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4

votes

0

answers

32

views

Is it possible to construct a hash-based public key encryption scheme?

hash public-key

asked 8 hours ago Calmarius 175

0

votes

0

answers

25

views

Could this Method be Used to Create a highly Compressed Alternative to Merkle Proofs?

hash hash-tree

asked yesterday mczarnek 33

-1

votes

1

answer

800

views

20 bytes random string hashed with unsalted bcrypt or scrypt?

hash passwords bcrypt scrypt

modified 2 days ago Patriot 1,102

3

votes

0

answers

39

views

Hash multiset to point on elliptic curve where $A = 0$

hash elliptic-curves collision-resistance encoding birthday-attack

modified 2 days ago kelalaka 9,800

20

votes

3

answers

2k

views

Proving knowledge of a preimage of a hash without disclosing it?

hash zero-knowledge-proofs

modified Aug 16 at 9:42 real-or-random 126

4

votes

1

answer

710

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MD5 - Chosen Prefix Collision Attack

hash collision-resistance md5

modified Aug 15 at 18:39 b0fh 103

5

votes

1

answer

55

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Second preimage attack complexity when the digest is malleable

hash 2nd-preimage-resistance

modified Aug 15 at 14:26 Patriot 1,102

3

votes

1

answer

86

views

Is it feasible to find n hashes that sum up to a given hash?

hash collision-resistance

modified Aug 15 at 7:06 forest 7,768

1

vote

2

answers

50

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How many hash collision will exist where the digest is a pre-image?

hash collision-resistance

modified Aug 14 at 21:16 Aleph 1,381

17

votes

1

answer

3k

views

If a hash function $H$ is collision resistant, is it true that $H(x)\neq H(x')$ for all messages $x, x'$ with $x \neq x'$?

hash collision-resistance

modified Aug 14 at 20:46 yyyyyyy 9,934

8

votes

1

answer

121

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When to use Argon2i vs Argon2d vs Argon2id?

encryption hash password-hashing password-based-encryption argon2

modified Aug 13 at 20:16 forest 7,768

2

votes

1

answer

70

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Why there isn't a consistent key transform function of HMAC?

hash keys hmac mac

modified Aug 12 at 21:03 Community♦ 1

11

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4

answers

1k

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Why is SHA-512 limited to an input of $2^{128}$ bits?

hash sha-512

modified Aug 12 at 20:31 kelalaka 9,800

17

votes

1

answer

3k

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What are the consequences of removing a single byte from a sha256 hash?

hash collision-resistance sha-256 preimage-resistance

modified Aug 12 at 20:11 kelalaka 9,800

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