SHA2 is a family of cryptographic hash algorithms, including SHA256 and SHA512. These are the successor to the SHA1 algorithm.
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votes
4answers
1k views
What is SHA-3 and why did we change it?
On the 2nd of October NIST decided that SHA-3 is the new standard hashing algorithm, does this mean we need to stop using SHA-2 as it is not secure?
What is this SHA-3 anyway?
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votes
4answers
428 views
Gold Standard for password hashing
I've developing a web application that will be dealing with highly sensitive information and I want to ensure the hashing of passwords is gold standard. Ideally I'd go for per-user salted SHA512 ...
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votes
1answer
970 views
Using PBKDF2 with AES and SHA2
I use the following inputs to encrypt using AES:
UserPassword (plain text)
SecretKey
RandomIV
I use the following inputs to encrypt using SHA512:
UserPassword (plain text)
RandomSalt
I'd ...
1
vote
1answer
54 views
What is the application of SHA384withRSAEncryption?
I am trying to understand the application of SHA384withRSAEncryption. SHA-384 is a message digest algorithm and RSA is used for public key cryptography (secure communication).
RSA involves a public ...
0
votes
3answers
199 views
Key stretching an hash
if I implement an function which hashes the first half of my password with MD5 and the second half with SHA2 and MD5. Is there a security issue when I put these two hashes together to a 64 character ...
0
votes
1answer
500 views
How many possibilities can today's computers check (per second) in a SHA512 hash of a 50-byte-long random entry? [closed]
The problem I want to avoid is "brute force" attacks against a database. So if I add a 50-byte-long cryptographically random salt to my information (which I don't need to retrieve, just its hash) - is ...
0
votes
1answer
61 views
what does GUID have that a whirlpool, md5 or sha2 hash dont
I'm trying to understand the use of GUID and what has always left me wondering is what's so special about them that I should consider using them instead of rolling my own type of unique id.
In other ...
0
votes
0answers
63 views
Recomended hash algorithm [duplicate]
Possible Duplicate:
How to securely hash passwords?
Do any security experts recommend bcrypt for password storage?
What would you choose between:
PBKDF2 SHA256 (270,000 iterations)
...
