라바 램프의 무용성: 무작위가 실제로 의미하는 것

While Cloudflare promotes lava lamp-based randomness generation as enhancing internet security, this article argues it is primarily marketing rather than substantive security innovation. The key insight is that cryptographic strength depends not on the inherent randomness of values but on the attacker's knowledge gap—a principle illustrated through one-time pad analysis and information theory. Modern CSPRNG-based stream ciphers like ChaCha20 and AES-256-CTR with 256-bit keys provide sufficient security without exotic randomness sources, making physical entropy injection unnecessary.