feat: 초기 프로젝트 설정 및 룰.md 파일 추가

api.hyungi.net/node_modules/@peculiar/asn1-schema/README.md

@@ -0,0 +1,106 @@
+# `@peculiar/asn1-schema`
+
+[![License](https://img.shields.io/badge/license-MIT-green.svg?style=flat)](https://raw.githubusercontent.com/PeculiarVentures/asn1-schema/master/packages/schema/LICENSE.md)
+[![npm version](https://badge.fury.io/js/%40peculiar%2Fasn1-schema.svg)](https://badge.fury.io/js/%40peculiar%2Fasn1-schema)
+
+[![NPM](https://nodei.co/npm/@peculiar/asn1-schema.png)](https://nodei.co/npm/@peculiar/asn1-schema/)
+
+This package uses ES2015 [decorators](https://medium.com/google-developers/exploring-es7-decorators-76ecb65fb841) to simplify working with ASN.1 creation and parsing. 
+
+
+## Introduction
+
+Abstract Syntax Notation One (ASN.1) is a standard interface description language for defining data structures that can be serialized and deserialized in a cross-platform way. Working with ASN.1 can be complicated as there are many ways to represent the same data and many solutions handcraft, incorrectly, the ASN.1 representation of the data.
+
+`asn1-schema` addresses this by using decorators to make both serialization and parsing of ASN.1 possible via a simple class that handles these problems for you. 
+
+This is important because validating input data before its use is important to do because all input data is evil. 
+
+
+## Installation
+
+Installation is handled via  `npm`:
+
+```
+$ npm install @peculiar/asn1-schema
+```
+
+## TypeScript examples
+Node.js:
+
+ASN.1 schema
+```
+Extension  ::=  SEQUENCE  {
+  extnID      OBJECT IDENTIFIER,
+  critical    BOOLEAN DEFAULT FALSE,
+  extnValue   OCTET STRING
+              -- contains the DER encoding of an ASN.1 value
+              -- corresponding to the extension type identified
+              -- by extnID
+}
+
+id-ce-basicConstraints OBJECT IDENTIFIER ::=  { id-ce 19 }
+
+BasicConstraints ::= SEQUENCE {
+  cA                      BOOLEAN DEFAULT FALSE,
+  pathLenConstraint       INTEGER (0..MAX) OPTIONAL 
+}
+```
+
+ASN.1 schema declaration in TypeScript project
+```ts
+import { Asn1Prop, Asn1PropTypes, Asn1Serializer } from "@peculiar/asn1-schema";
+
+class Extension {
+
+  public static CRITICAL = false;
+
+  @AsnProp({ type: Asn1PropTypes.ObjectIdentifier })
+  public extnID: string = "";
+
+  @AsnProp({
+    type: Asn1PropTypes.Boolean,
+    defaultValue: Extension.CRITICAL,
+  })
+  public critical = Extension.CRITICAL;
+
+  @AsnProp({ type: Asn1PropTypes.OctetString })
+  public extnValue: ArrayBuffer = new ArrayBuffer(0);
+
+}
+
+class BasicConstraints {
+  @AsnProp({ type: Asn1PropTypes.Boolean, defaultValue: false })
+  public ca = false;
+
+  @AsnProp({ type: Asn1PropTypes.Integer, optional: true })
+  public pathLenConstraint?: number;
+}
+```
+
+Encoding ASN.1 data
+```ts
+const basicConstraints = new BasicConstraints();
+basicConstraints.ca = true;
+basicConstraints.pathLenConstraint = 1;
+
+const extension = new Extension();
+extension.critical = true;
+extension.extnID = "2.5.29.19";
+extension.extnValue = AsnSerializer.serialize(basicConstraints);
+
+console.log(Buffer.from(AsnSerializer.serialize(extension)).toString("hex")); // 30120603551d130101ff040830060101ff020101
+```
+
+[ASN.1 encoded  data](http://lapo.it/asn1js/#MBIGA1UdEwEB_wQIMAYBAf8CAQE)
+
+Decoding ASN.1 data
+```ts
+const extension = AsnParser.parse(Buffer.from("30120603551d130101ff040830060101ff020101", "hex"), Extension);
+console.log("Extension ID:", extension.extnID); // Extension ID: 2.5.29.19
+console.log("Critical:", extension.critical); // Critical: true
+
+const basicConstraints = AsnParser.parse(extension.extnValue, BasicConstraints);
+console.log("CA:", basicConstraints.ca); // CA: true
+console.log("Path length:", basicConstraints.pathLenConstraint); // Path length: 1
+```