What Is Cryptography and How Does It Protect Data?
Photo: UseTheBitcoin
Key Takeaways Cryptography is the math used to scramble data with keys, letting only an authorized party read it, change it, or prove who sent it. The same math secures HTTPS browsing, messaging apps, and password managers, not just crypto wallets. Bitcoin verifies transactions with the ECDSA signature scheme, while newer networks like Solana use EdDSA to sign and verify faster. On September 21, 2026, every FIPS 140-2 cryptographic module moved to historical status under NIST's post-quantum migration.
Source: UseTheBitcoin
