Cryptography

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Awarded 6602 times.
End to end encrypted web chat app with stored messages in database
Awarded Sep 10 '20 at 19:11
How to calculate time needed for decryption of 64-bit key
Awarded Sep 9 '20 at 22:16
Is it possible to have perfectly secure public-key cryptography with oracles?
Awarded Sep 7 '20 at 23:02
What does the $e$ operation mean in cryptography research papers?
Awarded Sep 7 '20 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 '20 at 0:50
Is RSA secure enough to protect bitcoin private keys? [duplicate]
Awarded Sep 4 '20 at 21:41
Find first two blocks of plaintext given a final plaintext block, the IV and ciphertext for CBC?
Awarded Sep 4 '20 at 16:10
Why is an RSA public key BITWRAP-ed in ASN.1 DER encoding?
Awarded Sep 4 '20 at 12:18
Avoiding collisions by combining MD5 and SHA-2
Awarded Sep 4 '20 at 8:32
How to add ciphered numbers under benaloh's scheme?
Awarded Sep 3 '20 at 1:55
When attacking keyed algorithms, how is it known when the output is correct?
Awarded Sep 1 '20 at 8:45
How small is negligible?
Awarded Aug 31 '20 at 17:25
Encryption using blinded key
Awarded Aug 31 '20 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 '20 at 7:18
Comparisons in zero-knowledge proofs
Awarded Aug 27 '20 at 21:58
Safe primes and subgroups
Awarded Aug 27 '20 at 12:30
Is this permutation secure?
Awarded Aug 27 '20 at 10:52
Good layperson analogy for password and encryption keys
Awarded Aug 27 '20 at 7:32
Multiplicative inverse in ${GF}(2^4)$
Awarded Aug 26 '20 at 15:05
Problems with calculating inverse of finite field $GF(2^8)$ of AES
Awarded Aug 25 '20 at 19:34
Ring-LWE in other fields
Awarded Aug 24 '20 at 11:50
Vernam cipher trouble
Awarded Aug 24 '20 at 9:41
Diffie-Hellman Private Key Size
Awarded Aug 23 '20 at 20:17
Do all AEAD implementations use symmetric key ciphers in practice?
Awarded Aug 23 '20 at 17:45
Convert homomorphically encrypted decimal number to homomorphically encrypted binary number
Awarded Aug 23 '20 at 8:27
HMAC SHA256 - fixed vs dynamic key - security and collision impacts
Awarded Aug 23 '20 at 8:02
Is it absurd to estimate entropy from a sample?
Awarded Aug 22 '20 at 23:56
How is it possible that these two encryption functions yield the same result?
Awarded Aug 22 '20 at 16:41
Is the one-more discrete log problem hard in the Generic Group Model?
Awarded Aug 22 '20 at 15:47
Get the parameters of an elliptic curve's equation
Awarded Aug 21 '20 at 14:40
Why does dragonfly key exchange need hunting and pecking?
Awarded Aug 21 '20 at 8:33
Creating a private cryptocurrency without trusted setup
Awarded Aug 20 '20 at 16:02
How are points on an elliptic curve discretized?
Awarded Aug 19 '20 at 22:30
Proving that RSA encryption function with non-square free modulus is not a permutation
Awarded Aug 19 '20 at 14:55
OpenSSL aes-128-cfb does not produce expected size
Awarded Aug 17 '20 at 16:32
Enigma - How many possibilities does the plugboard have?
Awarded Aug 17 '20 at 15:04
Cracking RSA with small plaintext
Awarded Aug 16 '20 at 15:12
Why don't most encryption algorithms use perfect secrecy?
Awarded Aug 16 '20 at 1:05
Do the session keys have the same value on both sides during TLS?
Awarded Aug 15 '20 at 15:43
How do I safely encrypt a file for transport and storage?
Awarded Aug 15 '20 at 15:35
FIPS 140-2 compliance and RSA encryption
Awarded Aug 15 '20 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 '20 at 16:36
Strangers cryptographically agree on secure video channel using information over insecure channel
Awarded Aug 13 '20 at 4:11
Safety of encryption when knowing part of the content [duplicate]
Awarded Aug 12 '20 at 15:55
How to calculate size of a codebook lookup table to break block cipher?
Awarded Aug 12 '20 at 10:46
Quadruple DES vs AES-128 security
Awarded Aug 11 '20 at 21:07
Why are ed25519 keys not recommended for encryption?
Awarded Aug 11 '20 at 15:40
Which is the simplest cryptographic algorithm which is close to commercial-level security?
Awarded Aug 11 '20 at 10:42
Is it safe to store AES encrypted string and the original string in plaintext next to each other?
Awarded Aug 10 '20 at 16:18
Whitebox AES: why not steal the whole whitebox?
Awarded Aug 8 '20 at 21:50
Does it make sense that a hash is separated by hyphens [closed]
Awarded Aug 8 '20 at 11:57
Is it possible to create a 128-bit UUID from a weak entropy source?
Awarded Aug 5 '20 at 11:25
Is it possible to trim some encrypted values under fully homomorphic encryption
Awarded Aug 5 '20 at 8:04
Message input format for RSA algorithm
Awarded Aug 4 '20 at 15:16
Metrics for Measuring the Distance of Two Numbers in Cryptography
Awarded Aug 4 '20 at 2:15
Is 512 bits a more secure hashing than 256 bits?
Awarded Aug 2 '20 at 9:26
How can two parties offline generate a sequence of corresponding key pairs that are still sufficiently random
Awarded Jul 31 '20 at 20:46
How secure is a password generator that runs SHA256 on a passphrase
Awarded Jul 31 '20 at 3:07
Constant size commitment to a membership of a fixed size of elements
Awarded Jul 30 '20 at 14:34
The length extension attack and security on length shortening of a hashed message by one byte
Awarded Jul 30 '20 at 10:46
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