=pod

=head1 NAME

crypto - OpenSSL cryptographic library

=head1 SYNOPSIS

=head1 DESCRIPTION

The OpenSSL B<crypto> 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.

=head1 OVERVIEW

B<libcrypto> consists of a number of sub-libraries that implement the
individual algorithms.

The functionality includes symmetric encryption, public key
cryptography and key agreement, certificate handling, cryptographic
hash functions and a cryptographic pseudo-random number generator.

=over 4

=item SYMMETRIC CIPHERS

blowfish(3), cast(3), des(3), idea(3), rc2(3), rc4(3), rc5(3)

=item PUBLIC KEY CRYPTOGRAPHY AND KEY AGREEMENT

dsa(3), dh(3), rsa(3)

=item CERTIFICATES

x509(3), x509v3(3)

=item AUTHENTICATION CODES, HASH FUNCTIONS

hmac(3), md2(3), md5(3), mdc2(3), ripemd(3), sha(3)

=item AUXILIARY FUNCTIONS

err(3), rand(3)

=item INPUT/OUTPUT, DATA ENCODING

asn1(3), bio(3), evp(3), pem(3), pkcs7(3), pkcs12(3)

=item INTERNAL FUNCTIONS

bn(3), buffer(3), lhash(3), objects(3), stack(3), threads(3), txt_db(3)

=back

=head1 SEE ALSO

openssl(1), ssl(3)

=cut