commit 52ceaaae89c9cbd787b10852064a14ed97b7375d Author: Shibo Lyu Date: Wed Sep 18 02:44:42 2024 +0800 init diff --git a/.zed/settings.json b/.zed/settings.json new file mode 100644 index 0000000..66234f7 --- /dev/null +++ b/.zed/settings.json @@ -0,0 +1,31 @@ +{ + "lsp": { + "deno": { + "settings": { + "deno": { + "enable": true + } + } + } + }, + "languages": { + "TypeScript": { + "language_servers": [ + "deno", + "!typescript-language-server", + "!vtsls", + "!eslint" + ], + "formatter": "language_server" + }, + "TSX": { + "language_servers": [ + "deno", + "!typescript-language-server", + "!vtsls", + "!eslint" + ], + "formatter": "language_server" + } + } +} diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..f288702 --- /dev/null +++ b/LICENSE @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/README.md b/README.md new file mode 100644 index 0000000..d21d026 --- /dev/null +++ b/README.md @@ -0,0 +1,21 @@ +# `@blah-im/core` + +This is an implementation of Blah Core Protocol in TypeScript. + +## Installation + +```bash +# Installing from npm registry +# You can use other npm-compatiable package managers too. +npm install @blah-im/core + +# Installing from JSR +deno add jsr:@blah/core +``` + +## Usage + +A symbol API document is available on JSR: https://jsr.io/@blah/core/doc + +## License +This project is licensed under GNU General Public License v3.0. See [LICENSE](LICENSE) for more details. diff --git a/crypto/canonicalize.ts b/crypto/canonicalize.ts new file mode 100644 index 0000000..2f53dff --- /dev/null +++ b/crypto/canonicalize.ts @@ -0,0 +1,41 @@ +// A simple adoption of https://github.com/erdtman/canonicalize/blob/master/lib/canonicalize.js + +export default function canonicalize(object: unknown) { + if (typeof object === "number" && isNaN(object)) { + throw new Error("NaN is not allowed"); + } + + if (typeof object === "number" && !isFinite(object)) { + throw new Error("Infinity is not allowed"); + } + + if (object === null || typeof object !== "object") { + return JSON.stringify(object); + } + + if ("toJSON" in object && object.toJSON instanceof Function) { + return canonicalize(object.toJSON()); + } + + if (Array.isArray(object)) { + const values = object.reduce((t, cv, ci) => { + const comma = ci === 0 ? "" : ","; + const value = cv === undefined || typeof cv === "symbol" ? null : cv; + return `${t}${comma}${canonicalize(value)}`; + }, ""); + return `[${values}]`; + } + + const values = Object.keys(object).sort().reduce((t, cv): string => { + const value: unknown = (object as Record)[cv]; + if ( + value === undefined || + typeof value === "symbol" + ) { + return t; + } + const comma = t.length === 0 ? "" : ","; + return `${t}${comma}${canonicalize(cv)}:${canonicalize(value)}`; + }, ""); + return `{${values}}`; +} diff --git a/crypto/crypto.test.ts b/crypto/crypto.test.ts new file mode 100644 index 0000000..d41867d --- /dev/null +++ b/crypto/crypto.test.ts @@ -0,0 +1,51 @@ +import { expect } from "@std/expect"; +import { BlahKeyPair } from "./mod.ts"; + +let keypair: BlahKeyPair; + +Deno.test("generate keypair", async () => { + keypair = await BlahKeyPair.generate(); +}); + +Deno.test("encode & decode keypair", async () => { + const encoded = await keypair.encode(); + const decoded = await BlahKeyPair.fromEncoded(encoded); + + expect(decoded.id).toBe(keypair.id); +}); + +Deno.test("sign & verify payload", async () => { + const payload = { foo: "bar", baz: 123 }; + const signedPayload = await keypair.signPayload(payload); + const verifiedPayload = await keypair.publicIdentity.verifyPayload( + signedPayload, + ); + + expect(verifiedPayload).toEqual(payload); +}); + +Deno.test("sign & verify payload with wrong keypair", async () => { + const keypair2 = await BlahKeyPair.generate(); + const payload = { foo: "bar", baz: 123 }; + const signedPayload = await keypair.signPayload(payload); + expect(keypair2.publicIdentity.verifyPayload(signedPayload)) + .rejects.toMatch(/sign/); +}); + +Deno.test("sign & verify payload with wrong key order but should still work", async () => { + const payload = { foo: "bar", baz: 123 }; + const signedPayload = await keypair.signPayload(payload); + const signedPayload2 = { + sig: signedPayload.sig, + signee: { + payload: { baz: 123, foo: "bar" }, + user: signedPayload.signee.user, + nonce: signedPayload.signee.nonce, + timestamp: signedPayload.signee.timestamp, + }, + }; + const verifiedPayload = await keypair.publicIdentity.verifyPayload( + signedPayload2, + ); + expect(verifiedPayload).toEqual(payload); +}); diff --git a/crypto/keypair.ts b/crypto/keypair.ts new file mode 100644 index 0000000..3190c33 --- /dev/null +++ b/crypto/keypair.ts @@ -0,0 +1,95 @@ +import canonicalize from "./canonicalize.ts"; +import { BlahPublicIdentity } from "./publicIdentity.ts"; +import type { BlahPayloadSignee, BlahSignedPayload } from "./signedPayload.ts"; +import { bufToHex } from "./utils.ts"; + +export type EncodedBlahKeyPair = { + v: "0"; + id: string; + privateKey: JsonWebKey; +}; + +export class BlahKeyPair { + publicIdentity: BlahPublicIdentity; + private privateKey: CryptoKey; + + get id() { + return this.publicIdentity.id; + } + get name() { + return this.publicIdentity.name; + } + + private constructor( + publicIdentity: BlahPublicIdentity, + privateKey: CryptoKey, + ) { + this.publicIdentity = publicIdentity; + this.privateKey = privateKey; + } + + static async generate(): Promise { + const { publicKey, privateKey } = await crypto.subtle.generateKey( + "Ed25519", + true, + [ + "sign", + "verify", + ], + ) as CryptoKeyPair; + const publicIdentity = await BlahPublicIdentity.fromPublicKey(publicKey); + return new BlahKeyPair(publicIdentity, privateKey); + } + + static async fromEncoded(encoded: EncodedBlahKeyPair): Promise { + if (encoded.v !== "0") { + throw new Error("Unsupported version"); + } + const publicIdentity = await BlahPublicIdentity.fromID(encoded.id); + const privateKey = await crypto.subtle.importKey( + "jwk", + encoded.privateKey, + { name: "Ed25519" }, + true, + ["sign"], + ); + + return new BlahKeyPair(publicIdentity, privateKey); + } + + async encode(): Promise { + return { + v: "0", + id: this.publicIdentity.id, + privateKey: await crypto.subtle.exportKey("jwk", this.privateKey), + }; + } + + async signPayload

( + payload: P, + date: Date = new Date(), + ): Promise> { + const nonceBuf = new Uint32Array(1); + crypto.getRandomValues(nonceBuf); + + const timestamp = Math.floor(date.getTime() / 1000); + + const signee: BlahPayloadSignee

= { + nonce: nonceBuf[0], + payload, + timestamp, + user: this.id, + }; + const signeeBytes = new TextEncoder().encode(canonicalize(signee)); + + const rawSig = await crypto.subtle.sign( + "Ed25519", + this.privateKey, + signeeBytes, + ); + return { + sig: bufToHex(rawSig), + signee, + }; + } +} diff --git a/crypto/mod.ts b/crypto/mod.ts new file mode 100644 index 0000000..a5f640a --- /dev/null +++ b/crypto/mod.ts @@ -0,0 +1,4 @@ +export * from "./keypair.ts"; +export * from "./publicIdentity.ts"; +export * from "./signedPayload.ts"; +export * from "./utils.ts"; diff --git a/crypto/publicIdentity.ts b/crypto/publicIdentity.ts new file mode 100644 index 0000000..efb0d04 --- /dev/null +++ b/crypto/publicIdentity.ts @@ -0,0 +1,66 @@ +import canonicalize from "./canonicalize.ts"; +import type { BlahSignedPayload } from "./signedPayload.ts"; +import { bufToHex, hexToBuf } from "./utils.ts"; + +export class BlahPublicIdentity { + private publicKey: CryptoKey; + id: string; + name: string; + + private constructor(publicKey: CryptoKey, id: string) { + this.publicKey = publicKey; + this.id = id; + // First 4 and last 4 characters of the id + this.name = id.slice(0, 4) + "..." + id.slice(-4); + } + + static async fromPublicKey( + publicKey: CryptoKey, + ): Promise { + const rawKey = await crypto.subtle.exportKey("raw", publicKey); + const id = bufToHex(rawKey); + return new BlahPublicIdentity(publicKey, id); + } + + static async fromID(id: string): Promise { + const rawKey = hexToBuf(id); + const publicKey = await crypto.subtle.importKey( + "raw", + rawKey, + { name: "Ed25519" }, + true, + [ + "verify", + ], + ); + return new BlahPublicIdentity(publicKey, id); + } + + static async verifyPayload

( + signedPayload: BlahSignedPayload

, + ): Promise<{ payload: P; identity: BlahPublicIdentity }> { + const { signee } = signedPayload; + const identity = await BlahPublicIdentity.fromID(signee.user); + return { payload: await identity.verifyPayload(signedPayload), identity }; + } + + async verifyPayload

(signedPayload: BlahSignedPayload

): Promise

{ + const { sig, signee } = signedPayload; + if (signee.user !== this.id) { + throw new Error( + `Payload is not signed by this identity. Was signed by ${signee.user}.`, + ); + } + const signeeBytes = new TextEncoder().encode(canonicalize(signee)); + const result = await crypto.subtle.verify( + "Ed25519", + this.publicKey, + hexToBuf(sig), + signeeBytes, + ); + if (!result) { + throw new Error("Invalid signature"); + } + return signee.payload; + } +} diff --git a/crypto/signedPayload.ts b/crypto/signedPayload.ts new file mode 100644 index 0000000..b3c0ec2 --- /dev/null +++ b/crypto/signedPayload.ts @@ -0,0 +1,12 @@ +export type BlahPayloadSignee

= { + nonce: number; + payload: P; + timestamp: number; + user: string; + act_key?: string; +}; + +export type BlahSignedPayload

= { + sig: string; + signee: BlahPayloadSignee

; +}; diff --git a/crypto/utils.ts b/crypto/utils.ts new file mode 100644 index 0000000..b30a8ef --- /dev/null +++ b/crypto/utils.ts @@ -0,0 +1,10 @@ +export function bufToHex(buf: ArrayBufferLike): string { + return [...new Uint8Array(buf)].map((x) => x.toString(16).padStart(2, "0")) + .join(""); +} + +export function hexToBuf(hex: string): Uint8Array { + return new Uint8Array( + (hex.match(/[\da-f]{2}/gi) ?? []).map((m) => parseInt(m, 16)), + ); +} diff --git a/deno.json b/deno.json new file mode 100644 index 0000000..733352f --- /dev/null +++ b/deno.json @@ -0,0 +1,6 @@ +{ + "imports": { + "@deno/dnt": "jsr:@deno/dnt@^0.41.3", + "@std/expect": "jsr:@std/expect@^1.0.3" + } +} diff --git a/deno.lock b/deno.lock new file mode 100644 index 0000000..a185b98 --- /dev/null +++ b/deno.lock @@ -0,0 +1,150 @@ +{ + "version": "3", + "packages": { + "specifiers": { + "jsr:@david/code-block-writer@^13.0.2": "jsr:@david/code-block-writer@13.0.2", + "jsr:@deno/cache-dir@^0.10.3": "jsr:@deno/cache-dir@0.10.3", + "jsr:@deno/dnt@^0.41.3": "jsr:@deno/dnt@0.41.3", + "jsr:@deno/graph@^0.73.1": "jsr:@deno/graph@0.73.1", + "jsr:@std/assert@^0.223.0": "jsr:@std/assert@0.223.0", + "jsr:@std/assert@^0.226.0": "jsr:@std/assert@0.226.0", + "jsr:@std/assert@^1.0.5": "jsr:@std/assert@1.0.5", + "jsr:@std/bytes@^0.223.0": "jsr:@std/bytes@0.223.0", + "jsr:@std/expect@^1.0.3": "jsr:@std/expect@1.0.3", + "jsr:@std/fmt@1": 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+ "@ts-morph/common@0.24.0": { + "integrity": "12b625b8e562446ba658cdbe9ad77774b4bd96b992ae8bd34c60dbf24d06c1f3", + "dependencies": [ + "jsr:@std/fs@^0.229.3", + "jsr:@std/path@^0.225.2" + ] + } + } + }, + "remote": {}, + "workspace": { + "dependencies": [ + "jsr:@deno/dnt@^0.41.3", + "jsr:@std/expect@^1.0.3" + ] + } +} diff --git a/scripts/build_npm.ts b/scripts/build_npm.ts new file mode 100644 index 0000000..30fbad6 --- /dev/null +++ b/scripts/build_npm.ts @@ -0,0 +1,31 @@ +import { build, emptyDir } from "@deno/dnt"; + +await emptyDir("./npm"); + +await build({ + entryPoints: ["./mod.ts"], + outDir: "./npm", + shims: { + // see JS docs for overview and more options + deno: true, + }, + package: { + // package.json properties + name: "@blah-im/core", + version: Deno.args[0], + description: "Core logic & types for Blah IM.", + license: "GPL-3.0-only", + repository: { + type: "git", + url: "git+https://github.com/blah-im/typescript-core.git", + }, + bugs: { + url: "https://github.com/blah-im/typescript-core/issues", + }, + }, + postBuild() { + // steps to run after building and before running the tests + Deno.copyFileSync("LICENSE", "npm/LICENSE"); + Deno.copyFileSync("README.md", "npm/README.md"); + }, +});