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allow test of eidas signitures #18

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Oct 17, 2017
Merged

allow test of eidas signitures #18

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57 changes: 50 additions & 7 deletions csharp/RocaTest/Program.cs
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Original file line number Diff line number Diff line change
@@ -1,23 +1,66 @@
using System;
using System;
using System.IO;
using Org.BouncyCastle.Crypto.Parameters;
using Org.BouncyCastle.X509;
using iTextSharp.text.pdf;
using System.Collections.Generic;
using System.Security.Cryptography.Pkcs;

namespace RocaTest
{
class Program
{
static void Main(string[] args)
{
foreach (string certFile in Directory.GetFiles("data"))
{
if (TestCert(certFile))
Console.WriteLine(certFile + " - contains RSA public key vulnerable to ROCA (CVE-2017-15361)");
else
Console.WriteLine(certFile + " - Certificate does not contain RSA public key vulnerable to ROCA (CVE-2017-15361)");
foreach (string certFile in Directory.GetFiles("data")) {
if (certFile.EndsWith(".pdf")) {
TestPDF(certFile);
} else {
if (certFile.EndsWith(".pem")) {
Console.WriteLine(certFile + " - contains RSA public key vulnerable to ROCA (CVE-2017-15361)");
} else {
Console.WriteLine(certFile + " - Certificate does not contain RSA public key vulnerable to ROCA (CVE-2017-15361)");
}
}
Console.ReadLine();
}
}
static void TestPDF(string path)
{
Console.WriteLine("processing PDF");
AcroFields acroFields = new PdfReader(path).AcroFields;
List<string> names = acroFields.GetSignatureNames();
foreach (var name in names) {
try {

Console.WriteLine(name);
PdfDictionary dict = acroFields.GetSignatureDictionary(name);

PdfString contents = (PdfString)PdfReader.GetPdfObject(dict.Get(PdfName.CONTENTS));


byte[] PKCS7 = contents.GetOriginalBytes();
var signedData = new SignedCms();
signedData.Decode(PKCS7);
Console.WriteLine(signedData.Certificates.Count);
int i = 0;
foreach (var certificate in signedData.Certificates) {
i++;

X509CertificateParser x509CertificateParser = new X509CertificateParser();
X509Certificate x509Certificate = x509CertificateParser.ReadCertificate(certificate.GetRawCertData());
RsaKeyParameters rsaKeyParameters = x509Certificate.GetPublicKey() as RsaKeyParameters;
if (RocaTest.IsVulnerable(rsaKeyParameters)) {
Console.WriteLine("Cetificate #" + i + " is vulnerable. Cert Hash: " + certificate.GetCertHashString());
} else {
Console.WriteLine("Cetificate #" + i + " is NOT vulnerable");
}
}
} catch (Exception exc) {
Console.WriteLine(exc.Message);
}
}
}
static bool TestCert(string certFile)
{
X509CertificateParser x509CertificateParser = new X509CertificateParser();
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