


Detailed explanation of php pki encryption technology (openssl) examples
This article is a detailed analysis and introduction to the pki encryption technology (openssl) in php. Friends in need can refer to it
The code is as follows:
<?php //pki加密 //使用pki加密需要开启 openssl扩展 //php.ini extension = php_openssl.dll扩展 /*pki模式是 * 公钥加密,私钥解密; * 私钥加密,公钥解密; */ //私钥加密,公钥解密 //客户端 //$data数据 $data = 'abcd'; //获取私钥 $priv_key_id $priv_key_id = openssl_get_privatekey(file_get_contents('99bill-rsa.pem', r)); //获取公钥 $pub_key_id $pub_key_id = openssl_get_publickey(file_get_contents('99bill-rsa.cer', r)); //$data首选通过SHA1哈希加密,然后通过$priv_key_id私钥加密,生成签名$signature //$signature就是加密过的签名 //openssl_sign()加密函数,至于它的解密方法我不知道?????????????????????? openssl_sign($data, $signature, $priv_key_id, OPENSSL_ALGO_SHA1); //还有两种加密函数,而且这两种加密函数有解密方法,知道 //第一种:私钥加密,公钥解密 //$data要加密的数据,$crypted是加密生成的数据,$decrypted是解密生成的数据; $data与$decrypted值相同 //通过$priv_key_id私钥加密,生成$crypted; openssl_private_encrypt($data, $crypted, $priv_key_id); echo $crypted; //通过$pub_key_id公钥解密,生成$decrypted openssl_public_decrypt($crypted, $decrypted , $pub_key_id); //第二种:公钥加密,私钥解密 //$data要加密的数据,$crypted是加密生成的数据,$decrypted是解密生成的数据; $data与$decrypted值相同 //通过$pub_key_id公钥加密,生成$crypted; openssl_public_encrypt($data, $crypted, $pub_key_id); //通过$priv_key_id私钥解密,生成$decrypted openssl_private_decrypt($crypted, $decrypted, $priv_key_id); //注意事项,我这边的获取公钥与私钥的文件是不对应的 //正常情况,获取公钥与私钥文件是一一对应的,这里我使用快钱的。 //快钱给了私钥生成文件,对应的公钥生成文件在快钱那边 //快钱给了公钥生成文件,对应的私钥生成文件在快钱那边 //也就是缺少了一个公钥生成文件和一个私钥生成文件 //我始终没找到一个一一对应的私钥、公钥生成文件,如果你找的了发我一份,谢谢。 // openssl_verify()方法验证签名是否正确(私钥加密生成的数据返回来,用对应的公钥验证),只有这一种情况。 // $signature公钥加密生成的数据,$data原始数据,成功返回1,失败返回0,错误返回-1 // $pub_key_id公钥 openssl_verify($data, $signature, $pub_key_id); //从内存中释放私钥或公钥 openssl_free_key($priv_key_id); openssl_free_key($pub_key_id);
Generate private and public keys
genrsa -out private-rsa.pem
rsa -in private-rsa.pem -pubout -out public-rsa.cer
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