try fix for issuer subject key issue

Signed-off-by: lemccomb <117306942+lemccomb@users.noreply.github.com>
microsoft · Aug 3, 2023 · 9e0da5c · 9e0da5c
1 parent 8537680
commit 9e0da5c
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/CoseSignTool/CoseSign1.Tests.Common/TestCertificateUtils.cs b/CoseSignTool/CoseSign1.Tests.Common/TestCertificateUtils.cs
@@ -61,7 +61,8 @@ public static X509Certificate2 CreateCertificate(
             // support, so it needs to be copied from the Subject Key
             // Identifier of the signing certificate and massaged slightly.
             // AuthorityKeyIdentifier is "KeyID=<subject key identifier>"
-            byte[] issuerSubjectKey = issuingCa.Extensions?["Subject Key Identifier"]?.RawData ?? throw new ArgumentOutOfRangeException(nameof(issuingCa), @"Issuing CA did not a ""Subject Key Identifier"" extension present");
+            // byte[] issuerSubjectKey = issuingCa.Extensions?["Subject Key Identifier"]?.RawData ?? throw new ArgumentOutOfRangeException(nameof(issuingCa), @"Issuing CA did not a ""Subject Key Identifier"" extension present");
+            byte[] issuerSubjectKey = issuingCa.Extensions.First(x => x is X509SubjectKeyIdentifierExtension)?.RawData ?? throw new ArgumentOutOfRangeException(nameof(issuingCa), @"Issuing CA did not a ""Subject Key Identifier"" extension present");
             ArraySegment<byte> segment = new(issuerSubjectKey, 2, issuerSubjectKey.Length - 2);
             byte[] authorityKeyIdentifier = new byte[segment.Count + 4];
             // these bytes define the "KeyID" part of the AuthorityKeyIdentifer