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In sha256, is it possible to use less information than the full preimage to prove that the prefix of the preimage is a certain string

hash sha-256

asked 14 hours ago jiedo 1

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1

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30

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Does my SHA-256 TableSalt algo give away the seed salt?

hash sha-256 salt

answered 17 hours ago Meir Maor 8,953

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62

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is it efficient if blockchain uses double Hash algorithms $H_1$ and $H_2$?

hash cryptocurrency

answered yesterday Ievgeni 684

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2

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738

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Can SHA512 and SHA3-512 Make Same Collisions?

hash collision-resistance

modified yesterday poncho 121k

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43

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Remote Attestation: when to use Checksum and when to use a Cryptographic Hash function?

hash checksum remote-data-checking

modified Jun 9 at 9:15 Lavender 111

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1

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What is the proper way to use a client nonce?

hash authentication implementation

modified Jun 9 at 8:13 Erzsike Sztercso 1

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2

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154

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Would hashing a password twice prevent naive attacks?

hash passwords password-hashing

modified Jun 4 at 23:21 Maarten Bodewes♦ 78.8k

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2

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123

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Expected Hamming distance of $a+b$ and $(a \oplus b) \oplus ((a \land b) \ll 1)$

hash

modified Jun 4 at 15:05 Samuel Neves 10.6k

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6

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4k

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Is it possible that a SHA256 hash has the same hex character over and over again?

hash sha-256 probability

modified Jun 4 at 12:15 Maarten Bodewes♦ 78.8k

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Confused about encapsulation using different types of hash functions

hash hmac

asked Jun 3 at 23:45 picotard 399

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1

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33

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Breaking merkle damgård construction that uses bitwise and?

hash collision-resistance merkle-damgaard

modified Jun 1 at 20:29 kelalaka 35.9k

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What is the padding block actually in merkle damgård?

hash padding merkle-damgaard

modified Jun 1 at 18:18 kelalaka 35.9k

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54

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Would generating the 'digital signature' of a very short message be less work if you encrypted the message instead of it's hash?

hash signature

modified Jun 1 at 5:49 fgrieu♦ 112k

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103

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Why are different private and public key generated in online brainwallets?

hash elliptic-curves sha-256

modified May 30 at 21:11 kelalaka 35.9k

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