RSA encryption and decryption by PHP

Recently in the beginning to write a service-side security interface specification, need to use RSA encryption decryption. So try sledgehammer a little bit and make a record.

Environment: Win7 64-bit

PHP 5.6.12

Prototyping tools are required:

OpenSSL download Address: http://slproweb.com/products/Win32OpenSSL.html

I. Installation of OpenSSL

Where to install freely

Second, enter into the bin directory of OPENSLL for private key and public key generation

Generate private key OpenSSL genrsa-out RSA_PRIVATE_KEY.PEM 1024//Generate public key OpenSSL rsa-in rsa_private_key.pem-pubout-out Rsa_public_key. Pem

Copy the private key and public key of the production to your PHP project

Iii. opening the OpenSSL extension for PHP

Open the Extension=php_openssl.dll in the php.ini (remove;)

Iv. PHP encryption and decryption exercises

  * @time 2015-10-13 */namespace app\models;class rsacrypt {Const Private_key_file_path = ' App\certificate\rsa_priva    Te_key.pem ';    Const Public_key_file_path = ' APP\CERTIFICATE\RSA_PUBLIC_KEY.PEM ';        /** * RSA Encryption * @param string $orignData * @return String */public static function encode ($orignData) {        The path to the key file $privateKeyFilePath = self::P rivate_key_file_path;        extension_loaded (' OpenSSL ') or Die (' PHP requires OpenSSL extension support ');        (File_exists ($privateKeyFilePath)) or Die (' The file path of the key is incorrect '); Generates a resource type key, and if the contents of the key file are corrupted, the Openssl_pkey_get_private function returns false $privateKey = Openssl_pkey_get_private (file_get_        Contents ($privateKeyFilePath));        ($privateKey) or Die (' key not available ');        Encrypt subsequent data for transmission over the network $encryptData = '; Use the private key to encrypt the////////////////////////if (Openssl_private_encrypt ($orignData, $encryptData        , $privateKey)) {return $encryptData;    } else {die (' encryption failed ');    }}/** * RSA decryption * @param string $encryptData * @return String */public static function Decod        E ($encryptData) {//the path to the public key file $publicKeyFilePath = self::P ublic_key_file_path;        extension_loaded (' OpenSSL ') or Die (' PHP requires OpenSSL extension support ');        (File_exists ($publicKeyFilePath)) or Die (' The file path of the public key is incorrect '); Generates a public key of type resource, if the public key file contents are corrupted, the Openssl_pkey_get_public function returns false $publicKey = Openssl_pkey_get_public (file_get_        Contents ($publicKeyFilePath));        ($publicKey) or Die (' public key not available ');        The data after decryption $decryptData = '; Decrypts the////////////////////////if (Openssl_public_decrypt ($encryptData, $) with the public key        Decryptdata, $publicKey)) {return $decryptData;        } else {die (' decryption failed '); }    }}

Appendix:

One, a bug was encountered when using the generate private key under win:

Error:

Warning:can ' t open config file:/usr/local/ssl/openssl.cnfloading ' screen ' into random state-donegenerating RSA private Key, 1024x768 bit long modulus.........++++++.........................................++++++unable to write ' random State ' E is 65537 (0x10001)

Workaround:

Do the following in CMD

Set Openssl_conf=c:\openssl-win32\bin\openssl.cfg

Or

Set Openssl_conf=[path-to-openssl-install-dir]\bin\openssl.cfg

Ps:[path-to-openssl-install-dir] for your OpenSSL path

Second, reference materials:

http://php.net/manual/en/book.openssl.php

Http://www.jb51.net/article/64963.htm

Http://stackoverflow.com/questions/16658038/cant-open-config-file-usr-local-ssl-openssl-cnf-on-windows

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