Idea unit

The IDEA unit provides IDEA encryption support.

Besides some low level IDEA encryption routines, the IDEA unit also offers 2 streams which offer on-the-fly encryption or decryption: there are 2 stream objects: A write-only encryption stream which encrypts anything that is written to it, and a decryption stream which decrypts anything that is read from it.

Classes and records

`EIDEAError`	class	Exception for IDEA Stream errors.
`TIDEADeCryptStream`	class	IDEA Decryption stream.
`TIDEAEncryptStream`	class	IDEA encryption stream.
`TIDEAStream`	class	Ancestor stream for IDEA encryption/decryption streams.

Procedures and functions

`CipherIdea`	procedure	Encrypt or decrypt a buffer.
`DeKeyIdea`	procedure	Create a decryption key from an encryption key.
`EnKeyIdea`	procedure	Create an IDEA encryption key from a user key.

Types

`IdeaCryptData`	type	Alias for for TIDEACryptData.
`IdeaCryptKey`	type	Alias for for TIDEACryptKey.
`IDEAkey`	type	Alias for TIDEAKey.
`TIdeaCryptData`	type	Buffer type to hold encryption data.
`TIdeaCryptKey`	type	Type for holding an encryption/decryption IDEA key.
`TIDEAKey`	type	Type for holding a user IDEA key.

Constants

`IDEABLOCKSIZE`	constant	IDEA block size.
`IDEAKEYSIZE`	constant	IDEA Key size constant.
`KEYLEN`	constant	Key length.
`ROUNDS`	constant	Number of rounds to encrypt.

Uses

An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.