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Questions tagged [rc6]

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

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Input limitations on the RC6 cipher

RSA has limitation in input size for encryption and decryption. Can RC6 be used for encrytion and decryption of files larger than 5 MB? Is there any limitation for input size? Is RC6 safe for using ...
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3answers
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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 ...
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1answer
117 views

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

I am confused to analyze time complexity of rc6 encryption. Please help me
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1answer
238 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 ...
6
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1answer
660 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 ...