User rath

10 votes

Why crypto hash functions must be collision resistant and how to find resistant?

answered May 31, 2013 at 11:56

10 votes

Accepted

AES 256 Encryption - Is it really easy to decrypt if you have the key?

answered Jul 17, 2013 at 11:08

6 votes

Digital identification using steganography, can it be broken?

answered Dec 25, 2013 at 0:21

6 votes

AES: Is it safe to encrypt same cleartext with same key but with million diferent IV?

answered Jan 19, 2014 at 3:18

6 votes

How vulnerable is the C rand() in public cryptography protocols?

answered Apr 18, 2014 at 21:51

5 votes

Accepted

Toy encryption system that provides "hints"

answered Jul 23, 2013 at 3:46

5 votes

Accepted

How to decode an OTP message?

answered Sep 23, 2013 at 23:13

5 votes

Export from US of crypto software with key-size > 56 bits still needs permission?

answered Mar 18, 2013 at 3:09

4 votes

Can we use numbers as a pad in the Vernam cipher - why or why not?

answered Sep 12, 2014 at 7:27

3 votes

Generating a number using SHA512 that users can later verify (once I publish secret seed)

answered Apr 1, 2014 at 9:00

3 votes

Key Exchange and anonymity issue

answered Mar 19, 2013 at 1:10

3 votes

How does the rand() function in C work?

answered Mar 20, 2013 at 18:50

3 votes

Accepted

In which disciplinary category can cryptography be put?

answered Mar 22, 2013 at 8:29

3 votes

Are there Cryptography certifications variants of CISSP?

answered Jul 2, 2013 at 19:51

3 votes

Accepted

Lamport-Diffie + attempting to invert OWF

answered Jul 4, 2013 at 14:52

3 votes

Snowden Challenge II: Can we solve Snowden challenge quantumly?

answered Jul 7, 2013 at 0:11

3 votes

Pseudorandom functions

answered Jul 8, 2013 at 19:16

3 votes

Accepted

How to choose keys for a block cipher?

answered Sep 18, 2013 at 12:03

3 votes

Accepted

Rock-paper-scissors over network, how to protect from cheating server?

answered Mar 22, 2014 at 5:06

2 votes

Do we need symmetric cryptosystems?

answered Mar 27, 2014 at 6:11

2 votes

Allowing the user to choose the hashing formula at the registration

answered Aug 8, 2013 at 15:38

2 votes

Definition and meaning of "semantic security"

answered Jul 4, 2013 at 0:37

2 votes

Is Base64(SHA1(GUID)) still unique like the original GUID?

answered May 17, 2013 at 20:37

2 votes

Could a very long password theoretically eliminate the need for a slow hash?

answered Mar 21, 2013 at 3:26

2 votes

Where to store the private key and the public key in a communication protocol

answered Mar 19, 2013 at 9:19

2 votes

Accepted

About using mistakes as part of a code

answered May 2, 2014 at 6:16

1 vote

Is the private key static or variable key in the elgamal algorithm?

answered May 18, 2014 at 22:29

1 vote

Accepted

Is there need for message authentication if a public key is transmitted and then used to encrypt a symmetric key?

answered Mar 14, 2014 at 6:31

1 vote

Pen-and-paper one-way function for externally-anonymous survey

answered May 29, 2013 at 23:19

1 vote

Distributing blocks with validation and non-dependant list generation

answered Jun 5, 2013 at 3:13

Stack Exchange Network

41 Answers

Why crypto hash functions must be collision resistant and how to find resistant?

AES 256 Encryption - Is it really easy to decrypt if you have the key?

Digital identification using steganography, can it be broken?

AES: Is it safe to encrypt same cleartext with same key but with million diferent IV?

How vulnerable is the C rand() in public cryptography protocols?

Toy encryption system that provides "hints"

How to decode an OTP message?

Export from US of crypto software with key-size > 56 bits still needs permission?

Can we use numbers as a pad in the Vernam cipher - why or why not?

Generating a number using SHA512 that users can later verify (once I publish secret seed)

Key Exchange and anonymity issue

How does the rand() function in C work?

In which disciplinary category can cryptography be put?

Are there Cryptography certifications variants of CISSP?

Lamport-Diffie + attempting to invert OWF

Snowden Challenge II: Can we solve Snowden challenge quantumly?

Pseudorandom functions

How to choose keys for a block cipher?

Rock-paper-scissors over network, how to protect from cheating server?

Do we need symmetric cryptosystems?

Allowing the user to choose the hashing formula at the registration

Definition and meaning of "semantic security"

Is Base64(SHA1(GUID)) still unique like the original GUID?

Could a very long password theoretically eliminate the need for a slow hash?

Where to store the private key and the public key in a communication protocol

About using mistakes as part of a code

Is the private key static or variable key in the elgamal algorithm?

Is there need for message authentication if a public key is transmitted and then used to encrypt a symmetric key?

Pen-and-paper one-way function for externally-anonymous survey

Distributing blocks with validation and non-dependant list generation