openssl_public_decrypt()函数用于使用公钥解密数据。
openssl_public_decrypt()函数将使用公共密钥解密数据。
使用函数openssl_public_decrypt()将解密使用openssl_private_encrypt()加密的数据。
openssl_public_decrypt ( string $data , string &$decrypted , mixed $key [, int $padding = OPENSSL_PKCS1_PADDING ] ) : bool
| 序号 | 参数 | 描述 |
|---|---|---|
| 1 | data | 使用openssl_private_encrypt()加密的数据。 |
| 2 | decrypted | 它将拥有解密的数据。 |
| 3 | key | 公钥。 |
| 4 | padding | 您可以应用的填充为：OPENSSL_PKCS1_PADDING，OPENSSL_NO_PADDING。 |
PHP openssl_public_decrypt()函数成功时返回TRUE，失败时返回FALSE。
此函数将从大于5.0.0的PHP版本开始工作。
要使用openssl_private_encrypt()加密数据并使用openssl_public_decrypt()解密：
<?php
// 保存私钥
$privkey = openssl_pkey_new();
openssl_pkey_export_to_file($privkey, 'C:/xampp/htdocs/modules/openssl/privatekey.pem');
//加密数据
$data = 'Welcome To (jiaocainiao.com)';
$isvalid = openssl_private_encrypt ($data, $crypted , file_get_contents('C:/xampp/htdocs/modules/openssl/privatekey.pem'),OPENSSL_PKCS1_PADDING);
echo "Data encryption : ".$crypted;
echo ">br/<>br/<";
//保存公钥
$dn = array(
"countryName" => "IN",
"stateOrProvinceName" => "Karnataka",
"localityName" => "test1",
"organizationName" => "test2",
"organizationalUnitName" => "test3",
"commonName" => "www.test.com",
"emailAddress" => "xyz@test.com"
);
$cert = openssl_csr_new($dn, $privkey);
$cert = openssl_csr_sign($cert, null, $privkey, 365);
openssl_x509_export_to_file($cert, 'C:/xampp/htdocs/modules/openssl/publickey.pem');
if ($isvalid) {
openssl_public_decrypt ($crypted, $decrypted , file_get_contents('C:/xampp/htdocs/modules/openssl/publickey.pem'),OPENSSL_PKCS1_PADDING);
echo "Data decryption : ".$decrypted;
}
?>这将产生以下结果：
Data encryption : kG7)xy{N3Гx<J^gdΨI?{<Ws3mW$h(F;tJJW|9LvLxFf,(NnY%Oo,2QhG|-}16TmqSwb[i-rFrQhZ$ UpMCYn0,ZCuG8h@4f7w;d$I^Zat?
Data decryption : Welcome To (jiaocainiao.com)要使用openssl_private_encrypt()加密文件内容并使用openssl_public_decrypt()解密：
<?php
//保存私钥
$privkey = openssl_pkey_new();
openssl_pkey_export_to_file($privkey, 'C:/xampp/htdocs/modules/openssl/privatekey.pem');
//加密数据
$data = file_get_contents('C:/xampp/htdocs/modules/openssl/test.txt');
$isvalid = openssl_private_encrypt ($data, $crypted , file_get_contents('C:/xampp/htdocs/modules/openssl/privatekey.pem'),OPENSSL_PKCS1_PADDING);
echo "Data encryption : ".$crypted;
echo ">br/<>br/<";
//保存公钥
$dn = array(
"countryName" => "IN",
"stateOrProvinceName" => "Karnataka",
"localityName" => "test1",
"organizationName" => "test2",
"organizationalUnitName" => "test3",
"commonName" => "www.test.com",
"emailAddress" => "xyz@test.com"
);
$cert = openssl_csr_new($dn, $privkey);
$cert = openssl_csr_sign($cert, null, $privkey, 365);
openssl_x509_export_to_file($cert, 'C:/xampp/htdocs/modules/openssl/publickey.pem');
if ($isvalid) {
openssl_public_decrypt ($crypted, $decrypted , file_get_contents('C:/xampp/htdocs/modules/openssl/publickey.pem'),OPENSSL_PKCS1_PADDING);
echo "Data decryption : ".$decrypted;
}
?>这将产生以下结果：
Data encryption : V*+@4CXimM6 ,?F,+q @gN6c<*eh:5Z&&'+= bJr aO@gmGy4W2%pX@kDWfEW$j>i~1wm}}5Ix H*A8 U7~°F}4DVMZC 'C-7f Data decryption : This is data encryption test using openssl php module.