Difference between revisions of "AMPXI:VerifyDSiWareFooter"
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TimmSkiller (talk | contribs) (correct PXI buffer translation descriptor access types) |
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| (One intermediate revision by one other user not shown) | |||
| Line 8: | Line 8: | ||
| Header code [0x004301C8] | | Header code [0x004301C8] | ||
|- | |- | ||
| − | | 1 | + | | 1-2 |
| − | | TWL | + | | u64, TWL Title ID (from [[DSiWare_Exports|header]]) |
| − | |||
| − | |||
| − | |||
|- | |- | ||
| 3 | | 3 | ||
| − | | Data | + | | Data size |
|- | |- | ||
| 4 | | 4 | ||
| − | | ECDSA signature | + | | ECDSA signature size (must be 0x3C) |
|- | |- | ||
| 5 | | 5 | ||
| − | | [[CTCert]] | + | | [[CTCert]] size (must be 0x180) |
|- | |- | ||
| 6 | | 6 | ||
| − | | APCert | + | | APCert size (must be 0x180) |
|- | |- | ||
| 7 | | 7 | ||
| − | | u8 [[DSiWare_Exports|DSiWare]] export section index | + | | u8, [[DSiWare_Exports|DSiWare]] export section index |
|- | |- | ||
| 8 | | 8 | ||
| − | | <nowiki>( | + | | <nowiki>(DataSize << 8) | 0x6</nowiki> |
|- | |- | ||
| 9 | | 9 | ||
| − | | | + | | Data pointer (contains hashes from [[DSiWare_Exports|footer]]) |
|- | |- | ||
| 10 | | 10 | ||
| − | | <nowiki>( | + | | <nowiki>(ECDSASignatureSize << 8) | 0x16</nowiki> |
|- | |- | ||
| 11 | | 11 | ||
| − | | ECDSA signature | + | | ECDSA signature pointer (signs data) |
|- | |- | ||
| 12 | | 12 | ||
| − | | <nowiki>(CTCertSize<<8) | | + | | <nowiki>(CTCertSize << 8) | 0x26</nowiki> |
|- | |- | ||
| 13 | | 13 | ||
| − | | [[CTCert]] | + | | [[CTCert]] pointer (from [[DSiWare_Exports|footer]]) |
|- | |- | ||
| 14 | | 14 | ||
| − | | <nowiki>(APCertSize<<8) | | + | | <nowiki>(APCertSize << 8) | 0x36</nowiki> |
|- | |- | ||
| 15 | | 15 | ||
| − | | APCert | + | | APCert pointer (from [[DSiWare_Exports|footer]]) |
|} | |} | ||
| Line 61: | Line 58: | ||
|- | |- | ||
| 0 | | 0 | ||
| − | | Header code | + | | Header code [0x00430040] |
|- | |- | ||
| 1 | | 1 | ||
| Line 69: | Line 66: | ||
=Description= | =Description= | ||
This verifies the ECDSA signature and certificates from the [[DSiWare_Exports|DSiWare]] export footer. The input CTCert is verified with a DER stored in NATIVE_FIRM, separate DERs are used for retail and dev/debug. | This verifies the ECDSA signature and certificates from the [[DSiWare_Exports|DSiWare]] export footer. The input CTCert is verified with a DER stored in NATIVE_FIRM, separate DERs are used for retail and dev/debug. | ||
| + | |||
| + | When the running NATIVE_FIRM only supports [[DSiWare_Exports|DSiWare]] exports format v1, the max data size is 0xC0, otherwise the max size is 0x1C0. | ||
Latest revision as of 20:25, 27 June 2022
Request[edit]
| Index Word | Description |
|---|---|
| 0 | Header code [0x004301C8] |
| 1-2 | u64, TWL Title ID (from header) |
| 3 | Data size |
| 4 | ECDSA signature size (must be 0x3C) |
| 5 | CTCert size (must be 0x180) |
| 6 | APCert size (must be 0x180) |
| 7 | u8, DSiWare export section index |
| 8 | (DataSize << 8) | 0x6 |
| 9 | Data pointer (contains hashes from footer) |
| 10 | (ECDSASignatureSize << 8) | 0x16 |
| 11 | ECDSA signature pointer (signs data) |
| 12 | (CTCertSize << 8) | 0x26 |
| 13 | CTCert pointer (from footer) |
| 14 | (APCertSize << 8) | 0x36 |
| 15 | APCert pointer (from footer) |
Response[edit]
| Index Word | Description |
|---|---|
| 0 | Header code [0x00430040] |
| 1 | Result code |
Description[edit]
This verifies the ECDSA signature and certificates from the DSiWare export footer. The input CTCert is verified with a DER stored in NATIVE_FIRM, separate DERs are used for retail and dev/debug.
When the running NATIVE_FIRM only supports DSiWare exports format v1, the max data size is 0xC0, otherwise the max size is 0x1C0.