iOS Swift与Node JSencryption不同的输出

我不知道我的Node JS代码有什么问题。 节点JS的输出缺less一些字符，而不是iOS Swift中的输出。

我的节点JS代码：

var crypto = require('crypto'); var CRYPTO_ALGORITHM = "aes-256-ctr"; var CRYPTO_PASSWORD = "3zTvzr3p67VC61jmV54rIYu1545x4TlY"; var CRYPTO_IV = "0123456789012345"; var string_data = "OLIVER MARTINEZ OLIVER"; var cipher = crypto.createCipheriv(CRYPTO_ALGORITHM, CRYPTO_PASSWORD, CRYPTO_IV); var encrypted = cipher.update(string_data, "utf8", "hex"); encrypted += cipher.final("hex"); // to hex console.log("encrypted final: " + encrypted); // --------------------------------------------------------------- // var encrypted_string = encrypted; var decipher = crypto.createDecipheriv(CRYPTO_ALGORITHM, CRYPTO_PASSWORD, CRYPTO_IV); var decrypted = decipher.update(encrypted_string, "hex", "utf8"); decrypted += decipher.final("utf8"); // to utf8 console.log("decrypted final: " + decrypted); 

节点输出：3df3cfd9adef86489fd27629d75f3fcbb744e5bae846

我的iOS Swift代码：

 let CRYPTO_IV = "0123456789012345"; let CRYPTO_PASSWORD = "3zTvzr3p67VC61jmV54rIYu1545x4TlY"; let data = "OLIVER MARTINEZ OLIVER"; let encrypted = try! data.encrypt(AES(key: CRYPTO_PASSWORD, iv: CRYPTO_IV, blockMode: .CTR)).toHexString(); print("encrypted: \(encrypted)"); 

IOS SWIFT OUTPUT：3df3cfd9adef86489fd27629d75f3fcbb744e5bae846bde7df9e98571ba27f01

如你看到的。 输出非常相似。 只有NodeJS输出缺less一些字符。

Answer 1

CTR模式是一种不需要任何填充的stream模式。 CryptoSwift似乎总是添加填充，即使使用CTR等stream式传输模式。 您需要请求在Swift中不应用填充：

 data.encrypt(AES(key: CRYPTO_PASSWORD, iv: CRYPTO_IV, blockMode: .CTR , padding: NoPadding() )).toHexString();