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Certificates: Difference between revisions

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Created page with "== Overview == Certificates contain cryptography information for verifying Signatures. These certificates are also signed. Each certificate follows the following format: {| cla..."
 
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== 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 ===
Retrieved from "https://www.3dbrew.org/wiki/Certificates"