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Results tagged with sha
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user 971
Secure Hash Algorithm is a family of cryptographic hash functions published by NIST. This includes SHA-1, and the SHA-2 and SHA-3 families of functions. SHA-1 is deprecated for all usages.
5
votes
Is it possible to know the key if we have the original value and the hash using HmacSHA1?
It is not possible to recover the key ... assuming the key has sufficient entropy.
Here's what the attacker can do. If the attacker has a guess at the key, the attacker can check whether his guess i …
- 100k
37
votes
Is SHA1 better than MD5 only because it generates a hash of 160 bits?
No. It's not just the length of the output. There are significant differences in their level of security against cryptanalytic attacks.
There are devastating collision attacks on MD5. (The Wikiped …
- 100k