@tigthor/kokocrypt
Version:
Enhanced Fortress Edition - Secure, quantum-resistant, high-performance encryption package
90 lines • 3.97 kB
JavaScript
;
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Object.defineProperty(exports, "__esModule", { value: true });
exports.DecryptMiddleware = void 0;
const common_1 = require("@nestjs/common");
const crypto_service_1 = require("../core/crypto.service");
const session_context_1 = require("../core/session.context");
const replay_guard_1 = require("../core/replay.guard");
const wire_util_1 = require("./wire.util");
const sodiumNative = __importStar(require("sodium-native"));
let DecryptMiddleware = class DecryptMiddleware {
constructor(crypto, guard) {
this.crypto = crypto;
this.guard = guard;
}
async use(req, _res, next) {
var _a;
const box = (_a = req.body) !== null && _a !== void 0 ? _a : {};
if (!(0, wire_util_1.isWireBox)(box)) {
return next();
}
if (!this.guard.check(box.ts, box.iv)) {
return next();
}
try {
const session = session_context_1.SessionContext.get();
const key = session && session.kid === 'session'
? session.rx
: await this.crypto.getKey(box.kid);
if (!key) {
throw new Error('key not found');
}
const combined = (0, wire_util_1.fromWireBox)(box);
const secretKey = Buffer.from(key).subarray(0, sodiumNative.crypto_secretbox_KEYBYTES);
const plain = await this.crypto.unboxRaw(combined, secretKey);
req.body = JSON.parse(plain.toString());
}
catch (_b) {
}
next();
}
};
exports.DecryptMiddleware = DecryptMiddleware;
exports.DecryptMiddleware = DecryptMiddleware = __decorate([
(0, common_1.Injectable)(),
__metadata("design:paramtypes", [crypto_service_1.CryptoService,
replay_guard_1.ReplayGuard])
], DecryptMiddleware);
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