openssl_private_decrypt

Encrypt using public key, decrypt using private key.Use this to store stuff in your database: Unless someonehas your private key, the database contents are useless.Also, use this for sending to a specific individual:  Gettheir public key, encrypt the message, only they can usetheir private key to decode it.<?phpecho "Source: $source";$fp=fopen("/path/to/certificate.crt","r");$pub_key=fread($fp,8192);fclose($fp);openssl_get_publickey($pub_key);/* * NOTE:  Here you use the $pub_key value (converted, I guess) */openssl_public_encrypt($source,$crypttext,$pub_key);echo "String crypted: $crypttext";$fp=fopen("/path/to/private.key","r");$priv_key=fread($fp,8192);fclose($fp);// $passphrase is required if your key is encoded (suggested)$res = openssl_get_privatekey($priv_key,$passphrase);/* * NOTE:  Here you use the returned resource value */openssl_private_decrypt($crypttext,$newsource,$res);echo "String decrypt : $newsource";?>