Cryptography

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ECC private key generation collision
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Encryption of small messages
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Do certificates need to be stored as encrypted?
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How can I generate a Koblitz curve?
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Secret sharing scheme with ability to add or update share number
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Can non-repudiation be ensured without public-key cryptography?
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Coppersmith's method implementation
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Need to generate same ciphertext everytime
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Understanding Key space
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What criteria make the theta step of Keccak's round function reversible?
Awarded 2 days ago
Is it proven that breaking RSA is equivalent to factoring as of 2021?
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How is Cross-Certification implemented?
Awarded May 10 at 2:05
Does the security of RSA come from just the carries in multiplication?
Awarded May 9 at 19:16
How to implement the Salsa20 hash function?
Awarded May 9 at 13:11
Why do we have fixed output length in the algorithm SHA1
Awarded May 9 at 4:11
Can anyone briefly explain the 'theta step' of compression box in SHA3?
Awarded May 9 at 1:20
Security concern with TOTP
Awarded May 8 at 21:46
Digital signature providing a proof of file authenticity
Awarded May 7 at 15:11
Secure degree reduction for Shamir's secret sharing
Awarded May 7 at 9:50
Length Extension attacks in SHA1 and MD5?
Awarded May 6 at 20:55
Does AES use different keys for each block of plaintext?
Awarded May 6 at 18:12
Size of p in ElGamal cryptosystem?
Awarded May 6 at 17:32
Prove preimage resistance property [closed]
Awarded May 6 at 8:41
Use R-CTR (randomized counter mode) to compute MAC
Awarded May 5 at 23:56
AES— Brute force attack versus Known plain text attack
Awarded May 5 at 23:32
Signal Sender Keys: Why it works and which is the common key at the end?
Awarded May 5 at 9:37
Why does TLS 1.3 use random-looking nonces for AEAD?
Awarded May 5 at 7:28
Does ChaCha20 counter actually increment through iterations?
Awarded May 5 at 6:13
Converting raw ECC private key into ASN.1 DER encoded key
Awarded May 5 at 5:25
bcrypt collision probabilities assuming same password and work factor?
Awarded May 5 at 4:25
Why use CCM instead CBC-then-MAC?
Awarded May 5 at 1:06
Does IND-CPA imply PRF?
Awarded May 4 at 20:54
Public Key generation for Ed25519 vs X25519
Awarded May 4 at 11:23
Given enough RSA ciphertext, is it possible to determine which key was used?
Awarded May 4 at 7:55
HMAC does it matter if I chose the cipher text or the plain text as the message? [duplicate]
Awarded May 3 at 15:26
What is transaction capacity of a POS using 3DES DUKPT?
Awarded May 3 at 11:27
Substitution-permutation network visualizer
Awarded May 3 at 5:11
Correct way to read a given permutation cipher?
Awarded May 2 at 16:31
One-time pad XOR question
Awarded May 1 at 23:38
Cryptographically secure product keys
Awarded May 1 at 21:49
Is direct RSA encryption of AES keys secure?
Awarded May 1 at 20:15
Would SHA-256(SHA-256(x)) produce collisions?
Awarded May 1 at 8:38
Is it possible that a SHA256 hash has the same hex character over and over again?
Awarded Apr 30 at 11:50
Concrete example of Weil Pairing
Awarded Apr 30 at 10:54
How to derive the curve Ed25519 from Curve25519?
Awarded Apr 29 at 9:47
Question on MAC Forgery
Awarded Apr 29 at 8:27
Do any cryptography algorithms work on numbers besides primes?
Awarded Apr 28 at 18:59
What is the maximum number of shares in Shamir's Secret Sharing?
Awarded Apr 28 at 9:46
Prove that pseudorandom generator is a one way function
Awarded Apr 27 at 22:50
How can frequency analysis be applied to modern ciphers?
Awarded Apr 27 at 19:16
Time Based encryption [duplicate]
Awarded Apr 27 at 15:20
Is EC integrated encryption scheme used in practice?
Awarded Apr 27 at 13:54
Generate private key from public key RSA
Awarded Apr 27 at 5:04
Why can't we give block ciphers larger keys?
Awarded Apr 26 at 21:17
Ring signatures in ECC
Awarded Apr 26 at 12:52
Multiplicative inverse in ${GF}(2^4)$
Awarded Apr 25 at 18:13
Is a message digest useful with symmetric encryption to check for integrity?
Awarded Apr 25 at 17:18
What is the sponge construction in simple terms?
Awarded Apr 25 at 15:17
Suitable 16-bit checksum?
Awarded Apr 25 at 15:01
Is there a general way to crack this graph cipher? [closed]
Awarded Apr 25 at 2:44
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