Function speck_cbc::decrypt

pub fn decrypt<Endian: ByteOrder>(buffer: &mut [u8], key: &[u8], iv: &[u8])

Decrypt data with SPECK-CBC.

Endian is the endianness of key, iv, and the blocks.

key and iv's length must be BLOCK_SIZE.

buffer's length must be a multiple of BLOCK_SIZE.