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StreetPass (edit)

Revision as of 21:23, 23 December 2016

2,103 bytes added ,  21:23, 23 December 2016
m
→‎CCMP Key
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== CCMP Key ==
 
== CCMP Key ==
−
The StreetPass local-WLAN CCMP data-encryption key is generated by the StreetPass CECD module, where the CCMP key is the 16-byte output from encrypting an all-zero block with AES-CTR via [[PS:EncryptDecryptAes]], with keytype6. The CTR is the first 0x10-bytes from a SHA1-HMAC hash. The SHA1-HMAC key is a 17-byte text string including the NULL-terminator, a seperate HMAC key is used for retail/dev-units, this is determined via [[Configuration_Memory|UNITINFO]] bit0. The data hashed with SHA1-HMAC is a 0x1C-byte buffer, which is described below.
+
The StreetPass local-WLAN CCMP data-encryption key is generated by the StreetPass CECD module, where the CCMP key is the 16-byte output from encrypting an all-zero block with AES-CTR via [[PS:EncryptDecryptAes]], with keytype6. The CTR is the first 0x10-bytes from a SHA1-HMAC hash. The SHA1-HMAC key is a 17-byte text string including the NULL-terminator, a seperate HMAC key is used for retail/dev-units, this is determined via [[Configuration_Memory#ENVINFO|ENVINFO]] bit0. The data hashed with SHA1-HMAC is a 0x1C-byte buffer, which is described below.
    
=== Hash Block ===
 
=== Hash Block ===
Line 94: Line 94:  
|  '''StreetPass consoleID'''
 
|  '''StreetPass consoleID'''
 
|  Seen to change when the Settings app is used if there has not been a StreetPass tag recently. Also may change after each StreetPass hit and system power-off?
 
|  Seen to change when the Settings app is used if there has not been a StreetPass tag recently. Also may change after each StreetPass hit and system power-off?
−
|  0f c9 c6 80 5b 6f bc 5a
+
|  c8 34 6e 05 0f c9 c6 80
 
|}
 
|}
−
  −
Of note, there is a 4 byte sequence unaccounted for prior to the StreetPass consoleID and after the currently unknown field.
      
===== Protocol Version =====
 
===== Protocol Version =====
Line 116: Line 114:  
   Street Fighter: 00 03 05 00 02 (FF FF FF FF FF FF)
 
   Street Fighter: 00 03 05 00 02 (FF FF FF FF FF FF)
   −
Some services have a 6-byte field preceding or succeeding the StreetPass service that is just FF bytes (e.g. FF FF FF FF FF FF). The purpose of these is unknown, although may be used as data for a service, or as separator of some sort for different types of StreetPass services.
+
The first 4 bytes are the titleID of the service, the last byte seems to contain flags.
 +
 
 +
The last byte (flags) have been observed between those possibilities :
 +
 
 +
  00000000
 +
  00000010
 +
  00010000
 +
  00100000
 +
  00110000
 +
  00110010
 +
 
 +
Only the bits 2,5,6 were used.
 +
When set, the bit n°2 indicates the presence of a followinf 6-byte field filled with 0xff.
 +
 
 +
Some services have a 6-byte field succeeding the StreetPass service that is just FF bytes (e.g. FF FF FF FF FF FF). The purpose of these is unknown, although may be used as data for a service, or as separator of some sort for different types of StreetPass services.
 +
 
 +
Observed services (leading titleID 0x00 removed, 6*0xff ignored) on 68K probe requests between 2013-08-24 and 2014-06-29 in various european locations.
 +
 
 +
The fact that a same titleID can have different flags should be noted.
 +
 
 +
  0db6-00100000 5
 +
  0db6-00110000 20
 +
 
 +
{| class="wikitable" border="1"
 +
|-
 +
!  Occurrences
 +
!  TitleID
 +
!  Flags
 +
|-
 +
| 131
 +
| 0208
 +
| 00000000
 +
|-
 +
| 58
 +
| 0516
 +
| 00010000
 +
|-
 +
| 56
 +
| 053f
 +
| 00100000
 +
|-
 +
| 55
 +
| 0306
 +
| 00100000
 +
|-
 +
| 44
 +
| 0862
 +
| 00110000
 +
|-
 +
| 26
 +
| 09f1
 +
| 00110000
 +
|-
 +
| 20
 +
| 0db6
 +
| 00110000
 +
|-
 +
| 18
 +
| 0516
 +
| 00110000
 +
|-
 +
| 18
 +
| 0205
 +
| 00110010
 +
|-
 +
| 17
 +
| 0ec4
 +
| 00110000
 +
|-
 +
| 17
 +
| 0300
 +
| 00110000
 +
|-
 +
| 16
 +
| 055d
 +
| 00110000
 +
|-
 +
| 13
 +
| 08d3
 +
| 00010000
 +
|-
 +
| 13
 +
| 053b
 +
| 00100000
 +
|-
 +
| 12
 +
| 0916
 +
| 00100000
 +
|-
 +
| 12
 +
| 07ad
 +
| 00100000
 +
|-
 +
| 12
 +
| 0306
 +
| 00110000
 +
|-
 +
| 12
 +
| 0300
 +
| 00100000
 +
|-
 +
| 11
 +
| 0916
 +
| 00110000
 +
|-
 +
| 9
 +
| 0b1d
 +
| 00110000
 +
|-
 +
| 8
 +
| 0ec4
 +
| 00100000
 +
|-
 +
| 7
 +
| 080f
 +
| 00110000
 +
|-
 +
| 7
 +
| 07c8
 +
| 00100000
 +
|-
 +
| 6
 +
| 038a
 +
| 00100000
 +
|-
 +
| 5
 +
| 0f30
 +
| 00110000
 +
|-
 +
| 5
 +
| 0db6
 +
| 00100000
 +
|-
 +
| 5
 +
| 0910
 +
| 00110000
 +
|-
 +
| 5
 +
| 0862
 +
| 00100000
 +
|-
 +
| 5
 +
| 053f
 +
| 00110000
 +
|-
 +
| 5
 +
| 0522
 +
| 00110000
 +
|-
 +
| 4
 +
| 07ad
 +
| 00110000
 +
|-
 +
| 3
 +
| 0ae2
 +
| 00110000
 +
|-
 +
| 3
 +
| 09f1
 +
| 00100000
 +
|-
 +
| 3
 +
| 08c5
 +
| 00110000
 +
|-
 +
| 3
 +
| 038c
 +
| 00000000
 +
|-
 +
| 3
 +
| 033b
 +
| 00100000
 +
|-
 +
| 3
 +
| 030b
 +
| 00100000
 +
|-
 +
| 2
 +
| 0ba9
 +
| 00110000
 +
|-
 +
| 2
 +
| 0a53
 +
| 00110000
 +
|-
 +
| 2
 +
| 08d3
 +
| 00100000
 +
|-
 +
| 2
 +
| 07ad
 +
| 00010000
 +
|-
 +
| 2
 +
| 0751
 +
| 00110000
 +
|-
 +
| 2
 +
| 0402
 +
| 00100000
 +
|-
 +
| 1
 +
| 0f82
 +
| 00110000
 +
|-
 +
| 1
 +
| 0f5b
 +
| 00110000
 +
|-
 +
| 1
 +
| 0e7f
 +
| 00110000
 +
|-
 +
| 1
 +
| 0bff
 +
| 00110000
 +
|-
 +
| 1
 +
| 0b1d
 +
| 00100000
 +
|-
 +
| 1
 +
| 0ad6
 +
| 00010000
 +
|-
 +
| 1
 +
| 0a90
 +
| 00110000
 +
|-
 +
| 1
 +
| 0a05
 +
| 00100000
 +
|-
 +
| 1
 +
| 073c
 +
| 00110000
 +
|-
 +
| 1
 +
| 06da
 +
| 00100000
 +
|-
 +
| 1
 +
| 05aa
 +
| 00110000
 +
|-
 +
| 1
 +
| 05a5
 +
| 00110000
 +
|-
 +
| 1
 +
| 053b
 +
| 00110000
 +
|-
 +
| 1
 +
| 04ca
 +
| 00110000
 +
|-
 +
| 1
 +
| 038a
 +
| 00110000
 +
|-
 +
| 1
 +
| 033b
 +
| 00110000
 +
|-
 +
| 1
 +
| 030b
 +
| 00110000
 +
|-
 +
| 1
 +
| 0305
 +
| 00000010
 +
|}
    
===== Unknown 2-byte Field =====
 
===== Unknown 2-byte Field =====
TuxSH
516

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Retrieved from "https://www.3dbrew.org/wiki/Special:MobileDiff/7006...18988"

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