加密編譯測試案例
透過集合功能整理內容
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本頁說明供應商可編寫的測試，以驗證加密編譯作業
各個供應商實作項目
Google 建議盡早執行這些測試，以便簡化快速配對整合作業。
測試案例
這類客服案件的資料包括：
- 雜湊
- 花卉濾鏡
- AES 加密與公開金鑰交換
- 訊息編碼與解密
SHA-256 雜湊
輸入值：
0x11, 0x22, 0x33, 0x44, 0x55, 0x66
雜湊結果：
0xBB, 0x00, 0x0D, 0xDD, 0x92, 0xA0, 0xA2, 0xA3, 0x46, 0xF0, 0xB5, 0x31,
0xF2, 0x78, 0xAF, 0x06, 0xE3, 0x70, 0xF8, 0x69, 0x32, 0xCC, 0xAF, 0xCC,
0xC8, 0x92, 0xD6, 0x8D, 0x35, 0x0F, 0x80, 0xF8
AES 加密
輸入值：
0xF3, 0x0F, 0x4E, 0x78, 0x6C, 0x59, 0xA7, 0xBB, 0xF3, 0x87, 0x3B, 0x5A,
0x49, 0xBA, 0x97, 0xEA
密鑰：
0xA0, 0xBA, 0xF0, 0xBB, 0x95, 0x1F, 0xF7, 0xB6, 0xCF, 0x5E, 0x3F, 0x45,
0x61, 0xC3, 0x32, 0x1D
加密輸出：
0xAC, 0x9A, 0x16, 0xF0, 0x95, 0x3A, 0x3F, 0x22, 0x3D, 0xD1, 0x0C, 0xF5,
0x36, 0xE0, 0x9E, 0x9C
ECDH 金鑰交換
Bob 的私密金鑰：
0x02, 0xB4, 0x37, 0xB0, 0xED, 0xD6, 0xBB, 0xD4, 0x29, 0x06, 0x4A, 0x4E,
0x52, 0x9F, 0xCB, 0xF1, 0xC4, 0x8D, 0x0D, 0x62, 0x49, 0x24, 0xD5, 0x92,
0x27, 0x4B, 0x7E, 0xD8, 0x11, 0x93, 0xD7, 0x63
Bob 的公開金鑰：
0xF7, 0xD4, 0x96, 0xA6, 0x2E, 0xCA, 0x41, 0x63, 0x51, 0x54, 0x0A, 0xA3,
0x43, 0xBC, 0x69, 0x0A, 0x61, 0x09, 0xF5, 0x51, 0x50, 0x06, 0x66, 0xB8,
0x3B, 0x12, 0x51, 0xFB, 0x84, 0xFA, 0x28, 0x60, 0x79, 0x5E, 0xBD, 0x63,
0xD3, 0xB8, 0x83, 0x6F, 0x44, 0xA9, 0xA3, 0xE2, 0x8B, 0xB3, 0x40, 0x17,
0xE0, 0x15, 0xF5, 0x97, 0x93, 0x05, 0xD8, 0x49, 0xFD, 0xF8, 0xDE, 0x10,
0x12, 0x3B, 0x61, 0xD2
Alice 的私密金鑰：
0xD7, 0x5E, 0x54, 0xC7, 0x7D, 0x76, 0x24, 0x89, 0xE5, 0x7C, 0xFA, 0x92,
0x37, 0x43, 0xF1, 0x67, 0x77, 0xA4, 0x28, 0x3D, 0x99, 0x80, 0x0B, 0xAC,
0x55, 0x58, 0x48, 0x38, 0x93, 0xE5, 0xB0, 0x6D
Alice 的公開金鑰：
0x36, 0xAC, 0x68, 0x2C, 0x50, 0x82, 0x15, 0x66, 0x8F, 0xBE, 0xFE, 0x24,
0x7D, 0x01, 0xD5, 0xEB, 0x96, 0xE6, 0x31, 0x8E, 0x85, 0x5B, 0x2D, 0x64,
0xB5, 0x19, 0x5D, 0x38, 0xEE, 0x7E, 0x37, 0xBE, 0x18, 0x38, 0xC0, 0xB9,
0x48, 0xC3, 0xF7, 0x55, 0x20, 0xE0, 0x7E, 0x70, 0xF0, 0x72, 0x91, 0x41,
0x9A, 0xCE, 0x2D, 0x28, 0x14, 0x3C, 0x5A, 0xDB, 0x2D, 0xBD, 0x98, 0xEE,
0x3C, 0x8E, 0x4F, 0xBF
產生的共用金鑰 (Alice 的公開金鑰 + 小柏的私人或小包的金鑰)
公開 + Alice 的私人)：
0x9D, 0xAD, 0xE4, 0xF8, 0x6A, 0xC3, 0x48, 0x8B, 0xBA, 0xC2, 0xAC, 0x34,
0xB5, 0xFE, 0x68, 0xA0, 0xEE, 0x5A, 0x67, 0x06, 0xF5, 0x43, 0xD9, 0x06,
0x1A, 0xD5, 0x78, 0x89, 0x49, 0x8A, 0xE6, 0xBA
ECDH 共用密鑰的 AES 金鑰
這是 GATT 程序中的步驟 1b (AES 金鑰產生)。
ECDH 共用金鑰：
0x9D, 0xAD, 0xE4, 0xF8, 0x6A, 0xC3, 0x48, 0x8B, 0xBA, 0xC2, 0xAC, 0x34,
0xB5, 0xFE, 0x68, 0xA0, 0xEE, 0x5A, 0x67, 0x06, 0xF5, 0x43, 0xD9, 0x06,
0x1A, 0xD5, 0x78, 0x89, 0x49, 0x8A, 0xE6, 0xBA
產生的 AES 金鑰：
0xB0, 0x7F, 0x1F, 0x17, 0xC2, 0x36, 0xCB, 0xD3, 0x35, 0x23, 0xC5, 0x15,
0xF3, 0x50, 0xAE, 0x57
花卉濾鏡
隨機鹽：
0xC7C8
加入篩選器的第一個帳戶金鑰 (結合上述隨機鹽)：
0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0x00, 0xAA, 0xBB,
0xCC, 0xDD, 0xEE, 0xFF
產生的 Bloom 濾鏡：
0x02, 0x0C, 0x80, 0x2A
電池資料 (若顯示於廣告內)：
0b00110011, // length = 3, show UI indication.
0b01000000, // left bud: not charging, battery level = 64.
0b01000000, // right bud: not charging, battery level = 64.
0b01000000 // case: not charging, battery level = 64.
含有電池資料的 Bloom 濾鏡：
0x01, 0x01, 0x46, 0x0A
已加進篩選器的第二個帳戶金鑰 (結合上述隨機鹽)：
0x11, 0x11, 0x22, 0x22, 0x33, 0x33, 0x44, 0x44, 0x55, 0x55, 0x66, 0x66,
0x77, 0x77, 0x88, 0x88
以下兩個新增的帳戶金鑰產生的 bloom 篩選器：
0x84, 0x4A, 0x62, 0x20, 0x8B
電池資料 (若顯示於廣告內)：
0b00110011, // length = 3, show UI indication.
0b01000000, // left bud: not charging, battery level = 64.
0b01000000, // right bud: not charging, battery level = 64.
0b01000000 // case: not charging, battery level = 64.
取自兩個新增電池資料的帳戶金鑰產生的表情符號篩選器：
0x46, 0x15, 0x24, 0xD0, 0x08
AES-CTR 加密
輸入資料：「有人的 Google 耳機」編碼為 utf-8 編碼
0x53, 0x6F, 0x6D, 0x65, 0x6F, 0x6E, 0x65, 0x27, 0x73, 0x20, 0x47, 0x6F,
0x6F, 0x67, 0x6C, 0x65, 0x20, 0x48, 0x65, 0x61, 0x64, 0x70, 0x68, 0x6F,
0x6E, 0x65
密鑰：
0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF, 0x01, 0x23, 0x45, 0x67,
0x89, 0xAB, 0xCD, 0xEF
Nonce：
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07
預期的加密結果：
0xEE, 0x4A, 0x24, 0x83, 0x73, 0x80, 0x52, 0xE4, 0x4E, 0x9B, 0x2A, 0x14,
0x5E, 0x5D, 0xDF, 0xAA, 0x44, 0xB9, 0xE5, 0x53, 0x6A, 0xF4, 0x38, 0xE1,
0xE5, 0xC6
HMAC-SHA256
輸入資料：
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0xEE, 0x4A, 0x24, 0x83,
0x73, 0x80, 0x52, 0xE4, 0x4E, 0x9B, 0x2A, 0x14, 0x5E, 0x5D, 0xDF, 0xAA,
0x44, 0xB9, 0xE5, 0x53, 0x6A, 0xF4, 0x38, 0xE1, 0xE5, 0xC6
密鑰：
0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF, 0x01, 0x23, 0x45, 0x67,
0x89, 0xAB, 0xCD, 0xEF
預期的 HMAC-SHA256 結果：
0x55, 0xEC, 0x5E, 0x60, 0x55, 0xAF, 0x6E, 0x92, 0x61, 0x8B, 0x7D, 0x87,
0x10, 0xD4, 0x41, 0x37, 0x09, 0xAB, 0x5D, 0xA2, 0x7C, 0xA2, 0x6A, 0x66,
0xF5, 0x2E, 0x5A, 0xD4, 0xE8, 0x20, 0x90, 0x52
將個人化名稱編碼至其他資料封包
輸入資料：「有人的 Google 耳機」編碼為 utf-8 編碼
0x53, 0x6F, 0x6D, 0x65, 0x6F, 0x6E, 0x65, 0x27, 0x73, 0x20, 0x47, 0x6F,
0x6F, 0x67, 0x6C, 0x65, 0x20, 0x48, 0x65, 0x61, 0x64, 0x70, 0x68, 0x6F,
0x6E, 0x65
密鑰：
0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF, 0x01, 0x23, 0x45, 0x67,
0x89, 0xAB, 0xCD, 0xEF
Nonce：
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07
預期的其他資料封包：
0x55, 0xEC, 0x5E, 0x60, 0x55, 0xAF, 0x6E, 0x92, 0x00, 0x01, 0x02, 0x03,
0x04, 0x05, 0x06, 0x07, 0xEE, 0x4A, 0x24, 0x83, 0x73, 0x80, 0x52, 0xE4,
0x4E, 0x9B, 0x2A, 0x14, 0x5E, 0x5D, 0xDF, 0xAA, 0x44, 0xB9, 0xE5, 0x53,
0x6A, 0xF4, 0x38, 0xE1, 0xE5, 0xC6
將其他資料封包解碼以取得個人化名稱
輸入資料：
0x55, 0xEC, 0x5E, 0x60, 0x55, 0xAF, 0x6E, 0x92, 0x00, 0x01, 0x02, 0x03,
0x04, 0x05, 0x06, 0x07, 0xEE, 0x4A, 0x24, 0x83, 0x73, 0x80, 0x52, 0xE4,
0x4E, 0x9B, 0x2A, 0x14, 0x5E, 0x5D, 0xDF, 0xAA, 0x44, 0xB9, 0xE5, 0x53,
0x6A, 0xF4, 0x38, 0xE1, 0xE5, 0xC6
密鑰：
0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF, 0x01, 0x23, 0x45, 0x67,
0x89, 0xAB, 0xCD, 0xEF
預期名稱：「有人的 Google 耳機」編碼為 utf-8 編碼
0x53, 0x6F, 0x6D, 0x65, 0x6F, 0x6E, 0x65, 0x27, 0x73, 0x20, 0x47, 0x6F,
0x6F, 0x67, 0x6C, 0x65, 0x20, 0x48, 0x65, 0x61, 0x64, 0x70, 0x68, 0x6F,
0x6E, 0x65
加密連線狀態欄位
欄位長度和類型：
0b001100101 (length = 3, type = connection status field)
連線狀態：
0b10000101:
* on head detection = 1
* connection availability = 0
* focus mode = 0
* auto-reconnected = 0
* connection state = 0x5 (A2DP with AVRCP)
自訂資料：
0x38
已連線裝置的點陣圖：
0b00001001
連線狀態欄位原始資料 (合計超過 4 個位元組)：
0x35853809
使用中的帳戶金鑰 (此為金鑰)：
0x04, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0x00, 0xAA, 0xBB,
0xCC, 0xDD, 0xEE, 0xFF
未使用的帳戶金鑰：
0x04, 0x11, 0x22, 0x22, 0x33, 0x33, 0x44, 0x44, 0x55, 0x55, 0x66, 0x66,
0x77, 0x77, 0x88, 0x88
隨機鹽：
0xC7C8
帳戶金鑰篩選器 (亦即 IV)：透過變更
使用中的帳戶金鑰從 0b00000100 到 0b00000110
0x8C, 0xA9, 0x0C, 0x08, 0x1C
加密連線狀態欄位：
0xF4, 0xBB, 0x40, 0x6F
除非另有註明，否則本頁面中的內容是採用創用 CC 姓名標示 4.0 授權，程式碼範例則為阿帕契 2.0 授權。詳情請參閱《Google Developers 網站政策》。Java 是 Oracle 和/或其關聯企業的註冊商標。
上次更新時間：2025-08-13 (世界標準時間)。
[[["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：2025-08-13 (世界標準時間)。"],[[["\u003cp\u003eThis page provides test cases for providers to validate the cryptographic aspects of their Fast Pair implementation, including hashing, Bloom filter generation, and encryption.\u003c/p\u003e\n"],["\u003cp\u003eGoogle advises incorporating these tests early in the development process for smoother Fast Pair integration.\u003c/p\u003e\n"],["\u003cp\u003eTest cases encompass SHA-256 hashing, Bloom filter construction with and without battery data, AES encryption and decryption, ECDH key exchange, and AES key derivation from ECDH shared secret.\u003c/p\u003e\n"],["\u003cp\u003eExamples and expected outputs are included for each test case, covering scenarios like personalized name encoding/decoding and connection status field encryption.\u003c/p\u003e\n"],["\u003cp\u003eSuccessful completion of these tests ensures the provider's implementation aligns with Fast Pair's security requirements.\u003c/p\u003e\n"]]],[],null,["# Cryptographic Test Cases\n\nThis page describes tests a provider can write to verify the cryptographic\ncomponents of their provider implementation.\n\nGoogle recommends implementing these tests early to ease Fast Pair integration.\n\nTest Cases\n----------\n\nThese cases cover:\n\n- Hashing\n- The Bloom Filter\n- AES Encryption and Public Key Exchange\n- Message enciphering and deciphering\n\n### SHA-256 Hashing\n\nInput value: \n\n 0x11, 0x22, 0x33, 0x44, 0x55, 0x66\n\nHashed result: \n\n 0xBB, 0x00, 0x0D, 0xDD, 0x92, 0xA0, 0xA2, 0xA3, 0x46, 0xF0, 0xB5, 0x31,\n 0xF2, 0x78, 0xAF, 0x06, 0xE3, 0x70, 0xF8, 0x69, 0x32, 0xCC, 0xAF, 0xCC,\n 0xC8, 0x92, 0xD6, 0x8D, 0x35, 0x0F, 0x80, 0xF8\n\n### AES Encryption\n\nInput value: \n\n 0xF3, 0x0F, 0x4E, 0x78, 0x6C, 0x59, 0xA7, 0xBB, 0xF3, 0x87, 0x3B, 0x5A,\n 0x49, 0xBA, 0x97, 0xEA\n\nSecret key: \n\n 0xA0, 0xBA, 0xF0, 0xBB, 0x95, 0x1F, 0xF7, 0xB6, 0xCF, 0x5E, 0x3F, 0x45,\n 0x61, 0xC3, 0x32, 0x1D\n\nEncrypted output: \n\n 0xAC, 0x9A, 0x16, 0xF0, 0x95, 0x3A, 0x3F, 0x22, 0x3D, 0xD1, 0x0C, 0xF5,\n 0x36, 0xE0, 0x9E, 0x9C\n\n### ECDH Key Exchange\n\nBob's private key: \n\n 0x02, 0xB4, 0x37, 0xB0, 0xED, 0xD6, 0xBB, 0xD4, 0x29, 0x06, 0x4A, 0x4E,\n 0x52, 0x9F, 0xCB, 0xF1, 0xC4, 0x8D, 0x0D, 0x62, 0x49, 0x24, 0xD5, 0x92,\n 0x27, 0x4B, 0x7E, 0xD8, 0x11, 0x93, 0xD7, 0x63\n\nBob's public key: \n\n 0xF7, 0xD4, 0x96, 0xA6, 0x2E, 0xCA, 0x41, 0x63, 0x51, 0x54, 0x0A, 0xA3,\n 0x43, 0xBC, 0x69, 0x0A, 0x61, 0x09, 0xF5, 0x51, 0x50, 0x06, 0x66, 0xB8,\n 0x3B, 0x12, 0x51, 0xFB, 0x84, 0xFA, 0x28, 0x60, 0x79, 0x5E, 0xBD, 0x63,\n 0xD3, 0xB8, 0x83, 0x6F, 0x44, 0xA9, 0xA3, 0xE2, 0x8B, 0xB3, 0x40, 0x17,\n 0xE0, 0x15, 0xF5, 0x97, 0x93, 0x05, 0xD8, 0x49, 0xFD, 0xF8, 0xDE, 0x10,\n 0x12, 0x3B, 0x61, 0xD2\n\nAlice's private key: \n\n 0xD7, 0x5E, 0x54, 0xC7, 0x7D, 0x76, 0x24, 0x89, 0xE5, 0x7C, 0xFA, 0x92,\n 0x37, 0x43, 0xF1, 0x67, 0x77, 0xA4, 0x28, 0x3D, 0x99, 0x80, 0x0B, 0xAC,\n 0x55, 0x58, 0x48, 0x38, 0x93, 0xE5, 0xB0, 0x6D\n\nAlice's public key: \n\n 0x36, 0xAC, 0x68, 0x2C, 0x50, 0x82, 0x15, 0x66, 0x8F, 0xBE, 0xFE, 0x24,\n 0x7D, 0x01, 0xD5, 0xEB, 0x96, 0xE6, 0x31, 0x8E, 0x85, 0x5B, 0x2D, 0x64,\n 0xB5, 0x19, 0x5D, 0x38, 0xEE, 0x7E, 0x37, 0xBE, 0x18, 0x38, 0xC0, 0xB9,\n 0x48, 0xC3, 0xF7, 0x55, 0x20, 0xE0, 0x7E, 0x70, 0xF0, 0x72, 0x91, 0x41,\n 0x9A, 0xCE, 0x2D, 0x28, 0x14, 0x3C, 0x5A, 0xDB, 0x2D, 0xBD, 0x98, 0xEE,\n 0x3C, 0x8E, 0x4F, 0xBF\n\nGenerated shared key (either Alice's public + Bob's private or Bob's\npublic + Alice's private): \n\n 0x9D, 0xAD, 0xE4, 0xF8, 0x6A, 0xC3, 0x48, 0x8B, 0xBA, 0xC2, 0xAC, 0x34,\n 0xB5, 0xFE, 0x68, 0xA0, 0xEE, 0x5A, 0x67, 0x06, 0xF5, 0x43, 0xD9, 0x06,\n 0x1A, 0xD5, 0x78, 0x89, 0x49, 0x8A, 0xE6, 0xBA\n\n### AES Key from ECDH Shared Secret\n\nThis is step 1b (AES key generation) in the GATT [procedure](/nearby/fast-pair/specifications/service/gatt#procedure \"Procedure\").\n\nECDH shared key: \n\n 0x9D, 0xAD, 0xE4, 0xF8, 0x6A, 0xC3, 0x48, 0x8B, 0xBA, 0xC2, 0xAC, 0x34,\n 0xB5, 0xFE, 0x68, 0xA0, 0xEE, 0x5A, 0x67, 0x06, 0xF5, 0x43, 0xD9, 0x06,\n 0x1A, 0xD5, 0x78, 0x89, 0x49, 0x8A, 0xE6, 0xBA\n\nGenerated AES key: \n\n 0xB0, 0x7F, 0x1F, 0x17, 0xC2, 0x36, 0xCB, 0xD3, 0x35, 0x23, 0xC5, 0x15,\n 0xF3, 0x50, 0xAE, 0x57\n\n### Bloom Filter\n\nRandom salt: \n\n 0xC7C8\n\nFirst account key added to the filter (combine with the above random salt): \n\n 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0x00, 0xAA, 0xBB,\n 0xCC, 0xDD, 0xEE, 0xFF\n\nResulting bloom filter: \n\n 0x02, 0x0C, 0x80, 0x2A\n\nBattery data (if it is contained in the advertisement): \n\n 0b00110011, // length = 3, show UI indication.\n 0b01000000, // left bud: not charging, battery level = 64.\n 0b01000000, // right bud: not charging, battery level = 64.\n 0b01000000 // case: not charging, battery level = 64.\n\nResulting bloom filter with battery data: \n\n 0x01, 0x01, 0x46, 0x0A\n\nSecond account key added to the filter (combine with the above random salt): \n\n 0x11, 0x11, 0x22, 0x22, 0x33, 0x33, 0x44, 0x44, 0x55, 0x55, 0x66, 0x66,\n 0x77, 0x77, 0x88, 0x88\n\nResulting bloom filter from both added account keys: \n\n 0x84, 0x4A, 0x62, 0x20, 0x8B\n\nBattery data (if it is contained in the advertisement): \n\n 0b00110011, // length = 3, show UI indication.\n 0b01000000, // left bud: not charging, battery level = 64.\n 0b01000000, // right bud: not charging, battery level = 64.\n 0b01000000 // case: not charging, battery level = 64.\n\nResulting bloom filter from both added account keys with battery data: \n\n 0x46, 0x15, 0x24, 0xD0, 0x08\n\n### AES-CTR Encryption\n\nInput data: \"Someone's Google Headphone\" with utf-8 encoding \n\n 0x53, 0x6F, 0x6D, 0x65, 0x6F, 0x6E, 0x65, 0x27, 0x73, 0x20, 0x47, 0x6F,\n 0x6F, 0x67, 0x6C, 0x65, 0x20, 0x48, 0x65, 0x61, 0x64, 0x70, 0x68, 0x6F,\n 0x6E, 0x65\n\nSecret key: \n\n 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF, 0x01, 0x23, 0x45, 0x67,\n 0x89, 0xAB, 0xCD, 0xEF\n\nNonce: \n\n 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07\n\nExpected encryption result: \n\n 0xEE, 0x4A, 0x24, 0x83, 0x73, 0x80, 0x52, 0xE4, 0x4E, 0x9B, 0x2A, 0x14,\n 0x5E, 0x5D, 0xDF, 0xAA, 0x44, 0xB9, 0xE5, 0x53, 0x6A, 0xF4, 0x38, 0xE1,\n 0xE5, 0xC6\n\n### HMAC-SHA256\n\nInput data: \n\n 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0xEE, 0x4A, 0x24, 0x83,\n 0x73, 0x80, 0x52, 0xE4, 0x4E, 0x9B, 0x2A, 0x14, 0x5E, 0x5D, 0xDF, 0xAA,\n 0x44, 0xB9, 0xE5, 0x53, 0x6A, 0xF4, 0x38, 0xE1, 0xE5, 0xC6\n\nSecret key: \n\n 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF, 0x01, 0x23, 0x45, 0x67,\n 0x89, 0xAB, 0xCD, 0xEF\n\nExpected HMAC-SHA256 result: \n\n 0x55, 0xEC, 0x5E, 0x60, 0x55, 0xAF, 0x6E, 0x92, 0x61, 0x8B, 0x7D, 0x87,\n 0x10, 0xD4, 0x41, 0x37, 0x09, 0xAB, 0x5D, 0xA2, 0x7C, 0xA2, 0x6A, 0x66,\n 0xF5, 0x2E, 0x5A, 0xD4, 0xE8, 0x20, 0x90, 0x52\n\n### Encode personalized name to additional data packet\n\nInput data: \"Someone's Google Headphone\" with utf-8 encoding \n\n 0x53, 0x6F, 0x6D, 0x65, 0x6F, 0x6E, 0x65, 0x27, 0x73, 0x20, 0x47, 0x6F,\n 0x6F, 0x67, 0x6C, 0x65, 0x20, 0x48, 0x65, 0x61, 0x64, 0x70, 0x68, 0x6F,\n 0x6E, 0x65\n\nSecret key: \n\n 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF, 0x01, 0x23, 0x45, 0x67,\n 0x89, 0xAB, 0xCD, 0xEF\n\nNonce: \n\n 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07\n\nExpected additional data packet: \n\n 0x55, 0xEC, 0x5E, 0x60, 0x55, 0xAF, 0x6E, 0x92, 0x00, 0x01, 0x02, 0x03,\n 0x04, 0x05, 0x06, 0x07, 0xEE, 0x4A, 0x24, 0x83, 0x73, 0x80, 0x52, 0xE4,\n 0x4E, 0x9B, 0x2A, 0x14, 0x5E, 0x5D, 0xDF, 0xAA, 0x44, 0xB9, 0xE5, 0x53,\n 0x6A, 0xF4, 0x38, 0xE1, 0xE5, 0xC6\n\n### Decode additional data packet to get personalized name\n\nInput data: \n\n 0x55, 0xEC, 0x5E, 0x60, 0x55, 0xAF, 0x6E, 0x92, 0x00, 0x01, 0x02, 0x03,\n 0x04, 0x05, 0x06, 0x07, 0xEE, 0x4A, 0x24, 0x83, 0x73, 0x80, 0x52, 0xE4,\n 0x4E, 0x9B, 0x2A, 0x14, 0x5E, 0x5D, 0xDF, 0xAA, 0x44, 0xB9, 0xE5, 0x53,\n 0x6A, 0xF4, 0x38, 0xE1, 0xE5, 0xC6\n\nSecret key: \n\n 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF, 0x01, 0x23, 0x45, 0x67,\n 0x89, 0xAB, 0xCD, 0xEF\n\nExpected name: \"Someone's Google Headphone\" with utf-8 encoding \n\n 0x53, 0x6F, 0x6D, 0x65, 0x6F, 0x6E, 0x65, 0x27, 0x73, 0x20, 0x47, 0x6F,\n 0x6F, 0x67, 0x6C, 0x65, 0x20, 0x48, 0x65, 0x61, 0x64, 0x70, 0x68, 0x6F,\n 0x6E, 0x65\n\n### Encrypted connection status field\n\nField length and type: \n\n 0b001100101 (length = 3, type = connection status field)\n\nConnection state: \n\n 0b10000101:\n\n * on head detection = 1\n * connection availability = 0\n * focus mode = 0\n * auto-reconnected = 0\n * connection state = 0x5 (A2DP with AVRCP)\n\nCustom data: \n\n 0x38\n\nConnected devices bitmap: \n\n 0b00001001\n\nConnection status field raw data (combine above 4 bytes): \n\n 0x35853809\n\nIn use account key (this is the Key): \n\n 0x04, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0x00, 0xAA, 0xBB,\n 0xCC, 0xDD, 0xEE, 0xFF\n\nNon-in use account key: \n\n 0x04, 0x11, 0x22, 0x22, 0x33, 0x33, 0x44, 0x44, 0x55, 0x55, 0x66, 0x66,\n 0x77, 0x77, 0x88, 0x88\n\nRandom salt: \n\n 0xC7C8\n\nAccount key filter (this is IV): this is generated by changing the first byte of\nin use account key from 0b00000100 to 0b00000110. \n\n 0x8C, 0xA9, 0x0C, 0x08, 0x1C\n\nEncrypted connection status field: \n\n 0xF4, 0xBB, 0x40, 0x6F\n\n| **Note:** this is encrypted by the original account key, in other words, the first byte of the key is 0x04 not 0x06"]]
