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P5-tie-encryptedhash
Jul 20, 2023
Hashes (and objects based on hashes) with encrypting fields
TieEncryptedHash augments Perl hash semantics to build secure, encrypting containers of data. TieEncryptedHash 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 TieEncryptedHash 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 TieEncryptedHash’s opaque mode of access, optimized for serialization.
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