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is there any hash collision attack that is not defeated by adding a salt first?

hash collision-resistance

modified Jan 21 at 12:07 kelalaka 29.6k

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if a hash function has no known preimage attacks, does that mean there are no known attacks against using it in signatures?

hash preimage-resistance

answered Jan 21 at 0:43 Luis Casillas 13.4k

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Mechanisms for masking identifying unique IDs with non-identifying unique IDs to protect privacy?

hash data-privacy database anonymity

modified Jan 21 at 0:08 Dinosaur Reporter 1

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TLS 1.3 clarification needed on hello_hash and subsequent hashes

hash tls sha-256

modified Jan 20 at 22:58 Maarten Bodewes♦ 76.4k

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Attack MD5 with limited input and partial information

hash md5 preimage-resistance

modified Jan 20 at 22:05 kelalaka 29.6k

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Can I retrieve a re-hashed (hash) value, for instance by additional hashing?

hash sha-256

modified Jan 18 at 21:56 kelalaka 29.6k

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Can the hash of the ciphertext be derived from the hash of the plaintext

encryption hash homomorphic-encryption

asked Jan 18 at 14:23 Tobias Brandt 131

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51

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How are SHACAL-2 ciphers calculated?

hash block-cipher sha-256 md5 merkle-damgaard

modified Jan 18 at 13:05 kelalaka 29.6k

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Break El Gamal for Elliptic Curves

hash elliptic-curves hash-signature elliptic-curve-generation elgamal-signature

modified Jan 15 at 16:05 Community♦ 1

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618

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Extending the size of input for SHA-2 function

hash collision-resistance sha-256 sha-2

modified Jan 14 at 21:35 kelalaka 29.6k

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Does it make any sense to hash parts of a hashing target?

hash dsa hash-signature

answered Jan 14 at 13:31 mentallurg 1,449

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132

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Create a MD5 collision on two given files with an identical prefix

hash collision-resistance md5

asked Jan 14 at 12:24 J.B. 1

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Security implications of using the low-order bits for Merkle–Damgård message length

hash padding md5 merkle-damgaard

modified Jan 13 at 0:23 forest 11k

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Does a hash function necessarily need to allow arbitrary length input?

hash terminology

answered Jan 12 at 22:57 Gilles 'SO- stop being evil' 13.7k

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