ripple::cryptoconditions::PreimageSha256 Class Reference

#include <PreimageSha256.h>

Inheritance diagram for ripple::cryptoconditions::PreimageSha256:

Collaboration diagram for ripple::cryptoconditions::PreimageSha256:

Public Member Functions
	PreimageSha256 (Buffer &&b) noexcept
	PreimageSha256 (Slice s) noexcept
Type	type () const override
	Returns the type of this condition.
Buffer	fingerprint () const override
	Returns the fulfillment's fingerprint:
std::uint32_t	cost () const override
	Calculates the cost associated with this fulfillment.
Condition	condition () const override
	Returns the condition associated with the given fulfillment.
bool	validate (Slice) const override
	Validates a fulfillment.

Static Public Member Functions
static std::unique_ptr< Fulfillment >	deserialize (Slice s, std::error_code &ec)
	Parse the payload for a PreimageSha256 condition.

Static Public Attributes
static constexpr std::size_t	maxPreimageLength = 128
	The maximum allowed length of a preimage.
static constexpr std::size_t	maxSerializedFulfillment = 256
	The largest binary fulfillment we support.

Private Attributes
Buffer	payload_

Detailed Description

Definition at line 17 of file PreimageSha256.h.

Constructor & Destructor Documentation

PreimageSha256() [1/2]

ripple::cryptoconditions::PreimageSha256::PreimageSha256 ( Buffer &&  b )

noexcept

Definition at line 88 of file PreimageSha256.h.

PreimageSha256() [2/2]

ripple::cryptoconditions::PreimageSha256::PreimageSha256 ( Slice  s )

noexcept

Definition at line 92 of file PreimageSha256.h.

Member Function Documentation

deserialize()

static std::unique_ptr< Fulfillment > ripple::cryptoconditions::PreimageSha256::deserialize ( Slice  s, std::error_code &  ec  )

static

Parse the payload for a PreimageSha256 condition.

Parameters

s	A slice containing the DER encoded payload
ec	indicates success or failure of the operation

Returns

the preimage, if successful; empty pointer otherwise.

Definition at line 38 of file PreimageSha256.h.

type()

Type ripple::cryptoconditions::PreimageSha256::type ( ) const

overridevirtual

Returns the type of this condition.

Implements ripple::cryptoconditions::Fulfillment.

Definition at line 97 of file PreimageSha256.h.

fingerprint()

Buffer ripple::cryptoconditions::PreimageSha256::fingerprint ( ) const

overridevirtual

Returns the fulfillment's fingerprint:

The fingerprint is an octet string uniquely representing this fulfillment's condition with respect to other conditions of the same type.

Implements ripple::cryptoconditions::Fulfillment.

Definition at line 103 of file PreimageSha256.h.

cost()

std::uint32_t ripple::cryptoconditions::PreimageSha256::cost ( ) const

overridevirtual

Calculates the cost associated with this fulfillment.

• The cost function is deterministic and depends on the type and properties of the condition and the fulfillment that the condition is generated from.

Implements ripple::cryptoconditions::Fulfillment.

Definition at line 112 of file PreimageSha256.h.

condition()

Condition ripple::cryptoconditions::PreimageSha256::condition ( ) const

overridevirtual

Returns the condition associated with the given fulfillment.

This process is completely deterministic. All implementations will, if compliant, produce the identical condition for the same fulfillment.

Implements ripple::cryptoconditions::Fulfillment.

Definition at line 118 of file PreimageSha256.h.

validate()

bool ripple::cryptoconditions::PreimageSha256::validate ( Slice  data ) const

overridevirtual

Validates a fulfillment.

Implements ripple::cryptoconditions::Fulfillment.

Definition at line 124 of file PreimageSha256.h.

Member Data Documentation

maxPreimageLength

constexpr std::size_t ripple::cryptoconditions::PreimageSha256::maxPreimageLength = 128

staticconstexpr

The maximum allowed length of a preimage.

The specification does not specify a minimum supported length, nor does it require all conditions to support the same minimum length.

While future versions of this code will never lower this limit, they may opt to raise it.

Definition at line 29 of file PreimageSha256.h.

payload_

Buffer ripple::cryptoconditions::PreimageSha256::payload_

private

Definition at line 85 of file PreimageSha256.h.

maxSerializedFulfillment

constexpr std::size_t ripple::cryptoconditions::Fulfillment::maxSerializedFulfillment = 256

staticconstexprinherited

The largest binary fulfillment we support.

Note

This value will be increased in the future, but it must never decrease, as that could cause fulfillments that were previously considered valid to no longer be allowed.

Definition at line 22 of file Fulfillment.h.