AMNet:Sign

From 3dbrew
Revision as of 19:14, 4 August 2020 by Luigoalma (talk | contribs) (Added information about the IPC, based on the behavior found in the NIM's binary executable.)
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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.