Questions tagged [sha-3]

SHA-3, also known as Keccak, is a cryptographic hash function standardized by NIST as a new alternative to the SHA-2 hash function family.

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Is there any cipher standard based on SHA-3, where it is not used as part of RFC2104?

I'm thinking about using a cipher, which uses AES CTR+SHA-3. My basic idea is this: IV|AES-CTR(PLAINTEXT_SIZE|PLAINTEXT|SHA-3(KEY|PLAINTEXT_SIZE|PLAINTEXT)) So, ...
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Using a bit sequence of zeros followed by one byte in Keccak

For what purpose it is not right to use a bit sequence of 2000+ zeros followed by one byte in Keccak? Is there a possible application of such input for Keccak? If yes, after which transformation?
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How are the Keccak rate and capacity bits determined at the beginning stage of the algorithm?

I'm learning about Keccak and am trying to understand more about the rate and capacity; specifically, how they are determined at ...
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How to use Botan to verify a web3 wallet/password?

The specification here seems quite clear, but unfortunately I'm still doing something wrong... I have this (single small c++ file) repository which very straightforwardly follows the password/wallet ...
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Security implication of concatenating two hashes using different algorithms

Background Hashing files is an expensive thing for CPU. I am tasked to write a secure digital signature scheme. For that, I decided to check the integrity of files using Hash/Digest. To be more secure,...