Geremia G / Crypto

Fork of François Berder Crypto, fixed AES CBC and small rework

Dependents:   AES_example shaun_larada Smartage

Fork of Crypto by Francois Berder

cipher/TDES.cpp@16:4399e2e6260b, 2015-01-28 (annotated)

Committer:
Geremia
Date:
Wed Jan 28 17:55:13 2015 +0000
Revision:
16:4399e2e6260b
Parent:
8:a090264e9b2d 
AES: bugfixed CBC, added PCBC (i could add CFB and OFB if needed), added public setIV(), moved keyExpansion() to public, in and out buffers can be the same

Who changed what in which revision?

UserRevisionLine numberNew contents of line
feb11 8:a090264e9b2d 1 #include "TDES.h"
feb11 8:a090264e9b2d 2
feb11 8:a090264e9b2d 3 TDES::TDES(uint8_t *key1, uint8_t *key2, uint8_t *key3):
feb11 8:a090264e9b2d 4 BlockCipher(8,ECB_MODE),
feb11 8:a090264e9b2d 5 a(key1),
feb11 8:a090264e9b2d 6 b(key2),
feb11 8:a090264e9b2d 7 c(key3)
feb11 8:a090264e9b2d 8 {
feb11 8:a090264e9b2d 9
feb11 8:a090264e9b2d 10 }
feb11 8:a090264e9b2d 11
feb11 8:a090264e9b2d 12 TDES::TDES(uint8_t *key1, uint8_t *key2, uint8_t *key3, uint8_t *iv):
feb11 8:a090264e9b2d 13 BlockCipher(8,CBC_MODE,iv),
feb11 8:a090264e9b2d 14 a(key1),
feb11 8:a090264e9b2d 15 b(key2),
feb11 8:a090264e9b2d 16 c(key3)
feb11 8:a090264e9b2d 17 {
feb11 8:a090264e9b2d 18
feb11 8:a090264e9b2d 19 }
feb11 8:a090264e9b2d 20
feb11 8:a090264e9b2d 21 void TDES::encryptBlock(uint8_t *out, uint8_t *in)
feb11 8:a090264e9b2d 22 {
feb11 8:a090264e9b2d 23 uint8_t tmp[8], tmp2[8];
feb11 8:a090264e9b2d 24 a.encryptBlock(tmp,in);
feb11 8:a090264e9b2d 25 b.decryptBlock(tmp2,tmp);
feb11 8:a090264e9b2d 26 c.encryptBlock(out, tmp2);
feb11 8:a090264e9b2d 27 }
feb11 8:a090264e9b2d 28
feb11 8:a090264e9b2d 29 void TDES::decryptBlock(uint8_t *out, uint8_t *in)
feb11 8:a090264e9b2d 30 {
feb11 8:a090264e9b2d 31 uint8_t tmp[8], tmp2[8];
feb11 8:a090264e9b2d 32 c.decryptBlock(tmp, in);
feb11 8:a090264e9b2d 33 b.encryptBlock(tmp2, tmp);
feb11 8:a090264e9b2d 34 a.decryptBlock(out, tmp2);
feb11 8:a090264e9b2d 35 }