CryptICS

Below is a randomly generated ciphertext(*), each block representing 128 bits. Click on any portion to introduce errors. Below, you can see how the error propagates through decryption with different block cipher modes.

Ciphertext(*):

4 e c f 9 e 1 9 2 3 d a 4 b f a e a f c 8 8 d 5 4 b c f 7 d 2 2
5 5 5 9 d d 3 5 9 e 6 7 e 8 2 b 0 0 f 2 8 b 9 2 d 8 9 1 5 c a b
6 e e 3 f 3 e a f 2 2 7 6 d 0 b b 5 f c 7 a d 8 e 9 a 9 d 9 8 b
6 1 b 2 a e f c d 4 9 9 e e f 0 7 7 1 d b a b c f 2 d 3 e e 9 0

Decrypted:

ECB
5 4 a c b e 1 5 0 b 2 9 d 6 2 6
0 e b 1 5 8 1 6 0 0 3 0 9 a 4 c
e a 1 2 8 5 6 9 8 5 f a 7 3 a d
8 1 2 9 3 8 9 4 d 6 c 3 5 4 1 9
0 3 0 8 4 6 2 b f 8 8 c 2 4 c 2
e 2 7 a 2 8 a e 3 3 e 2 e c 1 7
9 9 9 d e 4 2 9 f 6 9 7 1 5 e d
1 d 5 d e 0 6 a 6 9 7 9 9 4 2 a
CBC
5 4 a c b e 1 5 0 b 2 9 d 6 2 6
0 e b 1 5 8 1 6 0 0 3 0 9 a 4 c
e a 1 2 8 5 6 9 8 5 f a 7 3 a d
8 1 2 9 3 8 9 4 d 6 c 3 5 4 1 9
0 3 0 8 4 6 2 b f 8 8 c 2 4 c 2
e 2 7 a 2 8 a e 3 3 e 2 e c 1 7
9 9 9 d e 4 2 9 f 6 9 7 1 5 e d
1 d 5 d e 0 6 a 6 9 7 9 9 4 2 a
OFB
0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0
1 0 1 1 1 1 1 0 0 0 0 1 0 1 0 1
0 0 0 0 1 0 1 1 0 0 1 0 1 0 0 1
1 1 0 1 0 1 1 0 0 0 1 0 0 1 1 0
0 0 0 0 1 1 1 0 1 0 1 1 0 0 0 1
0 1 0 1 1 0 0 0 0 0 0 1 0 1 1 0
0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0
1 0 0 1 1 0 1 0 0 1 0 0 1 1 0 0
1 1 1 0 1 0 1 0 0 0 0 1 0 0 1 0
1 0 0 0 0 1 0 1 0 1 1 0 1 0 0 1
1 0 0 0 0 1 0 1 1 1 1 1 1 0 1 0
0 1 1 1 0 0 1 1 1 0 1 0 1 1 0 1
1 0 0 0 0 0 0 1 0 0 1 0 1 0 0 1
0 0 1 1 1 0 0 0 1 0 0 1 0 1 0 0
1 1 0 1 0 1 1 0 1 1 0 0 0 0 1 1
0 1 0 1 0 1 0 0 0 0 0 1 1 0 0 1
0 0 0 0 0 0 1 1 0 0 0 0 1 0 0 0
0 1 0 0 0 1 1 0 0 0 1 0 1 0 1 1
1 1 1 1 1 0 0 0 1 0 0 0 1 1 0 0
0 0 1 0 0 1 0 0 1 1 0 0 0 0 1 0
1 1 1 0 0 0 1 0 0 1 1 1 1 0 1 0
0 0 1 0 1 0 0 0 1 0 1 0 1 1 1 0
0 0 1 1 0 0 1 1 1 1 1 0 0 0 1 0
1 1 1 0 1 1 0 0 0 0 0 1 0 1 1 1
1 0 0 1 1 0 0 1 1 0 0 1 1 1 0 1
1 1 1 0 0 1 0 0 0 0 1 0 1 0 0 1
1 1 1 1 0 1 1 0 1 0 0 1 0 1 1 1
0 0 0 1 0 1 0 1 1 1 1 0 1 1 0 1
0 0 0 1 1 1 0 1 0 1 0 1 1 1 0 1
1 1 1 0 0 0 0 0 0 1 1 0 1 0 1 0
0 1 1 0 1 0 0 1 0 1 1 1 1 0 0 1
1 0 0 1 0 1 0 0 0 0 1 0 1 0 1 0
CFB
5 4 a c b e 1 5 0 b 2 9 d 6 2 6
0 e b 1 5 8 1 6 0 0 3 0 9 a 4 c
e a 1 2 8 5 6 9 8 5 f a 7 3 a d
8 1 2 9 3 8 9 4 d 6 c 3 5 4 1 9
0 3 0 8 4 6 2 b f 8 8 c 2 4 c 2
e 2 7 a 2 8 a e 3 3 e 2 e c 1 7
9 9 9 d e 4 2 9 f 6 9 7 1 5 e d
1 d 5 d e 0 6 a 6 9 7 9 9 4 2 a
CTR
0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0
1 0 1 1 1 1 1 0 0 0 0 1 0 1 0 1
0 0 0 0 1 0 1 1 0 0 1 0 1 0 0 1
1 1 0 1 0 1 1 0 0 0 1 0 0 1 1 0
0 0 0 0 1 1 1 0 1 0 1 1 0 0 0 1
0 1 0 1 1 0 0 0 0 0 0 1 0 1 1 0
0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0
1 0 0 1 1 0 1 0 0 1 0 0 1 1 0 0
1 1 1 0 1 0 1 0 0 0 0 1 0 0 1 0
1 0 0 0 0 1 0 1 0 1 1 0 1 0 0 1
1 0 0 0 0 1 0 1 1 1 1 1 1 0 1 0
0 1 1 1 0 0 1 1 1 0 1 0 1 1 0 1
1 0 0 0 0 0 0 1 0 0 1 0 1 0 0 1
0 0 1 1 1 0 0 0 1 0 0 1 0 1 0 0
1 1 0 1 0 1 1 0 1 1 0 0 0 0 1 1
0 1 0 1 0 1 0 0 0 0 0 1 1 0 0 1
0 0 0 0 0 0 1 1 0 0 0 0 1 0 0 0
0 1 0 0 0 1 1 0 0 0 1 0 1 0 1 1
1 1 1 1 1 0 0 0 1 0 0 0 1 1 0 0
0 0 1 0 0 1 0 0 1 1 0 0 0 0 1 0
1 1 1 0 0 0 1 0 0 1 1 1 1 0 1 0
0 0 1 0 1 0 0 0 1 0 1 0 1 1 1 0
0 0 1 1 0 0 1 1 1 1 1 0 0 0 1 0
1 1 1 0 1 1 0 0 0 0 0 1 0 1 1 1
1 0 0 1 1 0 0 1 1 0 0 1 1 1 0 1
1 1 1 0 0 1 0 0 0 0 1 0 1 0 0 1
1 1 1 1 0 1 1 0 1 0 0 1 0 1 1 1
0 0 0 1 0 1 0 1 1 1 1 0 1 1 0 1
0 0 0 1 1 1 0 1 0 1 0 1 1 1 0 1
1 1 1 0 0 0 0 0 0 1 1 0 1 0 1 0
0 1 1 0 1 0 0 1 0 1 1 1 1 0 0 1
1 0 0 1 0 1 0 0 0 0 1 0 1 0 1 0
(*) In the background, the same cleartext is encrypted and decrypted with each mode, the visible ciphertext is created using AES128-CBC and acts as a stand-in. Clicking a hex number will always flip the last bit of the 4 bits it represents in each ciphertext.