Merge pull request #67 from Mrizzi-96/fix/issue-59

Fixed issue 59: ASN1 corrupted data exception on linux

Author: DevTrevi

RuleValidators/DgcReader.RuleValidators.Italy/CertifiateExtendedKeyUsageUtils.cs

@@ -3,6 +3,7 @@
 using System.Linq;
 using Microsoft.Extensions.Logging;
 using DgcReader.Models;
+using System.Text;
 
 #if NETSTANDARD
 using System.Text;
@@ -55,7 +56,7 @@ public static IEnumerable<string> GetExtendedKeyUsages(SignatureValidationResult
                 return Enumerable.Empty<string>();
 
 #else
-                var certificate = new X509Certificate2(signatureValidation.PublicKeyData.Certificate);
+                var certificate = new X509Certificate2(signatureValidation.PublicKeyData.Certificate); 
                 var enhancedKeyExtensions = certificate.Extensions.OfType<X509EnhancedKeyUsageExtension>();
 
                 if (enhancedKeyExtensions == null)
@@ -82,7 +83,8 @@ private static byte[] AddPemHeaders(byte[] certificateData)
             const string PemHeader = "-----BEGIN CERTIFICATE-----";
             const string PemFooter = "-----END CERTIFICATE-----";
 
-            var decoded = Encoding.ASCII.GetString(certificateData);
+            var decoded = Convert.ToBase64String(certificateData);
+           
             if (!decoded.StartsWith(PemHeader) && !decoded.EndsWith(PemFooter))
             {
                 decoded = PemHeader + "\n" + decoded + "\n" + PemFooter;

TrustListProviders/DgcReader.TrustListProviders.Italy/ItalianTrustListProvider.cs

@@ -304,8 +304,9 @@ private async Task<IDictionary<string, byte[]>> GetCertificatesFromServer(Cancel
                 var response = await _httpClient.SendAsync(request, cancellationToken);
                 if (response.IsSuccessStatusCode)
                 {
-                    var content = await response.Content.ReadAsByteArrayAsync();
-
+                    var stringContent = await response.Content.ReadAsStringAsync();
+                    var content = Convert.FromBase64String(stringContent);
+                 
                     int? newToken = null;
                     if (response.Headers.TryGetValues(HeaderResumeToken, out var newTokens))
                     {

TrustListProviders/DgcReader.TrustListProviders.Italy/X509CertificatesUtils.cs

@@ -38,7 +38,7 @@ public static class X509CertificatesUtils
         public static CertificateData GetCertificateData(string kid, byte[] certificateBytes, ILogger? logger)
         {
 
-            var cert = new X509Certificate2(Convert.FromBase64String(Encoding.ASCII.GetString(certificateBytes)));
+            var cert = new X509Certificate2(certificateBytes);
             var keyAlgo = cert.GetKeyAlgorithm();
             var keyAlgoOid = Oid.FromOidValue(keyAlgo, OidGroup.PublicKeyAlgorithm);
 
@@ -145,7 +145,7 @@ private static byte[] AddPemHeaders(byte[] certificateData)
             const string PemHeader = "-----BEGIN CERTIFICATE-----";
             const string PemFooter = "-----END CERTIFICATE-----";
 
-            var decoded = Encoding.ASCII.GetString(certificateData);
+            var decoded = Convert.ToBase64String(certificateData);
             if (!decoded.StartsWith(PemHeader) && !decoded.EndsWith(PemFooter))
             {
                 decoded = PemHeader + "\n" + decoded + "\n" + PemFooter;