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Condition and fulfillment in escrow #698

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@ckeshava ckeshava commented Mar 22, 2024

High Level Overview of Change

Provide utility functions to generate cryptographic condition and fulfillment for conditional escrows.

Type of Change

  • Bug fix (non-breaking change which fixes an issue)
  • New feature (non-breaking change which adds functionality)
  • Breaking change (fix or feature that would cause existing functionality to not work as expected)
  • Refactor (non-breaking change that only restructures code)
  • Tests (You added tests for code that already exists, or your new feature included in this PR)
  • Documentation Updates
  • Release

Did you update CHANGELOG.md?

  • Yes
  • No, this change does not impact library users

Test Plan

Included unit test and snippet test to validate the working of generate_crypto_conditions function.

This work was inspired by the PR by author and also the XRPL tutorials

Many thanks to both these sources.

from typing import Dict, Optional, TypedDict

# CK: TODO Find a py.typed or library stub for cryptoconditions
from cryptoconditions import PreimageSha256 # type: ignore
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Please let me know if you have any ideas to get mypy to work with a cryptographic library

cancel_after=datetime_to_ripple_time(datetime.now()) + 100,
)

create_escrow_response = submit_and_wait(create_tx, client, wallet1)
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I have empirically observed that the generated cryptographic condition always begins with A0258020... and ends with ...810120. I don't have statistical numbers to prove my point, but the outputs from this library do not appear random, despite varying secret inputs.

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New dependencies detected. Learn more about Socket for GitHub ↗︎

Package New capabilities Transitives Size Publisher
pypi/[email protected] environment, eval, filesystem, unsafe 0 580 kB Armin.Rigo, alexgaynor, fijal, ...5 more
pypi/[email protected] environment, eval, filesystem 0 97.7 kB bigchaindb, troymc

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