2016-09-28 213 views
0

我需要在c#項目中使用RSA密碼來將ecrypted數據發送到服務。 服務給了我這樣一個公共密鑰:c#的RSA公共密鑰的公鑰#

-----BEGIN PUBLIC KEY----- 
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAjU/bq6YZD2H0DUhbtEBg 
JIyiurM8eX3aH02/ZWr6VZ27WF93ylWC4cGAe50sSgiA8NCW0G/UL77kAkebJQrJ 
jVdt7SvDypSPk1mXNK0i9cI9DrdmAHLGLlYJx7eeY6h4JShLhOBnKRghi0S4uL5N 
L7W4OUgCeUlGWcmz8ssNEQ5w17rfUF9TxYEFVKFMGN/SSaYNUr4znGt2r97YPsPy 
0Sk4dGHhMXr1QGR05UQeVuU43OuRAFxA71YbuCRUYg5ENwKM/1RnNcu8v7kXFA4L 
qGV9AncHLIZEOqWgY+4balVXlKIcMVN6W+PXKJpowOyB9QIq1Ec3OMaJ3sGpOppx 
KQIDAQAB 
-----END PUBLIC KEY----- 

我怎樣才能將其轉換爲Base64字符串與此代碼使用?

public static string EncryptData(string publicKey, string clearText) 
{ 
    IBuffer keyBuffer = CryptographicBuffer.DecodeFromBase64String(publicKey); 
    AsymmetricKeyAlgorithmProvider asym = AsymmetricKeyAlgorithmProvider.OpenAlgorithm(AsymmetricAlgorithmNames.RsaPkcs1); 
    CryptographicKey key = asym.ImportPublicKey(keyBuffer, CryptographicPublicKeyBlobType.Capi1PublicKey); 
    IBuffer plainBuffer = CryptographicBuffer.ConvertStringToBinary(clearText, BinaryStringEncoding.Utf8); 
    IBuffer encryptedBuffer = CryptographicEngine.Encrypt(key, plainBuffer, null); 
    byte[] encryptedBytes; 
    CryptographicBuffer.CopyToByteArray(encryptedBuffer, out encryptedBytes); 
    return Convert.ToBase64String(encryptedBytes); 
} 
+0

的可能的複製[C#/。NET加密:使用編碼的公共密鑰的Base64驗證RSA簽名(HTTP: //stackoverflow.com/questions/9283716/c-sharp-net-crypto-using-base64-encoded-public-key-to-verify-rsa-signature) –

回答

0

我找到解決方案,很容易: 我需要使用:

CryptographicKey key = asym.ImportPublicKey(keyBuffer, CryptographicPublicKeyBlobType.X509SubjectPublicKeyInfo);