Cryptography

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Question saved by 25 users. This badge can be awarded multiple times.
Awarded 66 times.
AES256-GCM - can someone explain how to use it securely (ruby)
Awarded Jan 8 at 4:52
Why does my SSH private key still work after changing some bytes in the file?
Awarded Dec 31, 2022 at 20:25
Why doesn't SSH use TLS?
Awarded Sep 19, 2022 at 22:57
What's the difference between RSA and Diffie-Hellman? [duplicate]
Awarded Jun 19, 2022 at 4:04
Calculating RSA private exponent when given public exponent and the modulus factors using extended Euclid
Awarded Jan 5, 2022 at 10:02
Does Schnorr's 2021 factoring method show that the RSA cryptosystem is not secure?
Awarded Dec 9, 2021 at 16:41
What's the fundamental difference between Diffie-Hellman and RSA?
Awarded Nov 10, 2021 at 20:10
Is Convergent Encryption really secure?
Awarded Nov 3, 2021 at 6:51
ECDSA vs ECIES vs ECDH
Awarded Oct 28, 2021 at 22:06
Differences between the terms "pre-master secret", "master secret", "private key", and "shared secret"?
Awarded Jun 26, 2021 at 6:46
Random oracle model proofs and programmability
Awarded Jun 18, 2021 at 10:08
Why haven't any SHA-256 collisions been found yet?
Awarded May 8, 2021 at 23:33
Why hash the message before signing it with RSA?
Awarded May 6, 2021 at 15:56
Why do some people believe that humans are "bad at" generating random numbers/characters like this?
Awarded Feb 11, 2021 at 23:27
What are recommended, general strategies to start block-cipher design and/or analysis?
Awarded Dec 12, 2020 at 20:27
How to find modulus from a RSA public key?
Awarded Jul 6, 2020 at 6:02
Signatures: RSA compared to ECDSA
Awarded May 6, 2020 at 9:16
Why Curve25519 for encryption but Ed25519 for signatures?
Awarded Mar 6, 2020 at 23:25
What are the differences between .pem, .csr, .key, .crt and other such file extensions?
Awarded Feb 18, 2020 at 20:50
Galois fields in cryptography
Awarded Oct 21, 2019 at 22:20
Impacts of not using RSA exponent of 65537
Awarded Aug 21, 2019 at 16:30
What is the SSL private key file format?
Awarded Aug 8, 2019 at 13:25
Signal vs Telegram in terms of protocols?
Awarded Jul 27, 2019 at 18:50
Difference between stream cipher and block cipher
Awarded Jun 4, 2019 at 6:30
What is the "Random Oracle Model" and why is it controversial?
Awarded Feb 26, 2019 at 10:55
Easy explanation of "IND-" security notions?
Awarded Jan 3, 2019 at 11:00
What is the difference between CBC and GCM mode?
Awarded Nov 26, 2018 at 17:35
What are the practical differences between 256-bit, 192-bit, and 128-bit AES encryption?
Awarded Sep 27, 2018 at 9:25
Why shouldn't I use ECB encryption?
Awarded Sep 11, 2018 at 11:50
How do I explain zero knowledge proof to my 7 year old cousin? [duplicate]
Awarded Jul 29, 2018 at 16:05
How come Public key cryptography wasn't discovered earlier?
Awarded May 29, 2018 at 10:45
Definition of textbook RSA
Awarded May 13, 2018 at 13:58
Is modern encryption needlessly complicated?
Awarded May 3, 2018 at 10:23
Why use an Initialization Vector (IV)?
Awarded Apr 13, 2018 at 5:30
How secure is AES-256?
Awarded Apr 2, 2018 at 18:17
In end-to-end encryption, doesn't the server need to be trusted?
Awarded Dec 25, 2017 at 3:17
How are primes generated for RSA?
Awarded Dec 24, 2017 at 14:43
RSA encryption with private key and decryption with a public key
Awarded Nov 28, 2017 at 1:39
Timing attack and good coding practices
Awarded Nov 10, 2017 at 18:50
Recommended skills for a job in cryptology [closed]
Awarded Sep 26, 2017 at 2:51
What is the difference between PKCS#5 padding and PKCS#7 padding
Awarded Aug 31, 2017 at 2:38
What is the new attack on SHA-1 "SHAttered" and how does it work?
Awarded Aug 2, 2017 at 4:03
How does RSA signature verification work?
Awarded Jul 29, 2017 at 9:57
Can you explain Bleichenbacher's CCA attack on PKCS#1 v1.5?
Awarded Jul 23, 2017 at 1:20
What is the main difference between a key, an IV and a nonce?
Awarded Jun 29, 2017 at 22:31
How does asymmetric encryption work?
Awarded Jun 21, 2017 at 8:55
Should I use ECB or CBC encryption mode for my block cipher?
Awarded Apr 11, 2017 at 22:04
How can I use asymmetric encryption, such as RSA, to encrypt an arbitrary length of plaintext?
Awarded Apr 11, 2017 at 22:04
Why can't we reverse hashes?
Awarded Apr 11, 2017 at 21:54
How does one attack a two-time pad (i.e. one time pad with key reuse)?
Awarded Mar 9, 2017 at 4:50
Taking advantage of one-time pad key reuse?
Awarded Feb 13, 2017 at 18:55
Why is writing your own encryption discouraged?
Awarded Jan 29, 2017 at 9:08
Basic explanation of Elliptic Curve Cryptography?
Awarded Oct 27, 2016 at 14:16
How should I calculate the entropy of a password?
Awarded Aug 25, 2016 at 10:53
What is a cryptographic "salt"?
Awarded Jul 6, 2016 at 8:35
Why does the FBI ask Apple for help to decrypt an iPhone?
Awarded Mar 15, 2016 at 16:37
Guarding against cryptanalytic breakthroughs: combining multiple hash functions
Awarded Jan 16, 2016 at 12:51
What are the differences between a digital signature, a MAC and a hash?
Awarded Jan 12, 2016 at 12:30
How much would it cost in U.S. dollars to brute-force a 256-bit key in a year?
Awarded Dec 23, 2015 at 7:30
How can I generate large prime numbers for RSA?
Awarded Nov 9, 2015 at 10:42
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