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review.trustedfirmware.org / OP-TEE / optee_examples.git / 5a051771cf47edc891c736f217f9ef9e43b43d99
commit5a051771cf47edc891c736f217f9ef9e43b43d99[log] [tgz]
authorKees Jongenburger <x8-999-github@gmx.com>Mon Dec 10 21:44:42 2018 +0100
committerIgor Opaniuk <igor.opaniuk@linaro.org>Wed Dec 12 20:39:09 2018 +0200
tree2e7e0ccf2265ecdde8708aea69371aaaec787265
parent53893aa12c714d12422f7d7a94f32ccf214fff86 [diff]
IV In AES CRT mode is always 128 bits regarldless the key size

The initial vector in AES CRT mode is the first data block and
therefore has the size of block size as opposed ot the size of
the key. While Rijndael does support different block sizes AES
only supports 128 bits (16 bytes) block. Even with larger keys
sizes ( e.g. 192 or 256 bits) the block size remains 128 bits.
This change introduced a new constant AES_BLOCK_SIZE  and uses
this for IV related operations.

Signed-off-by: Kees Jongenburger <x8-999-github@gmx.com>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>
1 file changed
tree: 2e7e0ccf2265ecdde8708aea69371aaaec787265
  1. acipher/
  2. aes/
  3. docs/
  4. hello_world/
  5. hotp/
  6. random/
  7. secure_storage/
  8. .gitignore
  9. Android.mk
  10. CMakeLists.txt
  11. CMakeToolchain.txt
  12. LICENSE
  13. Makefile
  14. README.md
README.md

OP-TEE Sample Applications

Contents

  1. Introduction
  2. List of sample applications
  3. How to build a Trusted Application

1. Introduction

This document describes the sample applications that are included in the OP-TEE, that aim to showcase specific functionality and use case.

For sake of simplicity, all OP-TEE example test application are prefixed with optee_example_.

2. List of sample applications

Directory hello_world/:

  • A very simple Trusted Application to answer a hello command and incrementing an integer value.
  • Test application: optee_example_hello_world
  • Trusted application UUID: 8aaaf200-2450-11e4-abe2-0002a5d5c51b

Directory random/:

  • Generates a random UUID using capabilities of TEE API (TEE_GenerateRandom()).
  • Test application: optee_example_random
  • Trusted application UUID: b6c53aba-9669-4668-a7f2-205629d00f86

Directory aes/:

  • Runs an AES encryption and decryption from a TA using the GPD TEE Internal Core API. Non secure test application provides the key, initial vector and ciphered data.
  • Test application: optee_example_aes
  • Trusted application UUID: 5dbac793-f574-4871-8ad3-04331ec17f24

Directory secure_storage/:

  • A Trusted Application to read/write raw data into the OP-TEE secure storage using the GPD TEE Internal Core API.
  • Test application: optee_example_secure_storage
  • Trusted application UUID: f4e750bb-1437-4fbf-8785-8d3580c34994

Directory acipher/:

  • Generates an RSA key pair of specified size and encrypts a supplied string with it using the GPD TEE Internal Core API.
  • Test application: optee_example_acipher
  • Trusted application UUID: a734eed9-d6a1-4244-aa50-7c99719e7b7b

3. How to build a Trusted Application

TA basics documentation presents the basics for implementing and building an OP-TEE trusted application.

One can also refer to the examples provided: source files and make scripts.