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28.14. SSL Support

PostgreSQL has native support for using SSL connections to encrypt client/server communications for increased security. See Section 16.7 for details about the server-side SSL functionality.

If the server demands a client certificate, libpq will send the certificate stored in file ~/.postgresql/postgresql.crt within the user's home directory. A matching private key file ~/.postgresql/postgresql.key must also be present, and must not be world-readable. (On Microsoft Windows these files are named %APPDATA%\postgresql\postgresql.crt and %APPDATA%\postgresql\postgresql.key.)

If the file ~/.postgresql/root.crt is present in the user's home directory, libpq will use the certificate list stored therein to verify the server's certificate. (On Microsoft Windows the file is named %APPDATA%\postgresql\root.crt.) The SSL connection will fail if the server does not present a certificate; therefore, to use this feature the server must also have a root.crt file.

If you are using SSL inside your application (in addition to inside libpq), you can use PQinitSSL(int) to tell libpq that the SSL library has already been initialized by your application.


 
 
  Published courtesy of The PostgreSQL Global Development Group Design by Interspire