Cryptography

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Is it true that Public keys with even y coordinate correspond to private key that are less than n/2 and vice versa? (Secp256k1)
Awarded 10 hours ago
512/N-Bit Key AES
Awarded 2 days ago
The sum of independent discrete Gaussians is a discrete Gaussian
Awarded 2 days ago
Where can I find a comprehensive guide to running the NIST SP800-90B_EntropyAssessment?
Awarded Sep 29 at 15:43
computationally unbounded strategy of prover in zero knowledge proofs
Awarded Sep 27 at 18:32
Reduce AES-CTR malleability impact by shuffling plain text
Awarded Sep 26 at 8:55
HKDF-Expand max output length
Awarded Sep 24 at 20:02
Does the ECDSA private or public keys contain data about the signature hash algorithm?
Awarded Sep 23 at 10:41
Debug bcrypt iterations with a static salt [closed]
Awarded Sep 23 at 4:27
How much work to find such $n$?
Awarded Sep 22 at 0:31
Find Ed25519 Y Coordinate from X Coordinate
Awarded Sep 21 at 7:48
How are the unified addition formulae in extended twisted Edwards coordinates derived from the affine addition formulae?
Awarded Sep 21 at 4:52
Storing 4 char prefix for 32bit hex token after storing HMAC digest
Awarded Sep 19 at 11:50
In RSA, are e and d technically equivalent? [duplicate]
Awarded Sep 15 at 15:35
Security of Reusing a One-Time Pad with Complement Messages with Errors
Awarded Sep 12 at 14:01
PKCS#7 SignedData - how is the "encryptedDigest" constructed for RSAES‐PKCS‐v1_5?
Awarded Sep 11 at 12:05
Ed448 parameters wrong in RFC7748
Awarded Sep 10 at 8:27
Is there a hash function that is semi-two-way?
Awarded Sep 9 at 20:05
Non-determnistic ECDSA: is there any unique common factor of all signatures of the same message by the same private key?
Awarded Sep 8 at 22:50
ed448 generator choice in supercop
Awarded Sep 7 at 18:26
Is it safe to use signed messages from a private key to send to clients as tokens?
Awarded Sep 4 at 12:37
In a Diffie-Hellman key exchange Find this key and compute the shared secret key k
Awarded Sep 3 at 13:17
Combiners on PRG
Awarded Sep 2 at 7:04
Base64 or hex to attach auth tokens to URL?
Awarded Sep 1 at 15:08
Is there some restrictions on values of p,q,d,e etc in RSA algorithm while trying to encrypt English Ciphertext?
Awarded Sep 1 at 9:46
Symmetric MAC benefit
Awarded Sep 1 at 9:36
How to attest simultaneous knowledge of $2$ private keys?
Awarded Sep 1 at 9:15
Is this a secure way to implement E2EE to be decrypted be multiple parties?
Awarded Aug 31 at 13:26
How easy is it to know how many preimages an image might have, given that there's at least one (preimage, image) pair?
Awarded Aug 31 at 11:40
Why is this PRF not secure? [closed]
Awarded Aug 31 at 7:15
Solving colluding problem in Shamir's secret sharing
Awarded Aug 31 at 6:57
How much security is gained from hiding the nonce?
Awarded Aug 29 at 19:41
(In)security of multiplicative blinding / one-time-pad in a commutative ring
Awarded Aug 29 at 15:12
If a server and I had the possibility to sign the encrypted messages we exchange, would it still be useful to use TLS?
Awarded Aug 27 at 14:07
Why are interactive Zero-Knowledge-Proofs deniable?
Awarded Aug 27 at 11:56
NIST example shows extra hexadecimal characters in Block Contents of SHA512-256
Awarded Aug 27 at 8:05
How to encrypt data which never leave the client but can't be decrypted without the server?
Awarded Aug 26 at 15:10
Equality Check with EC Point Division using Bilinear Pairing
Awarded Aug 25 at 8:49
HMAC-MD5 or truncated HMAC-SHA512
Awarded Aug 24 at 9:52
How to encrypt strings in RSA (exercise)
Awarded Aug 23 at 14:41
Commutable and Composable Asymmetric Encryption/Decryption
Awarded Aug 20 at 20:51
RSA-based Double Ratchet Algorithm
Awarded Aug 20 at 13:26
Equivalance of encryption and decryption in DES under bruteforce
Awarded Aug 18 at 10:18
Zk Proof to Prove that I know the secret x of y = HASH(x)
Awarded Aug 18 at 7:35
Diffie-Hellman over $GF(2^{128})$
Awarded Aug 18 at 6:57
Encrypting data before Saas-solution
Awarded Aug 17 at 11:10
Precise heuristic for size of a uniform sample in $(\mathbb{Z} / N \mathbb{Z})^\times$
Awarded Aug 15 at 14:20
Is there a cryptographic algorithm that can make a "lottery ticket"?
Awarded Aug 15 at 13:35
Which ZK proving systems are statistically vs computationally zero knowledge?
Awarded Aug 14 at 18:46
How is Diffie-Hellman linked to AES?
Awarded Aug 11 at 15:36
ECCDH: direct or with temporary ECC keypairs?
Awarded Aug 10 at 14:45
Where is the definition of one-way trap-door function used in public key cryptography
Awarded Aug 7 at 23:03
AES vs Kuznechik (GOST R 34.12-2015) comparsion [closed]
Awarded Aug 6 at 7:56
GnuPG - provide encryption key for AES rather than deriving it from passphrase
Awarded Aug 6 at 5:36
How should I interpret this definition of the Dolev Yao Closure?
Awarded Aug 5 at 10:15
Uniform rejection sampling by shifting or rotating bits from CSPRNG output, safe?
Awarded Aug 3 at 9:12
Quantifying the success probability of brute force attack against (search) LPN
Awarded Aug 3 at 5:13
Why the definition of bilinearity property is different in cryptography compared to mathematics?
Awarded Aug 2 at 17:26
What is the meaning of the power notation in the access structure?
Awarded Aug 2 at 7:43
How does the ECIES-AES encryption work with a key size that is not supported by AES?
Awarded Aug 2 at 0:22
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