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74 lines
2.3 KiB
74 lines
2.3 KiB
<?php
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namespace app\utility;
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use app\utility\Base64Utility;
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class RsaUtility
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{
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/**
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* format the public key
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* @param $publicKey string public key
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* @return string
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*/
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public static function FormatterPublicKey($publicKey){
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if (false !== strpos($publicKey, '-----BEGIN PUBLIC KEY-----')) return $publicKey;
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$str = chunk_split($publicKey, 64, PHP_EOL);//Add a \n after every 64 characters
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$publicKey = "-----BEGIN PUBLIC KEY-----".PHP_EOL.$str."-----END PUBLIC KEY-----";
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return $publicKey;
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}
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/**
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* format the private key
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* @param $privateKey string private key
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* @return string
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*/
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public static function FormatterPrivateKey($privateKey){
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if (false !==strpos($privateKey, '-----BEGIN RSA PRIVATE KEY-----')) return $privateKey;
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$str = chunk_split($privateKey, 64, PHP_EOL);//Add a \n after every 64 characters
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$privateKey = "-----BEGIN RSA PRIVATE KEY-----".PHP_EOL.$str."-----END RSA PRIVATE KEY-----";
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return $privateKey;
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}
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/**
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* Private Key Encryption (Segmented Encryption)
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* @param str need to encrypt string
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*/
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public static function Encrypt($str, $privateKey) {
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$crypted = array();
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// $data = json_encode($str);
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$data = $str;
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$dataArray = str_split($data, 234);
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foreach($dataArray as $subData){
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$subCrypted = null;
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openssl_private_encrypt($subData, $subCrypted, $privateKey);
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$crypted[] = $subCrypted;
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}
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$crypted = implode('',$crypted);
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return Base64Utility::Encode($crypted);
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}
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/**
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* Public key decryption (segment decryption)
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* @encrypstr encrypted string
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*/
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public static function Decrypt($encryptstr, $publickKey) {
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// echo $encryptstr;exit;
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$encryptstr = Base64Utility::Decode($encryptstr);
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$decrypted = array();
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$dataArray = str_split($encryptstr, 256);
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foreach($dataArray as $subData){
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$subDecrypted = null;
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openssl_public_decrypt($subData, $subDecrypted, $publickKey);
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$decrypted[] = $subDecrypted;
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}
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$decrypted = implode('',$decrypted);
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// openssl_public_decrypt(base64_decode($encryptstr),$decryptstr,$this->pub_key);
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return $decrypted;
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}
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}
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