UWP [Evrensel pencere platformu] RSA AsimetrikKeyAlgorithmProvider alma genel anahtarı

Question

UWP'de Windows.Security.Cryptography.Core kullanmayı denediğimde, genel anahtarı AsymmetricKeyAlgorithmProvider'dan almayla ilgili bir hata alıyorum. Her birleşimi başarıya ulaşmadan denedim. Giriş dizgisini her zaman UTF8 modunda olmasını kontrol ettim.

try { 
    var bytes = Encoding.UTF8.GetBytes(publicKeyString); 
    publicKeyString = Encoding.UTF8.GetString(bytes); 

    Debug.WriteLine(publicKeyString); 
    IBuffer keyBuffer = CryptographicBuffer.DecodeFromBase64String(publicKeyString); 

    byte[] bytes = Convert.FromBase64String(publicKeyString); 
    string hex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

    Debug.WriteLine(hex); 
    AsymmetricKeyAlgorithmProvider provider = AsymmetricKeyAlgorithmProvider.OpenAlgorithm(AsymmetricAlgorithmNames.RsaPkcs1); 
    CryptographicKey publicKey = provider.ImportPublicKey(CryptographicBuffer.DecodeFromHexString(hex), CryptographicPublicKeyBlobType.BCryptPublicKey); 
    IBuffer dataBuffer = CryptographicBuffer.CreateFromByteArray(Encoding.UTF8.GetBytes(plainText)); 
    var encryptedData = CryptographicEngine.Encrypt(publicKey, dataBuffer, null); 

    return CryptographicBuffer.EncodeToBase64String(encryptedData); 
} 
catch (Exception e) 
{ 
    throw; 
    return "Error in Encryption:With RSA ";   
} 

Answer 1

benim soruna bir çözüm problemi i ithalat çalışıyordu genel anahtar ASN1 formda değildi ve bu nedenle UWP Kriptografi Çekirdek yeni ASN1 için DER dönüşümü yapamadı bulduk Kod:

byte[] bytes = Encoding.UTF8.GetBytes(publicKeyString);    

IBuffer keyBuffer = CryptographicBuffer.DecodeFromBase64String(publicKeyString); 

AsymmetricKeyAlgorithmProvider provider = AsymmetricKeyAlgorithmProvider.OpenAlgorithm(AsymmetricAlgorithmNames.RsaPkcs1); 

CryptographicKey publicKey = provider.ImportPublicKey(keyBuffer,CryptographicPublicKeyBlobType.Pkcs1RsaPublicKey);` 

Answer 2

Aynı sorunla karşılaşıyorum: ASN1 hatalı etiket değeri karşılandı. ImportKeyPair (IBuffer) durumumun doğru olduğunu buldum. Örnek Kod:

var loginPBK = "";//your public key,such as "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCp0wHYbg......." 
var provider = AsymmetricKeyAlgorithmProvider.OpenAlgorithm(AsymmetricAlgorithmNames.RsaPkcs1); 
var publicKey = provider.ImportPublicKey(CryptographicBuffer.DecodeFromBase64String(loginPBK)); 
var encryptData = CryptographicEngine.Encrypt(publicKey, CryptographicBuffer.ConvertStringToBinary(password, BinaryStringEncoding.Utf8), null); 
var pwd2 = CryptographicBuffer.EncodeToBase64String(encryptData);