bionic (7) crypto.7ssl.gz

Provided by: openssl_1.1.1-1ubuntu2.1~18.04.23_amd64 bug

NAME
       crypto - OpenSSL cryptographic library


SYNOPSIS
       See the individual manual pages for details.


DESCRIPTION
       The OpenSSL 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.

       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, cryptographic pseudo-random number generator, and various
       utilities.


NOTES
       Some of the newer functions follow a naming convention using the numbers 0 and 1. For example the
       functions:

        int X509_CRL_add0_revoked(X509_CRL *crl, X509_REVOKED *rev);
        int X509_add1_trust_object(X509 *x, const ASN1_OBJECT *obj);

       The 0 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 crl would be freed but rev would not.

       The 1 function uses a copy of the supplied structure pointer (or in some cases increases its link count)
       in the parent and so both (x and obj above) should be freed up.


RETURN VALUES
       See the individual manual pages for details.


SEE ALSO
       openssl(1), ssl(7)


       Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.

       Licensed under the OpenSSL license (the "License").  You may not use this file except in compliance with
       the License.  You can obtain a copy in the file LICENSE in the source distribution or at
       <https://www.openssl.org/source/license.html>.