#关于如果生成公钥私钥的方法请看这篇文章 公钥私钥请看这里

<?php
$private_key = '-----BEGIN RSA PRIVATE KEY-----
MIICWwIBAAKBgQCEwLlhjT5UbnQ0czFnaVzQa59RAKzie+Y30jq/TGHDADPiRmqZ
yZd08O3S5sXh7BC3UaOYbIyA0xLdNCAyk53/ij3LyRa4pKrJihHJ7kNlSCUJuFei
TXdLE03InfJPTFSqaXodeAA08EOi8UuX2f0TiAZ/miM5xnhTxL2NsI8I5wIDAQAB
AoGAOEecUAcZTaImEbZkU3sPpix6NlUa9kmgqDmwPjmbmJgVZvCDcP9N/n3F1YuQ
iN8TlyQ9PvmF93eEn9Lhc4+xg2kQF9wnQp9gKQtmSZyd4Lw9NHvBy45Aj9iJSQQ/
jeMVZ+O0Yne//ErhL/X5DUOWGwcRKtw4qt7bf+u0VpcH+wECQQCIRllBIHqSEsSM
608o+mDdqmB//NloVaj0lpwG+cNnJ7iWWbv2d+qdTH0sIRsC+4WorZx0YfFJryi4
ZUYUF/sRAkEA+WI/MFO4TIFi3VAncyziRJxETNy+kzMxsyj4bLqb8KTrZs4P3oif
I71U4SrAr3c14xFekIfL6145WweLZQwUdwJAZ0+N0sXgpmT8BSlPNe27CdFknyL9
Xw+xqtuTJearsMR4N+OHj+6ROvcF3jKq27P7PEmB1ul5lzbnVAPTAOC9QQJAYPj/
MT+czsMROpXMgVDWu284b9r2kC68CLrJvx3hPXYjw1oleZcOqssYkmYZfyGP5rf+
WZ00glWlX+xTG/vSiQJAKVzxiohMqnUuNajLFXmUXgbYrCaL0prBV+qU9W7h8bd1
ymTh8N1UHKH+HzA5Hw8s/kt5vXDsTGB8SKlLuu8Wjg==
-----END RSA PRIVATE KEY-----';
 
$public_key = '-----BEGIN PUBLIC KEY-----
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCEwLlhjT5UbnQ0czFnaVzQa59R
AKzie+Y30jq/TGHDADPiRmqZyZd08O3S5sXh7BC3UaOYbIyA0xLdNCAyk53/ij3L
yRa4pKrJihHJ7kNlSCUJuFeiTXdLE03InfJPTFSqaXodeAA08EOi8UuX2f0TiAZ/
miM5xnhTxL2NsI8I5wIDAQAB
-----END PUBLIC KEY-----';
$pi_key =  openssl_pkey_get_private($private_key);
$pu_key = openssl_pkey_get_public($public_key);
$data = ["name"=>"芊诺网络","php"=>"7.1"];
$data = json_encode($data);
//公钥加密
echo "public key encrypt:\n";
openssl_public_encrypt($data,$encrypted,$pu_key);
$encrypted = base64_encode($encrypted);
echo $encrypted,"\n";
//私钥解密
echo "private key decrypt:\n";
openssl_private_decrypt(base64_decode($encrypted),$decrypted,$pi_key);
echo $decrypted,"\n";

//私钥签名
openssl_sign($data, $sign,$pi_key,OPENSSL_ALGO_SHA256);
$sign = base64_encode($sign);
echo "<br/>sign:".$sign;
//公钥验证
$res = openssl_verify($data, base64_decode($sign), $pu_key,OPENSSL_ALGO_SHA256);
echo "<br/>signverify:";
var_dump($res);

下篇文章我们介绍如何使用vue和后端进行加密交互。