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Add tests for Compute{Counter}Signature with attribute certificates #80195

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Merged
merged 1 commit into from
Jan 4, 2023
Merged

Add tests for Compute{Counter}Signature with attribute certificates #80195

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37 changes: 37 additions & 0 deletions src/libraries/System.Security.Cryptography.Pkcs/tests/SignedCms/SignedCmsTests.netcoreapp.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -654,6 +654,43 @@ public static void RemoveCertificate_NonExisting_CollectionContainsAttributeCert
}
}

[Fact]
public static void ComputeCounterSignature_PreservesAttributeCertificate()
{
SignedCms signedCms = new SignedCms();
signedCms.Decode(SignedDocuments.TstWithAttributeCertificate);
int countBefore = CountCertificateChoices(SignedDocuments.TstWithAttributeCertificate);

using (X509Certificate2 cert = Certificates.RSA2048SignatureOnly.TryGetCertificateWithPrivateKey())
{
CmsSigner signer = new CmsSigner(cert);
SignerInfo info = signedCms.SignerInfos[0];
info.ComputeCounterSignature(signer);
}

byte[] encoded = signedCms.Encode();
int countAfter = CountCertificateChoices(encoded);
Assert.Equal(countBefore + 1, countAfter);
}

[Fact]
public static void ComputeSignature_PreservesAttributeCertificate()
{
SignedCms signedCms = new SignedCms();
signedCms.Decode(SignedDocuments.TstWithAttributeCertificate);
int countBefore = CountCertificateChoices(SignedDocuments.TstWithAttributeCertificate);

using (X509Certificate2 cert = Certificates.RSA2048SignatureOnly.TryGetCertificateWithPrivateKey())
{
CmsSigner signer = new CmsSigner(cert);
signedCms.ComputeSignature(signer);
}

byte[] encoded = signedCms.Encode();
int countAfter = CountCertificateChoices(encoded);
Assert.Equal(countBefore + 1, countAfter);
}

private static void VerifyWithExplicitPrivateKey(X509Certificate2 cert, AsymmetricAlgorithm key)
{
using (var pubCert = new X509Certificate2(cert.RawData))
Expand Down