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Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" crypto \- OpenSSL cryptographic library .SH "SYNOPSIS" .IX Header "SYNOPSIS" .SH "DESCRIPTION" .IX Header "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 \s-1SSL, TLS\s0 and S/MIME, and they have also been used to implement \s-1SSH,\s0 OpenPGP, and other cryptographic standards. .SH "OVERVIEW" .IX Header "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 CIPHERS\s0" 4 .IX Item "SYMMETRIC CIPHERS" \&\fBblowfish\fR\|(3), \fBcast\fR\|(3), \fBdes\fR\|(3), \&\fBidea\fR\|(3), \fBrc2\fR\|(3), \fBrc4\fR\|(3), \fBrc5\fR\|(3) .IP "\s-1PUBLIC KEY CRYPTOGRAPHY AND KEY AGREEMENT\s0" 4 .IX Item "PUBLIC KEY CRYPTOGRAPHY AND KEY AGREEMENT" \&\fBdsa\fR\|(3), \fBdh\fR\|(3), \fBrsa\fR\|(3) .IP "\s-1CERTIFICATES\s0" 4 .IX Item "CERTIFICATES" \&\fBx509\fR\|(3), \fBx509v3\fR\|(3) .IP "\s-1AUTHENTICATION CODES, HASH FUNCTIONS\s0" 4 .IX Item "AUTHENTICATION CODES, HASH FUNCTIONS" \&\fBhmac\fR\|(3), \fBmd2\fR\|(3), \fBmd4\fR\|(3), \&\fBmd5\fR\|(3), \fBmdc2\fR\|(3), \fBripemd\fR\|(3), \&\fBsha\fR\|(3) .IP "\s-1AUXILIARY FUNCTIONS\s0" 4 .IX Item "AUXILIARY FUNCTIONS" \&\fBerr\fR\|(3), \fBthreads\fR\|(3), \fBrand\fR\|(3), \&\s-1\fBOPENSSL_VERSION_NUMBER\s0\fR\|(3) .IP "\s-1INPUT/OUTPUT, DATA ENCODING\s0" 4 .IX Item "INPUT/OUTPUT, DATA ENCODING" \&\fBasn1\fR\|(3), \fBbio\fR\|(3), \fBevp\fR\|(3), \fBpem\fR\|(3), \&\fBpkcs7\fR\|(3), \fBpkcs12\fR\|(3) .IP "\s-1INTERNAL FUNCTIONS\s0" 4 .IX Item "INTERNAL FUNCTIONS" \&\fBbn\fR\|(3), \fBbuffer\fR\|(3), \fBec\fR\|(3), \fBlhash\fR\|(3), \&\fBobjects\fR\|(3), \fBstack\fR\|(3), \&\fBtxt_db\fR\|(3) .\" Oracle has added the ARC stability level to this manual page .SH ATTRIBUTES See .BR attributes (7) for descriptions of the following attributes: .sp .TS box; cbp-1 | cbp-1 l | l . ATTRIBUTE TYPE ATTRIBUTE VALUE = Availability library/security/openssl = Stability Pass-through uncommitted .TE .PP .SH "NOTES" .IX Header "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 .PP 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. .\" Oracle has added source availability information to this manual page Source code for open source software components in Oracle Solaris can be found at https://www.oracle.com/downloads/opensource/solaris-source-code-downloads.html. This software was built from source available at https://github.com/oracle/solaris-userland. The original community source was downloaded from https://www.openssl.org/source/openssl-1.0.2zi.tar.gz. Further information about this software can be found on the open source community website at https://www.openssl.org/. .SH "SEE ALSO" .IX Header "SEE ALSO" \&\fBopenssl\fR\|(1), \fBssl\fR\|(3)