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AMPXI:VerifyDSiWareFooter: Difference between revisions

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correct PXI buffer translation descriptor access types
 
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| Header code [0x004301C8]
| Header code [0x004301C8]
|-
|-
| 1
| 1-2
| TWL TitleID lower word, from the [[DSiWare_Exports|header]].
| u64, TWL Title ID (from [[DSiWare_Exports|header]])
|-
| 2
| TWL TitleID upper word, from the header.
|-
|-
| 3
| 3
| Data buffer size. When the running NATIVE_FIRM only supports [[DSiWare_Exports|DSiWare]] exports format v1, the max size for this is 0xC0, otherwise the max size is 0x1C0.
| Data size
|-
|-
| 4
| 4
| ECDSA signature buffer size, must be 0x3C.
| ECDSA signature size (must be 0x3C)
|-
|-
| 5
| 5
| [[CTCert]] buffer size, must be 0x180.
| [[CTCert]] size (must be 0x180)
|-
|-
| 6
| 6
| APCert buffer size, must be 0x180.
| APCert size (must be 0x180)
|-
|-
| 7
| 7
| u8 [[DSiWare_Exports|DSiWare]] export section index
| u8, [[DSiWare_Exports|DSiWare]] export section index
|-
|-
| 8
| 8
| <nowiki>(DataBufSize<<8) | 0x4</nowiki>
| <nowiki>(DataSize << 8) | 0x6</nowiki>
|-
|-
| 9
| 9
| DataBuf ptr, this buffer contains the hashes from the [[DSiWare_Exports|footer]].
| Data pointer (contains hashes from [[DSiWare_Exports|footer]])
|-
|-
| 10
| 10
| <nowiki>(SigBufSize<<8) | 0x14</nowiki>
| <nowiki>(ECDSASignatureSize << 8) | 0x16</nowiki>
|-
|-
| 11
| 11
| ECDSA signature ptr, this signs the above data-buffer.
| ECDSA signature pointer (signs data)
|-
|-
| 12
| 12
| <nowiki>(CTCertSize<<8) | 0x24</nowiki>
| <nowiki>(CTCertSize << 8) | 0x26</nowiki>
|-
|-
| 13
| 13
| [[CTCert]] buffer ptr, from the footer.
| [[CTCert]] pointer (from [[DSiWare_Exports|footer]])
|-
|-
| 14
| 14
| <nowiki>(APCertSize<<8) | 0x34</nowiki>
| <nowiki>(APCertSize << 8) | 0x36</nowiki>
|-
|-
| 15
| 15
| APCert buffer ptr, from the footer.
| APCert pointer (from [[DSiWare_Exports|footer]])
|}
|}


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|-
|-
| 0
| 0
| Header code
| Header code [0x00430040]
|-
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| 1
| 1
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=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.
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