public static string GetSubjectSummary(SafeSecCertificateHandle certificate)
{
if (certificate == null || certificate.IsInvalid)
{
throw new ArgumentNullException(nameof(certificate));
}
var subjectSummaryHandle = IntPtr.Zero;
try {
subjectSummaryHandle = SecCertificateCopySubjectSummary(certificate.DangerousGetHandle());
return(CFString.AsString(subjectSummaryHandle));
} finally {
if (subjectSummaryHandle != IntPtr.Zero)
{
CFObject.CFRelease(subjectSummaryHandle);
}
}
}
public static byte[] GetRawData(SafeSecCertificateHandle certificate)
{
if (certificate == null || certificate.IsInvalid)
{
throw new ArgumentNullException(nameof(certificate));
}
var dataPtr = SecCertificateCopyData(certificate.DangerousGetHandle());
if (dataPtr == IntPtr.Zero)
{
throw new ArgumentException("Not a valid certificate");
}
using (var data = new CFData(dataPtr, true)) {
var buffer = new byte[(int)data.Length];
Marshal.Copy(data.Bytes, buffer, 0, buffer.Length);
return(buffer);
}
}
public static bool Equals(SafeSecCertificateHandle first, SafeSecCertificateHandle second)
{
/*
* This is a little bit expensive, but unfortunately there is no better API to compare two
* SecCertificateRef's for equality.
*/
if (first == null || first.IsInvalid)
{
throw new ArgumentNullException(nameof(first));
}
if (second == null || second.IsInvalid)
{
throw new ArgumentNullException(nameof(second));
}
if (first.DangerousGetHandle() == second.DangerousGetHandle())
{
return(true);
}
var firstDataPtr = SecCertificateCopyData(first.DangerousGetHandle());
var secondDataPtr = SecCertificateCopyData(first.DangerousGetHandle());
try {
if (firstDataPtr == IntPtr.Zero || secondDataPtr == IntPtr.Zero)
{
throw new ArgumentException("Not a valid certificate.");
}
if (firstDataPtr == secondDataPtr)
{
return(true);
}
var firstLength = (int)CFData.CFDataGetLength(firstDataPtr);
var secondLength = (int)CFData.CFDataGetLength(secondDataPtr);
if (firstLength != secondLength)
{
return(false);
}
var firstBytePtr = CFData.CFDataGetBytePtr(firstDataPtr);
var secondBytePtr = CFData.CFDataGetBytePtr(secondDataPtr);
if (firstBytePtr == secondBytePtr)
{
return(true);
}
var firstBuffer = new byte[firstLength];
var secondBuffer = new byte[secondLength];
Marshal.Copy(firstBytePtr, firstBuffer, 0, firstBuffer.Length);
Marshal.Copy(secondBytePtr, secondBuffer, 0, secondBuffer.Length);
for (int i = 0; i < firstBuffer.Length; i++)
{
if (firstBuffer[i] != secondBuffer[i])
{
return(false);
}
}
return(true);
} finally {
if (firstDataPtr != null)
{
CFObject.CFRelease(firstDataPtr);
}
if (secondDataPtr != null)
{
CFObject.CFRelease(secondDataPtr);
}
}
}
