PHP中用生成的公钥、私钥进行RSA加密解密

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$private_key = '-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----';

$public_key = '-----BEGIN PUBLIC KEY-----
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC3//sR2tXw0wrC2DySx8vNGlqt
3Y7ldU9+LBLI6e1KS5lfc5jlTGF7KBTSkCHBM3ouEHWqp1ZJ85iJe59aF5gIB2kl
Bd6h4wrbbHA2XE1sq21ykja/Gqx7/IRia3zQfxGv/qEkyGOx+XALVoOlZqDwh76o
2n1vP1D+tD3amHsK7QIDAQAB
-----END PUBLIC KEY-----';

//这个函数可用来判断私钥是否是可用的，可用返回资源id Resource id

$pi_key = openssl_pkey_get_private($private_key);

//这个函数可用来判断公钥是否是可用的

$pu_key = openssl_pkey_get_public($public_key);

$data = "aassssasssddd";//原始数据

$encrypted = "";

$decrypted = "";

echo "加密前：",$data,"\n";

echo "私钥加密:\n";

openssl_private_encrypt($data,$encrypted,$pi_key);//私钥加密

//加密后的内容通常含有特殊字符

//需要编码转换下，在网络间通过url传输时要注意base64编码是否是url安全的

$encrypted = base64_encode($encrypted);

echo $encrypted,"\n";

echo "私钥加密的内容通过公钥可用解密出来:\n";

//私钥加密的内容通过公钥可用解密出来

openssl_public_decrypt(base64_decode($encrypted),$decrypted,$pu_key);

echo $decrypted,"\n";

echo "公钥加密:\n";

//公钥加密

openssl_public_encrypt($data,$encrypted,$pu_key);

$encrypted = base64_encode($encrypted);

echo $encrypted,"\n";

echo "私钥解密:\n";

//私钥解密

openssl_private_decrypt(base64_decode($encrypted),$decrypted,$pi_key);

echo $decrypted,"\n";