Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Faster ECDH #372

Draft
wants to merge 3 commits into
base: master
Choose a base branch
from
Draft

Faster ECDH #372

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
5233b69
use PointJacobi for ECDH
tomato42 Nov 15, 2019
22a651e
use the master branch of python-ecdsa with fast ECC math
tomato42 Nov 15, 2019
9f70b95
silence pylint
tomato42 Jan 2, 2020
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
5 changes: 5 additions & 0 deletions .travis.yml
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -147,6 +147,11 @@ before_install:
- git fetch origin master:refs/remotes/origin/master
- curl -L https://codeclimate.com/downloads/test-reporter/test-reporter-latest-linux-amd64 > ./cc-test-reporter
- chmod +x ./cc-test-reporter
- pushd "$(mktemp -d)"
- git clone https://github.com/tomato42/python-ecdsa.git
- cd python-ecdsa
- python setup.py install
- popd

install:
- if [[ -e build-requirements-${TRAVIS_PYTHON_VERSION}.txt ]]; then travis_retry pip install -r build-requirements-${TRAVIS_PYTHON_VERSION}.txt; else travis_retry pip install -r build-requirements.txt; fi
Expand Down
9 changes: 7 additions & 2 deletions tlslite/utils/ecc.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -20,8 +20,13 @@ def decodeX962Point(data, curve=ecdsa.NIST256p):
yCoord = bytesToNumber(parser.getFixBytes(bytelength))
if parser.getRemainingLength():
raise DecodeError("Invalid length of point encoding for curve")
return ecdsa.ellipticcurve.Point(curve.curve, xCoord, yCoord)

if not xCoord or not yCoord:
raise DecodeError("Zero as key share from peer")
if not curve.curve.contains_point(xCoord, yCoord):
raise DecodeError("Key share from peer is not a valid point on curve")
# pylint: disable=c-extension-no-member
return ecdsa.ellipticcurve.PointJacobi(curve.curve, xCoord, yCoord, 1)
# pylint: enable=c-extension-no-member

def encodeX962Point(point):
"""Encode a point in X9.62 format"""
Expand Down