<!--$Id: env_set_encrypt.so,v 10.20 2003/11/08 19:17:28 bostic Exp $--> <!--Copyright 1997-2003 by Sleepycat Software, Inc.--> <!--All rights reserved.--> <!--See the file LICENSE for redistribution information.--> <html> <head> <title>Berkeley DB: DB_ENV->set_encrypt</title> <meta name="description" content="Berkeley DB: An embedded database programmatic toolkit."> <meta name="keywords" content="embedded,database,programmatic,toolkit,b+tree,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,Java,C,C++"> </head> <body bgcolor=white> <a name="2"><!--meow--></a> <table width="100%"><tr valign=top> <td> <h3>DB_ENV->set_encrypt</h3> </td> <td align=right> <a href="../../db42-devel-4.2.52/api_c/api_index.html"><img src="../../db42-4.2.52/images/api.gif" alt="API"></a> <a href="../../db42-devel-4.2.52/ref/toc.html"><img src="../../db42-4.2.52/images/ref.gif" alt="Ref"></a> </td></tr></table> <hr size=1 noshade> <tt> <h3><pre> #include <db.h> <p> int DB_ENV->set_encrypt(DB_ENV *dbenv, const char *passwd, u_int32_t flags); <p> int DB_ENV->get_encrypt_flags(DB_ENV *dbenv, u_int32_t *flagsp); </pre></h3> <hr size=1 noshade> <h3>Description: DB_ENV->set_encrypt</h3> <a name="3"><!--meow--></a> <p>Set the password used by the Berkeley DB library to perform encryption and decryption.</p> <p>The DB_ENV->set_encrypt method configures a database environment, not only operations performed using the specified <a href="../../db42-devel-4.2.52/api_c/env_class.html">DB_ENV</a> handle.</p> <p>The DB_ENV->set_encrypt method may not be called after the <a href="../../db42-devel-4.2.52/api_c/env_open.html">DB_ENV->open</a> method is called. If the database environment already exists when <a href="../../db42-devel-4.2.52/api_c/env_open.html">DB_ENV->open</a> is called, the information specified to DB_ENV->set_encrypt must be consistent with the existing environment or an error will be returned. </p> <p>The DB_ENV->set_encrypt method returns a non-zero error value on failure and 0 on success. </p> <h3>Parameters</h3> <p><dl compact> <p><dt><b>flags</b><dd> The <b>flags</b> parameter must be set to 0 or the following value: <p><dl compact> <p><dt><a name="DB_ENCRYPT_AES">DB_ENCRYPT_AES</a><dd>Use the Rijndael/AES (also known as the Advanced Encryption Standard and Federal Information Processing Standard (FIPS) 197) algorithm for encryption or decryption. </dl> <p><dt><b>passwd</b><dd> The <b>passwd</b> parameter is the password used to perform encryption and decryption. </dl> <h3>Errors</h3> <p>The DB_ENV->set_encrypt method may fail and return one of the following non-zero errors:</p> <p><dl compact> <p><dt>EINVAL<dd>If the method was called after <a href="../../db42-devel-4.2.52/api_c/env_open.html">DB_ENV->open</a> was called; or if an invalid flag value or parameter was specified. </dl> <p><dl compact> <p><dt>EOPNOTSUPP<dd>Cryptography is not available in this Berkeley DB release. </dl> <hr size=1 noshade> <h3>Description: DB_ENV->get_encrypt_flags</h3> <p>The DB_ENV->get_encrypt_flags method returns the encryption flags.</p> <p>The DB_ENV->get_encrypt_flags method may be called at any time during the life of the application.</p> <p>The DB_ENV->get_encrypt_flags method returns a non-zero error value on failure and 0 on success. </p> <h3>Parameters</h3> <p><dl compact> <p><dt><b>flagsp</b><dd> The DB_ENV->get_encrypt_flags method returns the encryption flags in <b>flagsp</b>. </dl> <hr size=1 noshade> <h3>Class</h3> <a href="../../db42-devel-4.2.52/api_c/env_class.html">DB_ENV</a> <h3>See Also</h3> <a href="../../db42-devel-4.2.52/api_c/env_list.html">Database Environments and Related Methods</a> </tt> <table width="100%"><tr><td><br></td><td align=right> <a href="../../db42-devel-4.2.52/api_c/api_index.html"><img src="../../db42-4.2.52/images/api.gif" alt="API"></a><a href="../../db42-devel-4.2.52/ref/toc.html"><img src="../../db42-4.2.52/images/ref.gif" alt="Ref"></a> </td></tr></table> <p><font size=1><a href="../../db42-devel-4.2.52/sleepycat/legal.html">Copyright (c) 1996-2003</a> <a href="http://www.sleepycat.com">Sleepycat Software, Inc.</a> - All rights reserved.</font> </body> </html>
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