Title: OpenCryptoChip
Author: trac
Date: 2016-12-15 22:44



# An Open Crypto Chip

## The Layer Cake Architecture Picture
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![layer-cake.jpg]({attach}/OpenCryptoChip/layer-cake.jpg)

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## Use Cases

* RPKI/DNSSEC Signing
* Transport VPNs
* Routers and TCP/AO
* Email
* Federations, Identity Systems, SSO etc
* Password Stretching & HMAC:ing
* PGP and SSH Keys on a Stick
* High Quality Entropy Randomness
* A Communications Terminal Doing One Thing Well, Like Jabber w/o X11
* HSM for Pond, OTR identity keys, ssh private keys, etc. (i.e. key gen, store, import/export non X.509 packages)
* Password management


![cryptech venn.png]({attach}/OpenCryptoChip/cryptech%20venn.png)

## Basic Functions of Crypto Chip

* Key Generation
* Key Storage
* Key Wrap
* Key Unwrap
* Hash
* Sign
* M of N Sign
* Verify Signature
* Encrypt
* Decrypt
* KDFs, e.g. Password Stretching (a la PBKDF2)
* Random (RO + noisy diode?)


## Key wrapping
We need to support key wrapping. Some pointers:


- https://en.wikipedia.org/wiki/Key_Wrap
- http://tools.ietf.org/html/rfc5297
- http://csrc.nist.gov/groups/ST/toolkit/documents/kms/key-wrap.pdf
- https://tools.ietf.org/html/rfc3394
- https://tools.ietf.org/html/rfc5649



## Things we Should Try To Do, Even if we Can't Do Them Perfectly

* Tamper Protection (wipe on signal, suggest detectors, suggest potting features)
* Side Channel Attack Reduction




# Rough Cut at v0.01 Proof of Concept Feature Set
As a proof of concept, to validate as much as possible the assurance of the tools and methods, and as a demonstration of the project tools, team, and architecture, we have a [proposed version 0.01 product]({filename}RoughV1.md) as a proof of concept and a demonstration of the project tools, team, and architecture
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# Ongoing Decisions and Research

* Security Target Description
* Performance Target(s)
* Tool-Chain Investigation
* Prototype Design
* Testing / Assurance Methods for all Components
* Verilog/RTL assurance, with open source and with proprietary
* Prototyping Platform(s)
* Documentation, Decision History, & Transparency

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# Ongoing Development

* [SUNET is sponsoring the first two development steps]({filename}SunetInitialDevelopment.md) currently being done.
* [ Investigation and planning of a TRNG with entropy sources]({filename}TRNGDevelopment.md)
* [Investigation of possible EDA tools and ways to do open and assured HW development"]({filename}EDAToolchainSurvey.md)
* [Collection about side-channel attacks and detection, mitigation methods]({filename}SideChannel.md)


# v0.1 Major Sub-Projects

## Security Goals and Documentation

* Agreement
* Specification


## Development Platform

* The Bunnie laptop Novena. Includes a Xilinx Spartan 6 LX45 FPGHA. The specs, drivers, source for Novena can be found here: http://www.kosagi.com/w/index.php?title=Novena_Main_Page



* TerasIC C5G Cyclone 5 GX Starter Kit. Includes an Altera C5GX FPGA. This board is used for core, subsystem development and verification. Info, documentation and ordering of the TerasIC board can be found here: http://www.terasic.com.tw/cgi-bin/page/archive.pl?Language=English&CategoryNo=167&No=830


Here is a writeup on how to [setup and run coretest_hashes on the C5G board]({filename}CoretestHashesC5G.md).


* TerasIC DE0-Nano board. This tiny, USB powered board is used for core development and verification. Info, documentation, resources, ordering of the TerasIC board can be found here: http://www.terasic.com.tw/cgi-bin/page/archive.pl?Language=English&CategoryNo=139&No=593



## Hardware Development Tools


## Component Libraries

* Research
* Select
* [On-chip Interconnect Standards]({filename}InterconnectStandards.md) to use.


## Methods and Validation

* Overall Strategy
* Following the Tool-Chain


## Detailed Specification

* Feature Set


## QA & Documentation

## Green/Yellow Software Support

* Spec / ABI
* Development
* Documentationa and Testing


## Assured Linux Platform

* DDC Compiler
* System Build
* Minimal Component Set


# v0.1 Project Timeline

## February 2014

* Specification of v0.1 Goals and Feature Set
* Security Goals & Documentation Outline


## July 2014

* SHA & AES


## September 2014

* TRNG
* Assured Linux Platform - Initial Report


## November 2014

* Security Goals & Documentation Overall and v0.1
* RSA Signing on Bunnie Board
* Assured Linux Platform - Compiler


## March 2015

* v0.1 Protoype


# Future Development
The v0.1 version of CrypTech is not the last version nor the only possible version. The project for example consider possible [ASIC Implementations]({filename}ASICImplementations.md).