Is there any project to calculate different hashes like md5, sha1 etc. in solidity?

Question

I'm looking for solditiy-code to generate hashes of different hash-algorithms

• MD5
• SHA1
• SHA512

and more. Is there any project which implemented hash-algorithms in solidity?

Is there someone out there who also needs this?

Answer 1

A pure Solidity version of SHA1 can be found in this repository. (See sha1.sol to jump to the code.)

From the README:

Pure-solidity implementation of the SHA1 hash function, heavily optimised using inline-assembly.

Gas consumption is approximately 56k per 512 bit block.

Answer 2

Solidity implements several hash function:

• RIPEMD-160
• SHA-256
• Ethereum-SHA-3 (Keccak-256)

You can find additional information on the solidity website.