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<!--$Id: db_set_encrypt.so,v 10.3 2002/08/18 21:15:54 bostic Exp $--> <!--$Id: env_set_encrypt.so,v 10.23 2004/09/28 15:04:20 bostic Exp $--> <!--Copyright (c) 1997,2008 Oracle. All rights reserved.--> <!--See the file LICENSE for redistribution information.--> <html> <head> <title>Berkeley DB: DB->set_encrypt</title> <meta name="description" content="Berkeley DB: An embedded database programmatic toolkit."> <meta name="keywords" content="embedded,database,programmatic,toolkit,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,Java,C,C++"> </head> <body bgcolor=white> <table width="100%"><tr valign=top> <td> <b>DB->set_encrypt</b> </td> <td align=right> <a href="../../db4-devel-4.7.25/api_c/api_core.html"><img src="../../db4-devel-4.7.25/images/api.gif" alt="API"></a> <a href="../../db4-devel-4.7.25/ref/toc.html"><img src="../../db4-devel-4.7.25/images/ref.gif" alt="Ref"></a></td> </tr></table> <hr size=1 noshade> <tt> <b><pre> #include <db.h> <p> int DB->set_encrypt(DB *db, const char *passwd, u_int32_t flags); <p> int DB->get_encrypt_flags(DB *db, u_int32_t *flagsp); </pre></b> <hr size=1 noshade> <b>Description: DB->set_encrypt</b> <p>Set the password used by the Berkeley DB library to perform encryption and decryption.</p> <p>Because databases opened within Berkeley DB environments use the password specified to the environment, it is an error to attempt to set a password in a database created within an environment.</p> <p>The DB->set_encrypt method may not be called after the <a href="../../db4-devel-4.7.25/api_c/db_open.html">DB->open</a> method is called. </p> <p>The DB->set_encrypt method returns a non-zero error value on failure and 0 on success. </p> <b>Parameters</b> <br> <b>flags</b><ul compact><li>The <b>flags</b> parameter must be set to 0 or the following value: <br> <b><a name="DB_ENCRYPT_AES">DB_ENCRYPT_AES</a></b><ul compact><li>Use the Rijndael/AES (also known as the Advanced Encryption Standard and Federal Information Processing Standard (FIPS) 197) algorithm for encryption or decryption.</ul> <br></ul> <b>passwd</b><ul compact><li>The <b>passwd</b> parameter is the password used to perform encryption and decryption.</ul> <br> <br><b>Errors</b> <p>The DB->set_encrypt method may fail and return one of the following non-zero errors:</p> <br> <b>EINVAL</b><ul compact><li>If the method was called after <a href="../../db4-devel-4.7.25/api_c/db_open.html">DB->open</a> was called; or if an invalid flag value or parameter was specified.</ul> <br> <br> <b>EOPNOTSUPP</b><ul compact><li>Cryptography is not available in this Berkeley DB release.</ul> <br> <hr size=1 noshade> <b>Description: DB->get_encrypt_flags</b> <p>The DB->get_encrypt_flags method returns the encryption flags.</p> <p>The DB->get_encrypt_flags method may be called at any time during the life of the application.</p> <p>The DB->get_encrypt_flags method returns a non-zero error value on failure and 0 on success. </p> <b>Parameters</b> <br> <b>flagsp</b><ul compact><li>The DB->get_encrypt_flags method returns the encryption flags in <b>flagsp</b>.</ul> <br> <hr size=1 noshade> <br><b>Class</b> <a href="../../db4-devel-4.7.25/api_c/db_class.html">DB</a> <br><b>See Also</b> <a href="../../db4-devel-4.7.25/api_c/db_list.html">Databases and Related Methods</a> </tt> <table width="100%"><tr><td><br></td><td align=right> <a href="../../db4-devel-4.7.25/api_c/api_core.html"><img src="../../db4-devel-4.7.25/images/api.gif" alt="API"></a><a href="../../db4-devel-4.7.25/ref/toc.html"><img src="../../db4-devel-4.7.25/images/ref.gif" alt="Ref"></a> </td></tr></table> <p><font size=1>Copyright (c) 1996,2008 Oracle. All rights reserved.</font> </body> </html>
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