Difference between revisions of "PSPXI:EncryptDecryptAes"
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| Line 111: | Line 111: | ||
| 0x2E | | 0x2E | ||
| This is used by the [[StreetPass]] CECD module to generate the CCMP key passed to [[NWM_Services|nwm::CEC]] commands, when beginning StreetPass communications. | | This is used by the [[StreetPass]] CECD module to generate the CCMP key passed to [[NWM_Services|nwm::CEC]] commands, when beginning StreetPass communications. | ||
| + | |- | ||
| + | | 7 | ||
| + | | | ||
| + | | Invalid | ||
| + | |- | ||
| + | | 8 | ||
| + | | 0x36 | ||
| + | | Unknown, support for this keytype was added in newer a NATIVE_FIRM version. When the running NATIVE_FIRM doesn't support this keytype, the result is the same as using keytype7. | ||
| + | |- | ||
| + | | >=9 | ||
| + | | | ||
| + | | Invalid, same as keytype7. | ||
|} | |} | ||
=Description= | =Description= | ||
This is used to encrypt/decrypt data via the [[AES]] engine. AES-CCM is not supported by this command, [[PSPXI:EncryptSignDecryptVerifyAesCcm]] must be used for AES-CCM instead. | This is used to encrypt/decrypt data via the [[AES]] engine. AES-CCM is not supported by this command, [[PSPXI:EncryptSignDecryptVerifyAesCcm]] must be used for AES-CCM instead. | ||
Revision as of 16:57, 3 June 2013
Request
| Index Word | Description |
|---|---|
| 0 | Header code [0x000401C4] |
| 1 | Size in bytes |
| 2-5 | IV / CTR |
| 6 | u8 Algorithm Type (0..5) |
| 7 | u8 Key Type (0..7) |
| 8 | (size<<8) | 0x4 |
| 9 | Source pointer |
| 10 | (size<<8) | 0x14 |
| 11 | Destination pointer |
Response
| Index Word | Description |
|---|---|
| 0 | Header code [0x00040140] |
| 1 | Result code |
| 2-5 | MAC |
MAC
For CBC mode, the output MAC is the last 16-bytes of the ciphertext. For the other modes, this field is the same as the input IV/CTR.
Algorithm Types
| Type | Description |
|---|---|
| 0 | CBC Encrypt |
| 1 | CBC Decrypt |
| 2 | CTR Encrypt |
| 3 | CTR Decrypt |
| 4 | CCM Encrypt |
| 5 | CCM Decrypt |
Key Types
| Type | AES Engine Keyslot | Description |
|---|---|---|
| 0 | 0x0D | Used to decrypt the SSL client cert/private-key stored in ClCertA. |
| 1 | 0x2D | Used to generate the UDS local-WLAN CCMP key. |
| 2 | 0x31 | This is used by NS for the APT AES-CCM Wrap/Unwrap commands. These two NS commands are used by the Mii Maker application for the encrypted Mii data in the Mii QR codes. |
| 3 | 0x38 | BOSS |
| 4 | 0x32 | ? |
| 5 | 0x39 | This is used by the Download Play module. |
| 6 | 0x2E | This is used by the StreetPass CECD module to generate the CCMP key passed to nwm::CEC commands, when beginning StreetPass communications. |
| 7 | Invalid | |
| 8 | 0x36 | Unknown, support for this keytype was added in newer a NATIVE_FIRM version. When the running NATIVE_FIRM doesn't support this keytype, the result is the same as using keytype7. |
| >=9 | Invalid, same as keytype7. |
Description
This is used to encrypt/decrypt data via the AES engine. AES-CCM is not supported by this command, PSPXI:EncryptSignDecryptVerifyAesCcm must be used for AES-CCM instead.