🛡️ Implement classical ciphers using a pure POSIX approach; explore encryption and decryption methods without bashisms in a fun coding project.
          java          library          cpp          ascii          rot13          encrypt          decrypt          hill-cipher          caesar-cipher          classical-ciphers          playfair-cipher          ceaser-cipher          railfence-cipher          trithemius-cipher          introduction-to-cryptography          beaufort-cipher          atbash-cipher          nihilist-cipher      
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Sep 7, 2025  - PHP