ST STM32F207 series User Manual

Cryptographic processor (CRYP) RM0033
512/1381 RM0033 Rev 9
Figure 196. DES/TDES-ECB mode encryption
1. K: key; C: cipher text; I: input block; O: output block; P: plain text.
Figure 197. DES/TDES-ECB mode decryption
1. K: key; C: cipher text; I: input block; O: output block; P: plain text.
IN FIFO
DEA, encrypt
K1
P, 64 bits
DEA, decrypt
K2
DEA, encrypt
K3
OUT FIFO
plaintext P
ciphertext C
64
64
64
swapping
O, 64 bits
C, 64 bits
swapping
DATATYPE
DATATYPE
ai16069b
IN FIFO
C, 64 bits
OUT FIFO
ciphertext C
plaintext P
DEA, decrypt
K3
DEA, encrypt
K2
DEA, decrypt
K1
64
64
64
I, 64 bits
swapping
O, 64 bits
DATATYPE
DATATYPE
P, 64 bits
swapping
MS19021V1

ST STM32F207 series Specifications

General

Brand	ST
Model	STM32F207 series
Category	Microcontrollers
Language	English