# All Questions

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### any post-shannon symmetric ciphers?

As far as I understand block ciphers use only simple operations to ensure good enough confusion and diffusion levels. meaning there is no math in it. "breaking a good cipher should require as much ...
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### Does changing the order of the steps within a round affect the security of AES?

I was trying to understand the internal structure of AES (Advanced Encryption Standard) Standard order of steps within a round: Substitute Bytes Shift Rows Mix Columns Add Round Key Substitute ...
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### What do the last chunks of the output string of Scrypt contain?

When you use scrypt to hash a string, it will generate something like: SCRYPT:4096:8:1:8zCQhTI8y2pdrFeIj2WYBJIbaLiePLOuXdbevG7XDV4qgUuiGPCXPFjh1aEmXQ/5u+SlCvz0KkcoOJtUWBkytfkCs2OZep60W+...
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### Why is symmetric lightweight crypto only about block ciphers and not about stream ciphers?

Why is symmetric lightweight cryptography only about block ciphers and not about stream ciphers? AFAIK stream cipher implementations cost at least three times less than block cipher ones?
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### Is it possible to test implementation for side-channel attacks?

When it comes to implementing cryptographic algorithms, there seems to be a big focus on the difficulty of doing so without introducing the potential for side channel attacks and the knowledge ...
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### Explanation of cryptographic terminology for newbies [on hold]

I feel like I'm making a mountain out of a molehill here, but I have (what should be) a relatively simple project, but the terminology used all over the Internet is either too simple or too difficult ...
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### Can someone help me decipher this? [on hold]

I have absolutely no idea what this is or how to decipher it. Could you either do it... or help me learn how to? ...
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### Any benefit to writing a message as a mix of 2 languages before encryption?

For example, imagine a message that is a mix of Japanese and English words; Japanese in unicode, English in ASCII. Japanese doesn't use spaces between words. The sentence structures, anything ...