PS:EncryptDecryptAes: Difference between revisions

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Yifanlu (talk | contribs)
SSL process passes dst size as word 2. did not check if it is used though.
 
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| Unused
| Destination size in bytes (Unused)
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Latest revision as of 22:54, 23 March 2015

Request

Index Word Description
0 Header code [0x00040204]
1 Size in bytes
2 Destination size in bytes (Unused)
3-6 IV / CTR
7 u8 Algorithm Type (0..5)
8 u8 Key Type (0..7)
9 (size<<4) | 10
10 Source pointer
11 (size<<4) | 12
12 Destination pointer

Response

Index Word Description
0 Header code [0x00040144]
1 Result code
2-5 See here.

Description

This is a wrapper for PSPXI:EncryptDecryptAes. Before using this PSPXI command, PS module will check whether the algorithm type is AES-CCM. PS module will return error-code 0xC90107E8 when the algorithm type is AES-CCM, since PSPXI:EncryptDecryptAes doesn't support AES-CCM. When the algorithm type is AES-CBC, PS module will clear the low 4-bits of the data size.