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Minor edits to update the system description to new release

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Signed-off-by: Joachim Strömbergson <joachim@assured.se>
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Joachim Strömbergson 2023-03-22 15:08:39 +01:00
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doc/system_description/system_description.md
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@ -24,9 +24,10 @@ The intended users of this document are:
## Introduction
The TKey is a USB-connected, RISC-V based application platform. The
purpose of the TKey is to provide a secure environment
for applications that provides some security functionality needed by the
device user. Some examples of such security functionality are:
purpose of the TKey is to provide a secure environment for TKey device
apps that provides some security functionality to the client as needed
by the use case and device user. Some examples of such security
functionality are:
- TOTP token generators
- Signing oracles
@ -88,9 +89,9 @@ The TKey as a project, system and secure application platform
consists of a number of subsystems and components, modules, support
libraries etc. Roughly these can be divided into:
- TKey boards. PCB designs including schematics, Bill of Material (BOM)
and layout, as needed for development, production and and general usage
of the TKey devices
- TKey boards. PCB designs including schematics, Bill of Material
(BOM) and layout, as needed for development, production and and
general usage of the TKey devices
- TKey programmer. SW, PCB designs including schematics, Bill of
Material (BOM) and layout, as needed for development, production
@ -99,14 +100,16 @@ libraries etc. Roughly these can be divided into:
- USB to UART controller. FW for the MCU implementing the USB host
interface on the TKey
- application_fpga. FPGA design with cores including CPU and memory that
implements the secure application platform
- application_fpga. FPGA design with cores including CPU, TRNG, UART
FW ROM and RAM that together form the the secure application
platform
- application_fpga FW. The base software running on the CPU as needed to
boot, load applications, measure applications, dderive base secret etc
- application_fpga FW. The base software running on the CPU as needed
to boot the device, load applications, measure applications, derive
the CDI base secret etc
- One or more applications loaded onto the application_fpga to provide
some functionality to the user of the host
- One or more TKey device apps loaded onto the application_fpga to
provide some functionality to the user of the host
- host side application loader. Software that talks to the FW in the
application_fpga to load a secure application
@ -115,11 +118,11 @@ libraries etc. Roughly these can be divided into:
the TKey device connected to a host
- host side secure application. Software that communicates with the
secure application running in the application_fpga as needed to solve
a security objective
secure application running in the application_fpga as needed to
solve a security objective
- application_fpga FW SDK. Tools, libraries, documentation and examples
to support development of the application_fpga firmware
- application_fpga FW SDK. Tools, libraries, documentation and
examples to support development of the application_fpga firmware
- secure application SDK. Tools, libraries, documentation and examples
to support development of the secure applications to be loaded onto