Cryptography Stack Exchange

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CPA Security vs Multiple Message Secrecy

answered 10 mins ago Yehuda Lindell 25.5k

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1

answer

22

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Commitment scheme for a possible unordered growing collection of elements

answered 2 hours ago Richard Thiessen 761

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1

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28

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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

modified 3 hours ago Richard Thiessen 761

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3

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104

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Using zk-snarks to verify a highest bid

zero-knowledge-proofs

modified 7 hours ago Red Sun 325

1

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1

answer

98

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Security of an S-box based on modular multplicative inverse

s-boxes differential-analysis linear-cryptanalysis

answered 8 hours ago kodlu 14.2k

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1

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50

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Online AES Calculator

aes block-cipher keys cbc ecb

modified 9 hours ago Maarten Bodewes♦ 78.8k

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1

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30

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Volume of an NTRU lattice

public-key post-quantum-cryptography lattice-crypto ntru

answered 10 hours ago Mark 4,981

5

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1

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91

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RSA accumulator exclusion proof without set

rsa accumulators

modified 10 hours ago Community♦ 1

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1

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73

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Can the security of ECDSA be compromised by the chosen parameters?

elliptic-curves dsa

modified 11 hours ago kelalaka 36k

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1

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130

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Is the following non-interactive zero-knowledge set membership protocol provably secure?

protocol-design zero-knowledge-proofs provable-security finite-field cryptocurrency

modified 14 hours ago Red Sun 325

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1

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100

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

hash dsa hash-signature

modified 16 hours ago Community♦ 1

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2

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111

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How can I prove “single-use authorization” from multiple parties without revealing identity?

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80

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Notable Non-Western Cryptosystems that have been widely deployed?

standards history

modified 22 hours ago fgrieu♦ 112k

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2

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188

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Examples of Weak Cryptography being exploited in the wild by cybercriminals?

cryptanalysis attack history

modified yesterday fgrieu♦ 112k

0

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1

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86

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generate a hash and validate if subset of string belong to that hash [closed]

hash-signature

modified yesterday Community♦ 1

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0

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35

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How do you solve Textbook RSA? I'm given ct, n, and e [closed]

rsa attack

asked yesterday user92013 1

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2

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60

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How to minimize Aes Output size?

aes block-cipher modes-of-operation

answered yesterday Meir Maor 8,953

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0

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19

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how does wireguard encrypted verifies with public key

openssl chacha wireguard

asked yesterday Jakob Quicho 1

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1

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46

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symbol representation based cipher?

substitution-cipher

modified yesterday Community♦ 1

0

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0

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40

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Is OpenSSL enc using AES-256-CBC to encrypt large files safe?

encryption aes openssl

asked yesterday henderson 1

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1

answer

40

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

hash sha-256 salt

answered 2 days ago Meir Maor 8,953

0

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0

answers

27

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How does the public-key generation work in the multivariate post-quantum digital signature GeMMS?

public-key signature post-quantum-cryptography multivariate-cryptography

modified 2 days ago kiamlaluno 113

2

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1

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58

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It possible to encrypt .bmp bitmap files using Stream Cipher Chacha20?

encryption stream-cipher decryption chacha

modified 2 days ago kelalaka 36k

1

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1

answer

60

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Why is this DES key considered weak?

cryptanalysis block-cipher keys des

modified 2 days ago kelalaka 36k

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0

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13

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Decrypt encryptedKey session key using - AES-128 - PKCS-1#rsaes-kem-kdf2-kw-aes128

encryption rsa aes public-key cryptanalysis

asked 2 days ago Victor 1

0

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1

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55

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Fully understanding bitcoin transcation verifying and secp256k1

cryptocurrency secp256k1

modified 2 days ago Community♦ 1

1

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1

answer

11

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Encrypted verifiable schema with hidden content

encryption public-key zero-knowledge-proofs

modified 2 days ago Ievgeni 684

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1

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66

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

hash cryptocurrency

answered 2 days ago Ievgeni 684

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1

answer

45

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A few questions about the elliptic curves functionalities

elliptic-curves

modified 2 days ago Ievgeni 684

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0

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29

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Encrypting long messages to the same length keys

encryption

asked 2 days ago AlwaysConfused 111

0

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2

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750

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Can SHA512 and SHA3-512 Make Same Collisions?

hash collision-resistance

modified 2 days ago poncho 121k

1

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0

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41

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In crc32 table look-up method, the polynomial is 0x104c11db7, why does the first two digits of the hash table not collide?

crc

modified 2 days ago user89887 11

2

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1

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398

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RSA common protocol failure exam preparation

rsa

answered 2 days ago Irad Nuriel 21

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1

answer

35

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Zero-knowledge proof of committed value

zero-knowledge-proofs commitments

answered 2 days ago Ievgeni 684

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1

answer

69

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What do the “adversary state” and “internal coins” mean?

encryption security-definition

modified 2 days ago Ievgeni 684

2

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2

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206

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VDF / RSA groups

rsa group-theory

modified Jun 11 at 5:53 fgrieu♦ 112k

4

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2

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627

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What does existential unforgeability mean in a digital signature scheme?

signature provable-security

modified Jun 11 at 5:40 fgrieu♦ 112k

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53

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Proof of theoritical security of Shamir's secret sharing

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0

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24

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Securing a local database

encryption database

asked Jun 10 at 20:54 F4T4liS 11

9

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2

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2k

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How did law enforcement decrypt messages of ANOM devices?

0

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1

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40

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AES-GCM can IV be stored alongside in DB?

aes gcm

answered Jun 10 at 15:39 A. Hersean 710

2

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2

answers

53

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Why is a Feistel Network invertible?

des feistel-network

answered Jun 10 at 15:20 jjj 186

1

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1

answer

91

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What are the algebraic normal forms for each bit of $z$, where $z = (x \oplus y) \oplus ((x \wedge y) \ll 1)$ (a non-linear operation in NORX)?

implementation

answered Jun 10 at 13:24 Fractalice 2,128

2

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1

answer

28

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The error distribution in LWE

lattice-crypto lwe ring-lwe

answered Jun 10 at 12:42 Chris Peikert 4,945

4

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1

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276

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Differential privacy per record

differential-privacy

modified Jun 10 at 12:35 A. Hersean 710

0

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1

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19

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Simple question about BGV scheme

homomorphic-encryption number-theory

answered Jun 10 at 9:38 Tjerand Silde 96

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0

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56

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Adding liquidity to my token pool [closed]

cryptocurrency

asked Jun 10 at 4:45 joan afunay 1

1

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1

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63

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Why is factorial used in Pollard's $p - 1$ algorithm?

factoring number-theory pki

modified Jun 10 at 4:16 SSA 430

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