Cryptography

Necromancer

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Answer a question more than 60 days later with score of 5 or more. This badge can be awarded multiple times.
Awarded 501 times.
What size should the HMAC key be with SHA-256?
Awarded Aug 31 at 17:09
How can I visually explain M of N encryption (Shamir Key Sharing)?
Awarded Aug 16 at 2:10
Lack of response to CAESAR competition
Awarded Jul 27 at 11:07
MuSig: could the rogue key attack be mitigated by using commitments instead of key transformations?
Awarded Jun 20 at 14:50
Is a book cipher provably secure?
Awarded Jun 8 at 4:15
Argon2 - memory setting - lower bound?
Awarded Jun 7 at 18:21
(post deleted or otherwise unavailable)
Awarded Jun 1 at 1:31
What is a white-box implementation of a cryptographic algorithm?
Awarded May 23 at 6:36
BER or DER X9.62 for ECDSA signature
Awarded Apr 26 at 8:16
How is the initial permutation of DES created?
Awarded Apr 16 at 18:15
Is AES-256 a post-quantum secure cipher or not?
Awarded Apr 10 at 17:56
Who first published the interest of more than two prime factors in RSA?
Awarded Apr 9 at 9:56
Is knowing the private key of RSA equivalent to the factorization of $N$?
Awarded Mar 20 at 2:02
Is fixed key AES in counter mode a PRG?
Awarded Mar 13 at 15:04
What are the differences Between “White-Box Cryptography” and “Code Obfuscation”?
Awarded Feb 23 at 12:50
Is using quantum computing to break passwords non-sense?
Awarded Feb 14 at 20:17
Difference between collision resistance and target collision resistance
Awarded Feb 13 at 14:42
Is it true that Serpent and twofish are much stronger than AES?
Awarded Feb 4 at 18:06
Shamir Secret Sharing - P not prime
Awarded Jan 27 at 17:06
What are the popular modes-of-operation (AES-GCM, AES-SIV, AES-GCM-SIV, etc.) geared for?
Awarded Jan 7 at 16:16
Witness-Extended Emulation
Awarded Jan 4 at 16:52
Is 512-bit RSA still safe for signature generation?
Awarded Jan 1 at 1:27
Does pairings based cryptography inherently require a CRS/trusted setup?
Awarded Dec 31, 2022 at 9:27
Is there a standard for OpenSSL-interoperable AES encryption?
Awarded Dec 26, 2022 at 9:36
Can Grover's algorithm be parallelized?
Awarded Nov 12, 2022 at 4:55
How to choose between AES-CCM and AES-GCM for storage volume encryption
Awarded Nov 6, 2022 at 11:50
Why does TLS 1.3 use random-looking nonces for AEAD?
Awarded Oct 6, 2022 at 12:51
How common are weak RSA keys?
Awarded Sep 28, 2022 at 20:15
Why RSA uses {d,n} as private key instead of {e,n}?
Awarded Sep 16, 2022 at 12:51
Is XChacha20 - Poly1305 Quantum resistant?
Awarded Sep 13, 2022 at 9:23
Time Capsule cryptography?
Awarded Aug 20, 2022 at 14:18
Sigma protocol for AND-composition involving the same secret
Awarded Aug 2, 2022 at 23:17
Difficulty of Reversing Elliptic Curve
Awarded Jul 28, 2022 at 22:25
What is the recommended number of iterations for Argon2?
Awarded Jul 26, 2022 at 18:55
Should I use HMAC or KMAC for SHA3?
Awarded Jul 26, 2022 at 8:45
Is it possible to make time-locked encrytion algorithm?
Awarded Jul 8, 2022 at 20:36
Can we assume that a hash function with high collision resistance also means a highly uniform distribution?
Awarded Jun 13, 2022 at 14:25
Number of keys when using symmetric and asymmetric encryption?
Awarded Jun 12, 2022 at 17:56
Finding flaw in cryptographic protocol
Awarded May 14, 2022 at 16:21
Worst case of Integer factorization
Awarded May 2, 2022 at 13:33
Is there a complete summarized list of attacks on Diffie-Hellman?
Awarded May 2, 2022 at 10:51
Why is lattice-based cryptography believed to be hard against quantum computer?
Awarded Apr 16, 2022 at 5:42
Can CBC ciphertext be decrypted if the key is known, but the IV not?
Awarded Apr 15, 2022 at 23:08
Why we can't implement AES 512 key size?
Awarded Apr 6, 2022 at 11:46
How do you find a single cheater in Shamir Secret Sharing?
Awarded Apr 5, 2022 at 12:03
Deletion in RSA Accumulator
Awarded Apr 1, 2022 at 14:18
What does the work "An Efficient Quantum Algorithm for Lattice Problems Achieving Subexponential Approximation Factor" mean?
Awarded Feb 2, 2022 at 5:17
Is it possible to compute the y-coordinate of a point on SECP256K1, given only the x-coordinate
Awarded Jan 28, 2022 at 15:42
Designing a hash function from first principles rather than depending on heuristics
Awarded Jan 28, 2022 at 9:31
ECDH security when no KDF is used
Awarded Jan 19, 2022 at 9:41
Using Montgomery ladder to calculate the coordinates
Awarded Jan 18, 2022 at 15:55
Is there a specification for the "BEGIN RSA PRIVATE KEY" format?
Awarded Jan 8, 2022 at 22:01
What is the actual difference between security through obscurity and true encryption?
Awarded Jan 6, 2022 at 21:16
Why does the recommended key size between symmetric and asymmetric encryption differ greatly?
Awarded Jan 2, 2022 at 14:06
Fiat-Shamir vs Common Reference String to make NIZK
Awarded Dec 20, 2021 at 16:16
Purpose of outer key in HMAC
Awarded Dec 10, 2021 at 11:52
Why is AES resistant to known-plaintext attacks?
Awarded Dec 8, 2021 at 16:04
Which risks are associated with deriving multiple keys from the same DH secret Z?
Awarded Dec 7, 2021 at 11:33
Standard parameters for Boneh–Lynn–Shacham signature?
Awarded Dec 7, 2021 at 3:56
Are there any crypography schemes which rely on Graph Isomorphism not being in P?
Awarded Nov 17, 2021 at 19:18
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