Cryptography is the math that secures a blockchain; it proves transaction authorization and shows that records have not been altered. Two aspects do the lion’s share of the work: digital signatures, which prove ownership without revealing your private key, and hash functions, which detect any change to stored data. Despite the name, very little in crypto is actually encrypted; almost everything is public and signed. Want to learn more and get started? Learn how private keys work and get your Solflare wallet.