User alpominth - Cryptography Stack Exchange

alpominth

Member for 10 months
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Curious

Mar 19
Custodian

Mar 27
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Mar 27

Top tags

hash

0

Score

10

Posts

50

Posts %

keys

0

Score

8

Posts

40

Posts %

encryption

0

Score

6

Posts

30

Posts %

block-cipher

0

Score

5

Posts

25

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one-time-pad

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Score

4

Posts

20

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ctr

0

Score

3

Posts

15

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Top posts

View all questions and answers

All Questions Answers

Score Newest

4

If I encrypt a plaintext with different keys for each block, will I have the same security as a one-time pad?

Jul 2

3

If I hash different seeds with same size of hash output and XOR on plaintext, is it secure as One-time pad?

Jul 3

3

What is the post-quantum security of encryptions schemes based on transpositions?

Apr 19

2

Is there a simple formula to calculate how many inputs generate same outputs in cryptographic hash functions, being the input larger than the input?

Apr 3

2

When the input size in a PRF is larger than the output and many inputs will generate the same output, but why AES-256 in CTR mode is considered safe?

Mar 3

1

Why do the hash functions tested by SMhasher appear to be exceptionally fast?

Mar 10

1

How to estimate the collision resistance of a hash function if a secondary key is used (keyed hash function)?

Mar 17

1

Does an increase of message size increase the number of guesses to find a collision?

Mar 17

1

Is it safe or reasonable to use the key parameter in a cryptographic hash function as a counter?

Mar 18

1

In CTR block cipher mode of operation, can I reuse the nonce with another key for encrypting another plaintext if using different counters?

Mar 20