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<b>Db::set_encrypt</b>
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<tt>
<b><pre>
#include <db_cxx.h>
<p>
int
Db::set_encrypt(const char *passwd, u_int32_t flags);
<p>
int
Db::get_encrypt_flags(u_int32_t *flagsp);
</pre></b>
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<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="../api_cxx/db_open.html">Db::open</a> method is called.
</p>
<p>The Db::set_encrypt method
either returns a non-zero error value
or throws an exception that encapsulates a non-zero error value on
failure, and returns 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 throw
<a href="../api_cxx/except_class.html">DbException</a>,
encapsulating one of the following non-zero errors, or return one of
the following non-zero errors:</p>
<br>
<b>EINVAL</b><ul compact><li>If the method was called after
<a href="../api_cxx/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>
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<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
either returns a non-zero error value
or throws an exception that encapsulates a non-zero error value on
failure, and returns 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>
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<br><b>Class</b>
<a href="../api_cxx/db_class.html">Db</a>
<br><b>See Also</b>
<a href="../api_cxx/db_list.html">Databases and Related Methods</a>
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