Struct SignatureInFlash 

#[repr(C)]
pub struct SignatureInFlash {
    pub _jal_instruction: u32,
    pub signature: [u8; 64],
    pub aad_len: u32,
    pub aad: [u8; 60],
    pub sealed_data: SealedFields,
}

Representation of the signature block in memory.

Fields

_jal_instruction: u32

This is a field that contains a jump instruction such that the CPU boot passes over this structure on the way to the boot code.

signature: [u8; 64]

The actual signature.

aad_len: u32

aad_len also specifies the signing protocol. If it is 0, then a pure ed25519ph signature is assumed. If it is greater than 0, then it’s assumed to be a FIDO2/WebAuthn signature format using ed25519, where the signature is computed as: signature = Ed25519.sign(authenticatorData || SHA-256(clientData)) authenticatorData is a field that is at least 37 bytes in size. The size is influenced by the type of signing and operation, but for our implementation I think it stays fixed at 37 bytes.

aad: [u8; 60]

sealed_data: SealedFields

All data from this point onward are included in the signature computation.

Implementations

impl SignatureInFlash

pub const fn sealed_data_offset() -> usize

Trait Implementations

impl AsMut<[u8]> for SignatureInFlash

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

Converts this type into a mutable reference of the (usually inferred) input type.

impl AsRef<[u8]> for SignatureInFlash

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

Converts this type into a shared reference of the (usually inferred) input type.

impl Clone for SignatureInFlash

fn clone(&self) -> SignatureInFlash

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for SignatureInFlash

fn default() -> Self

Returns the “default value” for a type.

impl Zeroable for SignatureInFlash

fn zeroed() -> Self

Calls zeroed.

impl Copy for SignatureInFlash

impl Pod for SignatureInFlash