code::TEAEncryption Class Reference

List of all members.

---

Detailed Description

Implements the 128-bit Tiny Encryption Algorithm (TEA) by Wheeler and Needham, 1994 instead of more complicated, but also more secure, alternatives.

Note that TEA is a symmetric algorithm -- the key for encryption and decryption is the same.

Author:

Lakshman

Version:

Id

code_TEAEncryption.h,v 1.5 2009/06/02 20:17:40 lakshman Exp

Public Member Functions
	TEAEncryption (const std::vector< int > &key)
	Construct the encryptor/decryptor using the key.
	TEAEncryption (const std::vector< std::string > &key)
	Each string is assumed to be number.
bool	encrypt (std::vector< char > &data) const
	encrypt the input data.
bool	decrypt (std::vector< char > &data) const
	return whether or not we suceeded.
Classes
class	FourByteValue
	FourByteValue maintains data in both the local machine format and in PC-native format, and provides bit manipulation operations.

---

Constructor & Destructor Documentation

code::TEAEncryption::TEAEncryption

(

const std::vector< int > &

key

)

Construct the encryptor/decryptor using the key.

The key is 4 number each of 4-bytes (16-byte or 128-bit)

code::TEAEncryption::TEAEncryption

(

const std::vector< std::string > &

key

)

Each string is assumed to be number.

---

Member Function Documentation

bool code::TEAEncryption::decrypt

(

std::vector< char > &

data

)

const

return whether or not we suceeded.

bool code::TEAEncryption::encrypt

(

std::vector< char > &

data

)

const

encrypt the input data.

The data may be longer because of padding. return whether or not we suceeded.

Note: this method has no effect in exported versions of the WDSS-II software -- it leaves the data unchanged and returns "false".

---