Phppki encryption technology (openssl) _ PHP Tutorial

Phppki encryption technology (openssl. Copy the code as follows :? Phppki encryption to use pki encryption requires openssl extension php. iniextensionphp_openssl.dll extension * pki mode is * public key encryption, private key decryption; The code is as follows:

// Pki encryption
// Openssl extension must be enabled for pki encryption.
// Php. ini extension = php_openssl.dll extension
/* The pki mode is
* Public key encryption and private key decryption;
* Private key encryption and public key decryption;
*/
// Private key encryption and public key decryption
// Client
// $ Data
$ Data = 'ABCD ';
// Obtain the private key $ priv_key_id
$ Priv_key_id = openssl_get_privatekey (file_get_contents ('99bill-rsa. pem', r ));
// Get the public key $ pub_key_id
$ Pub_key_id = openssl_get_publickey (file_get_contents ('99bill-rsa. cer ', r ));
// $ Data is encrypted by SHA1 hash first, and then encrypted by $ priv_key_id private key to generate a signature $ signature
// $ Signature is the encrypted signature
// Openssl_sign () encryption function. I don't know how to decrypt it ??????????????????????
Openssl_sign ($ data, $ signature, $ priv_key_id, OPENSSL_ALGO_SHA1 );
// There are two encryption functions available, and these two encryption functions have the decryption method.
// Type 1: Private key encryption and public key decryption
// $ Data indicates the data to be encrypted. $ crypted indicates the data generated by encryption, and $ decrypted indicates the data generated by decryption. $ data has the same value as $ decrypted.
// Encrypt with the $ priv_key_id private key to generate $ crypted;
Openssl_private_encrypt ($ data, $ crypted, $ priv_key_id );
Echo $ crypted;
// Use the $ pub_key_id public key to decrypt and generate $ decrypted
Openssl_public_decrypt ($ crypted, $ decrypted, $ pub_key_id );
// Type 2: Public key encryption and private key decryption
// $ Data indicates the data to be encrypted. $ crypted indicates the data generated by encryption, and $ decrypted indicates the data generated by decryption. $ data has the same value as $ decrypted.
// Generate $ crypted by encrypting the $ pub_key_id public key;
Openssl_public_encrypt ($ data, $ crypted, $ pub_key_id );
// Use the $ priv_key_id private key to decrypt and generate $ decrypted
Openssl_private_decrypt ($ crypted, $ decrypted, $ priv_key_id );
// Note: The public key obtained here does not correspond to the private key file.
// Normally, the obtained public key corresponds to the private key file one by one. here I use quick money.
// Quick money generates a file for the private key, and the corresponding public key generated file is on the quick money side
// Quick money generates a file for the public key, and the corresponding private key generated file is on the quick money side
// A public key and a private key are missing.
// I have never found a one-to-one private key and public key to generate a file. if you find one, send it to me. thank you.
// Openssl_verify () method is used to verify whether the signature is correct (the data generated by private key encryption is returned and verified by the corresponding public key.
// $ Signature: the data generated by public key encryption. $ the original data is returned. 1 is returned for success, 0 is returned for failure, and-1 is returned for error.
// $ Pub_key_id public key
Openssl_verify ($ data, $ signature, $ pub_key_id );
// Release the private key or public key from the memory
Openssl_free_key ($ priv_key_id );
Openssl_free_key ($ pub_key_id );

Generate private key and public key
Genrsa-out private-rsa.pem
Rsa-in private-rsa.pem-pubout-out pubic-rsa.cer

The http://www.bkjia.com/PHPjc/327971.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/327971.htmlTechArticle code is as follows :? Php // pki encryption // openssl extension must be enabled when pki encryption is used. // php. ini extension = php_openssl.dll extension/* The pki mode is * public key encryption and private key decryption ;...