ATrium Crypto

提供AT协议基本辅助功能的加密库。

此包实现了目前支持的两种加密系统

• p256 椭圆曲线：也称为“NIST P-256”，也称为secp256r1（注意r），也称为prime256v1
• k256 椭圆曲线：也称为“NIST K-256”，也称为secp256k1（注意k）

atproto中加密的详细信息请参阅规范。这包括字符串编码、"低-S"签名的有效性、字节表示"压缩"、散列等。

用法

use atrium_crypto::keypair::{Secp256k1Keypair, Did};
use atrium_crypto::verify::verify_signature;
use rand::rngs::ThreadRng;

fn main() -> Result<(), Box<dyn std::error::Error>>{
    // generate a new random K-256 private key
    let keypair = Secp256k1Keypair::create(&mut ThreadRng::default());

    // sign binary data, resulting signature bytes.
    // SHA-256 hash of data is what actually gets signed.
    let msg = [1, 2, 3, 4, 5, 6, 7, 8];
    let signature = keypair.sign(&msg)?;

    // serialize the public key as a did:key string, which includes key type metadata
    let pub_did_key = keypair.did();
    println!("{pub_did_key}");
    // output would look something like: 'did:key:zQ3shVRtgqTRHC7Lj4DYScoDgReNpsDp3HBnuKBKt1FSXKQ38'

    // verify signature using public key
    match verify_signature(&pub_did_key, &msg, &signature) {
        Ok(()) => println!("Success"),
        Err(_) => panic!("Uh oh, something is fishy"),
    }
    Ok(())
}