Question

我收到了一个公钥和一条消息，

    $msg = "blablabla";
    $public = '-----BEGIN PUBLIC KEY-----
     (some normal public key)
    -----END PUBLIC KEY-----';

RsaEncode可以加密

我做RSA编码消息

function RsaEncode($msg,$publicKey){
  $temp = str_split($msg,117);
  $payload = array();
  foreach ($temp as $key => $value) {
    openssl_public_encrypt($value, $encrypted, $publicKey);
    array_push($payload, $encrypted);
  }
  $payload =implode($payload);
   $payload= base64_encode($payload);
  return $payload;
}

此函数返回正常，我成功编码消息，在我发送结果后，我得到了一个响应$ response，用私钥加密。

所以我用公钥解码它：

function RsaDecode($response,$publicKey){
 $payload = array();
 $payload2 = base64_decode($response);
 $temp = str_split($payload2,125);
 foreach ($temp as $key => $value) {
   openssl_public_decrypt($value, $encrypted, $publicKey);
   array_push($payload, $encrypted);
 }
 $payload =implode($payload);
 $result = utf8_encode($payload);
 return $result;
}

$ publicKey与$ publicKey相同，

声明：

openssl_public_decrypt($value, $encrypted, $publicKey);

总是返回false。

我该如何解决？

Answer 1

我改变后解决了这个问题

$temp = str_split($payload2,125);

到

$temp = str_split($payload2,128);

尺寸不能太小

openssl_public_encrypt工作，但openssl_public_decrypt失败了

1 个答案: