User Thomas M. DuBuisson

14 votes

What is the advantage of AEAD ciphers?

answered Jul 31, 2015 at 10:12

11 votes

Accepted

Is it possible to create "non overlapping" RNGs?

answered Oct 2, 2015 at 15:02

6 votes

One Encryption, Many Decryption Keys

answered Aug 16, 2016 at 19:59

6 votes

Accepted

Why NaCL does not provide anonymous public key cryptography?

answered Jun 5, 2017 at 23:24

6 votes

Fixed point of the SHA-256 compression function

answered Jun 28, 2017 at 17:23

6 votes

Why should one prefer Salsa20 over ChaCha?

answered Jul 19, 2015 at 0:59

5 votes

Seed / reseed DRBG too often?

answered May 17, 2014 at 0:32

5 votes

Accepted

OTP - Reuse key BUT add IV, is it secure enough?

answered Apr 10, 2015 at 17:17

5 votes

Why does CTR mode become insecure after $2^{0.5 \times n}$ blocks?

answered Nov 30, 2017 at 19:22

4 votes

Can I use a key twice if the message is longer than the key in one-time pad?

answered Dec 23, 2017 at 17:21

4 votes

Is there a cryptographic solution for this “dating protocol”?

answered Feb 9, 2018 at 21:26

4 votes

Accepted

Can I simulate iterated AES-ECB with other block cipher modes?

answered Dec 27, 2014 at 17:40

4 votes

Accepted

What if OT breaks in Yao's garbled circuit?

answered Jan 17, 2015 at 3:19

4 votes

How Brittle Are LCG-Cracking Techniques?

answered Dec 11, 2014 at 1:28

4 votes

Safety of random nonce with AES-GCM?

answered Jan 14, 2017 at 20:26

3 votes

Accepted

How can one protect against a Man In The Middle attack during key exchange without using certificates?

answered Nov 12, 2015 at 15:17

3 votes

Brute force, get AES keys by multiple plain-texts with their cipher-texts

answered Jun 17, 2017 at 17:35

3 votes

Why are ephemeral/session/temporary keys useful?

answered Jun 20, 2017 at 5:47

3 votes

Are this recommendations from Colin Percival correct?

answered Feb 19, 2017 at 6:32

3 votes

Using simple hashing function to expand already secure key

answered Mar 9, 2017 at 5:18

3 votes

Shuffleless PRNG function with non-repeating values?

answered Jul 22, 2015 at 6:55

3 votes

Why is there a counter in CSPRNGs?

answered Nov 23, 2017 at 17:02

2 votes

Why does the key for a one-time pad have to be uniformly distributed?

answered Oct 8, 2018 at 4:05

2 votes

Accepted

Can high-entropy data be reconstructed from plaintext XORs in CTR nonce reuse?

answered Feb 12, 2018 at 17:22

2 votes

Collision or second preimage for the ChaCha core?

answered Jul 24, 2015 at 1:15

2 votes

How difficult is homomorphic encryption?

answered May 6, 2015 at 0:20

2 votes

Accepted

Looking for a secure PRNG that I can implement in hardware

answered Dec 12, 2014 at 21:50

2 votes

Accepted

HMAC_DRBG Generate Process: requesting N bytes at once different from requesting N bytes in total?

answered Oct 17, 2014 at 1:40

2 votes

Secure Two-party computation

answered Mar 13, 2017 at 21:17

2 votes

Are there any attacks / weak points with HMAC-SHA3?

answered Jun 8, 2017 at 22:25

Stack Exchange Network

44 Answers

What is the advantage of AEAD ciphers?

Is it possible to create "non overlapping" RNGs?

One Encryption, Many Decryption Keys

Why NaCL does not provide anonymous public key cryptography?

Fixed point of the SHA-256 compression function

Why should one prefer Salsa20 over ChaCha?

Seed / reseed DRBG too often?

OTP - Reuse key BUT add IV, is it secure enough?

Why does CTR mode become insecure after $2^{0.5 \times n}$ blocks?

Can I use a key twice if the message is longer than the key in one-time pad?

Is there a cryptographic solution for this “dating protocol”?

Can I simulate iterated AES-ECB with other block cipher modes?

What if OT breaks in Yao's garbled circuit?

How Brittle Are LCG-Cracking Techniques?

Safety of random nonce with AES-GCM?

How can one protect against a Man In The Middle attack during key exchange without using certificates?

Brute force, get AES keys by multiple plain-texts with their cipher-texts

Why are ephemeral/session/temporary keys useful?

Are this recommendations from Colin Percival correct?

Using simple hashing function to expand already secure key

Shuffleless PRNG function with non-repeating values?

Why is there a counter in CSPRNGs?

Why does the key for a one-time pad have to be uniformly distributed?

Can high-entropy data be reconstructed from plaintext XORs in CTR nonce reuse?

Collision or second preimage for the ChaCha core?

How difficult is homomorphic encryption?

Looking for a secure PRNG that I can implement in hardware

HMAC_DRBG Generate Process: requesting N bytes at once different from requesting N bytes in total?

Secure Two-party computation

Are there any attacks / weak points with HMAC-SHA3?