javascript - AES-GCM 与 Angular 中 Apple 的 CryptoKit 的兼容性

Question

此代码使用 Apple 的 CryptoKit 框架在 iOS 平台中使用带有 AES-GCM 的私钥和公钥生成消息字符串的加密和解密版本。

import CryptoKit

func generatePrivateKey() -> P256.KeyAgreement.PrivateKey {
    let privateKey = P256.KeyAgreement.PrivateKey()
    return privateKey
}

func exportPrivateKey(_ privateKey: P256.KeyAgreement.PrivateKey) -> String {
    let rawPrivateKey = privateKey.rawRepresentation
    let privateKeyBase64 = rawPrivateKey.base64EncodedString()
    let percentEncodedPrivateKey = privateKeyBase64.addingPercentEncoding(withAllowedCharacters: .alphanumerics)!
    return percentEncodedPrivateKey
}

func importPrivateKey(_ privateKey: String) throws -> Curve25519.KeyAgreement.PrivateKey {
    let privateKeyBase64 = privateKey.removingPercentEncoding!
    let rawPrivateKey = Data(base64Encoded: privateKeyBase64)!
    return try Curve25519.KeyAgreement.PrivateKey(rawRepresentation: rawPrivateKey)
}

func deriveSymmetricKey(privateKey: P256.KeyAgreement.PrivateKey, publicKey: P256.KeyAgreement.PublicKey) throws -> SymmetricKey {
    
    let sharedSecret = try privateKey.sharedSecretFromKeyAgreement(with: publicKey)
    let symmetricKey = sharedSecret.hkdfDerivedSymmetricKey(
        using: SHA256.self,
        salt: "My Key Agreement Salt".data(using: .utf8)!,
        sharedInfo: Data(),
        outputByteCount: 32
    )
    
    return symmetricKey
}

func encrypt(text: String, symmetricKey: SymmetricKey) throws -> String {
    let textData = text.data(using: .utf8)!
    let encrypted = try AES.GCM.seal(textData, using: symmetricKey)
    return encrypted.combined!.base64EncodedString()
}

func decrypt(text: String, symmetricKey: SymmetricKey) -> String {
    do {
        guard let data = Data(base64Encoded: text) else {
            return "Could not decode text: \(text)"
        }
        let sealedBox = try AES.GCM.SealedBox(combined: data)
        let decryptedData = try AES.GCM.open(sealedBox, using: symmetricKey)
        guard let text = String(data: decryptedData, encoding: .utf8) else {
            return "Could not decode data: \(decryptedData)"
        }
        return text
    }
    catch let error {
        return "Error decrypting message: \(error.localizedDescription)"
    }
} 

我怎样才能在 Angular (10) 中做同样的事情？我写了一些代码，但不幸的是我没有从中获得任何成功。这是我在 Angular 中的相同代码。

import { Component } from '@angular/core';
import cryptokit from "cryptokit";
@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})

export class AppComponent {
  title = 'MyEnc';
  my_public_key = '';
  other_public_key = '';
  constructor() { }
  async apps() {
    const P256Password = "some long random string";
    const P256Keys = await cryptokit.P256.generateKeys(P256Password);

    console.log("P256 private key (encrypted)= " + P256Keys.privateKey);
    console.log("P256 public key = " + P256Keys.publicKey);
  }


}

我收到了这个错误

错误错误：未捕获（承诺）：TypeError：crypto_1.generateKeyPair不是函数

标签： javascriptswiftangularencryptionend-to-end-encryption