Crypto —— AT Protocol 加密

// 生成新的密钥对
$keypair = P256::create();
$keypair = K256::create();

// 从 URL-safe Base64 编码的私钥加载
$keypair = P256::load($base64PrivateKey);

// 获取 PEM 格式
$privatePem = $keypair->privatePEM();
$publicPem  = $keypair->publicPEM();

// 转换为 JWK (JSON Web Key)
$jwk = $keypair->toJWK();

use Revolution\Bluesky\Crypto\P256;

$keypair = P256::create();

php artisan bluesky:new-private-key

use Revolution\Bluesky\Crypto\K256;

$keypair = K256::create();

use Revolution\Bluesky\Crypto\DidKey;
use Revolution\Bluesky\Crypto\K256;

$keypair = K256::create();
$publicPem = $keypair->publicPEM();

// 转为 did:key 格式
$didKey = DidKey::format($publicPem);
// => "did:key:zQ3s..."

use Revolution\Bluesky\Crypto\DidKey;
use Revolution\Bluesky\Facades\Bluesky;
use Revolution\Bluesky\Support\DidDocument;

$didDoc = DidDocument::make(
    Bluesky::identity()->resolveDID('did:plc:***')->json()
);

// 从 DID Document 的 publicKey (multibase) 生成 phpseclib3 的公钥对象
$publicKey = DidKey::parse($didDoc->publicKey());

use Revolution\Bluesky\Crypto\JsonWebToken;

// 生成 JWT（用 PEM 私钥签名）
$token = JsonWebToken::encode(
    payload: ['iss' => 'did:plc:***', 'aud' => 'https://bsky.social', 'exp' => time() + 60],
    key: $privatePem,
    alg: 'ES256',
);

// 解码 JWT（不做签名校验）
$payload = JsonWebToken::decode($token);

// 生成 DPoP proof（用于 OAuth token 请求）
$proof = DPoP::authProof(
    jwk: $jsonWebKey,
    url: 'https://bsky.social/oauth/token',
    method: 'POST',
    nonce: $nonce,
);

// 生成 DPoP proof（用于 API 请求，包含 ath）
$proof = DPoP::apiProof(
    jwk: $jsonWebKey,
    url: 'https://api.bsky.app/xrpc/...',
    method: 'GET',
    token: $accessToken,
    nonce: $nonce,
);

use Revolution\Bluesky\Crypto\Signature;

// ASN.1 DER → compact（64 字节）
$compact = Signature::toCompact($derSignature);

// compact → ASN.1 DER
$der = Signature::fromCompact($compactSignature);

use Revolution\Bluesky\Crypto\JsonWebKey;

// 从密钥对生成 JWK
$jwk = $keypair->toJWK();

// 或者直接实例化
$jwk = JsonWebKey::load(['kty' => 'EC', 'crv' => 'P-256', ...]);

use Revolution\Bluesky\Crypto\OAuthKey;

// 从配置中加载私钥
$oauthKey = OAuthKey::load();

// 用于对 Client Assertion JWT 进行签名
$jwk = $oauthKey->toJWK();