Henrick Hellström

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74 Posts

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 answered Proper Way to Encrypt Data with Two Keys?
May
20
 answered Is Wikipedia's table about SHA-2 collisions correct?
May
16
 answered Generate fixed length cipher text from arbitrary length plaintext
May
13
 answered Is there a way to do fair exchange between two parties who don't trust each other?
May
9
 answered Does knowledge of original file size provide a cryptographic weakness?
May
7
 answered What does $(\mathbb{Z}_n^*)^2$ mean?
May
5
 answered how much is secure to encrypt a password using itself (as encryption key) for storing it on a unsecure media?
May
5
 answered Implementing secret reconstruction in Shamir's Secret Sharing
May
4
 answered Is AES really used for Top Secret stuff?
May
3
 answered encrypt message with one digest 0-9 instead of 01-26
May
2
 answered Knowing a valid salted hash for an unknown secret, is it possible to compute another valid hash?
Apr
23
 answered Using the same secret key for encryption and authentication in a Encrypt-then-MAC scheme
Apr
22
 answered Is it possible to work out the hash algorithm from a list of known message-hash pairs?
Apr
4
 answered DSA signatures with related k and unknown payloads
Apr
4
 answered Attack on DSA with signatures made with k, k+1, k+2
Mar
31
 answered What's the difference between Trapdoor Functions and Encryption Functions?
Mar
31
 asked Predicate Encryption supporting disjunctions
Mar
28
 answered What does the expression $1^n$ mean as a function argument?
Mar
27
 answered Potential vulnerability in DH key selection - am I understanding this right?
Mar
25
 asked Solving hard problems in $\mathbb Z_{p}^{*}$ when $\mathbb p$ is close to $\mathbb 2^{n}$
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