User Maarten Bodewes

10 votes

How to measure Cycles per Byte of an Algorithm?

answered Oct 30, 2016 at 12:13

10 votes

What encryption should I use: Blowfish, Twofish, or Threefish?

answered Dec 21, 2016 at 18:44

10 votes

Accepted

Is using RSA with SHA-1 considered as secure as HMAC-SHA-1?

answered Nov 13, 2019 at 11:40

10 votes

Why aren't hash values for "nothing" (empty) defined as all zeros?

answered Aug 30, 2018 at 4:05

10 votes

Accepted

What is the recommended minimum key length for ECDSA signature

answered Dec 17, 2018 at 18:02

10 votes

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Are there key-derivation functions that are safe to use in parallel on the same secret?

answered Jun 23, 2016 at 12:41

10 votes

mode of operation in cryptography

answered Apr 27, 2016 at 20:19

9 votes

Accepted

Is it usual for a signed message to contain the public key of the signer?

answered Nov 4, 2015 at 10:53

9 votes

Why isn't CTR mode (counter mode) used more often?

answered Jan 27, 2015 at 23:57

9 votes

Should I use ECB or CBC encryption mode for my block cipher?

answered Apr 8, 2015 at 13:47

9 votes

Accepted

Why should CAST5 and 3DES not be used for encrypting files over 4GB?

answered Sep 29, 2014 at 16:25

9 votes

Why is the IV passed in the clear when it can be easily encrypted?

answered Apr 5, 2012 at 1:07

9 votes

PBKDF2WithHmacSHA512 Vs. PBKDF2WithHmacSHA1?

answered Oct 13, 2013 at 22:45

9 votes

Accepted

ECB vs. CBC, I've seen the pictures, but what's the actual strength difference?

answered Apr 8, 2017 at 22:33

9 votes

What is the relation between x y and r s in an ECDSA signature?

answered Aug 8, 2017 at 17:15

9 votes

I can divide a very large integer - did I discover anything?

answered Jan 1, 2017 at 16:45

9 votes

Accepted

Useful additional data to employ in GCM

answered Dec 6, 2016 at 20:25

9 votes

AES and ECDH key

answered Aug 1, 2018 at 22:05

9 votes

Accepted

When do I need to use CBC and HMAC?

answered Aug 13, 2018 at 17:04

9 votes

Is a PRG more costly than AES or any other encryption standard?

answered Oct 16, 2018 at 20:37

9 votes

Accepted

Is there a point to having a large IV in AES

answered Jun 26, 2020 at 8:00

9 votes

Can an AI really generate random numbers?

answered Apr 24 at 13:33

9 votes

Time taken for a brute force attack on a key size of 64-bits

answered Apr 15, 2016 at 9:38

9 votes

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Do I need to use a MAC with asymmetric encryption?

answered Apr 6, 2016 at 11:54

9 votes

Accepted

Why is it a bad idea to use a UTF-8 derived symmetric key?

answered Mar 31, 2016 at 22:54

9 votes

Is there an AES identity key?

answered Feb 23, 2016 at 14:38

9 votes

Accepted

How is it possible that these two encryption functions yield the same result?

answered Aug 22, 2020 at 16:10

9 votes

Is CTR more secure than CBC?

answered Dec 19, 2020 at 13:26

8 votes

Accepted

Does complicating a flawed algorithm make it secure?

answered Nov 15, 2015 at 12:21

8 votes

Accepted

How to derive a symmetric key from ECDH shared secret?

answered Sep 4, 2015 at 9:10

Stack Exchange Network

1,949 Answers

How to measure Cycles per Byte of an Algorithm?

What encryption should I use: Blowfish, Twofish, or Threefish?

Is using RSA with SHA-1 considered as secure as HMAC-SHA-1?

Why aren't hash values for "nothing" (empty) defined as all zeros?

What is the recommended minimum key length for ECDSA signature

Are there key-derivation functions that are safe to use in parallel on the same secret?

mode of operation in cryptography

Is it usual for a signed message to contain the public key of the signer?

Why isn't CTR mode (counter mode) used more often?

Should I use ECB or CBC encryption mode for my block cipher?

Why should CAST5 and 3DES not be used for encrypting files over 4GB?

Why is the IV passed in the clear when it can be easily encrypted?

PBKDF2WithHmacSHA512 Vs. PBKDF2WithHmacSHA1?

ECB vs. CBC, I've seen the pictures, but what's the actual strength difference?

What is the relation between x y and r s in an ECDSA signature?

I can divide a very large integer - did I discover anything?

Useful additional data to employ in GCM

AES and ECDH key

When do I need to use CBC and HMAC?

Is a PRG more costly than AES or any other encryption standard?

Is there a point to having a large IV in AES

Can an AI really generate random numbers?

Time taken for a brute force attack on a key size of 64-bits

Do I need to use a MAC with asymmetric encryption?

Why is it a bad idea to use a UTF-8 derived symmetric key?

Is there an AES identity key?

How is it possible that these two encryption functions yield the same result?

Is CTR more secure than CBC?

Does complicating a flawed algorithm make it secure?

How to derive a symmetric key from ECDH shared secret?