生成私钥文件 1024和2048位 注意：私钥owner
openssl genrsa -out rsa_private_key.pem 1024
提取公钥
openssl rsa -in rsa_private_key.pem -pubout -out rsa_public_key.pem
namespace app\common\openssl;
class Openssl
{
//值得注意的是，如果选择密钥是1024bit长的（openssl genrsa -out rsa_private_key.pem 1024），那么支持加密的明文长度字节最多只能是1024/8=128byte
//如果加密的padding填充方式选择的是OPENSSL_PKCS1_PADDING（这个要占用11个字节），那么明文长度最多只能就是128-11=117字节。
//如果超出，那么这些openssl加解密函数会返回false
CONST DELEN = ‘256’; //取决于rsa密钥的长度，1024位密钥应设置为128 117
CONST ENLEN = ‘245’;
CONST KEY = ‘yan’; //用于签名加盐，通常在sdk中使用accessKey代替
CONST PUB = ‘—–BEGIN PUBLIC KEY—–
—–END PUBLIC KEY—–‘;
CONST PRI = ‘—–BEGIN RSA PRIVATE KEY—–
—–END RSA PRIVATE KEY—–‘;
private $config = [
‘private_key_bits’ => 2048,
];
public function makeKey(){
$resource = openssl_pkey_new($this->config);
openssl_pkey_export($resource, $privateKey);
echo $privateKey;
echo openssl_pkey_get_details($resource)[‘key’];
}
//公钥加密
public static function PublicEncrypt($data){
$str = ”;
foreach (str_split($data, self::ENLEN) as $chunk) {
openssl_public_encrypt($chunk, $encryptData, self::PUB);
$str .= $encryptData;
}
return base64_encode($str);
}
//公钥解密
public static function PublicDecrypt($data){
$data = base64_decode($data);
$str = ”;
foreach (str_split($data, self::DELEN) as $chunk) {
openssl_public_decrypt($chunk, $encryptData, self::PUB);
$str .= $encryptData;
}
return $str;
}
//私钥加密
public static function PrivateEncrypt($data)
{
$str = ”;
foreach (str_split($data, self::ENLEN) as $chunk) {
openssl_private_encrypt($chunk, $decryptData, self::PRI);
$str .= $decryptData;
}
return base64_encode($str);
}
//私钥解密
public static function PrivateDecrypt($data)
{
$data = base64_decode($data);
$str = ”;
foreach (str_split($data, self::DELEN) as $chunk) {
openssl_private_decrypt($chunk, $decryptData, self::PRI);
$str .= $decryptData;
}
return $str;
}
//私钥加签
public static function PrivateSign($data){
openssl_sign($data, $sign, self::PRI, OPENSSL_ALGO_SHA1);
return base64_encode($sign);
}
/**
* 私钥验签
* @param $str 被加密的原始数据
* @param $sign 签名
* @return mixed 结果
*/
public static function PrivateVerify($str, $sign){
openssl_verify($str, $sign, self::PRI, OPENSSL_ALGO_SHA1);
return $sign;
}
//公钥验签
public static function PublicVerify($str, $sign){
$sign = base64_decode($sign);
$res = openssl_verify($str, $sign, self::PUB, OPENSSL_ALGO_SHA1);
return $res;
}
}
