Difference between revisions of "Certificates"
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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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Revision as of 06:52, 23 April 2013
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 |