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Cryptography

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earned this badge 128 times.
Does the order of validations and MAC with clear text matter?
Awarded May 2 at 17:32
What is the recommended minimum key length for ECDSA signature
Awarded Apr 15 at 10:18
Why is Threefish not widely used?
Awarded Mar 16 at 17:42
CKM_RSA_PKCS vs CKM_RSA_X_509 mechanisms in PKCS#11
Awarded Feb 10 at 14:07
Anatomy of an RSA private key
Awarded Dec 26, 2022 at 1:20
AES256-CBC vs AES256-CTR in SSH
Awarded Dec 6, 2022 at 9:26
TLS 1.2 is still secure or should we move to TLS 1.3?
Awarded Jul 10, 2022 at 8:26
Is the Euler totient shared in the RSA algorithm?
Awarded Jul 10, 2022 at 0:42
Use Initialization Vector as Additional Authenticated Data
Awarded Mar 6, 2022 at 2:35
Comparing Files: Is it better to use multiple hash algorithms or just one?
Awarded Feb 1, 2022 at 16:02
What is wrong with XOR encryption with secure PRNG?
Awarded Jan 8, 2022 at 1:20
What are the differences between ephemeral-static ECDH and static-static ECDH?
Awarded Oct 29, 2021 at 12:06
What is the algorithm behind PasswordDeriveBytes?
Awarded Oct 27, 2021 at 6:27
Encryption of big files in Java with AES/GCM
Awarded Oct 3, 2021 at 21:57
Is HMAC needed for a SHA-3 based MAC?
Awarded Aug 2, 2021 at 18:47
Does perfect forward secrecy (using DH or ECDH) imply quantum resistance?
Awarded Jul 26, 2021 at 13:28
Benefits of functional programming languages
Awarded May 22, 2021 at 11:11
Is it possible that a SHA256 hash has the same hex character over and over again?
Awarded Apr 30, 2021 at 14:48
Is SHA-1 secure when used to implement a PRNG
Awarded Apr 12, 2021 at 3:28
What is different below two Ciphersuites?
Awarded Mar 18, 2021 at 15:00
Should I be using PKCS1 v1.5 or PSS for RSA signatures?
Awarded Mar 17, 2021 at 21:32
What is Deterministic Authenticated Encryption?
Awarded Jan 28, 2021 at 7:55
Why are RSA ciphertexts different for the same plaintext?
Awarded Jan 21, 2021 at 20:27
After 20 years of AES, what are the retrospective changes that should have been made?
Awarded Jan 18, 2021 at 23:40
What's the GCM-SHA 256 of a TLS protocol?
Awarded Jan 11, 2021 at 12:34
Can I base a public-key cryptosystem only on a hash algorithm?
Awarded Dec 9, 2020 at 9:27
How much safer is RSA-OAEP compared to RSA with PKCS#1 v1.5 padding?
Awarded Nov 27, 2020 at 15:17
Converting normal alphabets to 64 bit plain text
Awarded Oct 24, 2020 at 20:07
How to measure Cycles per Byte of an Algorithm?
Awarded Oct 13, 2020 at 23:06
Smallest possible certificate for IoT device
Awarded Oct 3, 2020 at 9:25
HMAC-SHA256 vs HMAC-SHA512 for JWT API authentication
Awarded Sep 21, 2020 at 8:27
Key exchange using ECDH vs ECIES?
Awarded Aug 27, 2020 at 16:26
What encryption should I use: Blowfish, Twofish, or Threefish?
Awarded Jul 22, 2020 at 14:35
Is it easy to crack a hashed phone number?
Awarded Jul 1, 2020 at 12:05
Can elliptic curve cryptography encrypt with public key and decrypt with private key like RSA?
Awarded Jun 14, 2020 at 21:41
Benchmark differences between SHA-512 and bcrypt
Awarded Jun 4, 2020 at 14:32
Key derivation functions (KDF): What are they, what are their main purposes and how they can be used?
Awarded Apr 18, 2020 at 23:51
How is the key shared in symmetric key cryptography?
Awarded Mar 19, 2020 at 3:05
How many codes can I safely generate using the same HMAC key?
Awarded Mar 13, 2020 at 21:05
What's the difference between PBKDF and SHA and why use them together?
Awarded Mar 3, 2020 at 7:45
How hard is it to guess a 8 digit PIN?
Awarded Jan 16, 2020 at 16:30
Is openssl rand command cryptographically secure?
Awarded Jan 15, 2020 at 16:50
Who is responsible for ensuring the trustworthiness of certificate authorities?
Awarded Dec 11, 2019 at 14:55
Is using RSA with SHA-1 considered as secure as HMAC-SHA-1?
Awarded Dec 6, 2019 at 12:30
Why does AES-GCM need a hash/MAC in TLS?
Awarded Nov 29, 2019 at 7:40
Building a combined encryption scheme from two encryption schemes that's secure if at least on of them is secure
Awarded Oct 29, 2019 at 8:25
Post Quantum Symmetric Cryptography
Awarded Oct 22, 2019 at 11:05
Which of these 3 AES 128 symmetric encrypt/decrypt routines is most secure?
Awarded Oct 1, 2019 at 11:25
Is deriving the IV from the password secure?
Awarded Sep 2, 2019 at 16:40
Spoken encryption
Awarded Jul 26, 2019 at 1:20
What's the appeal of using ChaCha20 instead of AES?
Awarded Jul 18, 2019 at 7:45
How many bits in the resultant hash will change, if the x bits are changed in its the original input?
Awarded Jul 17, 2019 at 11:00
Definition of authenticity
Awarded Jul 10, 2019 at 9:15
Does the size of a ECDSA key determine the hash algorithm?
Awarded May 27, 2019 at 17:10
CBC-Mode Infinite Garble Extension
Awarded May 1, 2019 at 12:40
One Time Pads and "Bit Flip" Attacks
Awarded Feb 12, 2019 at 12:50
Is there a contingency plan in the event of a catastrophic attack on AES?
Awarded Jan 19, 2019 at 3:15
Using Tweets as a Random seed
Awarded Jan 5, 2019 at 22:55
RSA: Is it secure to use the private key to encrypt and the public key to decrypt?
Awarded Nov 27, 2018 at 12:55
Why did TLS 1.3 prohibit PGP authentication?
Awarded Nov 14, 2018 at 9:40
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