Public key to RSA public key for c#

Question

I need to use RSA Cryptography in c# project to send ecrypted data to service. Service gave me a public key like this:

How can i convert it to base64 string to use with this code?

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);
}

Possible duplicate of [C# / .NET crypto: Using Base64 encoded Public Key to verify RSA signature](http://stackoverflow.com/questions/9283716/c-sharp-net-crypto-using-base64-encoded-public-key-to-verify-rsa-signature) — santosh singh, Sep 28 '16 at 14:59

score 0 · Answer 1 · answered Sep 28 '16 at 15:10

0

I found solution, it was easy: I need to use:

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

answered Sep 28 '16 at 15:10

Yan

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Public key to RSA public key for c#

1 Answers1