Struct EncodedPayload 

pub struct EncodedPayload { /* private fields */ }

EncodedPayload represents a payload that has had an encoding applied to it.

Encoding Format:

The encoded payload consists of two parts:

1. Header (32 bytes):

   • Byte 0: Always 0x00 (reserved)
   • Byte 1: Encoding Version byte (e.g., 0x00 for PayloadEncodingVersion::Zero)
   • Bytes 2-5: Big-endian u32 representing the original payload length
   • Bytes 6-31: Reserved (filled with 0x00)

2. Data (multiple of 32 bytes): Each 32-byte chunk contains:

   • Byte 0: 0x00 (padding byte to ensure the data is in valid field element range)
   • Bytes 1-31: 31 bytes of actual payload data (or padding for the last chunk)

The padding ensures that all data is compatible with the bn254 curve’s field element limitations, as each 32-byte segment represents a field element.

Implementations

impl EncodedPayload

pub fn new(payload: &Payload) -> Result<EncodedPayload, ConversionError>

Creates a new EncodedPayload from a Payload, performing the PayloadEncodingVersion0 encoding.

pub fn decode(&self) -> Result<Payload, ConversionError>

Decodes the EncodedPayload back into a Payload.

pub fn to_field_elements(&self) -> Vec<Fr>

Converts the encoded payload to an array of field elements.

pub fn from_field_elements( field_elements: &[Fr], max_payload_length: usize, ) -> Result<EncodedPayload, ConversionError>

Creates an EncodedPayload from an array of field elements. max_payload_length is the maximum length in bytes that the contained Payload is permitted to be.

Trait Implementations

impl Debug for EncodedPayload

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

Formats the value using the given formatter.

impl PartialEq for EncodedPayload

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl StructuralPartialEq for EncodedPayload