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Fooling Proof-of-Storage Protocols. What's the difference with Length-Extension attack?

hash blake2

asked 24 mins ago Nicolas R 1

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Signal Key Stretching Regarding Their Blog Post

hash passwords password-hashing argon2 signal-protocol

modified yesterday AleksanderRas 5,585

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Why do SignTool/Authenticode Message Digests not match the direct hash of the file?

hash

answered Apr 4 at 13:25 Maarten Bodewes♦ 68.8k

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Are there any hashing functions where you can perform operations on the hashes without knowing the source data?

hash

asked Apr 3 at 13:59 fadedbee 693

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Implementing ESignature and digital certificate

encryption hash rsa signature certificates

asked Apr 3 at 11:11 Thomas Dupré 1

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Safest alternative for hashing credit card numbers to use the hash as fingerprint?

hash pbkdf-2 sha-3 argon2

modified Apr 2 at 21:07 KurtWegner 23

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Anonymous location hashing

hash

answered Apr 2 at 15:42 Vadym Fedyukovych 1,567

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Can hashes be used to generate larger random numbers?

hash randomness

answered Apr 1 at 19:36 Moisés Ferreira 113

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Verify ECDSA signature without data

hash signature dsa

modified Apr 1 at 9:47 Marcel Krüger 156

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Second preimage attack complexity when the digest is malleable

hash 2nd-preimage-resistance

modified Mar 31 at 1:01 Community♦ 1

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How does re-hashing affects security strength?

hash sha-3

modified Mar 30 at 19:46 kelalaka 17.9k

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Why did the NSA create SHA?

hash nsa

answered Mar 29 at 21:39 Richie Frame 11.2k

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Are bijective polynomials of degree $2 \bmod 2^m$ efficiently inverted?

hash modular-arithmetic one-way-function bijection

answered Mar 29 at 13:24 Wolfgang Brehm 101

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Is there an efficient algorithm that allows to construct a cryptographically secure $n$-bit hash function based on two unkeyed $n$-bit permutations?

hash algorithm-design

modified Mar 28 at 23:01 Community♦ 1

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