Cryptography

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How does Web Cryptography API produce secure PRNG?
Awarded 2 hours ago
What makes an open source encryption algorithm safe?
Awarded 22 hours ago
What can I do if I get private key of signing algorithm in Digital signiture
Awarded yesterday
ECDH and ECDSA in PGP with known public key
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How does the Flickr length extension attack work?
Awarded 2 days ago
(strong) collision resistance Example
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How can I convert numbers into prime numbers?
Awarded 2 days ago
Generating secure short activation code for offline applications
Awarded Jan 21 at 1:00
TLS handshake proof of private key posession
Awarded Jan 20 at 11:05
Shared secret: Generating Random Permutation
Awarded Jan 20 at 8:25
Is the HMAC construction really neccessary for a fixed length message?
Awarded Jan 19 at 9:55
Is AES-CBC mode not secure against chosen cipher-text attacks even if the IV is not predictable?
Awarded Jan 19 at 9:00
Summarize the mathematical problem at the heart of breaking a Curve25519 public key
Awarded Jan 18 at 22:20
Can I always derive a key pair from password+salt with libsodium?
Awarded Jan 18 at 18:45
Is frequency analysis the only attack on a simple substitution cipher?
Awarded Jan 18 at 15:25
How common are weak RSA keys?
Awarded Jan 18 at 14:55
ElGamal: Why is reusing the same $k$ not secure?
Awarded Jan 18 at 13:20
Difference between decryption and deciphering?
Awarded Jan 18 at 11:40
Best way to get 32 bytes from PBKDF2
Awarded Jan 18 at 2:20
Need 32-bit mixing function that has perfect avalanche between octets
Awarded Jan 17 at 22:25
What are the differences between ephemeral-static ECDH and static-static ECDH?
Awarded Jan 17 at 16:20
AES-GCM conformance test
Awarded Jan 16 at 19:20
HMAC-SHA1-128 parameters
Awarded Jan 16 at 18:05
What is the Peer Signing digest on an OpenSSL s_client connection?
Awarded Jan 16 at 16:50
Standard hash function of Linux
Awarded Jan 16 at 16:20
How hard is it to guess a 8 digit PIN?
Awarded Jan 16 at 12:20
Best practices (if any) to add metadata to encrypted files
Awarded Jan 14 at 23:10
What role does RSA play in DHE_RSA cipher suite?
Awarded Jan 14 at 22:05
KDF based on X9.63 vs. NIST SP800-108
Awarded Jan 14 at 22:05
HMAC-SHA512 output randomness?
Awarded Jan 14 at 12:50
Is 128-bit security still considered strong in 2020, within the context of both ECC Asym & Sym ciphers
Awarded Jan 14 at 12:00
How can an all-zero encryption key result in plaintext ?
Awarded Jan 14 at 3:15
What is Perfect forward secrecy?
Awarded Jan 11 at 8:15
Why does KangarooTwelve only use 12 rounds?
Awarded Jan 10 at 21:05
PBKDF2 for login key, scrypt for encryption key
Awarded Jan 10 at 10:35
Why is the Keyspace of a Substitution Cipher not 2^26 but 2^88
Awarded Jan 10 at 10:10
Is there any benefit to verifying PKCS#7 padding when using AES CBC and HMAC?
Awarded Jan 10 at 7:30
Perfect secrecy with XOR & SHIFT?
Awarded Jan 9 at 22:15
MD5 proving collision for the famous hexadecimal blocks
Awarded Jan 9 at 20:20
Space needed to store an RSA private key
Awarded Jan 9 at 13:45
Blake2B as a KDF
Awarded Jan 9 at 9:10
Encrypt entire payload or only confidential parts of payload?
Awarded Jan 8 at 18:40
Are common (secure) stream ciphers CCA1-secure?
Awarded Jan 8 at 15:10
What gives SHA-256 its preimage resistance?
Awarded Jan 8 at 12:50
In 2020, SHA-1 practically broken in chosen-prefix collision (CP-collision). Can double SHA-1 hashing prevent CP-collision?
Awarded Jan 8 at 12:15
Solve a Modular Exponentiation
Awarded Jan 8 at 10:05
Can I encrypt data with multiple keys and decrypt with one? [closed]
Awarded Jan 8 at 9:45
Why in one time pad must the key distribution to be truly random
Awarded Jan 8 at 5:10
MD5 - Chosen Prefix Collision Attack
Awarded Jan 7 at 20:55
Why does HOTP use such a complex truncate function?
Awarded Jan 7 at 10:05
Is pseudorandom function also a one-way function?
Awarded Jan 6 at 20:10
RSA primes vs. largest known primes
Awarded Jan 6 at 2:35
Can I shorten the large ECDSA public key output file from OpenSSL?
Awarded Jan 4 at 17:15
Factors of RSA modulus
Awarded Jan 4 at 11:40
Asymmetric password encryption - Viable? Which algorithm?
Awarded Jan 3 at 6:10
Definition of a CSPRNG
Awarded Jan 3 at 2:25
The GCD strikes back to RSA in 2019 - Good randomness is the only solution?
Awarded Jan 2 at 17:10
reverse an identicon to its source string
Awarded Jan 2 at 9:15
Prime factorization of 700 decimal digits number
Awarded Jan 1 at 17:55
Are there any bijective one-way functions not based on number-theoretic hardness assumptions?
Awarded Jan 1 at 15:30
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