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106 lines
3.2 KiB
PHP
106 lines
3.2 KiB
PHP
<?php
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/**
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* Example 6: Export Keys to Output or File.
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*
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* This example demonstrates how to export keys in different formats
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* and save them to files.
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*
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* @package FAIR\DID\Examples
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*/
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declare(strict_types=1);
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use FAIR\DID\Keys\EcKey;
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use FAIR\DID\Keys\EdDsaKey;
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use FAIR\DID\Keys\Key;
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require_once dirname( __DIR__ ) . '/vendor/autoload.php';
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echo "=== FAIR DID Manager: Key Export Examples ===\n\n";
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// Generate keys for demonstration.
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$rotation_key = EcKey::generate( Key::CURVE_K256 );
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$verification_key = EdDsaKey::generate();
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// 1. Export to JSON (default format) - output to console.
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echo "1. Export EC Key as JSON (public only)\n";
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echo str_repeat( '-', 50 ) . "\n";
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echo $rotation_key->export( null, false, 'json' );
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echo "\n\n";
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// 2. Export with private key included.
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echo "2. Export EC Key as JSON (with private key)\n";
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echo str_repeat( '-', 50 ) . "\n";
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echo $rotation_key->export( null, true, 'json' );
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echo "\n\n";
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// 3. Export as human-readable text.
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echo "3. Export EdDSA Key as Text\n";
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echo str_repeat( '-', 50 ) . "\n";
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echo $verification_key->export( null, true, 'text' );
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echo "\n";
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// 4. Export as environment variables.
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echo "4. Export Keys as Environment Variables\n";
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echo str_repeat( '-', 50 ) . "\n";
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echo "# EC Key (secp256k1)\n";
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echo $rotation_key->export( null, true, 'env' );
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echo "\n# EdDSA Key (ed25519)\n";
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echo $verification_key->export( null, true, 'env' );
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echo "\n";
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// 5. Save to files.
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echo "5. Saving Keys to Files\n";
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echo str_repeat( '-', 50 ) . "\n";
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$temp_dir = sys_get_temp_dir() . '/did-manager-keys-' . uniqid();
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// Save JSON format.
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$json_path = $temp_dir . '/rotation-key.json';
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if ( $rotation_key->export( $json_path, true, 'json' ) ) {
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echo "Saved JSON to: {$json_path}\n";
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echo "Contents:\n" . file_get_contents( $json_path ) . "\n";
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}
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// Save text format.
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$text_path = $temp_dir . '/verification-key.txt';
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if ( $verification_key->export( $text_path, false, 'text' ) ) {
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echo "\nSaved Text to: {$text_path}\n";
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echo "Contents:\n" . file_get_contents( $text_path );
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}
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// Save env format.
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$env_path = $temp_dir . '/keys.env';
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$env_content = '# DID Manager Keys - Generated ' . gmdate( 'c' ) . "\n\n";
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$env_content .= "# Rotation Key (secp256k1)\n";
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$env_content .= $rotation_key->export( null, true, 'env' );
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$env_content .= "\n# Verification Key (Ed25519)\n";
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$env_content .= $verification_key->export( null, true, 'env' );
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file_put_contents( $env_path, $env_content );
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echo "\nSaved ENV to: {$env_path}\n";
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echo "Contents:\n" . file_get_contents( $env_path );
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// 6. Using to_array() and to_json() directly.
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echo "\n6. Direct Method Access\n";
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echo str_repeat( '-', 50 ) . "\n";
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$key_data = $rotation_key->to_array( true );
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echo "to_array() returns:\n";
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print_r( $key_data );
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echo "\nAccess specific fields:\n";
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echo ' Type: ' . $key_data['type'] . "\n";
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echo ' Curve: ' . $key_data['curve'] . "\n";
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echo ' Public Key: ' . substr( $key_data['public_key'], 0, 30 ) . "...\n";
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echo ' DID Key: ' . substr( $key_data['did_key'], 0, 40 ) . "...\n";
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// Cleanup.
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echo "\n7. Cleanup\n";
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echo str_repeat( '-', 50 ) . "\n";
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unlink( $json_path );
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unlink( $text_path );
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unlink( $env_path );
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rmdir( $temp_dir );
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echo "Temporary files removed.\n";
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echo "\n=== Example Complete ===\n";
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