Henrick Hellström

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65 Answers

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0
Proper Way to Encrypt Data with Two Keys?
12
Is Wikipedia's table about SHA-2 collisions correct?
1
Generate fixed length cipher text from arbitrary length plaintext
2
Is there a way to do fair exchange between two parties who don't trust each other?
3
Does knowledge of original file size provide a cryptographic weakness?
2
What does $(\mathbb{Z}_n^*)^2$ mean?
1
how much is secure to encrypt a password using itself (as encryption key) for storing it on a unsecure media?
2
Implementing secret reconstruction in Shamir's Secret Sharing
1
Is AES really used for Top Secret stuff?
5
encrypt message with one digest 0-9 instead of 01-26
1
Knowing a valid salted hash for an unknown secret, is it possible to compute another valid hash?
5
Using the same secret key for encryption and authentication in a Encrypt-then-MAC scheme
4
Is it possible to work out the hash algorithm from a list of known message-hash pairs?
2
DSA signatures with related k and unknown payloads
4
Attack on DSA with signatures made with k, k+1, k+2
5
What's the difference between Trapdoor Functions and Encryption Functions?
3
What does the expression $1^n$ mean as a function argument?
4
Potential vulnerability in DH key selection - am I understanding this right?
4
What is the difference between a hash and a permutation?
1
Does Linear Cramer-Shoup have pseudo-random ciphertexts?
3
How difficult is it to check if a group element is in a sub group?
1
Timing attack on modular exponentiation
3
How to solve the reverse of an equation that uses MOD?
1
Is there a practical security difference between XXX-bit encryption?
2
What is the difference between a HMAC and a hash of data?
2
Deriving HMAC key and cipher key from passphrase?
2
Safety of a pre-keyed DH-Key Exchange
4
What is difference between PRG, PRF, and PRP
2
Is RSASSA-PKCS1-v1_5 a good signature scheme for new systems?
0
Questions about Key Derivation Functions
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