User Richard R. Matthews

39

88

votes

1

answer

128k

views

What is the difference between .pem, .csr, .key and .crt and other such file extensions?

Aug 11 at 7:31 Maarten Bodewes♦ 76.5k

8

38

votes

1

answer

15k

views

Why use argon2i or argon2d if argon2id exists?

hash side-channel-attack password-hashing argon2

Sep 3 '19 at 21:17 kelalaka 29.7k

12

37

votes

3

answers

8k

views

Why was AES CBC removed in TLS 1.3?

aes tls cbc modes-of-operation aes-gcm

Sep 27 at 16:39 kelalaka 29.7k

6

19

votes

1

answer

7k

views

Could we break MD5 entirely in the future?

hash md5 preimage-resistance

May 20 '18 at 21:34 Squeamish Ossifrage 42.5k

2

12

votes

2

answers

5k

views

Why is c25519 in the GPG “expert” options?

elliptic-curves pgp

Nov 6 '17 at 11:24 Community♦ 1

3

11

votes

1

answer

5k

views

argon2 vs scrypt

key-derivation scrypt argon2

Feb 28 '19 at 8:56 kelalaka 29.7k

4

10

votes

3

answers

8k

views

Looking at hash output – is Base64 encoding in any way better than HEX encoding?

hash key-derivation bcrypt scrypt argon2

Apr 12 at 19:24 BeloumiX 703

3

8

votes

2

answers

2k

views

What exactly does s2k do in gpg

hash symmetric key-derivation pgp s2k

Sep 7 '19 at 10:29 forest 11k

3

7

votes

2

answers

13k

views

Why is there the option to use NIST P-256 in gnupg?

elliptic-curves pgp

Sep 10 '19 at 19:00 gegemos 9

2

7

votes

2

answers

4k

views

Whats the deal with argon2?

hash password-hashing argon2

Mar 21 '17 at 18:36 Community♦ 1

1

6

votes

1

answer

3k

views

Questions about the argon2 options

hash key-derivation argon2

Jan 29 '19 at 1:24 BinaryEvolved 248

5

votes

3

answers

5k

views

Is it true that Serpent and twofish are much stronger than AES ?

aes serpent twofish

Aug 8 '17 at 20:32 Hey 121

5

votes

2

answers

2k

views

Where do key generation algorithms take the randomness from?

random-number-generator randomness key-generation

Apr 25 '17 at 14:01 Gilles 'SO- stop being evil' 13.7k

2

5

votes

1

answer

12k

views

Benchmark differences between SHA-512 and bcrypt

hash bcrypt sha-512

Apr 12 '17 at 16:26 Maarten Bodewes♦ 76.5k

4

votes

2

answers

766

views

Is whirlpool vulnerable to length extension attack?

hash hmac length-extension

Oct 3 '17 at 15:48 e-sushi 16.9k

1

4

votes

3

answers

2k

views

How likely is a AES KDF bypass?

encryption aes key-derivation

Aug 3 '17 at 11:01 Community♦ 1

4

votes

1

answer

719

views

Some Questions about the Veracrypt hash functions

hash key-derivation pbkdf-2 hkdf

Jul 23 '17 at 12:54 e-sushi 16.9k

1

4

votes

2

answers

331

views

How would a side channel attack be carried out in a real life situation?

encryption aes side-channel-attack

Mar 19 '17 at 0:36 b degnan 4,452

3

votes

2

answers

1k

views

Is quantum cryptography unbreakable?

encryption cryptanalysis quantum-key-distribution

Nov 27 at 16:49 fgrieu♦ 109k

1

3

votes

1

answer

2k

views

Standard hash function of Linux

hash sha-512

Oct 10 '19 at 16:48 Patriot 1,978

1

3

votes

1

answer

2k

views

What do GnuPG sign-only keys mean?

dsa pgp

Sep 26 '17 at 11:16 yyyyyyy 10.6k

3

votes

2

answers

420

views

can a weak cipher in a cascade weaken the result?

encryption aes twofish

Mar 14 '17 at 14:21 SEJPM♦ 41.7k

3

votes

1

answer

87

views

When a client connects to a SSL/TLS encrypted server it hashes the certificate, right?

hash tls

Dec 23 '16 at 22:24 SEJPM♦ 41.7k

1

2

votes

4

answers

944

views

Why can't we give block ciphers larger keys?

encryption block-cipher key-size

Feb 21 '19 at 14:38 Maarten Bodewes♦ 76.5k

2

votes

1

answer

518

views

Why is using an authenticated AES mode better for in-place data protection?

encryption aes modes-of-operation

Aug 3 '17 at 19:36 mikeazo 36.5k

1

2

votes

1

answer

493

views

What is the key derivation function used in GnuPG, and how long may its input be?

key-derivation pgp

Jul 9 '17 at 19:07 Jens Erat 1,243

2

votes

1

answer

7k

views

how secure is Twofish really?

encryption block-cipher twofish

Apr 27 '17 at 1:25 Community♦ 1

1

2

votes

1

answer

160

views

Strength of block ciphers under attack [by government level attackers]

aes block-cipher side-channel-attack

Mar 20 '17 at 18:41 fgrieu♦ 109k

2

votes

2

answers

183

views

When the salt is applied before the text is salted , then what is “that”?

hash

Feb 24 '17 at 22:20 Maarten Bodewes♦ 76.5k

1

vote

1

answer

121

views

For the theoretic scenario of a brute force attack, how would you know if you succeeded?

aes keys brute-force-attack

Aug 30 at 12:42 Community♦ 1

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44 Questions

What is the difference between .pem, .csr, .key and .crt and other such file extensions?

Why use argon2i or argon2d if argon2id exists?

Why was AES CBC removed in TLS 1.3?

Could we break MD5 entirely in the future?

Why is c25519 in the GPG “expert” options?

argon2 vs scrypt

Looking at hash output – is Base64 encoding in any way better than HEX encoding?

What exactly does s2k do in gpg

Why is there the option to use NIST P-256 in gnupg?

Whats the deal with argon2?

Questions about the argon2 options

Is it true that Serpent and twofish are much stronger than AES ?

Where do key generation algorithms take the randomness from?

Benchmark differences between SHA-512 and bcrypt

Is whirlpool vulnerable to length extension attack?

How likely is a AES KDF bypass?

Some Questions about the Veracrypt hash functions

How would a side channel attack be carried out in a real life situation?

Is quantum cryptography unbreakable?

Standard hash function of Linux

What do GnuPG sign-only keys mean?

can a weak cipher in a cascade weaken the result?

When a client connects to a SSL/TLS encrypted server it hashes the certificate, right?

Why can't we give block ciphers larger keys?

Why is using an authenticated AES mode better for in-place data protection?

What is the key derivation function used in GnuPG, and how long may its input be?

how secure is Twofish really?

Strength of block ciphers under attack [by government level attackers]

When the salt is applied before the text is salted , then what is “that”?

For the theoretic scenario of a brute force attack, how would you know if you succeeded?