转载链接:http://liuxufei.com/weblog/jishu/376.html
1. 先用php生成一对公钥和私钥
$res = openssl_pkey_new();
openssl_pkey_export($res,$pri);
$d= openssl_pkey_get_details($res);
$pub = $d['key'];
var_dump($pri,$pub);
2. 保存好自己的私钥,把公钥可以公开给别人。如果需要对某数据进行签名,证明那数据是从你这里发出的,就需要用私钥:
$res = openssl_pkey_get_private($pri);
if (openssl_sign('hello', $out, $res))
var_dump(base64_encode($out));
上例中 $pri 为自己的私钥,’hello’ 为待签名的数据,如果签名成功,最后输出为base64编码后的签名,如:
j19H+C/NQEcyowezOQ+gmGi2UoPJNXyJ+KwpkEzJ5u4qaRD3cY4qhfFfIosypypwJT J4LjRYOIPNQMQm6ICj2nMdGfn/p/pp7il+xGz2aUWdOXkJFgIc/PGC95C9sLH04Tc6 QSuV5IMd9rjBjyv+ieokMLFm9cmtN2hGag9vq1s= |
3. 别人收到你的数据 ‘hello’ 和签名字串,想验证这是从你发来的数据的话,用你公开的公钥验证:
$sig = base64_decode($sig);
$res = openssl_pkey_get_public($pubkey);
if (openssl_verify('hello', $sig, $res) === 1)
; // 通过验证
上例中刚开始的 $sig 为之前你base64编码过的签名, $pubkey 为你的公钥
以下为网易一卡通直通车的过程分析
<?php// Rsa的公私钥$pubkey ='-----BEGIN PUBLIC KEY-----MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCurS+gyXEGyNxKcu1Ja0L6uN7/TBMNQw/DgicvftExXrus1zTPL5jSe/fOjAqssO52Pla0UlugIAgazYn/HLjEWvtgSjsqi65R+4FbC95BROKR1qhsAo2xb25EZ/Ab94khxlYBTtAfSFcT9dIXP6rmmW2wSlnIOSSxLplfj7I4jQIDAQAB-----END PUBLIC KEY-----';$prikey ='-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----';$site_id="95184";$order_id="123";$order_time="20120307120000";$user_id="61981700";$urs="someone@163.com";$reason="1";$pts="150";$sign=$site_id."".$user_id."".$order_id."".$order_time."".$urs."".$reason."".$pts;$sign=sha1($sign);$res = openssl_pkey_get_private($prikey);if (openssl_sign($sign, $out, $res))$sign=bin2hex($out);$url="http://esalesdev.163.com:8002/script/interface/dc_input?site_id=".$site_id."&order_id=".$order_id."&order_time=".$order_time."&user_id=".$user_id."&urs=".$urs."&reason=".$reason."&pts=".$pts."&sign=".$sign;print_r($url);?>