Certificates

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Overview

Certificates contain cryptography information for verifying Signatures. These certificates are also signed.

Each certificate follows the following format:

Description
Signature Data
Certificate Info
Key Data

Signature Data

Offset Size Description
0x0 0x4 Signature Type
0x4 Depends on Signature Type Signature
From end of Signature 0x3C Padding

Signature Type

Value Signature Method
0x00010000 RSA-4098 SHA1
0x00010001 RSA-2048 SHA1
0x00010003 RSA-4098 SHA256
0x00010004 RSA-2048 SHA256

Certificate Info

Offset Size Description
0x0 0x40 Issuer
0x40 0x4 Tag?
0x44 0x40 Name
0x84 0x4 Unknown

Key Data

RSA

This contains the Public Key(i.e. Modulus & Public Exponent). For RSA-2048 public keys, this section is as follows:

Offset Size Description
0x0 0x100 Modulus
0x100 0x4 Public Exponent
0x104 0x34 Padding