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may 15 at 10:48
Now that quantum computers have been out for a while, has RSA been cracked? — D.W. 7,949826
may 14 at 17:53
Why is H(k||x) not a secure MAC construction? — Paŭlo Ebermann♦ 9,71021743
may 9 at 3:10
Is RSA padding needed for single recipient, one-time, unique random message? — poncho 14.6k1527
may 5 at 23:30
How can rainbow tables be used for a dictionary attack? — Antony Vennard 2,43711023
may 5 at 1:59
What are the practical difference between 256-bit, 192-bit, and 128-bit AES encryption? — Paŭlo Ebermann♦ 9,71021743
may 3 at 17:57
What is the most practical fully homomorphic cryptosystem? — D.W. 7,949826
may 2 at 13:06
what is the difference between Scrypt and PBKDF2 — Ilmari Karonen 6,291725
may 1 at 17:01
Why exactly is Blowfish faster than AES? — fgrieu 9,8391237
apr 24 at 9:35
What is the relation between RSA & Fermat's little theorem? — Antony Vennard 2,43711023
apr 22 at 6:09
How is CipherCloud doing homomorphic encryption? — Sid 28116
apr 21 at 18:49
How is CipherCloud doing homomorphic encryption? — adrenalion 18112
apr 21 at 14:28
How does the MOV attack work? — Conrado PLG 665110
apr 21 at 13:53
How is CipherCloud doing homomorphic encryption? — AdrenaLion 2012
apr 21 at 13:48
How is CipherCloud doing homomorphic encryption? — CodesInChaos 5,9541927
apr 20 at 17:01
Should I trust CipherCloud? — D.W. 7,949826
apr 9 at 22:30
Why does a broken hash function undermine an HMAC? — Henrick Hellström 2,5211311
apr 7 at 20:36
How to best obtain bit sequences from throwing normal dice? — maaartinus 30915
apr 2 at 20:33
Should we MAC-then-encrypt or encrypt-then-MAC? — Sadeq Dousti 31418
mar 15 at 8:57
Is this encryption algorithm build from MD5 secure? — fgrieu 9,8391237
mar 12 at 22:25
Is SHA-1 still practical secure under specific scenarios? — fgrieu 9,8391237
mar 12 at 10:18
Isn't the structure of a potential plaintext of a ciphertext generated by a one-time pad dispositive, cryptanalysis-wise? — mikeazo♦ 7,5851637
mar 7 at 22:22
How and why can a decryption program tell me that a key is incorrect? — Thomas 2,5791320
mar 7 at 12:12
What exactly is a negligible (and non-negligible) function? — AFS 45318
feb 27 at 10:42
Can I find two specific words with the same md5 hash? — CodesInChaos 5,9541927
feb 11 at 10:28
Is RC4 a problem for password-based authentication? — poncho 14.6k1527
feb 7 at 9:07
RSA primes vs. largest known primes — CodesInChaos 5,9541927
feb 5 at 18:42
Is Convergent Encryption really secure? — Zooko 75626
jan 31 at 10:44
What is a smart card? — fgrieu 9,8391237
jan 29 at 3:55
How to calculate an IV when I have a shared private key? — poncho 14.6k1527
jan 23 at 22:14
Is Encrypt+HMAC stronger than AEAD? — Stephen Touset 1,251215
jan 15 at 22:00
How does one attack a two-time pad (i.e. one time pad with key reuse)? — poncho 14.6k1527
jan 10 at 0:36
Does the elliptic curve (EC) cryptosystem outperform RSA and DL cryptosystems? — Thomas Pornin 19.1k13571
jan 9 at 12:19
Why do all SSH-RSA Keys begin with “AAAAB3NzaC1yc”? — dchest 487310
dec 21 at 23:17
Why is it important that phi(n) is kept a secret, in RSA? — Thomas 2,5791320
dec 16 at 16:33
Galois fields in cryptography — Ilmari Karonen 6,291725
dec 6 at 6:07
How can SSL secure a two-way communication with only one key-pair? — Charlie Martin 43125
dec 5 at 6:36
RSA with small exponents? — Jason S 371210
dec 4 at 22:26
Time Capsule cryptography? — fgrieu 9,8391237
nov 28 at 16:14
How to generate a list of unique random strings? — rossum 44213
nov 21 at 20:50
Is the CBC weakness in XML Encryption a new discovery? Are other applications vulnerable? — Paŭlo Ebermann♦ 9,71021743
nov 13 at 12:36
Generating Random Primes — B-Con 2,1641418
nov 3 at 23:11
Does RSA work for any message M? — fgrieu 9,8391237
oct 23 at 6:51
Is AES-256 weaker than 192 and 128 bit versions? — Thomas Pornin 19.1k13571
oct 19 at 0:39
Is Diffie-Hellman mathematically the same as RSA? — Paŭlo Ebermann♦ 9,71021743
oct 10 at 7:58
understanding a length extension attack — Thomas Pornin 19.1k13571
oct 6 at 10:45
Compressing EC private keys — Thomas Pornin 19.1k13571
oct 5 at 12:15
Is it safe to use file's hash as IV? — Thomas Pornin 19.1k13571
sep 25 at 18:17
Taking advantage of one-time pad key reuse? — ir01 931418
sep 21 at 8:59
Security of simple xor and s-box cipher? — Thomas Pornin 19.1k13571
sep 20 at 22:44
Are picture files “random enough” to be usable as a one-time pad? — D.W. 7,949826
sep 15 at 5:54
Why RSA can't handle numbers above 76? — Thomas 2,5791320
sep 4 at 23:56
Blum Blum Shub vs. AES-CTR or other CSPRNGs — D.W. 7,949826
sep 3 at 14:14
No SHA-1 Collision? Yet SHA1 is broken? — CodesInChaos 5,9541927
aug 31 at 17:23
Do I have to have a different salt for each password? — Ilmari Karonen 6,291725
aug 27 at 19:20
Is there a way to make RC4 (ARCFOUR) secure, or is it completely broken? — CodesInChaos 5,9541927
aug 26 at 15:14
Can CBC ciphertext be decrypted if the key is known, but the IV not? — Paŭlo Ebermann♦ 9,71021743
aug 20 at 17:52
why do we need Diffie Hellman? — CodesInChaos 5,9541927
aug 17 at 13:34
How much would it cost in U.S. dollars to brute force a 256 bit key in a year? — ir01 931418
aug 13 at 15:20
Can two different pairs of RSA key have the same modulus? — CodesInChaos 5,9541927
aug 8 at 18:08
Is there a secure cryptosystem that can be performed mentally? — Ilmari Karonen 6,291725
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