2,000 Years of Secure Communication
Feb 14, 2026
Cryptography has evolved dramatically since Julius Caesar's simple shift ciphers. This article traces the development of cryptographic methods from ancient times to today's quantum-safe solutions.
Ancient to Modern
Caesar Cipher
Simple letter-substitution used by Roman military
Enigma Machine
Complex rotor-based system used in WWII
DES Encryption
64-bit block cipher dominating 1970s security
Modern Cryptographic Breakthroughs
- Public Key Cryptography (1977): Revolutionary RSA algorithm enables secure key exchange
- AES Encryption (2001): Advanced Encryption Standard becomes global standard
- Blockchain Signing: Elliptic Curve Cryptography secures decentralized transactions
"The history of cryptography is a constant dance between encryption complexity and attack capabilities."
Quantum Future
Quantum computing threatens current systems, but post-quantum algorithms like CRYSTALS-Dilithium are already being tested by NIST.
NIST Post-Quantum Cryptography
Quantum Immune Algorithms
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