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best choice for hashing and why?


niche
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The manual's on record against md5 and sha1. Is there a "best" choice and why in your opinion?

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Blowfish or SHA-512, using crypt(), and with a high cost/rounds parameter. Because those two, when given high values, take most time to compute. From what I've read, it seems like blowfish wins in the "most time to compute a single attempt" department, while SHA-512 produces a larger hash, meaning that it takes more attempts to come up with an input string that would produce an equivalent hash... In theory that is. In practice, currently, it's impossible to come up with an equivalent string for either Blowfish or SHA-512 without brute force, at which point the "time to compute a single attempt" is more important.

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http://www.kellermansoftware.com/t-articlestrongesthash.aspx you can read more of them here. about hashing many time has been discussed here. i wish the forum search option could be working.
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