Changes

Jump to navigation Jump to search
101 bytes added ,  09:17, 23 April 2013
no edit summary
Line 1: Line 1:  
== Overview ==
 
== Overview ==
Certificates contain cryptography information for verifying Signatures. These certificates are also signed.
+
Certificates contain cryptography information for verifying Signatures. These certificates are also signed. The parent/child relationship between certificates, makes all the certificates effectively signed by 'Root', the public key for which is stored in NATIVE_FIRM.
   −
Each certificate follows the following format:
+
The signature method used to sign the certificate can be determined by checking the Signature Type:
    
{| class="wikitable"
 
{| class="wikitable"
 
|-
 
|-
! Description
+
! Value
 +
! Signature Method
 +
! Signature Size (X)
 +
|-
 +
| 0x010000
 +
| RSA_4096 SHA1
 +
| 0x200
 +
|-
 +
| 0x010001
 +
| RSA_2048 SHA1
 +
| 0x100
 
|-
 
|-
| Signature Data
+
| 0x010002
 +
| Elliptic Curve
 +
| 0x40
 
|-
 
|-
| Certificate Info
+
| 0x010003
 +
| RSA_4096 SHA256
 +
| 0x200
 
|-
 
|-
| Key Data
+
| 0x010004
 +
| RSA_2048 SHA256
 +
| 0x100
 
|}
 
|}
   −
== Signature Data ==
+
== Format ==
    
{| class="wikitable"
 
{| class="wikitable"
Line 28: Line 44:  
|-
 
|-
 
| 0x4
 
| 0x4
| Depends on Signature Type
+
| X
 
| Signature
 
| Signature
 
|-
 
|-
| From end of Signature
+
| 0x4 + X
 
| 0x3C
 
| 0x3C
 
| Padding
 
| Padding
|}
  −
  −
=== Signature Type ===
  −
{| class="wikitable"
   
|-
 
|-
! Value
+
| 0x40 + X
! Signature Method
  −
|-
  −
| 0x00010000
  −
| RSA-4098 SHA1
  −
|-
  −
| 0x00010001
  −
| RSA-2048 SHA1
  −
|-
  −
| 0x00010003
  −
| RSA-4098 SHA256
  −
|-
  −
| 0x00010004
  −
| RSA-2048 SHA256
  −
|}
  −
 
  −
== Certificate Info ==
  −
 
  −
{| class="wikitable"
  −
|-
  −
! Offset
  −
! Size
  −
! Description
  −
|-
  −
| 0x0
   
| 0x40
 
| 0x40
 
| Issuer
 
| Issuer
 
|-
 
|-
| 0x40
+
| 0x80 + X
 
| 0x4
 
| 0x4
| Tag?
+
| Key Type?
 
|-
 
|-
| 0x44
+
| 0x84 + X
 
| 0x40
 
| 0x40
 
| Name
 
| Name
 
|-
 
|-
| 0x84
+
| 0xC4 + X
 
| 0x4
 
| 0x4
 
| Unknown
 
| Unknown
 +
|-
 +
| 0xC8 + X
 +
|
 +
| Public Key
 
|}
 
|}
   −
== Key Data ==
+
== Public Key ==
    
=== RSA ===
 
=== RSA ===
839

edits

Navigation menu