Cryptography

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Awarded 6379 times.
Does the following protocol of secure a matrix satisfy one-time-pad?
Awarded 6 hours ago
Why is SKEYSEED derived using the nonce as a key?
Awarded 2 days ago
How Does Prime Factorization Break ECDSA?
Awarded 2 days ago
Mapping the hash of message to a point of elliptic curve for signature
Awarded Sep 16 at 17:15
How do I calculate Base64 conversion rate?
Awarded Sep 14 at 22:43
When is a cryptosystem or its algorithm (like RSA) considered efficient?
Awarded Sep 14 at 13:36
DH Elliptic Curves: Why choose a fixed base point?
Awarded Sep 14 at 5:57
Can you use repeating numbers like $\pi$, and $e$, as the Key to OTP ciphers?
Awarded Sep 13 at 22:07
Can one extract a private key from a series of carefully constructed signed messages?
Awarded Sep 13 at 17:10
Is it acceptable to use a HMAC-SHA256 hash as a secp256k1 private key?
Awarded Sep 12 at 14:06
On The Next Bit Test
Awarded Sep 12 at 11:07
Which encryption algorithm is sensitive to an attacker having access to it?
Awarded Sep 11 at 11:32
End to end encrypted web chat app with stored messages in database
Awarded Sep 10 at 19:11
How to calculate time needed for decryption of 64-bit key
Awarded Sep 9 at 22:16
Is it possible to have perfectly secure public-key cryptography with oracles?
Awarded Sep 7 at 23:02
What does the $e$ operation mean in cryptography research papers?
Awarded Sep 7 at 12:27
In RSA, why would we ever want to find the values of p and q if we already know phi(n)?
Awarded Sep 6 at 0:50
Is RSA secure enough to protect bitcoin private keys? [duplicate]
Awarded Sep 4 at 21:41
Find first two blocks of plaintext given a final plaintext block, the IV and ciphertext for CBC?
Awarded Sep 4 at 16:10
Why is an RSA public key BITWRAP-ed in ASN.1 DER encoding?
Awarded Sep 4 at 12:18
Avoiding collisions by combining MD5 and SHA-2
Awarded Sep 4 at 8:32
How to add ciphered numbers under benaloh's scheme?
Awarded Sep 3 at 1:55
When attacking keyed algorithms, how is it known when the output is correct?
Awarded Sep 1 at 8:45
How small is negligible?
Awarded Aug 31 at 17:25
Encryption using blinded key
Awarded Aug 31 at 14:56
How to encrypt a string and decrypt a string but public can never figure out how to encrypt/decrypt a string
Awarded Aug 31 at 7:18
Comparisons in zero-knowledge proofs
Awarded Aug 27 at 21:58
Safe primes and subgroups
Awarded Aug 27 at 12:30
Is this permutation secure?
Awarded Aug 27 at 10:52
Good layperson analogy for password and encryption keys
Awarded Aug 27 at 7:32
Multiplicative inverse in ${GF}(2^4)$
Awarded Aug 26 at 15:05
Problems with calculating inverse of finite field $GF(2^8)$ of AES
Awarded Aug 25 at 19:34
Ring-LWE in other fields
Awarded Aug 24 at 11:50
Vernam cipher trouble
Awarded Aug 24 at 9:41
Diffie-Hellman Private Key Size
Awarded Aug 23 at 20:17
Do all AEAD implementations use symmetric key ciphers in practice?
Awarded Aug 23 at 17:45
Convert homomorphically encrypted decimal number to homomorphically encrypted binary number
Awarded Aug 23 at 8:27
HMAC SHA256 - fixed vs dynamic key - security and collision impacts
Awarded Aug 23 at 8:02
Is it absurd to estimate entropy from a sample?
Awarded Aug 22 at 23:56
How is it possible that these two encryption functions yield the same result?
Awarded Aug 22 at 16:41
Is the one-more discrete log problem hard in the Generic Group Model?
Awarded Aug 22 at 15:47
Get the parameters of an elliptic curve's equation
Awarded Aug 21 at 14:40
Why does dragonfly key exchange need hunting and pecking?
Awarded Aug 21 at 8:33
Creating a private cryptocurrency without trusted setup
Awarded Aug 20 at 16:02
How are points on an elliptic curve discretized?
Awarded Aug 19 at 22:30
Proving that RSA encryption function with non-square free modulus is not a permutation
Awarded Aug 19 at 14:55
OpenSSL aes-128-cfb does not produce expected size
Awarded Aug 17 at 16:32
Enigma - How many possibilities does the plugboard have?
Awarded Aug 17 at 15:04
Cracking RSA with small plaintext
Awarded Aug 16 at 15:12
Why don't most encryption algorithms use perfect secrecy?
Awarded Aug 16 at 1:05
Do the session keys have the same value on both sides during TLS?
Awarded Aug 15 at 15:43
How do I safely encrypt a file for transport and storage?
Awarded Aug 15 at 15:35
FIPS 140-2 compliance and RSA encryption
Awarded Aug 15 at 8:47
are outputs of sha256 independent when padded with different seed each time, in other words, when inputs can be somewhat related
Awarded Aug 14 at 16:36
Strangers cryptographically agree on secure video channel using information over insecure channel
Awarded Aug 13 at 4:11
Safety of encryption when knowing part of the content [duplicate]
Awarded Aug 12 at 15:55
How to calculate size of a codebook lookup table to break block cipher?
Awarded Aug 12 at 10:46
Quadruple DES vs AES-128 security
Awarded Aug 11 at 21:07
Why are ed25519 keys not recommended for encryption?
Awarded Aug 11 at 15:40
Which is the simplest cryptographic algorithm which is close to commercial-level security?
Awarded Aug 11 at 10:42
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