DbEnv::set_encrypt |

`

    #include <db_cxx.h>

    int
    DbEnv::set_encrypt(const char *passwd, u_int32_t flags);

    int
    DbEnv::get_encrypt_flags(u_int32_t *flagsp);

Description: DbEnv::set_encrypt

Set the password used by the Berkeley DB library to perform encryption and decryption.

The DbEnv::set_encrypt method configures a database environment, not only operations performed using the specified DbEnv handle.

The DbEnv::set_encrypt method may not be called after the DbEnv::open method is called. If the database environment already exists when DbEnv::open is called, the information specified to DbEnv::set_encrypt must be consistent with the existing environment or an error will be returned.

The DbEnv::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.

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 DbEnv::set_encrypt method may fail and throw DbException, encapsulating one of the following non-zero errors, or return one of the following non-zero errors:

EINVAL

- If the method was called after DbEnv::open was called; or if an invalid flag value or parameter was specified.

EOPNOTSUPP

- Cryptography is not available in this Berkeley DB release.

Description: DbEnv::get_encrypt_flags

The DbEnv::get_encrypt_flags method returns the encryption flags.

The DbEnv::get_encrypt_flags method may be called at any time during the life of the application.

The DbEnv::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.

Parameters
flagsp

- The DbEnv::get_encrypt_flags method returns the encryption flags in flagsp.

Class DbEnv
See Also Database Environments and Related Methods`

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