docs - update pgcrypto with extension install information.
<topic id="topic_qml_2rd_yz">
<title>pgcrypto</title>
<body>
- <p>Greenplum Database is installed with an optional module of encryption/decryption
- functions called <codeph>pgcrypto</codeph>. The <codeph>pgcrypto</codeph>
- functions allow database administrators to store certain columns of data
- in encrypted form. This adds an extra layer of protection for sensitive
- data, as data stored in Greenplum Database in encrypted form cannot be
- read by anyone who does not have the encryption key, nor can it be read
- directly from the disks.</p>
- <note>The <codeph>pgcrypto</codeph> functions run inside the database server,
- which means that all the data and passwords move between
- <codeph>pgcrypto</codeph> and the client application in clear-text. For
- optimal security, consider also using SSL connections between the client
+ <p>Greenplum Database is installed with an optional module of encryption/decryption functions
+ called <codeph>pgcrypto</codeph>. The <codeph>pgcrypto</codeph> functions allow database
+ administrators to store certain columns of data in encrypted form. This adds an extra layer
+ of protection for sensitive data, as data stored in Greenplum Database in encrypted form
+ cannot be read by anyone who does not have the encryption key, nor can it be read directly
+ from the disks.</p>
+ <note>The <codeph>pgcrypto</codeph> functions run inside the database server, which means that
+ all the data and passwords move between <codeph>pgcrypto</codeph> and the client application
+ in clear-text. For optimal security, consider also using SSL connections between the client
and the Greenplum master server.</note>
- <p>See
- <xref href="https://www.postgresql.org/docs/9.4/pgcrypto.html" format="html"
+ </body>
+ <topic id="topic_reg">
+ <title>Installing and Registering the Module</title>
+ <body>
+ <p>The <codeph>pgcrypto</codeph> module is installed when you install Greenplum Database.
+ Before you can use any of the functions defined in the module, you must register the
+ <codeph>pgcrypto</codeph> extension in each database in which you want to use the
+ functions. <ph otherprops="pivotal">Refer to <xref
+ href="../../install_guide/install_modules.xml" format="dita" scope="peer">Installing
+ Additional Supplied Modules</xref> for more information.</ph></p>
+ </body>
+ </topic>
+ <topic id="topic_info">
+ <title>Additional Module Documentation</title>
+ <body>
+ <p>Refer to <xref href="https://www.postgresql.org/docs/9.4/pgcrypto.html" format="html"
scope="external">pgcrypto</xref> in the PostgreSQL documentation for more information
about the individual functions in this module.</p>
</body>
</topic>
+ </topic>
</dita>
