Skip to content
GitLab
Menu
Projects
Groups
Snippets
Help
Help
Support
Community forum
Keyboard shortcuts
?
Submit feedback
Contribute to GitLab
Sign in
Toggle navigation
Menu
Open sidebar
matrix-org
Olm
Commits
b46ac919
Commit
b46ac919
authored
May 01, 2019
by
Aaron Raimist
Committed by
Hubert Chathi
May 14, 2019
Browse files
Convert README.rst to markdown
Signed-off-by:
Aaron Raimist
<
aaron@raim.ist
>
parent
73288e6f
Changes
1
Show whitespace changes
Inline
Side-by-side
README.
rst
→
README.
md
View file @
b46ac919
Olm
# Olm
===
An implementation of the Double Ratchet cryptographic ratchet described by
An implementation of the Double Ratchet cryptographic ratchet described by
https://whispersystems.org/docs/specifications/doubleratchet/, written in C and
https://whispersystems.org/docs/specifications/doubleratchet/, written in C and
C++11 and exposed as a C API.
C++11 and exposed as a C API.
The specification of the Olm ratchet can be found in
`<
docs/olm.
rst>`_
.
The specification of the Olm ratchet can be found in
[
docs/olm.
md
](
docs/olm.md
)
.
This library also includes an implementation of the Megolm cryptographic
This library also includes an implementation of the Megolm cryptographic
ratchet, as specified in
`<
docs/megolm.
rst>`_
.
ratchet, as specified in
[
docs/megolm.
md
](
docs/megolm.md
)
.
Building
## Building
--------
To build olm as a shared library run either:
To build olm as a shared library run either:
.. code::
bash
```
bash
cmake
.
-Bbuild
cmake
. -B
build
cmake
--build
build
cmake --build build
```
or:
or:
.. code::
bash
```
bash
make
make
```
Using cmake is the preferred method for building the shared library; the
Using cmake is the preferred method for building the shared library; the
Makefile may be removed in the future.
Makefile may be removed in the future.
To run the tests when using cmake, run:
To run the tests when using cmake, run:
.. code:: bash
```
bash
cd
build/tests
cd build/tests
ctest .
ctest .
```
To run the tests when using make, run:
To run the tests when using make, run:
.. code::
bash
```
bash
make
test
make test
```
To build the JavaScript bindings, install emscripten from http://kripken.github.io/emscripten-site/ and then run:
To build the JavaScript bindings, install emscripten from http://kripken.github.io/emscripten-site/ and then run:
.. code::
bash
```
bash
make js
make js
```
Note that if you run emscripten in a docker container, you need to pass through
Note that if you run emscripten in a docker container, you need to pass through
the EMCC_CLOSURE_ARGS environment variable.
the EMCC_CLOSURE_ARGS environment variable.
To build the android project for Android bindings, run:
To build the android project for Android bindings, run:
.. code::
bash
```
bash
cd
android
cd android
./gradlew clean assembleRelease
./gradlew clean assembleRelease
```
To build the Xcode workspace for Objective-C bindings, run:
To build the Xcode workspace for Objective-C bindings, run:
.. code::
bash
```
bash
cd
xcode
cd xcode
pod
install
pod install
open OLMKit.xcworkspace
open OLMKit.xcworkspace
```
To build the Python bindings, first build olm as a shared library as above, and
To build the Python bindings, first build olm as a shared library as above, and
then run:
then run:
.. code::
bash
```
bash
cd
python
cd python
make
make
```
to make both the Python 2 and Python 3 bindings. To make only one version, use
to make both the Python 2 and Python 3 bindings. To make only one version, use
``make olm-python2``
or
``make olm-python3``
instead of just
``make``
.
``make olm-python2``
or
``make olm-python3``
instead of just
``make``
.
...
@@ -80,27 +77,25 @@ to make both the Python 2 and Python 3 bindings. To make only one version, use
...
@@ -80,27 +77,25 @@ to make both the Python 2 and Python 3 bindings. To make only one version, use
To build olm as a static library (which still needs libstdc++ dynamically) run
To build olm as a static library (which still needs libstdc++ dynamically) run
either:
either:
.. code::
bash
```
bash
cmake
.
-Bbuild
-DBUILD_SHARED_LIBS
=
NO
cmake
. -B
build
-DBUILD_SHARED_LIBS=NO
cmake
--
build
build
cmake --build build
```
or
or
.. code::
bash
```
bash
make static
make static
```
The library can also be used as a dependency with CMake using:
The library can also be used as a dependency with CMake using:
.. code:: cmake
```
cmake
find_package
(
Olm::Olm REQUIRED
)
find_package(Olm::Olm REQUIRED)
target_link_libraries
(
my_exe Olm::Olm
)
target_link_libraries(my_exe Olm::Olm)
```
Release process
## Release process
---------------
First: bump version numbers in
``common.mk``
,
``CMakeLists.txt``
,
First: bump version numbers in
``common.mk``
,
``CMakeLists.txt``
,
``javascript/package.json``
,
``python/olm/__version__.py``
,
``OLMKit.podspec``
,
``javascript/package.json``
,
``python/olm/__version__.py``
,
``OLMKit.podspec``
,
...
@@ -113,34 +108,32 @@ git.
...
@@ -113,34 +108,32 @@ git.
It's probably sensible to do the above on a release branch (
``release-vx.y.z``
It's probably sensible to do the above on a release branch (
``release-vx.y.z``
by convention), and merge back to master once the release is complete.
by convention), and merge back to master once the release is complete.
.. code:: bash
```
bash
make clean
make clean
# build and test C library
make
test
# build and test C library
# build and test JS wrapper
make test
make js
(
cd
javascript
&&
npm run
test
)
npm pack javascript
# build and test JS wrapper
VERSION
=
x.y.z
make js
scp olm-
$VERSION
.tgz packages@ares.matrix.org:packages/npm/olm/
(cd javascript && npm run test)
git tag
$VERSION
-s
npm pack javascript
git push
--tags
VERSION=x.y.z
# OLMKit CocoaPod release
scp olm-$VERSION.tgz packages@ares.matrix.org:packages/npm/olm/
# Make sure the version OLMKit.podspec is the same as the git tag
git tag $VERSION -s
# (this must be checked before git tagging)
git push --tags
pod spec lint OLMKit.podspec
--use-libraries
--allow-warnings
pod trunk push OLMKit.podspec
--use-libraries
--allow-warnings
# Check the pod has been successully published with:
pod search OLMKit
```
# OLMKit CocoaPod release
## Design
# Make sure the version OLMKit.podspec is the same as the git tag
# (this must be checked before git tagging)
pod spec lint OLMKit.podspec --use-libraries --allow-warnings
pod trunk push OLMKit.podspec --use-libraries --allow-warnings
# Check the pod has been successully published with:
pod search OLMKit
Design
------
Olm is designed to be easy port to different platforms and to be easy
Olm is designed to be easy port to different platforms and to be easy
to write bindings for.
to write bindings for.
...
@@ -150,46 +143,40 @@ API. As development has progressed, it has become clear that C++ gives little
...
@@ -150,46 +143,40 @@ API. As development has progressed, it has become clear that C++ gives little
advantage, and new functionality is being added in C, with C++ parts being
advantage, and new functionality is being added in C, with C++ parts being
rewritten as the need ariases.
rewritten as the need ariases.
Error Handling
### Error Handling
~~~~~~~~~~~~~~
All C functions in the API for olm return
``olm_error()``
on error.
All C functions in the API for olm return
``olm_error()``
on error.
This makes it easy to check for error conditions within the language bindings.
This makes it easy to check for error conditions within the language bindings.
Random Numbers
### Random Numbers
~~~~~~~~~~~~~~
Olm doesn't generate random numbers itself. Instead the caller must
Olm doesn't generate random numbers itself. Instead the caller must
provide the random data. This makes it easier to port the library to different
provide the random data. This makes it easier to port the library to different
platforms since the caller can use whatever cryptographic random number
platforms since the caller can use whatever cryptographic random number
generator their platform provides.
generator their platform provides.
Memory
### Memory
~~~~~~
Olm avoids calling malloc or allocating memory on the heap itself.
Olm avoids calling malloc or allocating memory on the heap itself.
Instead the library calculates how much memory will be needed to hold the
Instead the library calculates how much memory will be needed to hold the
output and the caller supplies a buffer of the appropriate size.
output and the caller supplies a buffer of the appropriate size.
Output Encoding
### Output Encoding
~~~~~~~~~~~~~~~
Binary output is encoded as base64 so that languages that prefer unicode
Binary output is encoded as base64 so that languages that prefer unicode
strings will find it easier to handle the output.
strings will find it easier to handle the output.
Dependencies
### Dependencies
~~~~~~~~~~~~
Olm uses pure C implementations of the cryptographic primitives used by
Olm uses pure C implementations of the cryptographic primitives used by
the ratchet. While this decreases the performance it makes it much easier
the ratchet. While this decreases the performance it makes it much easier
to compile the library for different architectures.
to compile the library for different architectures.
Contributing
## Contributing
------------
Please see `<CONTRIBUTING.rst>`_ when making contributions to the library.
Security assessment
Please see
[
CONTRIBUTING.md
](
CONTRIBUTING.md
)
when making contributions to the library.
-------------------
## Security assessment
Olm 1.3.0 was independently assessed by NCC Group's Cryptography Services
Olm 1.3.0 was independently assessed by NCC Group's Cryptography Services
Practive in September 2016 to check for security issues: you can read all
Practive in September 2016 to check for security issues: you can read all
...
@@ -197,18 +184,16 @@ about it at
...
@@ -197,18 +184,16 @@ about it at
https://www.nccgroup.trust/us/our-research/matrix-olm-cryptographic-review/
https://www.nccgroup.trust/us/our-research/matrix-olm-cryptographic-review/
and https://matrix.org/blog/2016/11/21/matrixs-olm-end-to-end-encryption-security-assessment-released-and-implemented-cross-platform-on-riot-at-last/
and https://matrix.org/blog/2016/11/21/matrixs-olm-end-to-end-encryption-security-assessment-released-and-implemented-cross-platform-on-riot-at-last/
Bug reports
##
Bug reports
-----------
Please file bug reports at https://github.com/matrix-org/olm/issues
Please file bug reports at https://github.com/matrix-org/olm/issues
What's an olm?
## What's an olm?
--------------
It's a really cool species of European troglodytic salamander.
It's a really cool species of European troglodytic salamander.
http://www.postojnska-jama.eu/en/come-and-visit-us/vivarium-proteus/
http://www.postojnska-jama.eu/en/come-and-visit-us/vivarium-proteus/
Legal Notice
## Legal Notice
------------
The software may be subject to the U.S. export control laws and regulations
The software may be subject to the U.S. export control laws and regulations
and by downloading the software the user certifies that he/she/it is
and by downloading the software the user certifies that he/she/it is
...
...
Write
Preview
Supports
Markdown
0%
Try again
or
attach a new file
.
Attach a file
Cancel
You are about to add
0
people
to the discussion. Proceed with caution.
Finish editing this message first!
Cancel
Please
register
or
sign in
to comment