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Dynamic Substitution Cipher

1 starsPython

Ja1pr750 – Python cipher engine (18µs/char) + Decoding challenge

by User750·Mar 10, 2026·2 points·2 comments
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AI Analysis

●MidNiche Gem

Experimental cipher with 18µs/char speed, explicitly not for production use.

Strengths
  • •Dynamic S-box rotation per character is an interesting cryptographic technique
  • •Avalanche propagation ensures single-bit changes affect all subsequent bytes
  • •Clear educational disclaimers prevent dangerous production deployment
Weaknesses
  • •Zero stars and forks means no community validation or peer review
  • •Custom ciphers violate fundamental security principle: don't roll your own
Category
Security
Target Audience

Cryptography students, security researchers

Similar To

PyCryptodome · cryptography.io

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