core::arch::x86_64

Function _mm_encodekey128_u32

Source 
pub unsafe fn _mm_encodekey128_u32(
    key_params: u32,
    key: __m128i,
    handle: *mut u8,
) -> u32
🔬This is a nightly-only experimental API. (keylocker_x86 #134813)
Available on (x86 or x86-64) and target feature kl and x86-64 only.
Expand description

Wrap a 128-bit AES key into a 384-bit key handle and stores it in handle. Returns the control parameter used to create the IWKey.

  • key_params[0]: If set, this key can only be used by the Kernel.
  • key_params[1]: If set, this key can not be used to encrypt.
  • key_params[2]: If set, this key can not be used to decrypt.
  • key_params[31:3]: Reserved for future use, must be set to 0.

Note that these restrictions need hardware support, and the supported restrictions can be found by calling __cpuid(0x19) and checking the EAX[0:2] bits. Failing to follow these restrictions may result in a General Protection Exception.

Intel’s documentation