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PhabricatorFilesManagementGenerateKeyWorkflow.php
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			<?php

			final class PhabricatorFilesManagementGenerateKeyWorkflow
			extends PhabricatorFilesManagementWorkflow {

			protected function didConstruct() {
			$this
			->setName('generate-key')
			->setSynopsis(
			pht('Generate an encryption key.'))
			->setArguments(
			array(
			array(
			'name' => 'type',
			'param' => 'keytype',
			'help' => pht('Select the type of key to generate.'),
			),
			));
			}

			public function execute(PhutilArgumentParser $args) {
			$type = $args->getArg('type');
			if (!phutil_nonempty_string($type)) {
			throw new PhutilArgumentUsageException(
			pht(
			'Specify the type of key to generate with --type.'));
			}

			$format = PhabricatorFileStorageFormat::getFormat($type);
			if (!$format) {
			throw new PhutilArgumentUsageException(
			pht(
			'No key type "%s" exists.',
			$type));
			}

			if (!$format->canGenerateNewKeyMaterial()) {
			throw new PhutilArgumentUsageException(
			pht(
			'Storage format "%s" can not generate keys.',
			$format->getStorageFormatName()));
			}

			$material = $format->generateNewKeyMaterial();

			$structure = array(
			'name' => 'generated-key-'.Filesystem::readRandomCharacters(12),
			'type' => $type,
			'material.base64' => $material,
			);

			$json = id(new PhutilJSON())->encodeFormatted($structure);

			echo tsprintf(
			"%s: %s\n\n%B\n",
			pht('Key Material'),
			$format->getStorageFormatName(),
			$json);

			return 0;
			}

			}