Hash of keys

In some contexts, the hash of a public key is easier to use than the key itself. For example, in Michelson, some data structures such as maps do not allow the key type. Also, hashes are much smaller than keys.

You can hash keys with the predefined function Crypto.hash_key, which returns a value of the type key_hash.

const check_hash_key = (kh1: key_hash, k2: key) => {

let kh2 = Crypto.hash_key(k2);

return [kh1 == kh2, kh2];

};