Kriptografik Test Durumları
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Test Durumları
Bu durumlar şunları kapsar:
- Karma oluşturma
- Çiçek Filtresi
- AES Şifreleme ve Ortak Anahtar Değişimi
- Mesaj şifreleme ve çözme
SHA-256 Karma Oluşturma
Giriş değeri:
0x11, 0x22, 0x33, 0x44, 0x55, 0x66
Karma oluşturma işlemi uygulanmış sonuç:
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 Şifreleme
Giriş değeri:
0xF3, 0x0F, 0x4E, 0x78, 0x6C, 0x59, 0xA7, 0xBB, 0xF3, 0x87, 0x3B, 0x5A,
0x49, 0xBA, 0x97, 0xEA
Gizli anahtar:
0xA0, 0xBA, 0xF0, 0xBB, 0x95, 0x1F, 0xF7, 0xB6, 0xCF, 0x5E, 0x3F, 0x45,
0x61, 0xC3, 0x32, 0x1D
Şifrelenmiş çıkış:
0xAC, 0x9A, 0x16, 0xF0, 0x95, 0x3A, 0x3F, 0x22, 0x3D, 0xD1, 0x0C, 0xF5,
0x36, 0xE0, 0x9E, 0x9C
ECDH Anahtar Değişimi
İbrahim'in özel anahtarı:
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
İbrahim'in ortak anahtarı:
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
Aylin'in özel anahtarı:
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
Aylin'in ortak anahtarı:
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
Oluşturulan paylaşılan anahtar (Azra'nın genel + Ali'nin özel veya Ali'nin gizli anahtarı)
herkese açık + Ayşe'nin özel hesabı):
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 Paylaşılan Gizli Anahtar'dan AES Anahtarı
Bu, GATT prosedürünün 1b adımıdır (AES anahtar oluşturma).
ECDH paylaşılan anahtarı:
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
Oluşturulan AES anahtarı:
0xB0, 0x7F, 0x1F, 0x17, 0xC2, 0x36, 0xCB, 0xD3, 0x35, 0x23, 0xC5, 0x15,
0xF3, 0x50, 0xAE, 0x57
Çiçek Filtresi
Rastgele takviye:
0xC7C8
Filtreye eklenen ilk hesap anahtarı (yukarıdaki rastgele takviyeyle birleştirin):
0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0x00, 0xAA, 0xBB,
0xCC, 0xDD, 0xEE, 0xFF
Elde edilen çiçek filtresi:
0x02, 0x0C, 0x80, 0x2A
Pil verileri (reklamda yer alıyorsa):
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.
Pil verili sonuçta ortaya çıkan çiçek filtresi:
0x01, 0x01, 0x46, 0x0A
Filtreye eklenen ikinci hesap anahtarı (yukarıdaki rastgele takviyeyle birleştirin):
0x11, 0x11, 0x22, 0x22, 0x33, 0x33, 0x44, 0x44, 0x55, 0x55, 0x66, 0x66,
0x77, 0x77, 0x88, 0x88
Eklenen her iki hesap anahtarında oluşan çiçek filtresi:
0x84, 0x4A, 0x62, 0x20, 0x8B
Pil verileri (reklamda yer alıyorsa):
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.
Pil verisini içeren her iki hesap anahtarında oluşan çiçek filtresi:
0x46, 0x15, 0x24, 0xD0, 0x08
AES-CTR Şifreleme
Giriş verileri: "Biri Google Kulaklığı" utf-8 kodlamalı
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
Gizli anahtar:
0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF, 0x01, 0x23, 0x45, 0x67,
0x89, 0xAB, 0xCD, 0xEF
Tek seferlik:
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07
Beklenen şifreleme sonucu:
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
Giriş verileri:
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
Gizli anahtar:
0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF, 0x01, 0x23, 0x45, 0x67,
0x89, 0xAB, 0xCD, 0xEF
Beklenen HMAC-SHA256 sonucu:
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
Kişiselleştirilmiş adı ek veri paketine kodlayın
Giriş verileri: "Biri Google Kulaklığı" utf-8 kodlamalı
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
Gizli anahtar:
0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF, 0x01, 0x23, 0x45, 0x67,
0x89, 0xAB, 0xCD, 0xEF
Tek seferlik:
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07
Beklenen ek veri paketi:
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
Kişiselleştirilmiş adı almak için ek veri paketinin kodunu çözün
Giriş verileri:
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
Gizli anahtar:
0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF, 0x01, 0x23, 0x45, 0x67,
0x89, 0xAB, 0xCD, 0xEF
Beklenen ad: "Biri Google Kulaklığı" utf-8 kodlamalı
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
Şifrelenmiş bağlantı durumu alanı
Alan uzunluğu ve türü:
0b001100101 (length = 3, type = connection status field)
Bağlantı durumu:
0b10000101:
* on head detection = 1
* connection availability = 0
* focus mode = 0
* auto-reconnected = 0
* connection state = 0x5 (A2DP with AVRCP)
Özel veriler:
0x38
Bağlı cihazlar bit eşlemi:
0b00001001
Bağlantı durumu alanındaki ham veriler (4 bayttan büyük olacak şekilde birleştirin):
0x35853809
Kullanılan hesap anahtarı (Bu, Anahtar'dır):
0x04, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0x00, 0xAA, 0xBB,
0xCC, 0xDD, 0xEE, 0xFF
Kullanımda olmayan hesap anahtarı:
0x04, 0x11, 0x22, 0x22, 0x33, 0x33, 0x44, 0x44, 0x55, 0x55, 0x66, 0x66,
0x77, 0x77, 0x88, 0x88
Rastgele takviye:
0xC7C8
Hesap anahtar filtresi (IV'dür): Bu, filtrenin ilk baytı değiştirilerek oluşturulur.
0b00000100 ile 0b00000110 arasında kullanılan hesap anahtarı.
0x8C, 0xA9, 0x0C, 0x08, 0x1C
Şifrelenmiş bağlantı durumu alanı:
0xF4, 0xBB, 0x40, 0x6F
Aksi belirtilmediği sürece bu sayfanın içeriği Creative Commons Atıf 4.0 Lisansı altında ve kod örnekleri Apache 2.0 Lisansı altında lisanslanmıştır. Ayrıntılı bilgi için Google Developers Site Politikaları'na göz atın. Java, Oracle ve/veya satış ortaklarının tescilli ticari markasıdır.
Son güncelleme tarihi: 2025-08-13 UTC.
[null,null,["Son güncelleme tarihi: 2025-08-13 UTC."],[[["\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"]]
