在python中,我从这样的公钥中提取模数(n)和(e):
#! /usr/bin/python3.5
# -*- coding: utf-8 -*-
import rsa
(pubkey, privkey) = rsa.newkeys(512)
dec_n = pubkey.n
dec_e = pubkey.e
在base64中,n和e的值是:
n:AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACIGqijUcytyQLcEVxC5gK4HDx7Y_c5aMJt9OOoWDfzcrifmZr0-8Q1i_LPE-4fuBLlaPl6EmgSN2wlbF_svHZV
e:AAAAAAAAAAAAAAAAAAAAAAAAAAAAAQAB
而且我有以下公共密钥:
-----BEGIN RSA PUBLIC KEY-----
MEgCQQCIGqijUcytyQLcEVxC5gK4HDx7Y/c5aMJt9OOoWDfzcrifmZr0+8Q1i/LP
E+4fuBLlaPl6EmgSN2wlbF/svHZVAgMBAAE=
-----END RSA PUBLIC KEY-----
我试图在PHP中生成相同的公钥。为此,我阅读了这篇文章:openssl: how can i get public key from modulus
所以我写了这段代码:
require_once("/var/www/phpseclib/Crypt/RSA.php");
$n = "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACIGqijUcytyQLcEVxC5gK4HDx7Y_c5aMJt9OOoWDfzcrifmZr0-8Q1i_LPE-4fuBLlaPl6EmgSN2wlbF_svHZV";
$e = "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAQAB";
$rsa = new Crypt_RSA();
$modulus = new Math_BigInteger(base64_decode(urldecode($n)), 256);
$exponent = new Math_BigInteger(base64_decode(urldecode($e)), 256);
$rsa->loadKey(array('n' => $modulus, 'e' => $exponent));
$rsa->setPublicKey();
$pub_key = $rsa->getPublicKey();
print_r($pub_key);
但是我得到了这个公钥:
-----BEGIN PUBLIC KEY-----
MFgwDQYJKoZIhvcNAQEBBQADRwAwRAI9AIgaqKNRzK3JAtwRXELmArgcPHthzlowm3046hYN/NyuJ+ZmvTxDWIs8Th+4EuVo+XoSaBI3bCVsWy8dlQIDAQAB
-----END PUBLIC KEY-----