User Richard Thiessen

7 votes

Theoretical Approaches to crack large files encrypted with AES

answered 10 hours ago

6 votes

Accepted

why ransomwares are still problematic?

answered May 13, 2017 at 20:42

6 votes

Accepted

A practical algorithm for proof of age

answered Jun 1, 2017 at 1:52

6 votes

Accepted

How can I generate reasonably short temporary unlock codes?

answered Jun 17, 2017 at 4:29

6 votes

How to prevent power analysis on software level?

answered May 4 at 19:45

4 votes

Accepted

Secret IV MAC with weak hash function

answered May 16, 2017 at 4:16

4 votes

Accepted

Leaking key when adding small order point

answered May 21 at 21:40

4 votes

Providing tokens for anonymous survey

answered May 24 at 20:39

4 votes

Verify HMAC tag without knowing the key

answered May 29 at 11:19

3 votes

Accepted

Secure encryption in the presence of a keyservice

answered May 27 at 1:32

3 votes

Authenticated encryption scheme for one-way radio telemetry

answered May 19 at 5:21

3 votes

Accepted

Securely derive multiple EC keys from master EC key and prove it

answered May 9 at 8:48

3 votes

Are passkeys actually hardware keys or are they just reversibly encrypted keys secured by a hardware key?

answered May 10 at 2:02

3 votes

Accepted

In sha256, is it possible to use less information than the full preimage to prove that the prefix of the preimage is a certain string

answered Jun 14, 2021 at 3:44

3 votes

Accepted

Does it take brute force to find a pair of plaintext and ciphertext that each follow a certain condition, given an AES encryption key?

answered Dec 4, 2016 at 22:42

3 votes

Would a symmetric cipher with a keylength a big as the data length be information theoretically secure?

answered Dec 4, 2016 at 3:22

2 votes

A block cipher with independent keys for each round

answered Dec 4, 2016 at 1:11

1 vote

What is the importance of adding round key in AES

answered Jan 13, 2015 at 11:36

1 vote

Accepted

What is a simple information authentication protocol for constrained devices?

answered Dec 5, 2016 at 22:12

1 vote

Accepted

Does the size of a file influence the randomness if used as random input?

answered May 13, 2017 at 20:15

1 vote

Accepted

Are there any attacks on the key exchange when the client and the server are using the same private key?

answered May 14, 2017 at 14:17

1 vote

Public Key Encryption scheme with small messages among many parties

answered May 30, 2018 at 17:19

1 vote

Accepted

Trivial Broadcast Encryption Scheme for video conferencing how well does it handle users joining or leaving a call?

answered Aug 12, 2018 at 14:30

1 vote

Accepted

Secure offline treasure hunt

answered Oct 10, 2018 at 18:14

1 vote

Accepted

AES-ECB Reverse attack CTF

answered Feb 15, 2021 at 22:15

1 vote

Rolling Hash function over untrusted data: how to preserve statistical splitting properties?

answered Apr 26, 2021 at 7:33

1 vote

Commitment scheme for a possible unordered growing collection of elements

answered Jun 14, 2021 at 5:05

1 vote

Proving the possession of signature in zero-knowledge

answered Apr 25 at 1:56

1 vote

Accepted

Double Ratchet Algorithm: Active Man in the Middle Attack without Root-Key or Ratchet-Key

answered Apr 27 at 18:09

1 vote

Accepted

Ensure deniability of an interactive zero knowledge proof

answered May 4 at 3:01

Stack Exchange Network

40 Answers

Theoretical Approaches to crack large files encrypted with AES

why ransomwares are still problematic?

A practical algorithm for proof of age

How can I generate reasonably short temporary unlock codes?

How to prevent power analysis on software level?

Secret IV MAC with weak hash function

Leaking key when adding small order point

Providing tokens for anonymous survey

Verify HMAC tag without knowing the key

Secure encryption in the presence of a keyservice

Authenticated encryption scheme for one-way radio telemetry

Securely derive multiple EC keys from master EC key and prove it

Are passkeys actually hardware keys or are they just reversibly encrypted keys secured by a hardware key?

In sha256, is it possible to use less information than the full preimage to prove that the prefix of the preimage is a certain string

Does it take brute force to find a pair of plaintext and ciphertext that each follow a certain condition, given an AES encryption key?

Would a symmetric cipher with a keylength a big as the data length be information theoretically secure?

A block cipher with independent keys for each round

What is the importance of adding round key in AES

What is a simple information authentication protocol for constrained devices?

Does the size of a file influence the randomness if used as random input?

Are there any attacks on the key exchange when the client and the server are using the same private key?

Public Key Encryption scheme with small messages among many parties

Trivial Broadcast Encryption Scheme for video conferencing how well does it handle users joining or leaving a call?

Secure offline treasure hunt

AES-ECB Reverse attack CTF

Rolling Hash function over untrusted data: how to preserve statistical splitting properties?

Commitment scheme for a possible unordered growing collection of elements

Proving the possession of signature in zero-knowledge

Double Ratchet Algorithm: Active Man in the Middle Attack without Root-Key or Ratchet-Key

Ensure deniability of an interactive zero knowledge proof