[[["容易理解","easyToUnderstand","thumb-up"],["確實解決了我的問題","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["缺少我需要的資訊","missingTheInformationINeed","thumb-down"],["過於複雜/步驟過多","tooComplicatedTooManySteps","thumb-down"],["過時","outOfDate","thumb-down"],["翻譯問題","translationIssue","thumb-down"],["示例/程式碼問題","samplesCodeIssue","thumb-down"],["其他","otherDown","thumb-down"]],["上次更新時間：2024-08-22 (世界標準時間)。"],[[["The resource key hash ensures Google can verify the integrity of wrapped encryption keys without needing access to the actual keys."],["Generating the hash requires the unwrapped key, resource name, and perimeter ID used during key wrapping."],["It utilizes HMAC-SHA256, using the unwrapped key as the key and a concatenation of resource details as data for the hash calculation."],["The resource name and perimeter ID need to be UTF-8 encoded strings for the hash generation."]]],["The core mechanism is generating a resource key hash to verify wrapped encryption key integrity. This involves using HMAC-SHA256 with the unwrapped DEK as the key and a specific concatenation of metadata as data. The metadata consists of \"ResourceKeyDigest:\", the UTF-8 encoded `resource_name`, \":\", and the UTF-8 encoded `perimeter_id`. An example shows generating the hash using `openssl` with a sample `resource_name`, `perimeter_id`, and `unwrapped_dek`.\n"]]
