19dc78aef4
Tie::EncryptedHash augments Perl hash semantics to build secure, encrypting containers of data. Tie::EncryptedHash introduces special hash fields that are coupled with encrypt/decrypt routines to encrypt assignments at STORE() and decrypt retrievals at FETCH().
19 lines
1023 B
Plaintext
19 lines
1023 B
Plaintext
Tie::EncryptedHash augments Perl hash semantics to build secure, encrypting
|
|
containers of data. Tie::EncryptedHash introduces special hash fields that
|
|
are coupled with encrypt/decrypt routines to encrypt assignments at STORE()
|
|
and decrypt retrievals at FETCH(). By design, encrypting fields are
|
|
associated with keys that begin in single underscore. The remaining
|
|
keyspace is used for accessing normal hash fields, which are retained
|
|
without modification.
|
|
|
|
While the password is set, a Tie::EncryptedHash behaves exactly like a
|
|
standard Perl hash. This is its transparent mode of access. Encrypting
|
|
and normal fields are identical in this mode. When password is deleted,
|
|
encrypting fields are accessible only as ciphertext. This is
|
|
Tie::EncryptedHash's opaque mode of access, optimized for serialization.
|
|
|
|
Encryption is done with Crypt::CBC which encrypts in the cipher block
|
|
chaining mode with Blowfish, DES. Tie::EncryptedHash uses Blowfish
|
|
by default, but can be instructed to employ any cipher supported by
|
|
Crypt::CBC.
|