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Implementation of SHA-256 using Python #5532

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merged 11 commits into from Oct 23, 2021
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@Yathu2007 Yathu2007 commented Oct 22, 2021

Describe your change:

Implementation of SHA-256 using pure Python. Have used the Black Formatter.

References
https://qvault.io/cryptography/how-sha-2-works-step-by-step-sha-256/ (in detail)
https://en.wikipedia.org/wiki/SHA-2 (Pseudocode)

  • Add an algorithm?
  • Fix a bug or typo in an existing algorithm?
  • Documentation change?

Checklist:

  • I have read CONTRIBUTING.md.
  • This pull request is all my own work -- I have not plagiarized.
  • I know that pull requests will not be merged if they fail the automated tests.
  • This PR only changes one algorithm file. To ease review, please open separate PRs for separate algorithms.
  • All new Python files are placed inside an existing directory.
  • All filenames are in all lowercase characters with no spaces or dashes.
  • All functions and variable names follow Python naming conventions.
  • All function parameters and return values are annotated with Python type hints.
  • All functions have doctests that pass the automated testing.
  • All new algorithms have a URL in its comments that points to Wikipedia or other similar explanation.
  • If this pull request resolves one or more open issues then the commit message contains Fixes: #{$ISSUE_NO}.

@ghost ghost added awaiting reviews This PR is ready to be reviewed require tests Tests [doctest/unittest/pytest] are required require type hints https://docs.python.org/3/library/typing.html labels Oct 22, 2021
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@ghost ghost removed the require type hints https://docs.python.org/3/library/typing.html label Oct 22, 2021
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@ghost ghost added awaiting changes A maintainer has requested changes to this PR tests are failing Do not merge until tests pass and removed awaiting reviews This PR is ready to be reviewed labels Oct 23, 2021
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@ghost ghost added awaiting reviews This PR is ready to be reviewed and removed awaiting changes A maintainer has requested changes to this PR labels Oct 23, 2021
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Test class for the SHA256 class. Inherits the TestCase class from unittest
"""

def test_match_hashes(self) -> None:
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As there is no test file in this pull request nor any test function or class in the file hashes/sha256.py, please provide doctest for the function test_match_hashes

self.assertEqual(SHA256(msg).hash, hashlib.sha256(msg).hexdigest())


def main() -> None:
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As there is no test file in this pull request nor any test function or class in the file hashes/sha256.py, please provide doctest for the function main

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Test class for the SHA256 class. Inherits the TestCase class from unittest
"""

def test_match_hashes(self) -> None:
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As there is no test file in this pull request nor any test function or class in the file hashes/sha256.py, please provide doctest for the function test_match_hashes

self.assertEqual(SHA256(msg).hash, hashlib.sha256(msg).hexdigest())


def main() -> None:
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As there is no test file in this pull request nor any test function or class in the file hashes/sha256.py, please provide doctest for the function main

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Test class for the SHA256 class. Inherits the TestCase class from unittest
"""

def test_match_hashes(self) -> None:
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As there is no test file in this pull request nor any test function or class in the file hashes/sha256.py, please provide doctest for the function test_match_hashes

self.assertEqual(SHA256(msg).hash, hashlib.sha256(msg).hexdigest())


def main() -> None:
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As there is no test file in this pull request nor any test function or class in the file hashes/sha256.py, please provide doctest for the function main

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Test class for the SHA256 class. Inherits the TestCase class from unittest
"""

def test_match_hashes(self) -> None:
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As there is no test file in this pull request nor any test function or class in the file hashes/sha256.py, please provide doctest for the function test_match_hashes

self.assertEqual(SHA256(msg).hash, hashlib.sha256(msg).hexdigest())


def main() -> None:
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As there is no test file in this pull request nor any test function or class in the file hashes/sha256.py, please provide doctest for the function main

@ghost ghost removed the tests are failing Do not merge until tests pass label Oct 23, 2021
@ghost ghost added the require type hints https://docs.python.org/3/library/typing.html label Oct 23, 2021
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hashes/sha256.py Outdated
self.final_hash()

@staticmethod
def preprocessing(data) -> bytes:
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Please provide type hint for the parameter: data

Test class for the SHA256 class. Inherits the TestCase class from unittest
"""

def test_match_hashes(self) -> None:
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As there is no test file in this pull request nor any test function or class in the file hashes/sha256.py, please provide doctest for the function test_match_hashes

self.assertEqual(SHA256(msg).hash, hashlib.sha256(msg).hexdigest())


def main() -> None:
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As there is no test file in this pull request nor any test function or class in the file hashes/sha256.py, please provide doctest for the function main

@ghost ghost removed the require type hints https://docs.python.org/3/library/typing.html label Oct 23, 2021
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Test class for the SHA256 class. Inherits the TestCase class from unittest
"""

def test_match_hashes(self) -> None:
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As there is no test file in this pull request nor any test function or class in the file hashes/sha256.py, please provide doctest for the function test_match_hashes

self.assertEqual(SHA256(msg).hash, hashlib.sha256(msg).hexdigest())


def main() -> None:
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As there is no test file in this pull request nor any test function or class in the file hashes/sha256.py, please provide doctest for the function main

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Awesome!

@ghost ghost removed the awaiting reviews This PR is ready to be reviewed label Oct 23, 2021
@cclauss cclauss merged commit 218d892 into TheAlgorithms:master Oct 23, 2021
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