Module crypto 

Cryptographic operations for Eidetica authentication

This module provides signature generation and verification for authenticating entries in the database. The PublicKey and PrivateKey enums enable crypto-agility by dispatching to algorithm-specific implementations.

Enums

PrivateKey

Algorithm-agnostic signing key for creating signatures.

PublicKey

Algorithm-agnostic public key for signature verification.

Constants

CHALLENGE_SIZE

Size of authentication challenges in bytes

ED25519_PRIVATE_KEY_SIZE

Size of Ed25519 private keys in bytes

ED25519_PUBLIC_KEY_SIZE

Size of Ed25519 public keys in bytes

ED25519_SIGNATURE_SIZE

Size of Ed25519 signatures in bytes

Functions

create_challenge_response

Create a challenge response by signing a challenge

generate_challenge

Generate random challenge bytes for authentication

generate_keypair

Generate a new keypair using the default algorithm (Ed25519).

sign_data

Sign data and return a base64-encoded signature.

sign_entry

Sign an entry and return a base64-encoded signature string.

verify_challenge_response

Verify a challenge response

verify_entry_signature

Verify an entry’s signature using an algorithm-agnostic PublicKey.