1 This is the IDEA library of the SSLeay project.
3 IDEA is a block cipher invented by Xuejia Lai and James Massey in 1991.
4 A block cipher is an encryption algorithm that encrypts the data in blocks.
5 IDEA has a block size of 64 bits, and a keylength of 128 bits. IDEA is a
6 symmetrical algorithm, which means that the same key is used both for
7 encryption and for decryption.