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(PHP ActiveX) How to Generate a JSON Web Key (JWK)Demonstrates how to generate the following types of JSON Web Keys:
Note: This example requires Chilkat v9.5.0.66 or later.
<?php // This requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // ---------------------------------------------- // Generate an RSA key pair in JWK format. // (Examples for generating other key types are shown below...) // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Rsa') $rsa = new COM("Chilkat.Rsa"); $success = $rsa->GenerateKey(2048); // rsaKey is a Chilkat.PrivateKey $rsaKey = $rsa->ExportPrivateKeyObj(); $rsaJwkStr = $rsaKey->getJwk(); // The string returned is the most compact possible, and therefore it is not // very readable. To pretty-print, load into a JSON object and emit.. // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.JsonObject') $json = new COM("Chilkat.JsonObject"); $json->EmitCompact = 0; $json->Load($rsaJwkStr); print $json->emit() . "\n"; // Sample RSA JWK: // { // "kty": "RSA", // "n": "6w1Xpof7gKmytJ3yc_yjI5_K3MvVXnBYBDy5Oh2W6Xqu_fOl3W18SjS2AU5xJrTHlB_j84yQjPyXJh_ixjACK4K4dCSYqlLmn3R7QJ84vnHLIEkqwUICqOHdCBjK5xhMrdZxIhuNlJzbARY-3u9RqjsT3HYTjA6JNHUWTYBBRou4gYGm4cJgvX4uexdikqxnze014RmZMaOV_4MR--WL4G8QfNJ2pRBEXQeKyije89H6M5oTSK7KZqFTIqu9hwNtx2oGpGAIcS0Jv5xVl-hDtwXZNwQJaOxMzLw1nwnb2kMliJa67EabQFrQY_xthQNsfzcHJJlpqYiMprW8wRkzmQ", // "e": "AQAB", // "d": "1_bnXMw-SeYhmxAwb19lqVqtMpdaES5ZwHLmoT4EpbsiQ5T1BfENrMSnoaWoEy8w3Kk8cU7qlY-TdOUBIKWFqOKvhY8GciA_Y6zLfgGNSnYVczGmxfBXr0HvKvxUmWZbNbH9OqBkQnKoSmRdGcp7l1Q2mG4o4ZuNdxRJjKXV0_DTrNLUJzst0hsfoZ6mWUrQcn39XGvvLjz9ySS-DYGI1vli3ayx8jVNuw0rU8UXVs9WmPQLvZO_ZDMhoLEeKsdejnNkUNPAUjqxcSOZRojt4BfCmbt-_1slFb0NsoaqnDVZGezd9J9ocxGuyIWHAJu9GGZEcdaFyiDDs_WA1IS_fQ", // "p": "9dU8f6yOklRcpV6ayVMKpyQ6AMuBTF3rZmB498eAvvTkVG1-upm8IkikTVNpPjEalc82Sxuq8oF4N5x1-F33sgVEoCZG-1WFZTn-rnPnXSALES9hqSaVYEwnh61EiY8ckjBVr9jD2nL1JKdbfgVVeo69-9PdjnKYYDVL8eLNPwM", // "q": "9MX2sW0GyaOsZ86AYe3eG2ZgcgKHvhJa573gih5Jvi2e-Nv-L0EVK29_DA7n0Pjm-gl9zVAsGsMMkphJyEF9QgyUlJ-59XLqWnECS5gO6WZdtHrJxVvcO-_AOrLIxeYnYcwhmaVaxs_UEpqGzupKHCWgf4cfXe49lrIsqGKH4jM", // "dp": "IQgj9uvSxGq9gCL0HXUhC1Bc0tqFZyN_i-QOnQybig0R2R5VVvFtTBYCrbk1fPvQHK0ZGIKBN9CZvK8zUsodjDgU_ofmJcNaBz4BsKM2RVcW5Zo-PyJGFAhnj12CxhEKv8Hq4ZP4zROBSQmLy6Uf1TX05S-Up51SSCshJ0FYXs0", // "dq": "RijsMiUfGfL5OvP85pUI4e-xW1yQThHyzpQlZVGTL5jiBVEBhcfw6ndWAj3Pgp2ljyvjTFNboPwhgW93Tpg-8AytFgDGi605sVzNHJ_kPlBiMZY0eYaAFQn-npSaaecziJu7UdAMugneLsruMycCwRij7Ynsmr7sFmLR3B4J9vM", // "qi": "jZE-a1pa8YjflpCSH5oqp1f6f6I6-hpZcLdamLCoAcjVSIPk86gtXtOFES4411-DqYzYIZM6B_g_SRYY6JpKAOuZ40mmMTlnIEoVf8BHiGl3g6bBAiN1yQGXrwXJsg2OYnocyRA-xWNdcMSSFA52SwEdar2Mmw29qVzxtC1QbpA" // } // ---------------------------------------------- // Generate an EC P-256 key pair in JWK format // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Prng') $prng = new COM("Chilkat.Prng"); // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Ecc') $ecc = new COM("Chilkat.Ecc"); // ecKey is a Chilkat.PrivateKey $ecKey = $ecc->GenEccKey('P-256',$prng); if ($ecc->LastMethodSuccess != 1) { print $ecc->LastErrorText . "\n"; exit; } $ecJwkStr = $ecKey->getJwk(); $json->Load($ecJwkStr); print $json->emit() . "\n"; // Sample EC JWK Key: // { // "kty": "EC", // "crv": "P-256", // "x": "tDeeYABgKEAbWicYPCEEI8sP4SRIhHKcHDW7VqrB4LA", // "y": "J08HOoIZ0rX2Me3bNFZUltfxIk1Hrc8FsLu8VaSxsMI", // "d": "-bqt1T0wNAN8sP5ruycQZRVlMlt3V_dSwlJ60xAX5io" // } // ---------------------------------------------- // Octet sequence keys are intended for representing secret keys, such as HMAC keys and AES keys. // We'll use crypt to generate a random UUID.. // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Crypt2') $crypt = new COM("Chilkat.Crypt2"); // AES and HMAC keys are simply random arrays of bytes // For these, we can just build the JSON directly, // with the help of the PRNG object. // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.JsonObject') $jwkHmac = new COM("Chilkat.JsonObject"); $jwkHmac->EmitCompact = 0; // Generate a 256-bit HMAK key (32 bytes) $jwkHmac->AppendString('kty','oct'); // Give the key an optional ID, which can be anything, even strings as simple as "1", "2", etc. $jwkHmac->AppendString('kid',$crypt->generateUuid()); // Indicate the intended key alg (optional) $jwkHmac->AppendString('alg','HS256'); // Generate the actual key bytes $jwkHmac->AppendString('k',$prng->genRandom(32,'base64url')); print $jwkHmac->emit() . "\n"; // Sample HMAC-256 JWK: // { // "kty": "oct", // "kid": "06c2515d-41fb-e436-e405-3abb361f5f7a", // "alg": "HS256", // "k": "wR32w7yiMe5Lhb1vkW2koBpoMxpXTFYuxOYCCIEKjdE" // } // ---------------------------------------------- // Now generate a 192-bit (24 byte) key that could be used with AES192GCM // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.JsonObject') $jwkAes = new COM("Chilkat.JsonObject"); $jwkAes->EmitCompact = 0; $jwkAes->AppendString('kty','oct'); $jwkAes->AppendString('kid','2'); $jwkAes->AppendString('k',$prng->genRandom(24,'base64url')); print $jwkAes->emit() . "\n"; // Sample AES key: // { // "kty": "oct", // "kid": "2", // "k": "akAkq-L_ZTZ6-tEIhDUMtU2ENhsEgL-p" // } ?> |
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