Swift 中的 AES 加密

使用Swift语言进行AES加密的功能非常强大和实用。AES（Advanced Encryption Standard）是一种对称加密算法，被广泛应用于数据保护和安全传输领域。在Swift中，我们可以使用CryptoKit库来实现AES加密，这为我们提供了一种简单而安全的方式来保护我们的数据。

swift
import CryptoKit
func encryptData(data: Data, key: SymmetricKey) throws -> Data {
    let sealedBox = try AES.GCM.seal(data, using: key)
    return sealedBox.combined
}
func decryptData(data: Data, key: SymmetricKey) throws -> Data {
    let sealedBox = try AES.GCM.SealedBox(combined: data)
    return try AES.GCM.open(sealedBox, using: key)
}
// 使用AES加密字符串
let text = "Hello, World!"
let data = Data(text.utf8)
let key = SymmetricKey(size: .bits256)
let encryptedData = try encryptData(data: data, key: key)
let decryptedData = try decryptData(data: encryptedData, key: key)
if let decryptedText = String(data: decryptedData, encoding: .utf8) {
    print("Decrypted Text: \(decryptedText)")
}

swift
import CryptoKit
func encryptPassword(password: String, key: SymmetricKey) throws -> Data {
    let data = Data(password.utf8)
    let sealedBox = try AES.GCM.seal(data, using: key)
    return sealedBox.combined
}
func verifyPassword(password: String, encryptedData: Data, key: SymmetricKey) throws -> Bool {
    let data = try decryptData(data: encryptedData, key: key)
    if let decryptedPassword = String(data: data, encoding: .utf8) {
        return decryptedPassword == password
    }
    return false
}
let password = "secretpassword"
let key = SymmetricKey(size: .bits256)
do {
    let encryptedPassword = try encryptPassword(password: password, key: key)
    let isPasswordValid = try verifyPassword(password: password, encryptedData: encryptedPassword, key: key)
    print("Is Password Valid: \(isPasswordValid)")
} catch {
    print("Error: \(error)")
}