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我需要生成一个 AES 密钥并将其发送到服务器。

创建密钥似乎不是问题:

   var aesProvider = SymmetricKeyAlgorithmProvider.OpenAlgorithm(SymmetricAlgorithmNames.AesEcbPkcs7);

   var aesKey = aesProvider.CreateSymmetricKey(CryptographicBuffer.GenerateRandom(16));

但是,将 AES 密钥导出为 base64 编码的字符串似乎是不可能的;

我尝试使用密钥对象上的 Export/ExportPublic 方法将其导出,但它们都抛出 NotImplemented 异常:

 aesKey.ExportPublicKey(); not implemented
 aesKey.ExportPublicKey(CryptographicPublicKeyBlobType.BCryptPublicKey);
 aesKey.ExportPublicKey(CryptographicPublicKeyBlobType.Capi1PublicKey);
 aesKey.Export();
 aesKey.Export(CryptographicPrivateKeyBlobType.BCryptPrivateKey);
 aesKey.Export(CryptographicPrivateKeyBlobType.Pkcs1RsaPrivateKey);
 aesKey.Export(CryptographicPrivateKeyBlobType.Pkcs8RawPrivateKeyInfo);
 aesKey.Export(CryptographicPrivateKeyBlobType.Capi1PrivateKey);
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