Cryptography

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Awarded 1662 times.
Calculation of the avalanche effect coefficient
Awarded Mar 15 at 14:56
GCM mode of operation with long-term keys
Awarded Mar 9 at 17:33
Why are ed25519 keys not recommended for encryption?
Awarded Mar 9 at 6:04
Encrypting a key with the same key, for instance using AES
Awarded Mar 7 at 21:27
Is knowing the private key of RSA equivalent to the factorization of $N$?
Awarded Mar 2 at 9:21
How does AWS Secret key and access key work
Awarded Feb 28 at 16:10
curve25519 weak points for contributory behaviour
Awarded Feb 20 at 15:34
Appropriate scrypt parameters when generating an scrypt hash
Awarded Feb 19 at 16:35
Is there a hash function that's more expensive for an attacker than for the server?
Awarded Feb 16 at 23:00
Understanding Feldman's VSS with a simple example
Awarded Feb 16 at 9:32
What is a trapdoor permutation?
Awarded Feb 15 at 0:55
Perfect shuffle possible with limited raw entropy?
Awarded Feb 13 at 14:11
ECIES vs. RSA + AES
Awarded Feb 10 at 23:04
Is there any protocol for proving that a message was written at a certain time?
Awarded Feb 10 at 3:15
Is $F'_k(x) = F_k(x) \oplus k$ a pseudo random function?
Awarded Feb 7 at 2:42
Why did OAEP change from PKCS#1 v2.0 and v2.1?
Awarded Feb 6 at 15:58
What are the drawbacks of "lightweight crypto"?
Awarded Feb 6 at 8:41
Offline Group Key Agreement - Cross Device Syncing
Awarded Feb 2 at 1:50
Share Conversion between Different Finite Fields
Awarded Feb 2 at 1:50
What is the origin of the phrase "Don't roll your own crypto"?
Awarded Feb 2 at 1:50
EC curve selection
Awarded Feb 1 at 13:03
Is anyone using ORAM in practice?
Awarded Feb 1 at 5:11
Hardness of iterated squaring in Pailler group
Awarded Feb 1 at 5:11
Why can ECC key sizes be smaller than RSA keys for similar security?
Awarded Feb 1 at 2:25
Existential unforgeability vs strong unforgeability
Awarded Jan 31 at 20:09
Functional difference between stream cipher, XOF, seed expander, KDF, etc
Awarded Jan 25 at 16:48
Usage difference between x86 RDRAND and RDSEED
Awarded Jan 24 at 15:26
What's the difference among Vector Commitment, Zero-knowledge Set, Zero-knowledge Accumulator, and Zero-knowledge Elementary Database?
Awarded Jan 24 at 8:07
Examples of protocols that are insecure when run concurrently
Awarded Jan 22 at 8:56
What is RSA-PSS and how is it different from a hash?
Awarded Jan 20 at 10:33
Regular MACs vs Carter-Wegman MAC
Awarded Jan 18 at 20:33
Kyber and Dilithium explained to primary school students?
Awarded Jan 17 at 3:56
Why don't crypto-currencies use the Lamport signature scheme?
Awarded Jan 12 at 23:03
How are curve names constructed?
Awarded Jan 9 at 22:56
Quantum Computing Used to Break RSA by "fixing" Schnorr's Recent Factorization Claim?
Awarded Jan 5 at 12:49
CBC-Mode Infinite Garble Extension
Awarded Dec 29, 2022 at 16:40
uniqueness of the RSA public modulus
Awarded Dec 25, 2022 at 23:46
Encryption of big files in Java with AES/GCM
Awarded Dec 22, 2022 at 10:17
How many additions modulo $2^k$ and multiplications in $\mathbb F_{2^k}$ are needed to resist cryptanalysis?
Awarded Dec 19, 2022 at 4:51
Why doesn't CTR mode require blocking?
Awarded Dec 15, 2022 at 13:57
What happens when a root CA has its private key compromised?
Awarded Dec 13, 2022 at 13:15
Perfect Steganography
Awarded Dec 13, 2022 at 0:36
Examples of frauds discovered because someone tried to mimic a random sequence [closed]
Awarded Dec 12, 2022 at 16:50
Zero-knowledge proof system which is not proof of knowledge?
Awarded Dec 7, 2022 at 2:52
Advantages/disadvantages of using symmetric encryption function as hash function?
Awarded Dec 7, 2022 at 2:52
Can I use a HMAC for Replay Attack protection?
Awarded Dec 6, 2022 at 2:49
Are there any applications of Quantum Computation to Cryptography? (besides Cryptanalysis)
Awarded Dec 5, 2022 at 4:27
How inefficient are current Indistinguishability Obfuscation (IO) candidates?
Awarded Dec 5, 2022 at 4:16
Does chaining random number generators lead to loss of randomness?
Awarded Dec 3, 2022 at 7:12
Real world use cases of Multi-Party Computation
Awarded Dec 3, 2022 at 7:12
Is an RSA variant with public exponent $e=f+(p-1)\cdot(q-1)$ safe (for $f$ random in some small interval)?
Awarded Dec 3, 2022 at 7:12
Why does GMP only run Miller-Rabin test twice when generating a prime?
Awarded Dec 3, 2022 at 4:42
Malleability attacks against encryption without authentication
Awarded Dec 2, 2022 at 8:40
Can the XOR of two non-collision-resistant hashes be collision resistant?
Awarded Dec 1, 2022 at 18:33
Why is the whole initial state used in the final addition of Salsa20 and ChaCha?
Awarded Dec 1, 2022 at 0:04
Predicting PRNG given some of its previous output
Awarded Nov 30, 2022 at 1:57
Is the Representation Problem hard on elliptic curves?
Awarded Nov 27, 2022 at 2:40
How can my application make sure the right symmetric key is used for decryption?
Awarded Nov 27, 2022 at 2:40
Are more complex algorithms easier to break with timing attacks?
Awarded Nov 27, 2022 at 2:40
How to solve cipher encrypted with Vigenère + Columnar Transposition?
Awarded Nov 21, 2022 at 21:27
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