20 lines
613 B
Text
20 lines
613 B
Text
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Substitution Cipher Implementation - File Encryption/Decryption
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;Task:
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Encrypt an input/source file by replacing every upper/lower case alphabets of the source file with another predetermined upper/lower case alphabets or symbols and save it into another output/encrypted file and then again convert that output/encrypted file into original/decrypted file.
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This type of Encryption/Decryption scheme is often called a Substitution Cipher.
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;Related tasks:
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* [[Caesar cipher]]
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* [[Rot-13]]
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* [[Vigenère Cipher/Cryptanalysis]]
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;See also:
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* [[wp:Substitution_cipher|Wikipedia: Substitution cipher]]
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<br><br>
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