RSA encrypted Transfer (PHP)

RSA Encrypted Transport:

For the first contact with RSA encryption of children's shoes, it is likely to be wound in. Recently wrote a request for RSA encryption transmission, summed up a bit. I hope I can help you a little.

The first step is to understand the following points:

1: The public key and the private key must be paired in order to

2: The private key is confidential and the public key is public

3: Public and private keys, can be mutually encrypted and decrypted

4: Use one of the keys to encrypt the data, then only the corresponding key can be solved

There are two main ways to use

　　1: Public Key cryptography

A transfer data to B

(1), a encrypts the data with the public key, transmits to B

(2), B Decrypt with private key

　　2: Public key authentication

A transfer data to B

(1), a with the private key to encrypt the data (that is, the private key signature), transfer to B

(2), B Decrypt with public key (i.e., verification)

Example: certificate, the process of public key authentication

Signature:

    /** Signing signing Password private key certificate requires a password*/     Public functionGET_SIGNING_STR ($data){        //$data = $this->get_request_string ();        $certs=Array(); //Dump (file_get_contents (Root_path. public/static/"." Private_key. pfx "));Openssl_pkcs12_read (file_get_contents(Root_path. " public/static/"."pRivate_key . pfx "),$certs, "Password"); if(!$certs)return; $signature= ' '; Openssl_sign ($data,$signature,$certs[' Pkey '], ' sha256 '); //Dump (Base64_encode ($signature));        return Base64_encode($signature); }

Verification:

 Public functionVerify_signing ($rest){        $rest=json_decode ($rest,true); $sign=$rest[' Sign ']; $sign=Base64_decode($sign);//Signature Parameters        unset($rest[' Sign ']); unset($rest[' Sign_type ']); $verifystr=$this->GET_REQUEST_STR ($rest);//Check Clear text string        $pkeyid= Openssl_pkey_get_public (file_get_contents(Root_path. " public/static/"." Public_key.cer ")); $verify= Openssl_verify ($verifystr,$sign,$pkeyid, ' sha256 ');//verification (Clear text/signature/key)//$msg = Openssl_error_string ();       Dump ($msg); Dump ($verify);Openssl_free_key ($pkeyid); if($verify==1){            Echo' Verification Pass '; // $data =json_encode ($rest); return $data; }Else{            return' Failed verification '; }    }

RSA Encryption Process

        $privateKeyStr=file_get_contents(root_path. ") public/static/"." Pkcs1_key.pem ");         $pi _key=openssl_pkey_get_private ($privateKeyStr);               $encryptSign= "";        Openssl_private_encrypt ($sign _str,$encryptSign,$pi _key);  //(string/key to be encrypted/encrypted)

SHA Encryption Process

$sign  = Hash (' sha256 ',$source);  //(algorithm/string to be encrypted)

RSA encrypted Transfer (PHP)