openssl_pkey_new

Generates a new private key

 **openssl_pkey_new**  $options

generates a new private

key. How to obtain the public component of the key is shown in an example below. openssl_pkey_new

options It is possible to fine-tune the key generation (e.g. specifying the number of bits or parameters) using the parameter. These options can either be algorithm-specific parameters used for key generation, or generic options used also in generation if not specified. See for more information about how to use for a . Among those options only , , , and are used for key generation. Algorithm-specific options are used if the associative array includes one of the specific keys.

  `options``openssl_csr_new``options``private_key_bits``private_key_type``curve_name``config`- key for setting RSA parameters.          `"rsa"`

key for setting DSA parameters. "dsa"
key for DH (Diffie–Hellman key exchange) parameters. "dh"
key for Elliptic curve parameters "ec"
, , , keys for Curve25519 and Curve448 parameters. "x25519"``"x448"``"ed25519"``"ed448"

Returns an instance for the pkey on success, or false on error. OpenSSLAsymmetricKey

Voorbeeld: Obtain the public key from a private key

<?php

$private_key = openssl_pkey_new();

$public_key_pem = openssl_pkey_get_details($private_key)['key'];
echo $public_key_pem, PHP_EOL;

$public_key = openssl_pkey_get_public($public_key_pem);
var_dump($public_key);

?>

// Output prior to PHP 8.0.0; note, the function returns a resource
-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwknBFEherZe74BiRjTFA
hqwZ1SK7brwq7C/afnLXKhRR7jnrpfM0ypC46q8xz5UZswenZakJ7kd5fls+r4Bv
3P8XsKYLTh2m1GiWQhV1g77cNIN4qNWh70PiDO3fB2446o1LBgToQYuRZS5YQRfJ
rVD0ysgtVcCU9tjaey28HlgApOpYFTaaKPj2MBmEYpMC+kG2HhL12GfpHUi2eiXI
dXT2WskWHWvUrmQ7fJIfI92JlDokV62DH/q1oiedLs9OPNb0rL1aAmYdzaVN6XNH
x/o4Lh125v2vAPV9E3fZCDc/HDEUaahpjanMiCQEgEDp5Hr+CRkvERT5/ydN+p08
5wIDAQAB
-----END PUBLIC KEY-----

resource(6) of type (OpenSSL key)

// Output as of PHP 8.0.0; note, the function returns an object
-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwknBFEherZe74BiRjTFA
hqwZ1SK7brwq7C/afnLXKhRR7jnrpfM0ypC46q8xz5UZswenZakJ7kd5fls+r4Bv
3P8XsKYLTh2m1GiWQhV1g77cNIN4qNWh70PiDO3fB2446o1LBgToQYuRZS5YQRfJ
rVD0ysgtVcCU9tjaey28HlgApOpYFTaaKPj2MBmEYpMC+kG2HhL12GfpHUi2eiXI
dXT2WskWHWvUrmQ7fJIfI92JlDokV62DH/q1oiedLs9OPNb0rL1aAmYdzaVN6XNH
x/o4Lh125v2vAPV9E3fZCDc/HDEUaahpjanMiCQEgEDp5Hr+CRkvERT5/ydN+p08
5wIDAQAB
-----END PUBLIC KEY-----

object(OpenSSLAsymmetricKey)#2 (0) {
}

Voorbeeld: Generating RSA key from parameters

<?php

$nhex = "BBF82F090682CE9C2338AC2B9DA871F7368D07EED41043A440D6B6F07454F51F" .
        "B8DFBAAF035C02AB61EA48CEEB6FCD4876ED520D60E1EC4619719D8A5B8B807F" .
        "AFB8E0A3DFC737723EE6B4B7D93A2584EE6A649D060953748834B2454598394E" .
        "E0AAB12D7B61A51F527A9A41F6C1687FE2537298CA2A8F5946F8E5FD091DBDCB";

$ehex = "11";
$dhex = "A5DAFC5341FAF289C4B988DB30C1CDF83F31251E0668B42784813801579641B2" .
        "9410B3C7998D6BC465745E5C392669D6870DA2C082A939E37FDCB82EC93EDAC9" .
        "7FF3AD5950ACCFBC111C76F1A9529444E56AAF68C56C092CD38DC3BEF5D20A93" .
        "9926ED4F74A13EDDFBE1A1CECC4894AF9428C2B7B8883FE4463A4BC85B1CB3C1";

$phex = "EECFAE81B1B9B3C908810B10A1B5600199EB9F44AEF4FDA493B81A9E3D84F632" .
        "124EF0236E5D1E3B7E28FAE7AA040A2D5B252176459D1F397541BA2A58FB6599";

$qhex = "C97FB1F027F453F6341233EAAAD1D9353F6C42D08866B1D05A0F2035028B9D86" .
        "9840B41666B42E92EA0DA3B43204B5CFCE3352524D0416A5A441E700AF461503";

$dphex = "11";
$dqhex = "11";
$qinvhex = "b06c4fdabb6301198d265bdbae9423b380f271f73453885093077fcd39e2119f" .
           "c98632154f5883b167a967bf402b4e9e2e0f9656e698ea3666edfb25798039f7";

$rsa= openssl_pkey_new([
    'rsa' => [
        'n' => hex2bin($nhex),
        'e' => hex2bin($ehex),
        'd' => hex2bin($dhex),
        'p' => hex2bin($phex),
        'q' => hex2bin($qhex),
        'dmp1' => hex2bin($dphex),
        'dmq1' => hex2bin($dqhex),
        'iqmp' => hex2bin($qinvhex),
    ],
]);
$details = openssl_pkey_get_details($rsa);
var_dump($details);

?>

Vorige ← openssl_pkey_get_public Volgende openssl_private_decrypt →

openssl_pkey_new

openssl_pkey_new

Documentatie