User AleksanderCH

9 votes

2 answers

2k views

How did law enforcement decrypt messages of ANOM devices?

asked Jun 9, 2021 at 15:56

18 votes

1 answer

1k views

Crypto AG (Switzerland) - Which algorithms were used and how did the backdoors work?

asked Feb 12, 2020 at 10:55

1 vote

1 answer

266 views

Are there any classical proven secure cryptographic algorithms other than OTP? [duplicate]

asked Jun 20, 2019 at 13:52

9 votes

3 answers

1k views

Can Shor's algorithm factor multi-prime numbers?

asked Apr 23, 2019 at 9:30

3 votes

2 answers

388 views

Have there been efforts to prevent length extension attacks of hashing algorithms that are based on the Merkle–Damgård construction?

asked Apr 3, 2019 at 11:33

4 votes

2 answers

561 views

When does multiple OTP encryption become insecure if new keys are permuted?

asked Mar 11, 2019 at 13:46

5 votes

1 answer

135 views

What are the uses of arbitrary length output hashes (other than OAEP)?

asked Mar 1, 2019 at 14:02

19 votes

4 answers

3k views

Are encryption algorithms with fixed-point free permutations inherently flawed?

asked Feb 20, 2019 at 15:27

19 votes

2 answers

3k views

Can neural cryptanalysis be applied to AES?

asked Feb 18, 2019 at 12:34

1 vote

1 answer

229 views

Is a hashing algorithm considered broken if a collision happens under $2^{n/2}$?

asked Feb 13, 2019 at 15:23

2 votes

2 answers

302 views

Authentication without decrypting the password?

asked Jan 25, 2019 at 17:35

10 votes

3 answers

2k views

Homomorphic encryption - Why does addition not imply multiplication?

asked Dec 29, 2018 at 13:57

2 votes

1 answer

127 views

Is there a rule of thumb for ZK protocols?

asked Dec 7, 2018 at 13:38

3 votes

1 answer

3k views

GUIDs as a salt

asked Oct 16, 2018 at 11:27

2 votes

2 answers

799 views

Optimal bit-change-probability of the avalanche effect for hashes

asked Oct 5, 2018 at 9:27

5 votes

1 answer

809 views

Is the practice of "security through obscurity" violating Kerckhoffs's second principle?

asked Sep 26, 2018 at 13:51

1 vote

1 answer

129 views

Frequency analysis secure language

asked Sep 8, 2018 at 20:32

2 votes

2 answers

256 views

Whatsapp E2EE - Why scanning the QR-code?

asked Sep 7, 2018 at 16:20

3 votes

1 answer

1k views

PRNG with a truly random seed?

asked Sep 4, 2018 at 8:38

4 votes

1 answer

254 views

Is obfuscation always reversable?

asked Jul 10, 2018 at 15:54

1 vote

2 answers

2k views

Hashing login and password?

asked May 4, 2018 at 9:19

2 votes

3 answers

1k views

Information-theoretic security [closed]

asked Apr 26, 2018 at 9:15

Stack Exchange Network

22 Questions

How did law enforcement decrypt messages of ANOM devices?

Crypto AG (Switzerland) - Which algorithms were used and how did the backdoors work?

Are there any classical proven secure cryptographic algorithms other than OTP? [duplicate]

Can Shor's algorithm factor multi-prime numbers?

Have there been efforts to prevent length extension attacks of hashing algorithms that are based on the Merkle–Damgård construction?

When does multiple OTP encryption become insecure if new keys are permuted?

What are the uses of arbitrary length output hashes (other than OAEP)?

Are encryption algorithms with fixed-point free permutations inherently flawed?

Can neural cryptanalysis be applied to AES?

Is a hashing algorithm considered broken if a collision happens under $2^{n/2}$?

Authentication without decrypting the password?

Homomorphic encryption - Why does addition not imply multiplication?

Is there a rule of thumb for ZK protocols?

GUIDs as a salt

Optimal bit-change-probability of the avalanche effect for hashes

Is the practice of "security through obscurity" violating Kerckhoffs's second principle?

Frequency analysis secure language

Whatsapp E2EE - Why scanning the QR-code?

PRNG with a truly random seed?

Is obfuscation always reversable?

Hashing login and password?

Information-theoretic security [closed]