Difference between revisions of "SHA Registers"
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| Line 14: | Line 14: | ||
|- | |- | ||
| style="background: green" | Yes | | style="background: green" | Yes | ||
| − | | [[# | + | | [[#SHA_BLKCNT|SHA_BLKCNT]] |
| 0x1000A004 | | 0x1000A004 | ||
| 4 | | 4 | ||
| Line 26: | Line 26: | ||
|- | |- | ||
| style="background: green" | Yes | | style="background: green" | Yes | ||
| − | | [[# | + | | [[#SHA_INFIFO|SHA_INFIFO]] |
| 0x1000A080 | | 0x1000A080 | ||
| 0x40 | | 0x40 | ||
| Line 71: | Line 71: | ||
|} | |} | ||
| − | == | + | == SHA_BLKCNT == |
| − | This reg contains the total size of the data written to REG_SHA_IN. | + | This reg contains the total size of the data written to REG_SHA_IN, this field is updated when performing hash-function final-round. |
== SHA_HASH == | == SHA_HASH == | ||
This reg contains the SHA* hash after the final round, and the internal state during normal rounds. It is possible to write the internal state using this register. | This reg contains the SHA* hash after the final round, and the internal state during normal rounds. It is possible to write the internal state using this register. | ||
| − | == | + | == SHA_INFIFO == |
The data to be hashed must be written here. The data must be padded with 0x00s to align with the register size (if needed). | The data to be hashed must be written here. The data must be padded with 0x00s to align with the register size (if needed). | ||
Revision as of 02:37, 20 March 2015
Registers
| Old3DS | Name | Address | Width | Used by |
|---|---|---|---|---|
| Yes | SHA_CNT | 0x1000A000 | 4 | Boot9, Process9 |
| Yes | SHA_BLKCNT | 0x1000A004 | 4 | Process9 |
| Yes | SHA_HASH | 0x1000A040 | 0x20 | Process9 |
| Yes | SHA_INFIFO | 0x1000A080 | 0x40 | Boot9, Process9 |
SHA_CNT
| Bits | Description |
|---|---|
| 0-1 | 0=Hash ready, 1=Normal, 2=Final Round |
| 2 | ? |
| 3 | Output Endianess (0=Little endian, 1=Big endian) |
| 4-5 | Mode (0=SHA256, 1=SHA224, 2=3=SHA1) |
| 6 | ? |
| 7 | ? |
| 8 | Unknown. When set, the *entire* ARM9 hangs/crashes when attempting to read REG_SHA_IN. |
| 9 | ? |
| 10 | ? |
| 16 | Enable |
| 17 | 1 when FIFO expects read/write |
SHA_BLKCNT
This reg contains the total size of the data written to REG_SHA_IN, this field is updated when performing hash-function final-round.
SHA_HASH
This reg contains the SHA* hash after the final round, and the internal state during normal rounds. It is possible to write the internal state using this register.
SHA_INFIFO
The data to be hashed must be written here. The data must be padded with 0x00s to align with the register size (if needed).