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Berkeley DB: DB_ENV->set_encrypt
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DB_ENV->set_encrypt
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#include <db.h>
int
DB_ENV->set_encrypt(DB_ENV *dbenv, const char *passwd, u_int32_t flags);
int
DB_ENV->get_encrypt_flags(DB_ENV *dbenv, u_int32_t *flagsp);
Description: DB_ENV->set_encrypt
Set the password used by the Berkeley DB library to perform encryption and
decryption.
The DB_ENV->set_encrypt method configures a database environment, not only operations
performed using the specified DB_ENV handle.
The DB_ENV->set_encrypt method may not be called after the DB_ENV->open method is
called.
If the database environment already exists when
DB_ENV->open is called, the information specified to DB_ENV->set_encrypt
must be consistent with the existing environment or an error will be
returned.
The DB_ENV->set_encrypt method
returns a non-zero error value on failure
and 0 on success.
Parameters
flags- The flags parameter must be set to 0 or
the following value:
DB_ENCRYPT_AES- Use the Rijndael/AES (also known as the Advanced Encryption Standard
and Federal Information Processing Standard (FIPS) 197) algorithm for
encryption or decryption.
passwd- The passwd parameter is the password used to perform encryption
and decryption.
Errors
The DB_ENV->set_encrypt method
may fail and return one of the following non-zero errors:
EINVAL- If the method was called after
DB_ENV->open
was called; or if an
invalid flag value or parameter was specified.
EOPNOTSUPP- Cryptography is not available in this Berkeley DB release.
Description: DB_ENV->get_encrypt_flags
The DB_ENV->get_encrypt_flags method returns the encryption flags.
The DB_ENV->get_encrypt_flags method may be called at any time during the life of the
application.
The DB_ENV->get_encrypt_flags method
returns a non-zero error value on failure
and 0 on success.
Parameters
flagsp- The DB_ENV->get_encrypt_flags method returns the
encryption flags in flagsp.
Class
DB_ENV
See Also
Database Environments and Related Methods
Copyright (c) 1996,2008 Oracle. All rights reserved.