A cryptographic key that is used with an algorithm to encrypt and decrypt data. A cryptocurrencyA digital currency running on a blockchain and built with cryptography. Contrary to central-bank issued currency, cryptocurrency issuance rules are... More private key lets you access funds in a walletA crypto wallet is a user-friendly software or hardware used to manage private keys. There are software wallets for desktop... More. The usual mnemonic phrase (12 or more random words) offered by wallets to recover your funds in other devices is a “summary” of this private key. Check more here.