output yourself
.\"	in some meaninful fashion.
.if \nF \{
.de IX
.tm Index:\\$1\t\\n%\t"\\$2"
..
.nr % 0
.rr F
.\}
.TH crypto 3 "0.9.7d" "2/Sep/2004" "OpenSSL"
.UC
.if n .hy 0
.if n .na
.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p'
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'if n "\c
'if t \\&\\$1\c
'if n \\&\\$1\c
'if n \&"
\\&\\$2 \\$3 \\$4 \\$5 \\$6 \\$7
'.ft R
..
.\" @(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2
.	\" AM - accent mark definitions
.bd B 3
.	\" fudge factors for nroff and troff
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.if t \{\
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.	\" simple accents for nroff and troff
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.	ds ' \&
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.ds Oe O\h'-(\w'O'u*4/10)'E
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.rm #[ #] #H #V #F C
.SH "NAME"
crypto \- OpenSSL cryptographic library
.SH "SYNOPSIS"
.SH "DESCRIPTION"
The OpenSSL \fBcrypto\fR library implements a wide range of cryptographic
algorithms used in various Internet standards. The services provided
by this library are used by the OpenSSL implementations of SSL, TLS
and S/MIME, and they have also been used to implement SSH, OpenPGP, and
other cryptographic standards.
.SH "OVERVIEW"
\fBlibcrypto\fR consists of a number of sub-libraries that implement the
individual algorithms.
.PP
The functionality includes symmetric encryption, public key
cryptography and key agreement, certificate handling, cryptographic
hash functions and a cryptographic pseudo-random number generator.
.Ip "\s-1SYMMETRIC\s0 \s-1CIPHERS\s0" 4
blowfish(3), cast(3), des(3),
idea(3), rc2(3), rc4(3), rc5(3) 
.Ip "\s-1PUBLIC\s0 \s-1KEY\s0 \s-1CRYPTOGRAPHY\s0 \s-1AND\s0 \s-1KEY\s0 \s-1AGREEMENT\s0" 4
dsa(3), dh(3), rsa(3)
.Ip "\s-1CERTIFICATES\s0" 4
x509(3), x509v3(3)
.Ip "\s-1AUTHENTICATION\s0 \s-1CODES\s0, \s-1HASH\s0 \s-1FUNCTIONS\s0" 4
hmac(3), md2(3), md4(3),
md5(3), mdc2(3), ripemd(3),
sha(3)
.Ip "\s-1AUXILIARY\s0 \s-1FUNCTIONS\s0" 4
err(3), threads(3), rand(3),
\s-1OPENSSL_VERSION_NUMBER\s0(3)
.Ip "\s-1INPUT/OUTPUT\s0, \s-1DATA\s0 \s-1ENCODING\s0" 4
asn1(3), bio(3), evp(3), pem(3),
pkcs7(3), pkcs12(3) 
.Ip "\s-1INTERNAL\s0 \s-1FUNCTIONS\s0" 4
bn(3), buffer(3), lhash(3),
objects(3), stack(3),
txt_db(3) 
.SH "NOTES"
Some of the newer functions follow a naming convention using the numbers
\fB0\fR and \fB1\fR. For example the functions:
.PP
.Vb 2
\& int X509_CRL_add0_revoked(X509_CRL *crl, X509_REVOKED *rev);
\& int X509_add1_trust_object(X509 *x, ASN1_OBJECT *obj);
.Ve
The \fB0\fR version uses the supplied structure pointer directly
in the parent and it will be freed up when the parent is freed.
In the above example \fBcrl\fR would be freed but \fBrev\fR would not.
.PP
The \fB1\fR function uses a copy of the supplied structure pointer
(or in some cases increases its link count) in the parent and
so both (\fBx\fR and \fBobj\fR above) should be freed up.
.SH "SEE ALSO"
openssl(1), ssl(3)

.rn }` ''
.IX Title "crypto 3"
.IX Name "crypto - OpenSSL cryptographic library"

.IX Header "NAME"

.IX Header "SYNOPSIS"

.IX Header "DESCRIPTION"

.IX Header "OVERVIEW"

.IX Item "\s-1SYMMETRIC\s0 \s-1CIPHERS\s0"

.IX Item "\s-1PUBLIC\s0 \s-1KEY\s0 \s-1CRYPTOGRAPHY\s0 \s-1AND\s0 \s-1KEY\s0 \s-1AGREEMENT\s0"

.IX Item "\s-1CERTIFICATES\s0"

.IX Item "\s-1AUTHENTICATION\s0 \s-1CODES\s0, \s-1HASH\s0 \s-1FUNCTIONS\s0"

.IX Item "\s-1AUXILIARY\s0 \s-1FUNCTIONS\s0"

.IX Item "\s-1INPUT/OUTPUT\s0, \s-1DATA\s0 \s-1ENCODING\s0"

.IX Item "\s-1INTERNAL\s0 \s-1FUNCTIONS\s0"

.IX Header "NOTES"

.IX Header "SEE ALSO"