Difference between revisions of "/dev/sha"
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'''/dev/sha''' is an IPC interface for the [[Hardware/SHA-1 engine | SHA-1 engine]] that accepts IOS_Open, IOS_Close & IOCTLV commands. | '''/dev/sha''' is an IPC interface for the [[Hardware/SHA-1 engine | SHA-1 engine]] that accepts IOS_Open, IOS_Close & IOCTLV commands. | ||
| − | Internally in IOS, it uses 2 FDs: one of 0x10001 normally calculating SHA-1 hashes and 0x10002 when dealing with HMAC key hashes (also based on SHA). Despite this, it is better to do an IOS_Open when using this resource. | + | Internally in IOS, it uses 2 FDs: one of 0x10001 normally calculating SHA-1 hashes and 0x10002 when dealing with HMAC key hashes (also based on SHA). Despite this, it is better to do an IOS_Open when using this resource. |
| + | |||
| + | /dev/sha handles both SHA-1 hashing and HMAC verification in modular IOS versions (IOS28 and later). For IOS22 and earlier, HMAC verification is done in a dedicated separate device called [[:/dev/hmac]]. | ||
== /dev/sha IOS_Ioctlv == | == /dev/sha IOS_Ioctlv == | ||
| Line 20: | Line 22: | ||
| style="vertical-align: top;" rowspan="1" | - | | style="vertical-align: top;" rowspan="1" | - | ||
|- | |- | ||
| − | | style="vertical-align: top;" rowspan="1" | SHA Context | + | | style="vertical-align: top;" rowspan="1" | SHA-1 Context |
| style="vertical-align: top;" rowspan="1" | 0x1c | | style="vertical-align: top;" rowspan="1" | 0x1c | ||
|- | |- | ||
| − | | style="vertical-align: top;" rowspan="1" | | + | | style="vertical-align: top;" rowspan="1" | SHA-1 Hash |
| style="vertical-align: top;" rowspan="1" | 0x14 | | style="vertical-align: top;" rowspan="1" | 0x14 | ||
|- | |- | ||
| Line 33: | Line 35: | ||
| style="vertical-align: top;" rowspan="1" | - | | style="vertical-align: top;" rowspan="1" | - | ||
|- | |- | ||
| − | | style="vertical-align: top;" rowspan="1" | SHA Context | + | | style="vertical-align: top;" rowspan="1" | SHA-1 Context |
| style="vertical-align: top;" rowspan="1" | 0x1c | | style="vertical-align: top;" rowspan="1" | 0x1c | ||
|- | |- | ||
| − | | style="vertical-align: top;" rowspan="1" | | + | | style="vertical-align: top;" rowspan="1" | SHA-1 Hash |
| style="vertical-align: top;" rowspan="1" | 0x14 | | style="vertical-align: top;" rowspan="1" | 0x14 | ||
|- | |- | ||
| Line 46: | Line 48: | ||
| style="vertical-align: top;" rowspan="1" | - | | style="vertical-align: top;" rowspan="1" | - | ||
|- | |- | ||
| − | | style="vertical-align: top;" rowspan="1" | SHA Context | + | | style="vertical-align: top;" rowspan="1" | SHA-1 Context |
| style="vertical-align: top;" rowspan="1" | 0x1c | | style="vertical-align: top;" rowspan="1" | 0x1c | ||
|- | |- | ||
| − | | style="vertical-align: top;" rowspan="1" | | + | | style="vertical-align: top;" rowspan="1" | SHA-1 Hash |
| style="vertical-align: top;" rowspan="1" | 0x14 | | style="vertical-align: top;" rowspan="1" | 0x14 | ||
|- | |- | ||
Revision as of 21:45, 17 January 2023
| This article is a stub. You can help WiiBrew by expanding it. |
/dev/sha is an IPC interface for the SHA-1 engine that accepts IOS_Open, IOS_Close & IOCTLV commands.
Internally in IOS, it uses 2 FDs: one of 0x10001 normally calculating SHA-1 hashes and 0x10002 when dealing with HMAC key hashes (also based on SHA). Despite this, it is better to do an IOS_Open when using this resource.
/dev/sha handles both SHA-1 hashing and HMAC verification in modular IOS versions (IOS28 and later). For IOS22 and earlier, HMAC verification is done in a dedicated separate device called /dev/hmac.
/dev/sha IOS_Ioctlv
| number | Description | in count | out count | vector | vector length |
|---|---|---|---|---|---|
| 0x00 | Initialize Hash Context | 1 | 2 | input data (32-byte aligned) | - |
| SHA-1 Context | 0x1c | ||||
| SHA-1 Hash | 0x14 | ||||
| 0x01 | Contribute Additional Data | 1 | 2 | input data (32-byte aligned) | - |
| SHA-1 Context | 0x1c | ||||
| SHA-1 Hash | 0x14 | ||||
| 0x02 | Finalize Hash | 1 | 2 | input data (32-byte aligned) | - |
| SHA-1 Context | 0x1c | ||||
| SHA-1 Hash | 0x14 | ||||
| 0x03 | ? | ? | ? | ? | ? |
| 0x04 | ? | ? | ? | ? | ? |
| 0x0F | some sort of H0,H1,H2 verifying | ? | ? | ? | ? |