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View Full Version : MD5 or SHA1 Encription



the-dream
08-23-2007, 06:00 PM
Which is best? I know MD5 is 128-Bit and SHA1 160-Bit. But which one is better for a login system!

aedrin
08-23-2007, 06:50 PM
http://www.google.com/search?q=md5+vs+sha1

CFMaBiSmAd
08-23-2007, 07:02 PM
Whichever hash method you use, always append/prepend a "salt" string to the value being hashed. This will make the brute-force/dictionary/database-lookup methods ineffective at finding the original value.

felgall
08-23-2007, 08:45 PM
MD5 already has a lookup table constructed for unsalted values that will provide an enterable value to match any hash and so must use a salt to have any security at all. SHA1 is way more secure and has yet to be broken that way. With a salt MD5 is secure enough for most purposes.

crypthacks
08-24-2007, 08:03 AM
sha indeed

wayne3503
08-24-2007, 08:24 PM
sha1 all the way

rafiki
08-24-2007, 08:34 PM
i use sha1()



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