php中rsa非对称加密例子

<?php // $private_key = '-----BEGIN RSA PRIVATE KEY----- // MIICXQIBAAKBgQC3//sR2tXw0wrC2DySx8vNGlqt3Y7ldU9+LBLI6e1KS5lfc5jl // TGF7KBTSkCHBM3ouEHWqp1ZJ85iJe59aF5gIB2klBd6h4wrbbHA2XE1sq21ykja/ // Gqx7/IRia3zQfxGv/qEkyGOx+XALVoOlZqDwh76o2n1vP1D+tD3amHsK7QIDAQAB // AoGBAKH14bMitESqD4PYwODWmy7rrrvyFPEnJJTECLjvKB7IkrVxVDkp1XiJnGKH // 2h5syHQ5qslPSGYJ1M/XkDnGINwaLVHVD3BoKKgKg1bZn7ao5pXT+herqxaVwWs6 // ga63yVSIC8jcODxiuvxJnUMQRLaqoF6aUb/2VWc2T5MDmxLhAkEA3pwGpvXgLiWL // 3h7QLYZLrLrbFRuRN4CYl4UYaAKokkAvZly04Glle8ycgOc2DzL4eiL4l/+x/gaq // deJU/cHLRQJBANOZY0mEoVkwhU4bScSdnfM6usQowYBEwHYYh/OTv1a3SqcCE1f+ // qbAclCqeNiHajCcDmgYJ53LfIgyv0wCS54kCQAXaPkaHclRkQlAdqUV5IWYyJ25f // oiq+Y8SgCCs73qixrU1YpJy9yKA/meG9smsl4Oh9IOIGI+zUygh9YdSmEq0CQQC2 // 4G3IP2G3lNDRdZIm5NZ7PfnmyRabxk/UgVUWdk47IwTZHFkdhxKfC8QepUhBsAHL // QjifGXY4eJKUBm3FpDGJAkAFwUxYssiJjvrHwnHFbg0rFkvvY63OSmnRxiL4X6EY // yI9lblCsyfpl25l7l5zmJrAHn45zAiOoBrWqpM5edu7c // -----END RSA PRIVATE KEY-----'; // $public_key = '-----BEGIN PUBLIC KEY----- // MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC3//sR2tXw0wrC2DySx8vNGlqt // 3Y7ldU9+LBLI6e1KS5lfc5jlTGF7KBTSkCHBM3ouEHWqp1ZJ85iJe59aF5gIB2kl // Bd6h4wrbbHA2XE1sq21ykja/Gqx7/IRia3zQfxGv/qEkyGOx+XALVoOlZqDwh76o // 2n1vP1D+tD3amHsK7QIDAQAB // -----END PUBLIC KEY-----'; $privateKeyFilePath = './key/rsa_private_key.pem';//就是上面的那个 /** * 公钥文件的路径 */ $publicKeyFilePath = './key/rsa_public_key.pem'; extension_loaded('openssl') or die('php需要openssl扩展支持'); (file_exists($privateKeyFilePath) && file_exists($publicKeyFilePath)) or die('密钥或者公钥的文件路径不正确'); /** * 生成Resource类型的密钥，如果密钥文件内容被破坏，openssl_pkey_get_private函数返回false */ $private_key = openssl_pkey_get_private(file_get_contents($privateKeyFilePath)); /** * 生成Resource类型的公钥，如果公钥文件内容被破坏，openssl_pkey_get_public函数返回false */ $public_key = openssl_pkey_get_public(file_get_contents($publicKeyFilePath)); //echo $private_key; $pi_key = openssl_pkey_get_private($private_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 $pu_key = openssl_pkey_get_public($public_key);//这个函数可用来判断公钥是否是可用的 print_r($pi_key);echo " "; print_r($pu_key);echo " "; $data = "this is a rsa test...";//原始数据 $encrypted = ""; $decrypted = ""; echo "source data:",$data," "; echo "private key encrypt: "; openssl_private_encrypt($data,$encrypted,$pi_key);//私钥加密 $encrypted = base64_encode($encrypted);//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 echo $encrypted," "; echo "public key decrypt: "; openssl_public_decrypt(base64_decode($encrypted),$decrypted,$pu_key);//私钥加密的内容通过公钥可用解密出来 echo $decrypted," "; echo "--------------------------------------- "; echo "public key encrypt: "; openssl_public_encrypt($data,$encrypted,$pu_key);//公钥加密 $encrypted = base64_encode($encrypted); echo $encrypted," "; echo "private key decrypt: "; openssl_private_decrypt(base64_decode($encrypted),$decrypted,$pi_key);//私钥解密 echo $decrypted," ";

php中rsa非对称加密例子

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