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https://github.com/eriknellessen/Virtual-Keycard
Decrypt and sign your e-mails with your smartphone instead of using a contactless smartcard
https://github.com/eriknellessen/Virtual-Keycard
android smartcard
Last synced: about 2 months ago
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Decrypt and sign your e-mails with your smartphone instead of using a contactless smartcard
- Host: GitHub
- URL: https://github.com/eriknellessen/Virtual-Keycard
- Owner: eriknellessen
- Created: 2015-04-15T18:15:18.000Z (over 9 years ago)
- Default Branch: master
- Last Pushed: 2022-02-16T12:23:42.000Z (almost 3 years ago)
- Last Synced: 2024-08-01T01:28:52.054Z (5 months ago)
- Topics: android, smartcard
- Language: Java
- Homepage:
- Size: 1.26 MB
- Stars: 20
- Watchers: 3
- Forks: 7
- Open Issues: 1
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
- awesome-smart-card - Virtual-Keycard - mails with your smartphone instead of using a contactless smartcard (Applications)
README
# Welcome
This software system allows you to decrypt and sign your e-mails with your smartphone instead of using a contactless smartcard. The smartphone communicates with your PC via NFC (as a contactless smartcard would).
The associated bachelor's thesis can be found here:
http://sar.informatik.hu-berlin.de/research/publications/SAR-PR-2014-08/SAR-PR-2014-08_.pdf
Warning: This is just proof-of-concept code and should _NOT_ be used in
production environments
# Tested platforms:
* Android 4.4 Kitkat on Nexus 5
* Android 4.4 Kitkat on LG G2 Mini
The Android app only works on Android 4.4 Kitkat and higher.
# Building
[](https://gitlab.com/eriknellessen/Virtual-Keycard/-/pipelines?ref=master)[](https://gitlab.com/api/v4/projects/15583775/jobs/artifacts/master/download?job=debugTests)[](https://gitlab.com/api/v4/projects/15583775/jobs/artifacts/master/download?job=code_quality)
To create this app, eclipse was used.
To use the app, build it using the makefile in the following way:
```sh
make ANDROID_SDK_ROOT=$ANDROID_SDK_ROOT
```
I used adt-bundle-linux-x86-20131030 as SDK. The OS on which I build the app is Debian Jessie (32 Bit).
# Installing
Executing the command
```sh
make Android-install
```
will install the app on your smartphone. Make sure it is connected to your PC and USB debugging is enabled!
# Using
For usage, see page 48 and following of the bachelor's thesis.
To get a certificate onto the smartphone, you may use the Makefile.
This will create the PKCS15 files on the smartphone:
```sh
make create-pkcs15-files
```
This will generate a 2048 Bit RSA Key on the smartphone:
```sh
make generate-key
```
This will show you the slot id, which you might need for the next step if it is not 01:
```sh
make show-slot-and-id
```
This will create a Certificate Signing Request. You may specify the information for the distinguished name and the slot, if necessary:
```sh
make create-csr
```
So in the end you could do something like:
```sh
make create-csr SLOT=02 COMMON_NAME="Erik Nellessen" [email protected]
```
You can have a look at the CSR by executing:
```sh
make show-csr
```
Now you need to sign the certificate signing request with a CA. The Makefile target creates a demo CA using openssl. After that, it signs the certificate. You may specify the path to your openssl.cnf in the OPENSSL_CONF environment variable.
```sh
make get-cert
```
The last step is to store the certificate on the smartphone:
```sh
make store-certificate
```
Now you can configure Thunderbird/Icedove as described in the bachelor's thesis on page 51 and start decrypting/signing e-mails!
Have fun!