Student Badge - Cryptography Stack Exchange

oct 3 '11 at 14:31

Signature scheme with two private keys, neither derivable from the other — David Schwartz 2,647413

oct 3 '11 at 14:16

Using a mono-alphabetic substitution cipher with a different language per word — Scott 284

oct 3 '11 at 4:25

Cracking Pre-Paid Cards — Ahmed Saleh 1314

sep 29 '11 at 13:54

Where can i get the info to implement AES? — Dennis Hayden 282

sep 29 '11 at 12:13

Google is using RC4, but isn't RC4 considered unsafe? — jonasl 17615

sep 29 '11 at 5:18

Can ECDSA signatures be safely made “deterministic”? — ByteCoin 22724

sep 28 '11 at 19:33

What is wrong with using SHA1 in digital signatures? Why is a robust hash function needed? — pcunite 1483

sep 28 '11 at 17:52

How does HOTP keep in sync? — mrwooster 1333

sep 28 '11 at 17:37

How to enhance randomness of AES? — Roberto Aloi 1284

sep 28 '11 at 16:57

Why can't Diffie-Hellman be used for signing? — Jeff Ferland 17516

sep 28 '11 at 11:16

How exactly would someone attempt to analyse ciphertext produced by popular encryption products such as Truecrypt/PGP? — Andrew 1174

sep 25 '11 at 23:43

Secp256k1 test examples — ThePiachu 39717

sep 25 '11 at 14:40

In RSA, do I calculate d from e or e from d? — yydl 21925

sep 25 '11 at 14:30

Is the last step of an iterated cryptographic hash still as resistant to preimage attacks as the original hash? — aSteve 1162

sep 25 '11 at 7:03

Hashing or encrypting twice to increase security? — maaku 613

sep 24 '11 at 23:06

(post deleted or otherwise unavailable) — YSY 1162

sep 24 '11 at 20:45

Webapp password storage: Salting a hash vs multiple hashes? — goober 1164

sep 24 '11 at 12:32

How to fairly select a random number for a game without trusting a third party? — billpg 20517

sep 23 '11 at 21:38

Is there a simple hash function that one can compute without a computer? — FUZxxl 1686

sep 23 '11 at 14:26

Public key generation in homomorphic encryption schemes — Andrei Petrenko 1315

sep 23 '11 at 6:14

How long does it take to crack DES and AES? — huyichen 22028

sep 21 '11 at 23:46

How to attack a classical cipher using known partial plaintext? — Jake 261

sep 21 '11 at 15:00

How should one implement a delegated shared trust protocol? — Gary Rowe 1018

sep 20 '11 at 19:44

Changing algorithms during encryption — warren 1285

sep 20 '11 at 13:03

Is Convergent Encryption really secure? — Justin King 20325

sep 20 '11 at 2:22

What is the use of REAL random number generators in cryptography? — liamzebedee 1705

sep 20 '11 at 0:07

What is the best method to determine the language used in a monoalphabetic substitution cipher? — 128bits 161

sep 17 '11 at 14:17

What causes first block of AES decryption to be garbled, even with correct IV? — madczar 332

sep 15 '11 at 5:56

Analysis of Repeatedly Enciphered Plaintext using Same Algorithm / Key — Michael Petito 1585

sep 15 '11 at 3:36

Background for modular arithmetic function — S. Robert James 993

sep 12 '11 at 5:33

Encrypting small values with RSA private key — joe 462

sep 11 '11 at 15:06

Is a changing public truecrypt container secure? — Sebastian Langer 1183

sep 10 '11 at 11:56

How do I construct a 256-bit hash function from 128-bit AES? — joeforker 21915

sep 9 '11 at 7:03

What advantage does facebook's new encrypted access_token have? — chesles 1214

sep 8 '11 at 5:05

Basic explanation of Elliptic Curve Cryptography? — user5507 386210

sep 6 '11 at 21:00

(post deleted or otherwise unavailable) — Tyler Gillies 1173

sep 5 '11 at 21:48

KeeLoq showing that decryption is indeed the inverse of encryption — Azooo 1453

sep 5 '11 at 17:47

SHA1 usage for passwords, alternatives and advantages? — Nick Rosencrantz 1285

sep 5 '11 at 15:47

Does NTRU decrypt correctly now? — Jack Schmidt 1736

sep 5 '11 at 14:46

What is the most practical fully homomorphic cryptosystem? — mikeazo♦ 7,6251737

sep 5 '11 at 5:09

Is modern encryption needlessly complicated? — Ozzah 34435

sep 4 '11 at 10:02

ANSI X9.9 Cryptography Standards — Kamyar 1135

sep 2 '11 at 10:14

Would RSA-encrypting a private key for itself constitute a vulnerability? — Tim N 1263

sep 2 '11 at 2:53

Why is public-key encryption so much less efficient than secret-key encryption? — JustinY 1535

aug 31 '11 at 23:31

Types of Cryptography for a 4-8 bit microcontroller — Jim 1656

aug 31 '11 at 16:36

Calculating the amount of zero bits to be appended to the message — Stijn 1215

aug 31 '11 at 13:36

GPG symmetric encryption and javascript — Ian Purton 1261

aug 30 '11 at 23:20

Pairing-friendly curves in small characteristic fields — Samuel Neves 1,02749

aug 28 '11 at 12:39

Looking for cryptographic secure hash algorithm(s) that produces identical root hash for differently sliced hash list — user12889 1063

aug 27 '11 at 22:37

How to practically find solutions to a discrete logarithm? — asd 493

aug 27 '11 at 20:02

Does MD5 generate 128 independent bits? — TurfKids 261

aug 27 '11 at 18:07

Are there reference implementations of ECQV implicit certificates? — Yann Ramin 1084

aug 26 '11 at 16:19

What place do prime numbers have in cryptography? — Xeoncross 1845

aug 26 '11 at 12:29

Authenticating data generated by a particular build of an open source program — Ants 1213

aug 25 '11 at 12:03

Could one prevent double spending in decentralized digital currencies (like Bitcoin) without all transactions being public? — Artem Kaznatcheev 1866

aug 24 '11 at 16:27

Can you create a strong blockcipher with small blocksize, given a strong blockcipher of conventional blocksize? — Fixee 877214

aug 24 '11 at 4:40

Is it safe to encrypt a public key alongside a message with AES? — shino 1433

aug 22 '11 at 19:16

Is digest=HASH(HASH(a)+HASH(b)) equivalent to publishing two digests? — gavinandresen 1535

aug 19 '11 at 21:40

Any good file format alternative to PGP for encrypting data at rest? — Jeff Moser 1537

aug 19 '11 at 18:05

What is sent on the initial communication with Kerberos? — Lucas Kauffman 1316

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