Introduction to IDEA Algorithm implementation with VHDL

Encryption can be of two types — Symmetric key or asymmetric key

IDEA (International Data Encryption Algorithm)

• Symmetric
• Block cipher, 4 x 16 bit input / output data
• 128 bit key (52 partial keys of 16 bit length)
• 16 bit operations — XOR, addition modulo 2 power 16, multiplication modulo 2 power 16 + 1.