rsa报错 RSA_EAY_PRIVATE_DECRYPT:data greater than mod len"

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 开发四年只会写业务代码，分布式高并发都不会还做程序员？->>>    rsa报错 内容如下 error:0406506C:rsa routines:RSA_EAY_PRIVATE_DECRYPT:data greater than mod len"  代码块  $fp = fopen("./rsa_private_key.pem", "r"); //你的私钥文件路径 $private_key = fread($fp, 8192); fclose($fp); $fp1 = fopen("./rsa_public_key.pem", "r"); //你的公钥文件路径 $public_key = fread($fp1, 8192); fclose($fp1); //echo $private_key; $this->pi_key = openssl_pkey_get_private($private_key);//这个函数可用来判断私钥是否是可用的，可用返回资源id Resource id $this->pu_key = openssl_pkey_get_public($public_key);// $result= openssl_private_decrypt($cer,$str, $this->pi_key);//私钥解密         var_dump(openssl_error_string());         var_dump($result);         die;