/// <summary>
/// Create another instance of SafeEvpPKeyHandle which has an independent lifetime
/// from this instance, but tracks the same resource.
/// </summary>
/// <returns>An equivalent SafeEvpPKeyHandle with a different lifetime</returns>
public SafeEvpPKeyHandle DuplicateHandle()
{
if (IsInvalid)
throw new InvalidOperationException(SR.Cryptography_OpenInvalidHandle);
// 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(this);
// 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);
return safeHandle;
}
/// <summary>
/// Create another instance of SafeEvpPKeyHandle which has an independent lifetime
/// from this instance, but tracks the same resource.
/// </summary>
/// <returns>An equivalent SafeEvpPKeyHandle with a different lifetime</returns>
public SafeEvpPKeyHandle DuplicateHandle()
{
if (IsInvalid)
throw new InvalidOperationException(SR.Cryptography_OpenInvalidHandle);
// 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(this);
// 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.Crypto.CreateOpenSslCryptographicException();
}
// Since we didn't actually create a new handle, copy the handle
// to the new SafeHandle.
safeHandle.SetHandle(handle);
return safeHandle;
}
/// <summary>
/// Create another instance of SafeEvpPKeyHandle which has an independent lifetime
/// from this instance, but tracks the same resource.
/// </summary>
/// <returns>An equivalent SafeEvpPKeyHandle with a different lifetime</returns>
public SafeEvpPKeyHandle DuplicateHandle()
{
if (IsInvalid)
{
throw new InvalidOperationException(SR.Cryptography_OpenInvalidHandle);
}
// 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 success = Interop.Crypto.UpRefEvpPkey(this);
if (success != 1)
{
Debug.Fail("Called UpRefEvpPkey on a key which was already marked for destruction");
Exception e = Interop.Crypto.CreateOpenSslCryptographicException();
safeHandle.Dispose();
throw e;
}
// Since we didn't actually create a new handle, copy the handle
// to the new SafeHandle.
safeHandle.SetHandle(handle);
return(safeHandle);
}