Results for “python-cryptography”

Implement AES-256-GCM encryption for files and data at rest, including key derivation, IV management, and authenticated encryption.

Analyzes cryptographic code to detect operations that leak secret data through execution timing variations, supporting multiple languages.

Systematically reviews an application's use of cryptographic primitives, protocols, and key management to identify vulnerabilities such as weak algorithms, insecure modes, hardcoded keys, insufficient entropy, and protocol misconfigurations.

Implements a simplified version of the Signal Protocol's Double Ratchet algorithm using X25519, HKDF, and AES-256-GCM for end-to-end encrypted messaging.

Analyzes encryption algorithms, key management, and file encryption routines used by ransomware families to assess decryption feasibility, identify implementation weaknesses, and support recovery efforts.

Generate, store, rotate, and manage RSA key pairs following NIST SP 800-57 guidelines, including key serialization, passphrase protection, and key strength validation.

Implement secure JWT signing and verification with HMAC-SHA256, RSA-PSS, and EdDSA, including token expiration, claims validation, and defense against common JWT attacks.

Implements Schnorr identification protocol and zero-knowledge password proof for authentication where the server never learns the user's password.

Uses mutation testing to systematically identify gaps in test vector coverage for cryptographic algorithms, then generates new test vectors that close those gaps. Measures effectiveness by comparing mutation kill rates before and after.