Difference between revisions of "PSPXI:EncryptSignDecryptVerifyAesCcm"
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(Created page with "=Request= {| class="wikitable" border="1" |- ! Index Word ! Description |- | 0 | Header code [0x00050284] |- | 1 | Input buffer size |- | 2 | Output buffer size |- | 3 | Total ...") |
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| Line 59: | Line 59: | ||
=MAC= | =MAC= | ||
| − | For AES-CCM encryption, the output MAC is written to outputbufptr+( | + | For AES-CCM encryption, the output MAC is written to outputbufptr+(totaldatasize). For AES-CCM decryption, the input MAC is located at inputbufptr+(totalassocdata+totaldatasize). For AES-CCM decryption when the calculated MAC is invalid, error-code 0xC9010401 is returned. |
=Description= | =Description= | ||
This is similar to [[PSPXI:EncryptDecryptAes]], except this command is only used for AES-CCM. For AES-CCM encryption, the output buffer size must include the MAC, for AES-CCM decryption the input buffer size must include the MAC. | This is similar to [[PSPXI:EncryptDecryptAes]], except this command is only used for AES-CCM. For AES-CCM encryption, the output buffer size must include the MAC, for AES-CCM decryption the input buffer size must include the MAC. | ||
Latest revision as of 04:11, 31 May 2013
Request[edit]
| Index Word | Description |
|---|---|
| 0 | Header code [0x00050284] |
| 1 | Input buffer size |
| 2 | Output buffer size |
| 3 | Total CBC-MAC associated data, in bytes. |
| 4 | Total data size, in bytes. |
| 5 | MAC size in bytes. |
| 6-8 | Nonce |
| 9 | Algorithm Type (0..5) |
| 10 | Key Type (0..7) |
| 11 | (inbufsize<<8) | 0x4 |
| 12 | Source pointer |
| 13 | (outbufsize<<8) | 0x14 |
| 14 | Destination pointer |
Response[edit]
| Index Word | Description |
|---|---|
| 0 | Header code |
| 1 | Result code |
MAC[edit]
For AES-CCM encryption, the output MAC is written to outputbufptr+(totaldatasize). For AES-CCM decryption, the input MAC is located at inputbufptr+(totalassocdata+totaldatasize). For AES-CCM decryption when the calculated MAC is invalid, error-code 0xC9010401 is returned.
Description[edit]
This is similar to PSPXI:EncryptDecryptAes, except this command is only used for AES-CCM. For AES-CCM encryption, the output buffer size must include the MAC, for AES-CCM decryption the input buffer size must include the MAC.