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opensslRSA非對稱加密、解密、簽名、驗簽

需要先了解的openssl系列函數(shù)

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  • openssl_pkey_get_private 從證書中解析獲取私鑰，以供使用。成功，返回真實的密鑰資源標(biāo)識符(Resource ID),否則返回false
  • openssl_pkey_get_public 從證書中解析獲取公鑰，以供使用。成功，返回真實的密鑰資源標(biāo)識符(Resource ID),否則返回false
  • openssl_private_encrypt($data, $encrypted, $privateKeyResourceID, OPENSSL_PKCS1_PADDING)
  • //使用私鑰key加密數(shù)據(jù)data并且將結(jié)果保存至變量crypted中
  • openssl_public_decrypt(base64_decode($encrypted), $decrypted, $publicKeyResourceID, OPENSSL_PKCS1_PADDING)
  • //私鑰加密的內(nèi)容通過公鑰可用解密出來
<?php
/**
 * Created by PhpStorm.
 * User: zrj
 * Date: 18-11-7
 * Time: 上午10:22
 */
declare(strict_types=1);//開啟強類型模式

//私匙
$privateKeyString = <<<EOF
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----
EOF;

//公匙
$publicKeyString = <<<EOF
-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxHS1H/9uMS+waaP8vkEH
x0EJWqPnRjYIzHKrXeMQ3fjZmxPGMJmzwKVdADQlaFbA/NePu7dVFyzFo2yrAFlJ
D9bWs6of79OM2QGxu/AL2GqwjaOZ/+5tSkxqU8fj+/sb35U9kGxy/k4KPwlatTaH
IkXb7qebCGX1hgNw2BkRrNfXWRX+EVs8Oy/I/d1CMQMF3mvsCFvoUAE/UJVOOAjj
Q6rBX+PorWXuTIKgWgSFWwzsRWJNhQo6P6Y/amx2Jb6Nr0rHIJIREICdYMAp2DSC
+uU+jl85NqT3U89BRRG+58feoUOLDGiv0hRQ7+k1e47MfiwKpCpJOkldEJjywMhl
1QIDAQAB
-----END PUBLIC KEY-----
EOF;

$data = "helloworld";

try {
    //從證書中解析獲取私鑰。成功，返回真實的密鑰資源標(biāo)識符
    $privateKeyResourceID = openssl_pkey_get_private($privateKeyString);
    if ($privateKeyResourceID === false) throw new \Exception('private key string is wrong');

    //從證書中解析獲取公鑰，以供使用。成功，返回真實的密鑰資源標(biāo)識符
    $publicKeyResourceID = openssl_pkey_get_public($publicKeyString);//這個函數(shù)可用來判斷公鑰是否是可用的
    if ($publicKeyResourceID === false) throw new \Exception('public key string is wrong');

    //使用私鑰key加密數(shù)據(jù)data并且將結(jié)果保存至變量crypted中。
    //加密后的數(shù)據(jù)可以通過openssl_public_decrypt()函數(shù)來解密。
    openssl_private_encrypt($data, $encrypted, $privateKeyResourceID, OPENSSL_PKCS1_PADDING);

    //私鑰加密
    $encrypted = base64_encode($encrypted);//加密之后的結(jié)果,base64只是為了避免特殊字符

    openssl_public_decrypt(base64_decode($encrypted), $decrypted, $publicKeyResourceID, OPENSSL_PKCS1_PADDING);//私鑰加密的內(nèi)容通過公鑰可用解密出來

    echo $decrypted . PHP_EOL;

} catch (\Exception $e) {
    die($e->getMessage());
}
加密、解密系列
  • 公鑰加密 openssl_public_encrypt,私鑰解密 openssl_private_decrypt
  • 私鑰加密 openssl_private_encrypt,公鑰解密 openssl_public_decrypt
封裝
<?php
/**
 * Created by PhpStorm.
 * User: zrj
 * Date: 18-11-5
 * Time: 下午8:32
 */
declare(strict_types=1);//開啟強類型模式

class RSA
{
    private $publicKeyResourceID = false;//公鑰資源
    private $privateKeyresourceID = false;//私鑰資源
    private $publicKeyContent = '';
    private $privateKeyContent = '';

    public function __construct(string $publicKeyPath, string $privatePath)
    {
        $this->checkFilePath($publicKeyPath);
        $this->checkFilePath($privatePath);
        $this->publicKeyContent = file_get_contents($publicKeyPath);
        $this->privateKeyContent = file_get_contents($privatePath);
        if (empty($this->publicKeyContent)) throw new \Exception('Public key is empty');
        if (empty($this->privateKeyContent)) throw new \Exception('Private key is empty');

        $this->publicKeyResourceID = !empty($this->publicKeyContent) ? openssl_pkey_get_public($this->getPublicKey()) : false;
        $this->privateKeyresourceID = !empty($this->privateKeyContent) ? openssl_pkey_get_private($this->getPrivatekey()) : false;

        if ($this->publicKeyResourceID === false) throw new \Exception('解析公鑰內(nèi)容失敗');
        if ($this->privateKeyresourceID === false) throw new \Exception('解析私鑰內(nèi)容失敗');
    }

    /**
     * 校驗文件路徑
     * @param string $filePath
     * @throws Exception
     */
    public function checkFilePath(string $filePath)
    {
        if (!is_file($filePath)) throw new \Exception($filePath . ' is not a regular file');
        if (!file_exists($filePath)) throw new \Exception($filePath . ' is not exists');
    }

    //獲取私有key字符串,重新格式化,為保證任何key都可以識別
    public function getPrivatekey(): string
    {
        $search = [
            "-----BEGIN RSA PRIVATE KEY-----",
            "-----END RSA PRIVATE KEY-----",
            "\n",
            "\r",
            "\r\n"
        ];

        $privateKey = str_replace($search, "", $this->privateKeyContent);
        //打斷字符串為指定數(shù)量的字串
        return $search[0] . PHP_EOL . wordwrap($privateKey, 64, "\n", true) . PHP_EOL . $search[1];
    }

    /**
     *
     * 獲取公共key字符串,重新格式化,為保證任何key都可以識別
     */
    public function getPublicKey()
    {
        $search = [
            "-----BEGIN PUBLIC KEY-----",
            "-----END PUBLIC KEY-----",
            "\n",
            "\r",
            "\r\n"
        ];
        $publicKey = str_replace($search, "", $this->publicKeyContent);
        //打斷字符串為指定數(shù)量的字串
        return $search[0] . PHP_EOL . wordwrap($publicKey, 64, "\n", true) . PHP_EOL . $search[1];
    }

    public function createKey()
    {
        $result = openssl_pkey_new();// 生成一個新的私鑰和公鑰對,
        if ($result === false) return false;
        openssl_pkey_export($result, $privateKey);//將key當(dāng)作PEM編碼字符串導(dǎo)出并且將之保存到$privateKey(通過引用傳遞的)中。
        $publicKey = openssl_pkey_get_details($result);//返回包含密鑰詳情的數(shù)組
        return array('public_key' => $publicKey["key"], 'private_key' => $this->getPrivatekey());
    }

    //使用私鑰加密
    public function encryptByPrivateKey(string $data): string
    {
        openssl_private_encrypt($data, $output, $this->privateKeyresourceID);
        return base64_encode($output);
    }

    //使用公鑰解密
    public function decryptByPublicKey(string $data): string
    {
        openssl_public_decrypt(base64_decode($data), $output, $this->publicKeyResourceID);
        return $output;
    }

    //使用公鑰加密
    public function encryptByPublicKey(string $data): string
    {
        openssl_public_encrypt($data, $output, $this->publicKeyResourceID);
        return base64_encode($output);
    }

    //使用私鑰解密
    public function decryptByPrivateKey(string $data): string
    {
        openssl_private_decrypt(base64_decode($data), $output, $this->privateKeyresourceID);
        return $output;
    }

    //生成簽名
    public function generateSignature(string $data, int $signType = OPENSSL_ALGO_SHA1): string
    {
        openssl_sign($data, $outSignature, $this->privateKeyresourceID, $signType);//Generate signature
        return base64_encode($outSignature);
    }

    //校驗簽名 OPENSSL_ALGO_SHA256為RSA2
    public function checkSignature(string $originalData, string $signature, int $signType = OPENSSL_ALGO_SHA1): bool
    {
        //如果簽名正確返回 1, 簽名錯誤返回 0, 內(nèi)部發(fā)生錯誤則返回-1
        $result = openssl_verify($originalData, base64_decode($signature), $this->publicKeyResourceID, $signType);
        return $result == 1;
    }

    public function __destruct()
    {
        openssl_free_key($this->publicKeyResourceID);
        openssl_free_key($this->privateKeyresourceID);
    }
}

$rsaObj = new RSA('/home/zrj/.ssh/rsa_public.key', '/home/zrj/.ssh/rsa_private.key');

$str = 'Hello world';
echo '原始數(shù)據(jù):' . $str . PHP_EOL;
echo '公鑰加密私鑰解密如下:' . PHP_EOL;
$tmpstr = $rsaObj->encryptByPublicKey($str); //用公鑰加密
echo '加密后的數(shù)據(jù):' . PHP_EOL;
echo $tmpstr . PHP_EOL;
$tmpstr = $rsaObj->decryptByPrivateKey($tmpstr); //用私鑰解密
echo '解密結(jié)果:' . $tmpstr . PHP_EOL;
echo PHP_EOL;
echo PHP_EOL;
echo '私鑰加密公鑰解密如下:' . PHP_EOL;
$tmpstr = $rsaObj->encryptByPrivateKey($str); //用私鑰加密
echo '私鑰加密后的數(shù)據(jù):' . PHP_EOL;
echo $tmpstr . PHP_EOL;
$tmpstr = $rsaObj->decryptByPublicKey($tmpstr); //用公鑰解密
echo '公鑰解密結(jié)果:' . $tmpstr . PHP_EOL;

echo PHP_EOL;
echo PHP_EOL;
$signature = $rsaObj->generateSignature($tmpstr);
echo '簽名結(jié)果為：' . $signature . PHP_EOL;

var_dump($rsaObj->checkSignature($tmpstr, $signature));

當(dāng)前題目：opensslRSA非對稱加密、解密、簽名、驗簽
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