Crate astrid_crypto 

Astrid Crypto - Cryptographic primitives for the secure agent runtime.

This crate provides:

• Ed25519 key pairs with secure memory handling
• Signatures for capability tokens and audit entries
• BLAKE3 content hashing for audit chains and verification

Security Philosophy

Cryptography over prompts. Authorization comes from ed25519 signatures and capability tokens, not from hoping the LLM follows instructions.

Example

use astrid_crypto::{KeyPair, ContentHash};

// Generate a new key pair
let keypair = KeyPair::generate();

// Sign a message
let message = b"important data";
let signature = keypair.sign(message);

// Verify the signature
assert!(keypair.verify(message, &signature).is_ok());

// Hash content
let hash = ContentHash::hash(message);
println!("Hash: {}", hash.to_hex());

Modules

prelude

Prelude module - commonly used types for convenient import.

Structs

ContentHash

A BLAKE3 content hash (32 bytes).

IdentifierHash

A domain-separated BLAKE3 identifier.

KeyPair

An Ed25519 key pair with secure memory handling.

PublicKey

A public key (safe to share, serialize, etc.).

PublicKeyFingerprint

A full BLAKE3 fingerprint for an Ed25519 public key.

Signature

An Ed25519 signature (64 bytes).

Enums

CryptoError

Errors that can occur during cryptographic operations.

Type Aliases

CryptoResult

Result type for cryptographic operations.