使用 RSAES-OAEP/SHA-256/MGF1-SHA-1 使用公钥加密 flutter 中的数据

Question

我需要在flutter中创建以下代码，使用RSAES-OAEP/SHA-256/MGF1-SHA-1用公钥加密数据

    textPayPass=document.getElementById('tpassword').value;
    $('tpassword').val('');
    s_cert = "-----BEGIN PUBLIC KEY-----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-----END PUBLIC KEY-----";

    var s_certForge = forge.pki.publicKeyFromPem(s_cert);
    // encrypt data with a public key using RSAES-OAEP/SHA-256/MGF1-SHA-1
    // compatible with Java's RSA/ECB/OAEPWithSHA-256AndMGF1Padding
    var encData = s_certForge.encrypt(textPayPass, 'RSA-OAEP', {
    md: forge.md.sha256.create(),
    mgf1: {
        md: forge.md.sha1.create()
    }
    });
    var s_encData = forge.util.encode64(encData);

Answer 1

您可以尝试这个包 - https://pub.dev/packages/cryptography

这是对上述参考文献中的数据进行加密的一个示例。

Future<void> main() async {
  final algorithm = AesGcm.with256bits();

  // Generate a random 256-bit secret key
  final secretKey = await algorithm.newSecretKey();

  // Generate a random 96-bit nonce.
  final nonce = algorithm.newNonce();

  // Encrypt
  final clearText = [1, 2, 3];
  final secretBox = await algorithm.encrypt(
    clearText,
    secretKey: secretKey,
    nonce: nonce,
  );
  print('Ciphertext: ${secretBox.cipherText}');
  print('MAC: ${secretBox.mac}');
}