# Secure storage 

Source: [https://docs.qualcomm.com/doc/80-88500-4/topic/84_Secure_storage_.html](https://docs.qualcomm.com/doc/80-88500-4/topic/84_Secure_storage_.html)

To prevent unauthorized access, Qualcomm fuse programmable read only memory (QFPROM),
    replay protected memory block (RPMB), and secure file system (SFS) are used for securely storing
    the data.

Table : Secure storage support for specific use cases

| Secure storage | Details |
| --- | --- |
| QFPROM | <ul class="ul" id="Secure_storage__84__ul_lcj_ccf_4xb"><br>                <li class="li">QFPROM along with configurable fuses provides the programmable spare region</li><br><br>                <li class="li">It can be used to store the permanent keys or configuration data</li><br><br>              </ul> |
| RPMB | <ul class="ul" id="Secure_storage__84__ul_hx1_dcf_4xb"><br>                <li class="li">RPMB has limited storage space and is mostly used for keeping version<br>                  information of device images, such as, SFS files, device key files, Keymaster<br>                  keyblob, and so on</li><br><br>                <li class="li"><br>                  <p class="p">It can be used for storage of configuration requiring significantly limited<br>                    storage size</p><br><br>                </li><br><br>              </ul> |
| SFS | Provides encrypted secure storage for TZ, secure application, and modem |

For information on secure storage interfaces in TZ, see <cite class="cite">Qualcomm Trusted Execution
        Environment Version (TEE) 5.0 Reference Manual </cite> (80-NH537-4).

**Parent Topic:** [Security](https://docs.qualcomm.com/doc/80-88500-4/topic/76_Security.html)

Last Published: Aug 18, 2023

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