Cryptography

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What if the hash code of the genesis block (first block in the block chain) is changed?
Awarded 14 hours ago
Argon2 library that hashes passwords without a secret and with a random salt that doesn't appear parseable
Awarded 18 hours ago
Property of a good cipher system
Awarded 20 hours ago
Most efficient way to break md5?
Awarded yesterday
Encypt a file with AES using a secret key derived with Argon2
Awarded 2 days ago
Is encrypted e-mail sent over TLS 1.3 a form of “forward secrecy” (similar to something like Signal)?
Awarded Oct 14 at 5:25
How to represent the point-at-infinity(Elliptic Curves) in code? [duplicate]
Awarded Oct 13 at 14:35
Vulnerability of low value generated key
Awarded Oct 13 at 8:50
OTP stream cipher
Awarded Oct 13 at 6:55
Is there any problem to reuse the prime p, g and a in Diffie-Hellman?
Awarded Oct 13 at 0:05
Can I Implement a Well-Trusted Protocol with Well-Trusted Libraries in JavaScript securely?
Awarded Oct 12 at 15:50
Observing cipher suites and certificate algorithms without man-in-the-middle
Awarded Oct 11 at 6:00
Reference for the Security Analysis of Ring-LWE
Awarded Oct 10 at 14:40
Which groups to use for Pedersen Commitments
Awarded Oct 10 at 9:05
Is a number generator based on hashing an incremental string considered random?
Awarded Oct 9 at 18:30
Would it be safe to use the message hash as the IV in ChaCha?
Awarded Oct 9 at 5:35
How can frequency analysis be applied to modern ciphers?
Awarded Oct 9 at 1:40
Is this PGP key exchange secure?
Awarded Oct 9 at 1:30
How do I interpret the CADO-NFS output for discrete logarithm calculation in GF(p)?
Awarded Oct 9 at 1:05
How were the arbitrary values used inside SHA-256 algorithm determined?
Awarded Oct 8 at 20:05
Can Trivium be used as a PRF?
Awarded Oct 8 at 18:05
Password to password mapping
Awarded Oct 7 at 9:25
How long should a HMAC cryptographic key be?
Awarded Oct 7 at 8:45
Paillier Complex Residuosity problem?
Awarded Oct 6 at 16:45
CRC32 catches errors, but then what's the point of SHA?
Awarded Oct 6 at 11:55
What is the most secure encryption algorithm that keeps the entropy the same or even lowers it?
Awarded Oct 6 at 7:00
Algorithm/encryption technique which outputs a set number of numerical digits e.g. 20 digits from a given input
Awarded Oct 4 at 11:40
Is obfuscation considered a cryptographic primitive?
Awarded Oct 3 at 17:40
AES Cipher Block Chaining 128 bit message
Awarded Oct 3 at 7:25
Is it possible to sample HE ciphertexts using pseudo-random generator?
Awarded Oct 3 at 2:40
Is there an algorithm that allows to distribute elements securely between parties?
Awarded Oct 2 at 21:00
How to interpret a specific mathematical notation in “FIPS 202” (SHA-3 / Keccak)
Awarded Oct 2 at 18:15
Decrypting a substitution cipher, but with symbols instead of letters
Awarded Oct 2 at 15:10
Using an integer ring with RSA
Awarded Oct 1 at 16:00
Difference between strongly universal and $\delta$ univeral hash functions
Awarded Oct 1 at 10:30
OpenSSL: How to maintain padding from encryption after decryption?
Awarded Sep 30 at 16:55
Difference between MPC and outsourced computation
Awarded Sep 30 at 12:50
Can homomorphic encryption be used to exchange keys?
Awarded Sep 30 at 12:15
Understanding Encryption length calculation and rounds
Awarded Sep 30 at 6:50
What is Regular Digest/Hash Function
Awarded Sep 29 at 17:10
Is it necessary to have a certificate when we use TLS
Awarded Sep 28 at 15:15
Can you derive a 128 bit AES encryption key using PBKDF2 with SHA-256
Awarded Sep 28 at 10:50
“hex” vs. “base64” encoding when enciphering
Awarded Sep 27 at 16:45
How are AEAD, GCM, CBC, Poly1305, EtM, MtE and E&M related?
Awarded Sep 27 at 13:55
Would SHA-256(SHA-256(x)) produce collisions?
Awarded Sep 26 at 15:45
Rationale of the SHA-256 sigma function definitions
Awarded Sep 25 at 9:50
Building Key Streams from PRNGs
Awarded Sep 24 at 13:00
Signing AES Cipher
Awarded Sep 24 at 11:40
Does including the size of the hashed data improve security over just the hash
Awarded Sep 24 at 9:45
Does AES-ECB with random padding added to each block satisfy IND-CPA?
Awarded Sep 24 at 7:15
Definition of support in the context of an encryption scheme and usage of P = NP assumption in lemma 9.2 (Arora, Barak)
Awarded Sep 24 at 1:30
Is there a way to easily encode a message without a computer on either end?
Awarded Sep 23 at 12:40
AES key vs sector key
Awarded Sep 23 at 12:25
Hashing large messages, how does it work?
Awarded Sep 23 at 10:20
Understanding message reversible mapping function in group G
Awarded Sep 23 at 8:55
Optimising shor's algorithm [closed]
Awarded Sep 23 at 7:05
Why is the Domingo-Ferrer cryptosystem not used in practice?
Awarded Sep 22 at 23:05
How to distinguish a transposition cipher from a simple substitution cipher only given a ciphertext?
Awarded Sep 22 at 16:15
Differential privacy on medical data
Awarded Sep 22 at 10:15
Calculate d for RSA
Awarded Sep 22 at 2:30
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