php 生成加密公鑰加密私鑰例項詳解
生成公鑰私鑰 win下必須要openssl.cof支援 liunx一般已自帶安裝
$config
=
array
(
//"digest_alg" => "sha512",
"private_key_bits"
=> 512,
//位元組數 512 1024 2048 4096 等
"private_key_type"
=> OPENSSL_KEYTYPE_RSA,
//加密型別
);
//1.建立公鑰和私鑰 返回資源
$res
= openssl_pkey_new(
$config
);
//從得到的資源中獲取私鑰 並把私鑰賦給$privKey
openssl_pkey_export(
$res
,
$privKey
);
//從得到的資源中獲取私鑰 並把私鑰賦給$pubKey
$pubKey
= openssl_pkey_get_details(
$res
);
$pubKey
=
$pubKey
[
"key"
];
var_dump(
array
(
'privKey'
=>
$privKey
,
'pubKey'
=>
$pubKey
));
die
;
//2.加密解密資料 要加密的資料
$data
=
'plaintext data goes here'
;
//對$data進行加密 要加密的資料字串 得到加密後的資料 加密所需要的公鑰
openssl_public_encrypt(
$data
,
$encrypted
,
$pubKey
);
echo
base64_encode
(
$encrypted
);
//對加密後的資料進行解密 解密的資料 得到解密後的資料 解密所需要的私鑰
$decrypted
=
base64_decode
(
$encrypted
);
openssl_private_decrypt(
$encrypted
,
$decrypted
,
$privKey
);
echo
$decrypted
;
//3.一個加密解密類
class
rsa {
private
$public_key
=
''
;
//公金鑰
private
$private_key
=
''
;
//私金鑰
private
$public_key_resource
=
''
;
//公金鑰資源
private
$private_key_resource
=
''
;
//私金鑰資源
/**
* 架構函式
* @param [string] $public_key_file [公金鑰檔案地址]
* @param [string] $private_key_file [私金鑰檔案地址]
*/
public
function
__construct(
$public_key
,
$private_key
) {
$this
->public_key =
$public_key
;
$this
->private_key =
$private_key
;
if
(false == (
$this
->public_key_resource =
$this
->is_bad_public_key(
$this
->public_key)) || false == (
$this
->private_key_resource =
$this
->is_bad_private_key(
$this
->private_key))) {
throw
new
Exception(
'public key or private key no usable'
);
}
}
private
function
is_bad_public_key(
$public_key
) {
return
openssl_pkey_get_public(
$public_key
);
}
private
function
is_bad_private_key(
$private_key
) {
return
openssl_pkey_get_private(
$private_key
);
}
/**
* 生成一對公私金鑰 成功返回 公私金鑰陣列 失敗 返回 false
*/
public
function
create_key() {
$res
= openssl_pkey_new();
if
(
$res
== false)
return
false;
openssl_pkey_export(
$res
,
$private_key
);
$public_key
= openssl_pkey_get_details(
$res
);
return
array
(
'public_key'
=>
$public_key
[
"key"
],
'private_key'
=>
$private_key
);
}
/**
* 用私金鑰加密
*/
public
function
private_encrypt(
$input
) {
openssl_private_encrypt(
$input
,
$output
,
$this
->private_key_resource);
return
base64_encode
(
$output
);
}
/**
* 解密 私金鑰加密後的密文
*/
public
function
public_decrypt(
$input
) {
openssl_public_decrypt(
base64_decode
(
$input
),
$output
,
$this
->public_key_resource);
return
$output
;
}
/**
* 用公金鑰加密
*/
public
function
public_encrypt(
$input
) {
openssl_public_encrypt(
$input
,
$output
,
$this
->public_key_resource);
return
base64_encode
(
$output
);
}
/**
* 解密 公金鑰加密後的密文
*/
public
function
private_decrypt(
$input
) {
openssl_private_decrypt(
base64_decode
(
$input
),
$output
,
$this
->private_key_resource);
return
$output
;
}
}
$private_key
= '-----BEGIN RSA PRIVATE KEY-----
MIICXQIBAAKBgQC3
//sR2tXw0wrC2DySx8vNGlqt3Y7ldU9+LBLI6e1KS5lfc5jl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-----
END
RSA PRIVATE KEY-----';
$public_key
= '-----BEGIN PUBLIC KEY-----
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC3
//sR2tXw0wrC2DySx8vNGlqt
3Y7ldU9+LBLI6e1KS5lfc5jlTGF7KBTSkCHBM3ouEHWqp1ZJ85iJe59aF5gIB2kl
Bd6h4wrbbHA2XE1sq21ykja/Gqx7/IRia3zQfxGv/qEkyGOx+XALVoOlZqDwh76o
2n1vP1D+tD3amHsK7QIDAQAB
-----
END
PUBLIC KEY-----';
$rsa
=
new
rsa(
$public_key
,
$private_key
);
$str
=
'加密解密'
;
$str
=
$rsa
->public_encrypt(
$str
);
//用公金鑰加密
echo
$str
,
'</br>'
;
$str
=
$rsa
->private_decrypt(
$str
);
//用私金鑰解密
echo
$str
,
'</br>'
;
//=============================================================
$str
=
$rsa
->private_encrypt(
$str
);
//用私金鑰加密
echo
$str
,
'</br>'
;
$str
=
$rsa
->public_decrypt(
$str
);
//用公金鑰解密
echo
$str
,
'</br>'
;