Difference between revisions of "AMNet:Sign"

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(Created page with "=Request= {| class="wikitable" border="1" |- ! Index Word ! Description |- | 0 | Header code [0x08160146] |- | 1 |? Size 1 |- | 2 |? Size 2 |- | 3-4 | u64, ? |- | 5 |? Size...")
 
(Added information about the IPC, based on the behavior found in the NIM's binary executable.)
Line 9: Line 9:
 
|-
 
|-
 
| 1
 
| 1
|? Size 1
+
|0x3C (Signature output size)
 
|-
 
|-
 
| 2
 
| 2
|? Size 2
+
|0x180 (Certificate output size)
 
|-
 
|-
 
| 3-4
 
| 3-4
| u64, ?
+
| u64, Title id
 
|-
 
|-
 
| 5
 
| 5
|? Size 3
+
|Data input size
 
|-
 
|-
 
| 6
 
| 6
| (? Size 3 << 4) <nowiki>|</nowiki> 0xA
+
| (Input size << 4) <nowiki>|</nowiki> 0xA
 
|-
 
|-
 
| 7
 
| 7
|? Input Pointer 3
+
|Data input pointer
 
|-
 
|-
 
| 8
 
| 8
| (? Size 1 << 4) <nowiki>|</nowiki> 0xC
+
| (0x3C << 4) <nowiki>|</nowiki> 0xC
 
|-
 
|-
 
| 9
 
| 9
|? Output Pointer 1
+
|Signature output pointer
 
|-
 
|-
 
| 10
 
| 10
| (? Size 2 << 4) <nowiki>|</nowiki> 0xC
+
| (0x180 << 4) <nowiki>|</nowiki> 0xC
 
|-
 
|-
 
| 11
 
| 11
|? Output Pointer 2
+
|Certificate output pointer
 
|}
 
|}
  
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|-
 
|-
 
| 2
 
| 2
|?
+
|AM internal error value (? Treated like an error value by NIM)
 
|}
 
|}
 +
 +
=Description=
 +
Signs given data with ECC, returning generated signature and [[Certificates|certificate]].
 +
 +
Certificate is signed with ECDSA with SHA256 and holds an ECC public key.
 +
Signed with the [[AMNet:GetDeviceCert|device certificate]].
 +
ECC public key on certificate appears to be randomly generated on call(?).
 +
 +
Used by NIM to sign a message that's not sent over SOAP, however the device certificate, output signature and output certificate of the message are.

Revision as of 18:14, 4 August 2020

Request

Index Word Description
0 Header code [0x08160146]
1 0x3C (Signature output size)
2 0x180 (Certificate output size)
3-4 u64, Title id
5 Data input size
6 (Input size << 4) | 0xA
7 Data input pointer
8 (0x3C << 4) | 0xC
9 Signature output pointer
10 (0x180 << 4) | 0xC
11 Certificate output pointer

Response

Index Word Description
0 Header code
1 Result code
2 AM internal error value (? Treated like an error value by NIM)

Description

Signs given data with ECC, returning generated signature and certificate.

Certificate is signed with ECDSA with SHA256 and holds an ECC public key. Signed with the device certificate. ECC public key on certificate appears to be randomly generated on call(?).

Used by NIM to sign a message that's not sent over SOAP, however the device certificate, output signature and output certificate of the message are.