AES Registers: Difference between revisions

(3 intermediate revisions by 3 users not shown)

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=== AES_CNT.input_word_order ===

If reversed, writes to AES_KEY*FIFO and AES_WRFIFO fill the FIFO backwards. For AES_WRFIFO, this means that every 16-byte block will have its words in the reverse order, but the order of these blocks remains the same. ~~AES_CNT~~ is unaffected by this field. AES_MAC?

If reversed, writes to AES_KEY*FIFO and AES_WRFIFO fill the FIFO backwards. For AES_WRFIFO, this means that every 16-byte block will have its words in the reverse order, but the order of these blocks remains the same. AES_CTR is unaffected by this field. AES_MAC?

=== AES_CNT.output_word_order ===

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| -

| No

|-

| 0x20

| [[System_SaveData|System Save Data]] encryption key during [[System_Transfer|System Transfers]]. See [[System_Transfer#System_Save_Data_Transfer|System Save Data Transfer]].

| Bootrom.

| NATIVE_FIRM

| Yes

|-

| 0x24

Line 575:

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| Movable.sed key.

This is the keyslot used for movable.sed encryption + AES-CBC MAC with the import/export [[FSPXI:ImportIntegrityVerificationSeed|commands]].

This is the keyslot used for movable.sed encryption + AES-CBC MAC with the import/export [[FSPXI:ImportIntegrityVerificationSeed|commands]]. The keyYs used for crypto/CMAC are different, but both can be found in process9 rodata.

~~| Bootrom~~.

| Bootrom.

| NATIVE_FIRM.

| -

| Yes

|-

| 0x36

| ~~Unknown.~~ Used by friends module.

| Used by the [[Friend_Services|the friends module]] for [[Friend_Services#Approach_Contexts|ApproachContext]] encryption. See [[FRDU:GetMyApproachContext]].

See [[~~PSPXI~~:~~EncryptDecryptAes|EncryptDecryptAes~~]].

| Bootrom.

@@ Line 243: / Line 243: @@
 === AES_CNT.input_word_order ===
-If reversed, writes to AES_KEY*FIFO and AES_WRFIFO fill the FIFO backwards. For AES_WRFIFO, this means that every 16-byte block will have its words in the reverse order, but the order of these blocks remains the same. AES_CNT is unaffected by this field. AES_MAC?
+If reversed, writes to AES_KEY*FIFO and AES_WRFIFO fill the FIFO backwards. For AES_WRFIFO, this means that every 16-byte block will have its words in the reverse order, but the order of these blocks remains the same. AES_CTR is unaffected by this field. AES_MAC?
 === AES_CNT.output_word_order ===
@@ Line 482: / Line 482: @@
 | -
 | No
+|-
+| 0x20
+| [[System_SaveData|System Save Data]] encryption key during [[System_Transfer|System Transfers]]. See [[System_Transfer#System_Save_Data_Transfer|System Save Data Transfer]].
+| Bootrom.
+| NATIVE_FIRM
+| NATIVE_FIRM
+| Yes
 |-
 | 0x24
@@ Line 575: / Line 582: @@
 | Movable.sed key.
-This is the keyslot used for movable.sed encryption + AES-CBC MAC with the import/export [[FSPXI:ImportIntegrityVerificationSeed|commands]].
+This is the keyslot used for movable.sed encryption + AES-CBC MAC with the import/export [[FSPXI:ImportIntegrityVerificationSeed|commands]]. The keyYs used for crypto/CMAC are different, but both can be found in process9 rodata.
-| Bootrom.
 | Bootrom.
+| NATIVE_FIRM.
 | -
 | Yes
 |-
 | 0x36
-| Unknown. Used by friends module.
+| Used by the [[Friend_Services|the friends module]] for [[Friend_Services#Approach_Contexts|ApproachContext]] encryption. See [[FRDU:GetMyApproachContext]].
-See [[PSPXI:EncryptDecryptAes|EncryptDecryptAes]].
 | Bootrom.
 | Bootrom.