Questions tagged [rc6]

RC6 is a 128-bit block cipher, formerly an AES candidate, that makes heavy use of data-dependent rotations.

Filter by
Sorted by
Tagged with
3
votes
1answer
7k views

Difference between RC2, RC4, RC5 and RC6

Can anyone point out the core differences between RC variations?
2
votes
3answers
1k views

Input limitations on the RC6 cipher

RSA has limitation in input size for encryption and decryption. Can RC6 be used for encryption and decryption of files larger than 5 MB? Is there any limitation for input size? Is RC6 safe for using ...
5
votes
3answers
207 views

How to determine required number of rounds for RC6 cipher given custom W and B parameters?

The RC6 symmetric block cipher is parameterized with three parameters : W : The number of bits in a machine word (8 , 16 , 32 , 64) B : The number of bytes specifying key length (0 to 255) R : The ...
0
votes
1answer
156 views

What is the time complexity of the RC6 encryption? [closed]

I am confused to analyze time complexity of rc6 encryption. Please help me
1
vote
1answer
320 views

RC6 Key Size Understanding

I need help to understand how RC6 works. Many sites show that the maximum key size of RC6 is 2040 bits (255 Bytes). I can also have 0..255 rounds and 4 times 32bits words in the 128bit block variant ...
7
votes
1answer
703 views

What could “look for the constants that you might find in RC6” mean?

In this presentation at the 30c3 (long but extremely interesting and well-documented), Jacob Appelbaum gave this verbal advice (circa 43'30"): look for the constants that you might find in RC6 I'm ...
5
votes
1answer
319 views

MARS and RC6 in CUDA

I am working on a project where I am benchmarking the 5 AES finalists (Rijndael, Twofish, Serpent, MARS and RC6) on CUDA Hardware. My problem is that I am no experienced CUDA programmer. My approach ...