- § Cryptography
- CFB is a block cipher mode of operation and is a close relative to CBC.
CFB make a block cipher into a self-synchronizing stream cipher.
- CFB can self-synchronize if multiple of block size is lost.
- If you need to allow dropping bits or bytes, you need to encrypt one bit or byte at a time (CFB can be combined with shift registers to do that).
- CFB does not require padding.