26 lines
604 B
Python
26 lines
604 B
Python
# Based on https://github.com/AllAlgorithms, python/algorithms/math/caesar_cipher.py
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def encrypt(strng: str, key: int) -> str:
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assert 0 < key <= 94
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encrypted = ''
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for x in strng:
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indx = (ord(x) + key) % 256
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if indx > 126:
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indx = indx - 95
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encrypted = encrypted + chr(indx)
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return encrypted
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def decrypt(strng: str, key: int) -> str:
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assert 0 < key <= 94
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decrypted = ''
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for x in strng:
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indx = (ord(x) - key) % 256
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if indx < 32:
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indx = indx + 95
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decrypted = decrypted + chr(indx)
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return decrypted
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