Struct TdxKeyPolicy 

pub struct TdxKeyPolicy(/* private fields */);

Selects which TD-specific measurement and configuration registers are mixed into the key derived by the TDG.MR.KEY.GET TDCALL. This is the analog of SNP’s GuestFieldSelect.

See TDKEYPOLICY, Table 2-2, “System Architecture Specification: Sealing Support for Intel TDX”, Revision 0.7, September 2025.

Implementations

impl TdxKeyPolicy

pub const fn new() -> Self

Creates a new default initialized bitfield.

pub const fn from_bits(bits: u64) -> Self

Convert from bits.

pub const fn into_bits(self) -> u64

Convert into bits.

pub const fn mr_td(&self) -> bool

Include MRTD (bit 0).

Bits: 0..1

pub const fn with_mr_td_checked(self, value: bool) -> Result<Self, ()>

Include MRTD (bit 0).

Bits: 0..1

pub const fn with_mr_td(self, value: bool) -> Self

Include MRTD (bit 0).

Bits: 0..1

pub const fn set_mr_td(&mut self, value: bool)

Include MRTD (bit 0).

Bits: 0..1

pub const fn set_mr_td_checked(&mut self, value: bool) -> Result<(), ()>

Include MRTD (bit 0).

Bits: 0..1

pub const fn mr_owner(&self) -> bool

Include MROWNER (bit 2).

Bits: 2..3

pub const fn with_mr_owner_checked(self, value: bool) -> Result<Self, ()>

Include MROWNER (bit 2).

Bits: 2..3

pub const fn with_mr_owner(self, value: bool) -> Self

Include MROWNER (bit 2).

Bits: 2..3

pub const fn set_mr_owner(&mut self, value: bool)

Include MROWNER (bit 2).

Bits: 2..3

pub const fn set_mr_owner_checked(&mut self, value: bool) -> Result<(), ()>

Include MROWNER (bit 2).

Bits: 2..3

pub const fn mr_config_id(&self) -> bool

Include MRCONFIGID (bit 3).

Bits: 3..4

pub const fn with_mr_config_id_checked(self, value: bool) -> Result<Self, ()>

Include MRCONFIGID (bit 3).

Bits: 3..4

pub const fn with_mr_config_id(self, value: bool) -> Self

Include MRCONFIGID (bit 3).

Bits: 3..4

pub const fn set_mr_config_id(&mut self, value: bool)

Include MRCONFIGID (bit 3).

Bits: 3..4

pub const fn set_mr_config_id_checked(&mut self, value: bool) -> Result<(), ()>

Include MRCONFIGID (bit 3).

Bits: 3..4

pub const fn mr_owner_config(&self) -> bool

Include MROWNERCONFIG (bit 4).

Bits: 4..5

pub const fn with_mr_owner_config_checked(self, value: bool) -> Result<Self, ()>

Include MROWNERCONFIG (bit 4).

Bits: 4..5

pub const fn with_mr_owner_config(self, value: bool) -> Self

Include MROWNERCONFIG (bit 4).

Bits: 4..5

pub const fn set_mr_owner_config(&mut self, value: bool)

Include MROWNERCONFIG (bit 4).

Bits: 4..5

pub const fn set_mr_owner_config_checked( &mut self, value: bool, ) -> Result<(), ()>

Include MROWNERCONFIG (bit 4).

Bits: 4..5

pub const fn rtmr(&self) -> u16

RTMR selection (bits 47:32). Bits 4:0 select RTMR n, bits 7:5 are reserved and must be zero.

Bits: 32..48

pub const fn with_rtmr_checked(self, value: u16) -> Result<Self, ()>

RTMR selection (bits 47:32). Bits 4:0 select RTMR n, bits 7:5 are reserved and must be zero.

Bits: 32..48

pub const fn with_rtmr(self, value: u16) -> Self

RTMR selection (bits 47:32). Bits 4:0 select RTMR n, bits 7:5 are reserved and must be zero.

Bits: 32..48

pub const fn set_rtmr(&mut self, value: u16)

RTMR selection (bits 47:32). Bits 4:0 select RTMR n, bits 7:5 are reserved and must be zero.

Bits: 32..48

pub const fn set_rtmr_checked(&mut self, value: u16) -> Result<(), ()>

RTMR selection (bits 47:32). Bits 4:0 select RTMR n, bits 7:5 are reserved and must be zero.

Bits: 32..48

Trait Implementations

impl Clone for TdxKeyPolicy

fn clone(&self) -> TdxKeyPolicy

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for TdxKeyPolicy

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for TdxKeyPolicy

fn default() -> Self

Returns the “default value” for a type.

impl From<TdxKeyPolicy> for u64

fn from(v: TdxKeyPolicy) -> u64

Converts to this type from the input type.

impl From<u64> for TdxKeyPolicy

fn from(v: u64) -> Self

Converts to this type from the input type.

impl FromBytes for TdxKeyPolicy

where u64: FromBytes,

fn ref_from_bytes( source: &[u8], ) -> Result<&Self, ConvertError<AlignmentError<&[u8], Self>, SizeError<&[u8], Self>, Infallible>>

where Self: KnownLayout + Immutable,

Interprets the given source as a &Self.

fn ref_from_prefix( source: &[u8], ) -> Result<(&Self, &[u8]), ConvertError<AlignmentError<&[u8], Self>, SizeError<&[u8], Self>, Infallible>>

where Self: KnownLayout + Immutable,

Interprets the prefix of the given source as a &Self without copying.

fn ref_from_suffix( source: &[u8], ) -> Result<(&[u8], &Self), ConvertError<AlignmentError<&[u8], Self>, SizeError<&[u8], Self>, Infallible>>

where Self: Immutable + KnownLayout,

Interprets the suffix of the given bytes as a &Self.

fn mut_from_bytes( source: &mut [u8], ) -> Result<&mut Self, ConvertError<AlignmentError<&mut [u8], Self>, SizeError<&mut [u8], Self>, Infallible>>

where Self: IntoBytes + KnownLayout,

Interprets the given source as a &mut Self.

fn mut_from_prefix( source: &mut [u8], ) -> Result<(&mut Self, &mut [u8]), ConvertError<AlignmentError<&mut [u8], Self>, SizeError<&mut [u8], Self>, Infallible>>

where Self: IntoBytes + KnownLayout,

Interprets the prefix of the given source as a &mut Self without copying.

fn mut_from_suffix( source: &mut [u8], ) -> Result<(&mut [u8], &mut Self), ConvertError<AlignmentError<&mut [u8], Self>, SizeError<&mut [u8], Self>, Infallible>>

where Self: IntoBytes + KnownLayout,

Interprets the suffix of the given source as a &mut Self without copying.

fn read_from_bytes(source: &[u8]) -> Result<Self, SizeError<&[u8], Self>>

where Self: Sized,

Reads a copy of Self from the given source.

fn read_from_prefix( source: &[u8], ) -> Result<(Self, &[u8]), SizeError<&[u8], Self>>

where Self: Sized,

Reads a copy of Self from the prefix of the given source.

fn read_from_suffix( source: &[u8], ) -> Result<(&[u8], Self), SizeError<&[u8], Self>>

where Self: Sized,

Reads a copy of Self from the suffix of the given source.

impl FromZeros for TdxKeyPolicy

where u64: FromZeros,

fn zero(&mut self)

Overwrites self with zeros.

fn new_zeroed() -> Self

where Self: Sized,

Creates an instance of Self from zeroed bytes.

fn new_box_zeroed() -> Result<Box<Self>, AllocError>

where Self: Sized,

Creates a Box<Self> from zeroed bytes.

fn new_vec_zeroed(len: usize) -> Result<Vec<Self>, AllocError>

where Self: Sized,

Creates a Vec<Self> from zeroed bytes.

fn extend_vec_zeroed( v: &mut Vec<Self>, additional: usize, ) -> Result<(), AllocError>

where Self: Sized,

Extends a Vec<Self> by pushing additional new items onto the end of the vector. The new items are initialized with zeros.

fn insert_vec_zeroed( v: &mut Vec<Self>, position: usize, additional: usize, ) -> Result<(), AllocError>

where Self: Sized,

Inserts additional new items into Vec<Self> at position. The new items are initialized with zeros.

impl IntoBytes for TdxKeyPolicy

where u64: IntoBytes,

fn as_bytes(&self) -> &[u8]

where Self: Immutable,

Gets the bytes of this value.

fn as_mut_bytes(&mut self) -> &mut [u8]

where Self: FromBytes,

Gets the bytes of this value mutably.

fn write_to(&self, dst: &mut [u8]) -> Result<(), SizeError<&Self, &mut [u8]>>

where Self: Immutable,

Writes a copy of self to dst.

fn write_to_prefix( &self, dst: &mut [u8], ) -> Result<(), SizeError<&Self, &mut [u8]>>

where Self: Immutable,

Writes a copy of self to the prefix of dst.

fn write_to_suffix( &self, dst: &mut [u8], ) -> Result<(), SizeError<&Self, &mut [u8]>>

where Self: Immutable,

Writes a copy of self to the suffix of dst.

impl KnownLayout for TdxKeyPolicy

where Self: Sized,

type PointerMetadata = ()

The type of metadata stored in a pointer to Self.

fn size_for_metadata(meta: Self::PointerMetadata) -> Option<usize>

Computes the size of an object of type Self with the given pointer metadata.

impl TryFromBytes for TdxKeyPolicy

where u64: TryFromBytes,

fn try_ref_from_bytes( source: &[u8], ) -> Result<&Self, ConvertError<AlignmentError<&[u8], Self>, SizeError<&[u8], Self>, ValidityError<&[u8], Self>>>

where Self: KnownLayout + Immutable,

Attempts to interpret the given source as a &Self.

fn try_ref_from_prefix( source: &[u8], ) -> Result<(&Self, &[u8]), ConvertError<AlignmentError<&[u8], Self>, SizeError<&[u8], Self>, ValidityError<&[u8], Self>>>

where Self: KnownLayout + Immutable,

Attempts to interpret the prefix of the given source as a &Self.

fn try_ref_from_suffix( source: &[u8], ) -> Result<(&[u8], &Self), ConvertError<AlignmentError<&[u8], Self>, SizeError<&[u8], Self>, ValidityError<&[u8], Self>>>

where Self: KnownLayout + Immutable,

Attempts to interpret the suffix of the given source as a &Self.

fn try_mut_from_bytes( bytes: &mut [u8], ) -> Result<&mut Self, ConvertError<AlignmentError<&mut [u8], Self>, SizeError<&mut [u8], Self>, ValidityError<&mut [u8], Self>>>

where Self: KnownLayout + IntoBytes,

Attempts to interpret the given source as a &mut Self without copying.

fn try_mut_from_prefix( source: &mut [u8], ) -> Result<(&mut Self, &mut [u8]), ConvertError<AlignmentError<&mut [u8], Self>, SizeError<&mut [u8], Self>, ValidityError<&mut [u8], Self>>>

where Self: KnownLayout + IntoBytes,

Attempts to interpret the prefix of the given source as a &mut Self.

fn try_mut_from_suffix( source: &mut [u8], ) -> Result<(&mut [u8], &mut Self), ConvertError<AlignmentError<&mut [u8], Self>, SizeError<&mut [u8], Self>, ValidityError<&mut [u8], Self>>>

where Self: KnownLayout + IntoBytes,

Attempts to interpret the suffix of the given source as a &mut Self.

fn try_read_from_bytes( source: &[u8], ) -> Result<Self, ConvertError<Infallible, SizeError<&[u8], Self>, ValidityError<&[u8], Self>>>

where Self: Sized,

Attempts to read the given source as a Self.

fn try_read_from_prefix( source: &[u8], ) -> Result<(Self, &[u8]), ConvertError<Infallible, SizeError<&[u8], Self>, ValidityError<&[u8], Self>>>

where Self: Sized,

Attempts to read a Self from the prefix of the given source.

fn try_read_from_suffix( source: &[u8], ) -> Result<(&[u8], Self), ConvertError<Infallible, SizeError<&[u8], Self>, ValidityError<&[u8], Self>>>

where Self: Sized,

Attempts to read a Self from the suffix of the given source.

impl Copy for TdxKeyPolicy

impl Immutable for TdxKeyPolicy

where u64: Immutable,