ECPy
====
ECPy (pronounced ekpy), is a pure python Elliptic Curve library
providing ECDSA, EDDSA (Ed25519), ECSchnorr, Borromean signatures as well as Point
operations.
Full html documentation is available `here <https://cslashm.github.com/ECPy>`_.
**ECDSA sample**
::
from ecpy.curves import Curve,Point
from ecpy.keys import ECPublicKey, ECPrivateKey
from ecpy.ecdsa import ECDSA
cv = Curve.get_curve('secp256k1')
pu_key = ECPublicKey(Point(0x65d5b8bf9ab1801c9f168d4815994ad35f1dcb6ae6c7a1a303966b677b813b00,
0xe6b865e529b8ecbf71cf966e900477d49ced5846d7662dd2dd11ccd55c0aff7f,
cv))
pv_key = ECPrivateKey(0xfb26a4e75eec75544c0f44e937dcf5ee6355c7176600b9688c667e5c283b43c5,
cv)
signer = ECDSA()
sig = signer.sign(b'01234567890123456789012345678912',pv_key)
assert(signer.verify(b'01234567890123456789012345678912',sig,pu_key))
**Point sample**
::
from ecpy.curves import Curve,Point
cv = Curve.get_curve('secp256k1')
P = Point(0x65d5b8bf9ab1801c9f168d4815994ad35f1dcb6ae6c7a1a303966b677b813b00,
0xe6b865e529b8ecbf71cf966e900477d49ced5846d7662dd2dd11ccd55c0aff7f,
cv)
k = 0xfb26a4e75eec75544c0f44e937dcf5ee6355c7176600b9688c667e5c283b43c5
Q = k*P
R = P+Q
History
=======
1.2.5
-----
Fix issue 19
1.2.4
-----
Fix ECDSA when mesaage hash length is greater than domain order length
Move from distutils to setuptools
1.2.3
-----
Fix ECSchnorr when r is greater than order. Main use case is when
using a hash function with bitlength greater than curve size.
1.2.2
-----
Fix ECDSA with rfc6979. Field was used instead of order for max random.
1.2.1
-----
Missing README update
1.2.0
-----
Fix rfc6979. Now conform to RFC and fully compat with python-ecdsa
(https://github.com/warner/python-ecdsa).
1.1.0
-----
Fix DER encoding for length greater than 128
Declare ONE infinity point per curve.
Consider global (non attached to a curve) infinity point as deprecated
Fix infinity point management in ECDSA
Fix issue #13
1.0.1beta
---------
Merge PR11, fixing an overflow with secp521k1
1.0.0beta
---------
Initial 1.x series (Beta)
Quick Install
=============
From Pypi
---------
::
$ pip install ECPy
From Github
-----------
.. _tarball dist:
From tarball dist
`````````````````
Download last dist tarball.
Untar it
::
$ tar xzvf ECPy-M.m.tar.gz
install it (or use it as is...)
::
$ python3 setup.py install
From sources
````````````
Clone the git repository
Rebuild the tarball
::
$ python3 setup.py sdist
Continue with the created `tarball dist`_.
Generate the documentation
==========================
You can regenerate the doc from git clone
::
$ cd doc
$ make singlehtml
Documentation is in build dir
