Cryptography

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Why does point addition work on EC curves?
Awarded 11 hours ago
Is it possible to give a definition for point multiplication on elliptic curve?
Awarded 14 hours ago
Is $H(k || m) \oplus k$ secure?
Awarded 21 hours ago
Notation question: Dividing 2 Elliptic Curve Points producing a third point
Awarded 23 hours ago
(post deleted or otherwise unavailable)
Awarded yesterday
How to decide if a point on a elliptic curve belongs to a group generated by a generator g?
Awarded yesterday
Solving a discrete log with BsGs
Awarded yesterday
How to securely derive a key from a list of sorted random bytes?
Awarded 2 days ago
RSA: why $( e^{-1} ~\text{mod}~ n \cdot \varphi(n)) ~\text{mod}~ \varphi(n) = e^{-1} ~\text{mod}~ \varphi(n)$ holds for a specific setting of RSA
Awarded Oct 23 at 20:01
Fernet symmetric-key encryption
Awarded Oct 23 at 13:41
Difference between Non-uniformly random and Uniformly random
Awarded Oct 22 at 11:57
problem with a discrete logarithm/cyclic groups example... can anyone clarify this concept for me?
Awarded Oct 21 at 10:54
How to have a hash function that maps from a group element to a binary string of a certain size in charm-crypto?
Awarded Oct 20 at 5:12
How "identifier" works in Symmetric Searchable Encryption?
Awarded Oct 20 at 5:12
How to find out what the order of the base point of the elliptic curve is?
Awarded Oct 19 at 11:35
In general, how do e2e messaging platforms deal with changes to the structure of the encrypted data?
Awarded Oct 18 at 6:31
Is GCM with zero-length AAD less secure?
Awarded Oct 18 at 0:11
Calculate multiplication of a cipher matrix and a plain matrix
Awarded Oct 17 at 22:34
Incrementing nonces vs regular nonces?
Awarded Oct 14 at 21:41
$2^{64}$ versions of the same message
Awarded Oct 14 at 16:32
Factoring a RSA modulus given parts of a Factor
Awarded Oct 13 at 20:20
How is a keyImage linked to a ring signature?
Awarded Oct 13 at 11:08
How to test Salsa20/8 Core RFC 7914 implementation with the test vectors?
Awarded Oct 10 at 4:57
Question related to Searchable Encryption
Awarded Oct 8 at 6:05
Superscript vs subscript notation in cryptographic formulation
Awarded Oct 7 at 20:56
Is this RSA-based IBE Scheme secure?
Awarded Oct 7 at 12:48
My fernet key "expired" what now?
Awarded Oct 6 at 22:07
How long does it take to generate signature for Elliptic Curve keys using the P-256 curve?
Awarded Oct 6 at 3:41
Quantum secure algorithms
Awarded Oct 5 at 13:57
Why key reuse is not an issue in a Feistel cipher?
Awarded Oct 4 at 17:06
Is the collision chance 2^(n/2) of an n-bit tag τ unchanged if reduced to (n/2)-bits using a reduction of τ to some 2^(n/2) order group element?
Awarded Oct 2 at 20:06
Why is a too fast hash function not secure?
Awarded Oct 1 at 11:08
Could celestial objects be used in cryptography?
Awarded Oct 1 at 10:01
Volume $q^n$ of a dual q-ary lattice in MR09
Awarded Oct 1 at 8:17
GL-SPHF and witness encryption
Awarded Sep 30 at 15:20
Does Endianness matter in NIST SP800-22 test?
Awarded Sep 30 at 11:51
Digital signature with Big Brother
Awarded Sep 29 at 9:56
Knowledge proof of private keys from DH key exchange
Awarded Sep 29 at 7:56
Protecting AES via Shamir Secret Sharing
Awarded Sep 29 at 4:06
Why do universal hash functions prevent adversarys, but uniform hash functions don't?
Awarded Sep 28 at 13:26
AES-GCM encryption in .NET Core
Awarded Sep 28 at 8:52
Conditioning a biased source with a block cipher?
Awarded Sep 28 at 3:06
Derivating random numbers from random numbers
Awarded Sep 26 at 17:10
Read ECDHE traffic with Wireshark or the like
Awarded Sep 25 at 22:27
Why is SHA3 more secure than SHA2?
Awarded Sep 25 at 17:48
CPA + one-time strong signature --> CCA?
Awarded Sep 25 at 9:01
How is WinZip AES different from normal AES
Awarded Sep 23 at 13:05
How to use Botan to verify a web3 wallet/password?
Awarded Sep 22 at 22:10
How are curve names constructed?
Awarded Sep 22 at 10:11
does OFB mode has diffusion on the plaintext?
Awarded Sep 21 at 12:21
HMAC key generation and encoding
Awarded Sep 20 at 14:17
How to reverse engineer Salt from password, iterations, and key?
Awarded Sep 20 at 13:42
Meet in the middle time complexity
Awarded Sep 20 at 13:11
Weakness of XORing random bytes with secret key
Awarded Sep 20 at 11:32
Chinese remainder theorem in ECDSA for parameters in secp256k1?
Awarded Sep 17 at 20:36
Q about points on an ECC curve
Awarded Sep 17 at 1:16
Can ECDH be used for authentication?
Awarded Sep 16 at 23:42
Safety of AES-256/CBC/PKCS#7 + randomization and reusage of IV
Awarded Sep 16 at 19:27
Is it possible to send a file that cannot be opened or copied by the reciever, but only by a pre made program?
Awarded Sep 16 at 17:52
breaking RSA with linear padding using Hastads attack with e>=11
Awarded Sep 16 at 8:12
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