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Untrusted-Enclave Remote Attestation code sample

This code sample contains an implementation of Integrating Remote Attestation with Transport Layer Security, with the modification of the untrusted side.

Requirements

To use this code sample, one needs to register at Intel website for dev IAS service access. Once the registration is finished, the following stuff should be ready:

  1. An SPID assigned by Intel
  2. IAS API Key assigned by Intel

Both of these information could be found in the new Intel Trusted Services API Management Portal. Please log into this portal and switch to "Manage subscriptions" page on the top right corner to see your SPID and API keys. Either primary key or secondary key works.

Save them to ue-ra-server's bin/spid.txt and bin/key.txt respectively. Size of these two files should be 32 or 33.

Custom CA/client setup

To establish a TLS channel, we need a CA and generates a client cert for mutual authentication. We store them at cert.

  1. Generate CA private key openssl ecparam -genkey -name prime256v1 -out ca.key

  2. Generate CA cert openssl req -x509 -new -SHA256 -nodes -key ca.key -days 3650 -out ca.crt

  3. Generate Client private key openssl ecparam -genkey -name prime256v1 -out client.key

  4. Export the keys to pkcs8 unencrypted format openssl pkcs8 -topk8 -nocrypt -in client.key -out client.pkcs8

  5. Generate Client CSR openssl req -new -SHA256 -key client.key -nodes -out client.csr

  6. Generate Client Cert openssl x509 -req -extfile <(printf "subjectAltName=DNS:localhost,DNS:www.example.com") -days 3650 -in client.csr -CA ca.crt -CAkey ca.key -CAcreateserial -out client.crt

  7. Intel CA report signing pem. Download and uncompress: https://software.intel.com/sites/default/files/managed/7b/de/RK_PUB.zip

Embedding IAS credentials to ue-ra-server

enclave/src/lib.rs contains two funcs load_spid and get_ias_api_key. These two functions are configured to load spid/api key from spid.txt and key.txt from bin directory respectively. One can either adjust the file paths/names or copy the spid/key to bin. spid.txt and key.txt should only contain one line of 32 chars such as DEADBEAFDEADBEAFDEADBEAFDEADBEAF.

Run

Start server

cd ue-ra-server
make
cd bin
./app (add --unlink if your spid's type is unlinkable)

Start client

cd ue-ra-client
cargo run

Start client-go (golang should be installed)

cd ue-ra-client-go
make
cd bin
./app

Start client-java (Java:1.8+, mvn)

cd ue-ra-client-java
mvn install
java -jar target/ue-ra-client-java-0.0.1-SNAPSHOT.jar