internal static SafeEvpPkeyHandle DuplicateHandle(SafeEvpPkeyHandle handle)
{
Debug.Assert(handle != null && !handle.IsInvalid);
// Reliability: Allocate the SafeHandle before calling UpRefEvpPkey so
// that we don't lose a tracked reference in low-memory situations.
SafeEvpPkeyHandle safeHandle = new SafeEvpPkeyHandle();
int newRefCount = Interop.NativeCrypto.UpRefEvpPkey(handle);
// UpRefEvpPkey returns the number of references to this key, if it's less than 2
// (the incoming handle, and this one) then someone has already Disposed() this key
// into non-existence.
if (newRefCount < 2)
{
Debug.Fail("Called UpRefEvpPkey on a key which was already marked for destruction");
throw Interop.libcrypto.CreateOpenSslCryptographicException();
}
// Since we didn't actually create a new handle, copy the handle
// to the new SafeHandle.
safeHandle.SetHandle(handle.DangerousGetHandle());
return safeHandle;
}
internal static SafeEvpPkeyHandle DuplicateHandle(SafeEvpPkeyHandle handle)
{
Debug.Assert(handle != null && !handle.IsInvalid);
// Reliability: Allocate the SafeHandle before calling UpRefEvpPkey so
// that we don't lose a tracked reference in low-memory situations.
SafeEvpPkeyHandle safeHandle = new SafeEvpPkeyHandle();
int newRefCount = Interop.Crypto.UpRefEvpPkey(handle);
// UpRefEvpPkey returns the number of references to this key, if it's less than 2
// (the incoming handle, and this one) then someone has already Disposed() this key
// into non-existence.
if (newRefCount < 2)
{
Debug.Fail("Called UpRefEvpPkey on a key which was already marked for destruction");
throw Interop.libcrypto.CreateOpenSslCryptographicException();
}
// Since we didn't actually create a new handle, copy the handle
// to the new SafeHandle.
safeHandle.SetHandle(handle.DangerousGetHandle());
return(safeHandle);
}
