it's for testing differents solutions.
using php nativ function
hash( string $algo, string $data, bool $binary = false, array $options = [] ): string
You can added salt to your $data
But this salt need to be unique for each entry and if you need to compare two hash like password entry and password saved
password_hash(string $password, string|int|null $algo, array $options = []): string
Using the Bcrypt Algorithm (currently the most functional)
Using the standard algo. You can found all :
hash_algos(): array
password_hash() with Bcrypt algorithm
Create a private key : $privkey = openssl_pkey_new();
Create a public key : $key_details = openssl_pkey_get_details($testprivatekey);