Struct ledger_mob_apdu::tx::TxMemoSign

pub struct TxMemoSign {
    pub kind: [u8; 2],
    pub payload_len: u8,
    pub reserved: u8,
    pub subaddress_index: u64,
    pub tx_public_key: TxOutPublic,
    pub target_view_public: SubaddressViewPublic,
    pub payload: [u8; 48],
}

Memo HMAC signing request

Encoding:

 0                   1                   2                   3
 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|          MEMO_KIND            |  PAYLOAD_LEN  |   RESERVED    |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                                                               |
/                        SUBADDRESS_INDEX                       /
/               (u64 subaddress for memo signing)               /
|                                                               |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                                                               |
/                         TX_PUBLIC_KEY                         /
/                (32-byte Ristretto Public Key)                 /
|                                                               |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                                                               |
/                     TARGET_VIEW_PUBLIC_KEY                    /
/                 (32-byte Ristretto Public Key)                /
|                                                               |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                                                               |
/                           PAYLOAD                             /
/                      (48-byte memo body)                      /
|                                                               |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

Fields

kind: [u8; 2]

Memo type

payload_len: u8

Payload length, always 48 bytes (included for future expansion)

reserved: u8

Reserved for future use, must be 0 (ensures 32-bit alignment)

subaddress_index: u64

Signing subaddress index

tx_public_key: TxOutPublic

TxOut public key

target_view_public: SubaddressViewPublic

Target view public subaddress

payload: [u8; 48]

Memo payload

Implementations

impl TxMemoSign

pub fn new<T: RingCtAddress>( subaddress_index: u64, tx_public_key: TxOutPublic, target: &T, kind: [u8; 2], payload: [u8; 48] ) -> Self

Create a new memo signing request with the provided target, kind, and payload

pub fn hash(&self) -> [u8; 32]

Compute hash for TxMemoSign object

Trait Implementations

impl ApduStatic for TxMemoSign

const CLA: u8 = 171u8

Class ID for APDU commands

const INS: u8 = 33u8

Instruction ID for APDU commands

fn p1(&self) -> u8

Fetch P1 value (defaults to 0 if not extended)

fn p2(&self) -> u8

Fetch P2 value (defaults to 0 if not extended)

impl Clone for TxMemoSign

fn clone(&self) -> TxMemoSign

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for TxMemoSign

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

Formats the value using the given formatter.

impl<'dec> Decode<'dec> for TxMemoSign

type Output = TxMemoSign

Output type (allows attaching lifetime bounds where required)

type Error = ApduError

Error type returned on parse error

fn decode(buff: &'dec [u8]) -> Result<(Self::Output, usize), Self::Error>

Decode consumes a slice and returns an object and decoded length.

impl Encode for TxMemoSign

type Error = ApduError

Error type returned on parse error

fn encode_len(&self) -> Result<usize, Self::Error>

Calculate expected encoded length for an object

fn encode(&self, buff: &mut [u8]) -> Result<usize, Self::Error>

Encode method writes object data to the provided writer

impl PartialEq<TxMemoSign> for TxMemoSign

fn eq(&self, other: &TxMemoSign) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for TxMemoSign