The MDC calculations use this notation:
- eK(X)
- Denotes DES encryption of plaintext X using key K
- ||
- Denotes the concatenation operation
- XOR
- Denotes the exclusive-OR operation
- :=
- Denotes the assignment operation
- T8<1>
- Denotes the first 8–byte block of text
- T8<2>
- Denotes the second 8–byte block of text, and so on
- KD1, KD2, IN1, IN2, OUT1, OUT2
- Denote 64–bit quantities