密钥长度 1024
openssl genrsa -out rsa_private_key.pem 1024 openssl rsa -in rsa_private_key.pem -pubout -out rsa_public_key.pem
function readPublicKey($keyPath) { $key = file_get_contents($keyPath); $this->rsaPublicKey = openssl_pkey_get_public($key) }
function readPrivateKey($keyPath) { $key = file_get_contents($keyPath); $this->rsaPrivateKey = openssl_pkey_get_private($key) }
// 加密后转为base64编码 function encrypt($originalData) { $crypto = ''; foreach (str_split($originalData, 117) as $chunk) { openssl_public_encrypt($chunk, $encryptData, $this->rsaPublicKey); $crypto .= $encryptData; } return base64_encode($crypto); }
// base64 post 过来后 '+' 号变成 空格 function decrypt($encryptData) { $crypto = ''; foreach (str_split(str_replace(' ', '+', base64_decode($encryptData)), 128) as $chunk) { openssl_private_decrypt($chunk, $decryptData, $this->rsaPrivateKey); $crypto .= $decryptData; } return $crypto; }