PHP generates encrypted public key encrypted private key instance

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PHP generates cryptographic public key cryptographic private key instance in detail

Generate public key private key win must be OPENSSL.COF support Liunx generally comes with the installation

$config = Array (//"digest_alg" = "sha512", "private_key_bits" = 512,//bytes 512 1024 2048 4096 etc.    "Private_key_type" = Openssl_keytype_rsa,//encryption type);  1. Create a public and private key return resource $res = Openssl_pkey_new ($config);  Obtain the private key from the obtained resource and assign the private key to the $privkeyopenssl_pkey_export ($res, $privKey);  Obtain the private key from the obtained resource and assign the private key to $pubkey$pubkey = Openssl_pkey_get_details ($res); $pubKey = $pubKey ["Key"]; Var_dump (Array (' privkey ' = $privKey, ' pubkey ' = $pubKey)); Die             2. Encrypt and decrypt data to be encrypted $data = ' plaintext data goes here '; Encrypt the data string to encrypt the $data the public key Openssl_public_encrypt ($data, $encrypted, $pubKey) required for encrypted data encryption;  echo Base64_encode ($encrypted); Decryption of the encrypted data to decrypt the decrypted data to obtain the decrypted data needed to decrypt the private key $decrypted = Base64_decode ($encrypted); Openssl_private_decrypt ($encrypted, $ decrypted, $privKey);  Echo $decrypted; 3. One cryptographic decryption class, RSA {private $public _key = ";//Public key private $private _key =";//private key private $public _KEY_RESOURC e = "; Public key Resource Private $private _key_resource = "; Private Key Resource/** * Schema function * @param [string] $public _key_file [public key file Address] * @param [string] $private _key_file [private key file Address] */publi    C function construct ($public _key, $private _key) {$this->public_key = $public _key;  $this->private_key = $private _key; if (false = = ($this->public_key_resource = $this->is_bad_public_key ($this->public_key)) | | false = = ($this- >private_key_resource = $this->is_bad_private_key ($this->private_key)) {throw new Exception (' Public key or P  Rivate key no usable ');   }} Private Function Is_bad_public_key ($public _key) {return openssl_pkey_get_public ($public _key);   } Private Function Is_bad_private_key ($private _key) {return openssl_pkey_get_private ($private _key);     /** * Generate a pair of public and private keys to successfully return a public-private key array failed to return FALSE * * * Create_key () {$res = Openssl_pkey_new ();     if ($res = = false) return false;     Openssl_pkey_export ($res, $private _key);     $public _key = openssl_pkey_get_details ($res); Return Array (' PubLic_key ' + $public _key["key"], ' private_key ' = $private _key); }/** * Encrypted with private key */Public Function Private_encrypt ($input) {openssl_private_encrypt ($input, $output, $this-&gt     ;p Rivate_key_resource);   Return Base64_encode ($output); /** * Decrypt secret key after encryption */Public Function Public_decrypt ($input) {Openssl_public_decrypt (Base64_decode ($input     ), $output, $this->public_key_resource);   return $output; /** * * * * * * * Public key Encryption * * PUBLIC_ENCRYPT ($input) {openssl_public_encrypt ($input, $output, $this->p     Ublic_key_resource);   Return Base64_encode ($output); }/** * Decrypt the public key after encrypting the ciphertext * * * PRIVATE_DECRYPT ($input) {Openssl_private_decrypt (Base64_decode ($INP     UT), $output, $this->private_key_resource);   return $output; }} $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-----'; $rsa = new RSA ($public _key, $private _key); $STR = ' encrypted decryption '; $str = $rsa->public_encrypt ($STR); Use the public key to encrypt the echo $str, ' </br> '; $str = $rsa->private_decrypt ($STR); Decrypt echo $str with private key, ' </br> '; ============================================================= $str = $rsa->private_encrypt ($STR); Encrypt echo $str with private key, ' </br> '; $str = $rsa->public_decrypt ($STR); Use the public key to decrypt the echo $str, ' </br> ';

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