Ecliptic Kurwa

Partial, broken and unusable implementation of DSTU 4145-200.

Usage

Generate key and select curve to sign or verify data:

from ukurwa4145 import curve, Priv

with curve('DSTU_257') as cd:
    priv, pub = Priv.generate()

    s, r = priv.sign(value_hash=0xFEFEFEFEFEFDEADF0)
    pub.verify(value_hash=0xFEFEFEFEFEFDEADF0, s=s, r=r)

    pub.verify(value_hash=0xFEFEFEFEFEFDEADF0, s=123, r=123)
    # Exception:
    #    ukurwa4145.crypto.SignatureError: Signature does not match

Links

• DSTU 4145 spec: http://info-stand.com/downloads/dstu/dstu-4145-2002/dstu-4145-2002.pdf
• Sister library: https://github.com/muromec/jkurwa
• Gost block ciphers compiled to js: https://github.com/muromec/em-gost