Student Badge - Cryptography Stack Exchange

nov 30 '11 at 9:18

Hash or encryption function for challenge-response protocol? — Niklas 1112

nov 30 '11 at 0:15

Software implementation of a commutative cipher? — Roy Pardee 232

nov 29 '11 at 13:12

How to distribute session keys in public key cryptography? — Lunar Mushrooms 1794

nov 28 '11 at 17:25

Where is the proof of security of Diffie's cipher? — Simon Johnson 36615

nov 28 '11 at 15:30

Why isn't the alternating step generator used more often? — William Hird 766

nov 27 '11 at 16:03

AES and perfect ciphers — sol 311

nov 26 '11 at 14:24

Verilog simulation of Data Encryption Standard — kumar 91

nov 25 '11 at 5:51

How does the wider cryptographic community view non-abelian group based cryptography? — Jeff Burdges 25216

nov 23 '11 at 20:47

How can I create a fixed length output in my hash function? — joesavage 1212

nov 23 '11 at 14:10

Security of simple xor and s-box cipher? — Polynomial 479113

nov 22 '11 at 17:30

Example of CHI Square test on Caesar Cipher? — Lunar 1353

nov 21 '11 at 22:03

Is a RSA-signature of some identifying data a safe way to implement a license key? — ispiro 1595

nov 19 '11 at 1:03

How does a chosen ciphertext attack work, with a simple example? — mixkat 1785

nov 17 '11 at 11:46

RSA-PSS salt size — Conrado PLG 665110

nov 17 '11 at 9:10

What is the proper way to use a client nonce? — Shad 1283

nov 15 '11 at 8:39

Why is elliptic curve cryptography not widely used, compared to RSA? — Vineet Menon 22027

nov 14 '11 at 19:02

Is H(k||length||x) a secure MAC construction? — Gilles 462219

nov 14 '11 at 4:57

Cipher for Product Registration? — Anti Earth 1282

nov 13 '11 at 0:12

Why is it insecure to use a randomized IV for CBC-MAC instead of an all-zero IV? — Bobby S 410110

nov 11 '11 at 15:02

Best way to reduce chance of hash collisions: Multiple hashes, or larger hash? — Theodor Kleynhans 6215

nov 10 '11 at 4:27

(post deleted or otherwise unavailable) — Mr_CryptoPrime 1715

nov 9 '11 at 10:53

Is it reasonable to assure that p-1 and q-1 aren't smooth? — Stefano Palazzo 29619

nov 9 '11 at 7:43

Encrypting and obscuring data between site/user without SSL — Jayhal 161

nov 8 '11 at 12:07

How much would it cost in U.S. dollars to brute force a 256 bit key in a year? — John Fischer 22633

nov 5 '11 at 22:53

Can CBC ciphertext be decrypted if the key is known, but the IV not? — Ben 1554

nov 3 '11 at 23:22

How does one measure the decrease in security, if any, of RC4 when mapping to a specific range of values? — Deskguy 261

nov 3 '11 at 17:52

How can I encrypt more than 64 bit with the Data Encryption Standard? — Prasanna Kumar 132

nov 1 '11 at 22:04

Is there a secret sharing scheme which allows sharing of a secret (one-out-of-n) — Hamouid 462

oct 31 '11 at 13:21

Is Blowfish strong enough for VPN encryption? — Rory Alsop 232112

oct 30 '11 at 21:10

(post deleted or otherwise unavailable) — Filip Ekberg 1012

oct 29 '11 at 23:17

If the PSK is known, is it possible to decrypt traffic from other clients in a WPA2 wlan network? — Bachi 1283

oct 29 '11 at 17:37

How can Cipher Block Chaining (CBC) in SSL be attacked? — antonpug 1413

oct 28 '11 at 16:24

Why would you expect to find a collision in a hash function after approximately $\sqrt{n}$ hashes? — Matt H 1393

oct 27 '11 at 23:28

How to deduce enigma settings given a partial plaintext? — Chris 1311

oct 27 '11 at 5:55

Does the XML Encryption flaw affect SSL/TLS? — zimdanen 1185

oct 26 '11 at 21:05

Why is H(k||x) not a secure MAC construction? — Anne Nonimus 1533

oct 25 '11 at 23:41

How can rainbow tables be used for a dictionary attack? — Mitchell Kaplan 534

oct 24 '11 at 19:38

Is there a group of prime order which could fit the CT-Computational Diffie-Hellman assumption? — oopsdude 182

oct 24 '11 at 13:52

Endless PRNG from PRNG with specific stretch? — Ricky Demer 860210

oct 22 '11 at 20:43

(post deleted or otherwise unavailable) — pepsi 1011

oct 22 '11 at 9:05

Is there a secret sharing scheme which allows delegation/re-sharing without reconstructing the original secret? — imichaelmiers 59617

oct 21 '11 at 22:58

Can one generalize the Diffie-Hellman key exchange to three or more parties? — hobeau 934

oct 21 '11 at 10:58

Is it feasible to build an index of prime factors? — Hamidam 1412

oct 20 '11 at 8:30

Deniable Encryption from simple primitives — Jason Knight 333

oct 19 '11 at 19:54

Getting the encryption method and key from the encrypted data and the raw data — CYMR0 132

oct 17 '11 at 22:05

How can I encrypt + authenticate short strings into similar short ciphertexts? — eggyal 1427

oct 17 '11 at 15:35

Is there a hash function with 2048bit output? — mykhal 1214

oct 17 '11 at 6:03

uniquely identify a symmetric key — senecaso 1834

oct 14 '11 at 10:43

AES in ECB mode weakness — jjsanchez 384

oct 13 '11 at 14:47

Key Length & Hashing — James 311

oct 12 '11 at 17:42

RIPEMD versus SHA-x, what are the main pros and cons? — Jesper Mortensen 34119

oct 10 '11 at 17:45

Is there an algorithm or hardware that can sign/verify natural time? — est 1233

oct 10 '11 at 9:19

Encrypt-then-MAC Confidentiality, Integrity and Authenticity — John Black 282

oct 10 '11 at 2:58

How do other, non-RSA algorithms, compare to the PKCS #1 standard? — makerofthings7 356112

oct 9 '11 at 20:11

Does anyone have a KAT for 3DES KO-2? — Sean B. Durkin 1234

oct 8 '11 at 18:19

Why choose an authenticated encryption mode instead of a separate MAC? — Zack 20715

oct 4 '11 at 13:53

What is the likely cause when this happens in RSA Algorithm — sashank 6701313

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

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