One Calendar is a privacy-first calendar web app built with Next.js. It has modern security features, including e2ee, password-protected sharing, and self-destructing share links 📅
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Delete lib/crypto.ts
authored by
Evan Huang
and committed by
GitHub
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lib/crypto.ts
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lib/crypto.ts
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// 从密码派生密钥
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async function deriveKey(password: string, salt?: Uint8Array): Promise<{ key: CryptoKey; salt: Uint8Array }> {
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// 如果没有提供盐值，则生成一个新的
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if (!salt) {
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salt = crypto.getRandomValues(new Uint8Array(16))
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}
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// 从密码派生密钥
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const keyMaterial = await crypto.subtle.importKey(
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"raw",
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new TextEncoder().encode(password),
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{ name: "PBKDF2" },
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false,
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["deriveBits", "deriveKey"],
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)
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const key = await crypto.subtle.deriveKey(
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{
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name: "PBKDF2",
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salt,
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iterations: 100000,
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hash: "SHA-256",
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},
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keyMaterial,
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{ name: "AES-GCM", length: 256 },
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false,
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["encrypt", "decrypt"],
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)
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return { key, salt }
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}
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// 加密数据
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export async function encrypt(data: string, password: string): Promise<string> {
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// 生成初始化向量
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const iv = crypto.getRandomValues(new Uint8Array(12))
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// 从密码派生密钥
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const { key, salt } = await deriveKey(password)
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// 加密数据
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const encryptedData = await crypto.subtle.encrypt(
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{
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name: "AES-GCM",
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iv,
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},
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key,
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new TextEncoder().encode(data),
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)
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// 将加密数据、盐值和初始化向量合并为一个数组
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const result = new Uint8Array(salt.length + iv.length + encryptedData.byteLength)
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result.set(salt, 0)
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result.set(iv, salt.length)
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result.set(new Uint8Array(encryptedData), salt.length + iv.length)
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// 将结果转换为Base64字符串
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return btoa(String.fromCharCode(...result))
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}
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// 解密数据
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export async function decrypt(encryptedData: string, password: string): Promise<string> {
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// 将Base64字符串转换回Uint8Array
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const data = new Uint8Array(
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atob(encryptedData)
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.split("")
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.map((char) => char.charCodeAt(0)),
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)
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// 提取盐值、初始化向量和加密数据
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const salt = data.slice(0, 16)
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const iv = data.slice(16, 28)
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const ciphertext = data.slice(28)
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// 从密码和盐值派生密钥
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const { key } = await deriveKey(password, salt)
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// 解密数据
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const decryptedData = await crypto.subtle.decrypt(
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{
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name: "AES-GCM",
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iv,
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},
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key,
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ciphertext,
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)
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// 将解密后的数据转换为字符串
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return new TextDecoder().decode(decryptedData)
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}
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