FulfillmentPreimageSha256 class

Represents a fulfillment with SHA-256 preimage in Dart. Crypto-Conditions Fulfillment

This class encapsulates the data related to a fulfillment with a SHA-256 preimage, including the fulfillment byte array and the corresponding condition byte array.

It provides a factory method, generate, to create an instance of FulfillmentPreimageSha256 based on a given preimage. The generation process involves creating ASN.1-encoded options for fingerprint, constant, and condition, which are then used to construct the encoded fulfillment and condition byte arrays. Usage example:

// Creating a FulfillmentPreimageSha256 instance with a preimage
List<int> preImage = [...];
FulfillmentPreimageSha256 fulfillment = FulfillmentPreimageSha256.generate(preImage);

// Accessing the hexadecimal string representations of fulfillment and condition
print(fulfillment.fulfillment);
print(fulfillment.condition);