User Global nomad - Cryptography Stack Exchange

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	108 reputation	bio	website		visits	member for	1 year, 6 months
17 badges		location	Portland, OR		seen	Jun 1 at 6:13

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LFSR dynamic mutation

stream-cipher lfsr

feb 17 at 11:06 Paŭlo Ebermann♦ 9,884

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In the SHA hash algorithm, why is the message always padded?

hash sha1 padding

jun 1 '12 at 16:16 mikeazo♦ 7,916

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When to prefer exchanging cryptographic certificates over exchanging only public keys?

public-key rsa signature

jun 1 '12 at 1:10 Dave 111

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Safely use CryptSignAndEncryptMessage?

encryption rsa signature authenticated-encryption

may 30 '12 at 18:36 mikeazo♦ 7,916

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Why are MACs in general deterministic, whereas digital signature constructions are randomized?

signature mac ecdsa randomness dsa

may 30 '12 at 8:09 fgrieu 10.7k

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202

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Algorithm to securely exchange identities

public-key homomorphic-encryption

jun 29 '12 at 1:20 David Cary 898

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206

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Is quantum key distribution safe against MITM attacks too?

keys quantum-cryptography

may 29 '12 at 20:31 fgrieu 10.7k

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239

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Do Cryptographic Hashing Algorithms operate only on Integers?

hash algorithm-design

oct 22 at 19:46 Paŭlo Ebermann♦ 9,884

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798

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In which order are the round keys used during AES decryption?

encryption aes block-cipher

may 28 '12 at 19:26 Paŭlo Ebermann♦ 9,884

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After implementing a novel encryption algorithm, how would one go about analyzing its security or get help from others in doing so?

encryption

may 25 '12 at 20:10 poncho 15.1k

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Is the “Signed on date” of a PGP Signature Verified?

signature pgp

jun 19 '12 at 21:29 Jon Callas 905

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Is every output of a hash function possible?

hash

may 30 '12 at 19:11 fgrieu 10.7k

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190

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Is it secure to use the hash of key as the IV in AES encryption?

encryption aes initialization-vector

may 23 '12 at 9:49

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313

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What is the time complexity of the RC4 encryption & decryption algorithms?

encryption rc4 complexity

may 25 '12 at 18:28 Paŭlo Ebermann♦ 9,884

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How do I generate a session key using the Diffie Hellman algorithm?

diffie-hellman key-exchange

may 24 '12 at 14:44 Antony Vennard 2,562

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DGK Cryptosystem Encryption Speedup

public-key homomorphic-encryption

may 21 '12 at 15:01 Mihai Todor 207

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400

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Why Addition Mod 32?

algorithm-design xor twofish

jun 17 '12 at 18:21 poncho 15.1k

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360

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Can I encrypt user input in a way I can't decrypt it for a certain period of time?

encryption

may 2 '12 at 22:08 dan 58

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213

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Is there a hash algorithm that is slow to calculate but relatively fast to check?

hash one-way-function

apr 10 '12 at 1:43 B-Con 2,308

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Is AES restricted to only 64 characters for the key/password?

aes passwords key-derivation

apr 9 '12 at 14:22 Antony Vennard 2,562

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639

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What is the difference between CBC and GCM mode?

encryption modes-of-operation

apr 9 '12 at 2:42 poncho 15.1k

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315

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Crypto-Compression Algorithms?

encryption algorithm-design compression

apr 8 '12 at 19:20 ddyer 225

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600

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Why is the IV passed in the clear when it can be easily encrypted?

encryption initialization-vector

nov 29 at 21:50 owlstead 670

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Encryption algorithm that produces dummy output on incorrect passwords

encryption host-proof format-preserving deniable-encryption

jul 22 '12 at 18:51 dchest 487

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CBC - a canonical mode, even though there are streaming modes

block-cipher modes-of-operation symmetric stream-cipher

jun 6 '12 at 20:06 Paŭlo Ebermann♦ 9,884

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How big an RSA key is considered secure today?

public-key rsa key-size factorization

jul 27 at 9:34 CodesInChaos 6,165

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Why is AES resistant to known-plaintext attacks?

aes block-cipher known-plaintext-attack

oct 31 at 21:05 Community♦ 1

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What is the relation between Discrete Log, Computational Diffie-Hellman and Decisional Diffie-Hellman?

diffie-hellman discrete-logarithm

jun 11 at 16:00 Paŭlo Ebermann♦ 9,884

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How can I make my cipher show the avalanche effect?

encryption salt cipher password-based-encryption

dec 30 '11 at 14:27 Community♦ 1

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442

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Encryption scheme for social-network-like data sharing data via untrusted server?

encryption host-proof

jul 6 '12 at 20:18 David Cary 898

Global nomad

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