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MySQL 5.6 Reference Manual  /  ...  /  OpenSSL Versus yaSSL

6.4.1 OpenSSL Versus yaSSL

MySQL can be compiled using OpenSSL or yaSSL, both of which enable secure conections based on the OpenSSL API:

  • MySQL Enterprise Edition binary distributions are compiled using OpenSSL. It is not possible to use yaSSL with MySQL Enterprise Edition.

  • MySQL Community Edition binary distributions are compiled using yaSSL.

  • MySQL Community Edition source distributions can be compiled using either OpenSSL or yaSSL (see Section 6.4.2, “Building MySQL with Support for Secure Connections”).

OpenSSL and yaSSL offer the same basic functionality, but MySQL distributions compiled using OpenSSL have additional features:

Certain OpenSSL-related system and status variables are present only if MySQL was compiled using OpenSSL:

To determine whether your server was compiled using OpenSSL, test the existence of any of those variables. For example, this statement returns a row if OpenSSL was used and an empty result if yaSSL was used:

SHOW STATUS LIKE 'Rsa_public_key';

Such tests assume that your server version is not older than the first appearance of the variable tested. For example, you cannot test for Rsa_public_key before MySQL 5.6.6.


User Comments
  Posted by Black Wolf on June 16, 2016
As a note on the comparison of yaSSL and OpenSSL in MYSQL there is an alpha version on wolfSSL's github transitioning from yaSSL to wolfSSL at https://github.com/wolfSSL/mysql-patch. yaSSL's compatibility layer for OpenSSL API's is limited in comparison to the embedded TLS/SSL wolfSSL library.
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