Instead, anyone who wants to send or receive cryptocurrency creates a “cryptographic key” — a file containing a random secret code — that can then ...
source https://www.google.com/url?rct=j&sa=t&url=https://blog.coinbase.com/the-keys-to-keeping-your-crypto-safe-96d497cce6cf&ct=ga&cd=CAIyGmM2Nzk3ODA2ZWViNjVjODI6Y29tOmVuOlVT&usg=AFQjCNF95XrZ6oWeqSMHCz5z157xM268-g
