What hashes are common hashes? used on the net and other programs?

Question

I seen MD5 and SHA1 hashes on the net to verify files. What are common hashes used on the net and other programs? This is to verify a file not to hash a pw.

Answer 1

I never used anything else than MD5. Add a Salt if you use it for passwords.

Answer 2

To verify files you can use cyclic redundancy checks, such as CRC32, which have been as far as I know the de-facto standard for hashing files for a long time in the IT, if you want to look at other stuff than MD5/SHA.

See also this list of checksum algorithms for more ways to check your files.

Answer 3

Wikipedia has a list of hash functions, broken up into different types (checksums, non-crypto, crypto etc).

Answer 4

The Apache Foundation (among others) uses PGP Signatures.

Answer 5

I've used some hash functions from the following site before - they are usually pretty quick, and full code is given on the website, and a description of each of the functions and their strengths/weaknesses:

http://www.partow.net/programming/hashfunctions

Examples of the hashes given are - Kernighan and Ritchie (from "The C Programming Language") and the Knuth hash (from "The Art Of Computer Programming Volume 3").