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Roots in modulo field

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Joe

492 bronze badges

Is there any advantage on encrypting the CMAC together with the message?

Awarded 19 hours ago

RubenLaguna

1537 bronze badges

Can you please explain weak keys of the following 2-round DES?

Awarded 22 hours ago

anonymous

333 bronze badges

Deriving 256-bit key from PBKDF2-SHA1

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Ralph P

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What are the drawbacks of "lightweight crypto"?

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Timur Timak

1256 bronze badges

Find some hash function with deliberate collisions

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leonbloy

1314 bronze badges

How to calculate entropy of output of a PRNG

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Mitun Talukder

575 bronze badges

Does OpenSSL apply ASN1 encoding to the hash before signing using ECDSA?

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MichalD

1133 bronze badges

How can we reverse Elliptic Curves after solving the DLP problem?

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UnpluggedTrio

492 bronze badges

Is including the key as AAD actually dangerous?

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SEJPM

45.2k7 gold badges94 silver badges199 bronze badges

libsodium stream encryption [closed]

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neevek

1135 bronze badges

Would this prevent FNV1a 32 bit hash collision?

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Daniel

255 bronze badges

Fast cryptographic hash function for short inputs

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d1v

615 bronze badges

Calculating minimum number of messages hashed a 50% probability of a collision (Birthday Paradox)

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user93353

2,1402 gold badges21 silver badges37 bronze badges

PKCS#7 CMS - Message digest calculation process

Awarded Feb 1 at 16:48

Lazarus

333 bronze badges

What is customizable in ECDSA signature and verification?

Awarded Feb 1 at 14:05

croraf

2691 gold badge4 silver badges12 bronze badges

RSASSA-PSS in TLS 1.2

Awarded Jan 31 at 21:48

phips

535 bronze badges

Merkle trees instead of the Sponge or the Merkle-Damgård constructions for the design of cryptorgraphic hash functions

Awarded Jan 31 at 17:50

Rukako

1351 silver badge9 bronze badges

If you XOR a random input with a biased input, the output is random - why?

Awarded Jan 31 at 16:27

john dddd

233 bronze badges

Is this a PRF? Fk(x) = G(k⊕x) where G is a PRG

Awarded Jan 31 at 10:35

David Peled

1436 bronze badges

AES-128 + HMAC-SHA-256 but HMAC truncated

Awarded Jan 31 at 8:10

user40602

4773 silver badges12 bronze badges

Is AES GCM with PBKDF2 100k iterations still ok as of 2022?

Awarded Jan 30 at 3:51

Basj

5333 silver badges21 bronze badges

Do all AEAD implementations use symmetric key ciphers in practice?

Awarded Jan 29 at 23:41

Les Hazlewood

1236 bronze badges

Is there any weak message for an ECDSA signature?

Awarded Jan 29 at 12:25

SDL

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For public-key encryption, why does COA resistance imply CPA resistance?

Awarded Jan 28 at 13:15

Bobby S

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What's the preferable encryption for large data and files in terms of speed and security other than AES?

Awarded Jan 28 at 0:57

Ilkay Solotov

133 bronze badges

Why does "2xAES-256" provide "99.99%" security strength whereas "1xAES-128" provides "40%"? [closed]

Awarded Jan 27 at 23:32

SEJPM

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SHA-1 requires utf-8 and reordering of bytes

Awarded Jan 26 at 14:47

Jovan

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Always set the IV to 0 randomized CBC

Awarded Jan 26 at 13:55

Amirhossein

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How many time does a SHA-1 computation require on modern CPU/GPU? [closed]

Awarded Jan 26 at 7:35

Shalec

4072 silver badges10 bronze badges

Are there problems with short pseudo-random mid-square-like sequences?

Awarded Jan 25 at 20:56

bobuhito

3151 silver badge9 bronze badges

How to choose between AES256-GCM, XSalsa20Poly1305 and XChaCha20Poly1305?

Awarded Jan 25 at 16:26

Hern

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Is this scheme CPA or/and EAV secure

Awarded Jan 25 at 14:36

user84987

113 bronze badges

How to decrypt a file using RSA and just a public.pem file?

Awarded Jan 25 at 5:41

pee2pee

1178 bronze badges

Convert affine to projective coordinates and vice versa in ECC?

Awarded Jan 24 at 18:16

mtl Kh

35 bronze badges

Performance comparison between ECDSA and BLS signature schemes

Awarded Jan 24 at 16:47

Ihtesham Haider

714 bronze badges

Is MD5 neither encryption nor encoding? [duplicate]

Awarded Jan 24 at 12:31

Swapnil

1096 bronze badges

XOR LFSR and all zero state

Awarded Jan 24 at 11:42

user93353

2,1402 gold badges21 silver badges37 bronze badges

Message-Recovery variant of Ed25519 signature?

Awarded Jan 23 at 21:56

fgrieu♦

131k11 gold badges282 silver badges544 bronze badges

Prove that the $x^8+x^4+x^3+x+1$ is irreducible over $\mathbb{Z}_2[x]$

Awarded Jan 22 at 18:49

poojan pujara

434 bronze badges

Linear feedback shift register combination, secure?

Awarded Jan 21 at 17:16

Paltoquet

1134 bronze badges

How does the SSH server know the length of data encrypted?

Awarded Jan 21 at 8:46

Anon

1515 bronze badges

Fast attack on approximate GCD problem?

Awarded Jan 20 at 19:08

SEJPM

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Why use base64 or hexadecimals for ciphertext?

Awarded Jan 19 at 21:12

Felipe Rodriguez Fonte

33 bronze badges

Introduction to LLL algorithm applied to linear modular inequalities

Awarded Jan 19 at 17:11

fgrieu♦

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Can Grover's algorithm be parallelized?

Awarded Jan 18 at 21:36

CodesInChaos

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What is the significance of IV in stream ciphers like Trivium?

Awarded Jan 18 at 14:05

Ans

735 bronze badges

Stuck on an affine cipher exercise

Awarded Jan 18 at 10:36

Network

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Blake2: truncate 512-bit hash is safer than 256-bit by Config?

Awarded Jan 17 at 22:51

David BS

2072 silver badges6 bronze badges

What are the elements of the multiplicative group $\mathbb Z^{*}_{15}$?

Awarded Jan 17 at 21:56

Jackson Wicktora

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Pseudorandom function of different keys

Awarded Jan 17 at 15:34

user153882

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Attacking historical ciphers methodology

Awarded Jan 16 at 22:08

Adam

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One Time Pad Alphabet Size

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dandavis

1999 bronze badges

Kyber and Dilithium explained to primary school students?

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Flan1335

1711 silver badge3 bronze badges

Can you derive ed25519 keys from secp256k1?

Awarded Jan 16 at 13:26

vidi

1354 bronze badges

regular expression matching on encrypted data using secure multiparty computation

Awarded Jan 16 at 8:36

sashank

6,0744 gold badges28 silver badges66 bronze badges

How many valid X25519 private keys are there?

Awarded Jan 15 at 23:15

Ben Z.

2575 bronze badges

"Order" in cryptographic terms for generators

Awarded Jan 15 at 16:46

CutestPenguin

233 bronze badges

ElGamal message signatures retrieving the secret value x

Awarded Jan 14 at 11:42

Bobby S

1,9134 gold badges22 silver badges30 bronze badges

Is the Salsa20/ChaCha20 keystream generation one-way?

Awarded Jan 13 at 21:48

K. Biermann

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