From: Richard Moore <me@ricmoo•com>
To: Bitcoin Dev <bitcoin-development@lists•sourceforge.net>
Subject: [Bitcoin-development] Signature with negative integer?
Date: Sat, 19 Jul 2014 00:33:13 -0400 [thread overview]
Message-ID: <FD77BD8C-9772-41C4-B7B3-24F1E944B9E0@ricmoo.com> (raw)
Hey all,
I'm wondering if anyone can help explain to me tx 70f7c15c6f62139cc41afa858894650344eda9975b46656d893ee59df8914a3d...
(https://blockchain.info/tx/70f7c15c6f62139cc41afa858894650344eda9975b46656d893ee59df8914a3d)
The input signature script is:
304402206b5c3b1c86748dcf328b9f3a65e10085afcf5d1af5b40970d8ce3a9355e06b5b0220cdbdc23e6d3618e47056fccc60c5f73d1a542186705197e5791e97f0e6582a3201
Which decodes to:
r= 48560432700441876832361368709121298776045893858160378595187765610521057848155
s= -22732680560694206332190468058638664750027418114195068375538144640549433890254
(http://lapo.it/asn1js/#304402206B5C3B1C86748DCF328B9F3A65E10085AFCF5D1AF5B40970D8CE3A9355E06B5B0220CDBDC23E6D3618E47056FCCC60C5F73D1A542186705197E5791E97F0E6582A32)
The ECC library I'm using is failing to verify this, which I think makes sense, since I the point needs to be positive, no? But it is obviously valid, as it has been verified and spent. I have tried simply modulo curve.order to positive-ify it, but that didn't seem to work either. Given a point P (with Py < 0) is there some fancy way to bring it into the elliptic curve space, such that Px >= 0 and Py >= 0?
Thanks!
RicMoo
.·´¯`·.¸¸.·´¯`·.¸¸.·´¯`·.¸¸.·´¯`·.¸¸.·´¯`·.¸><(((º>
Richard Moore ~ Founder
Genetic Mistakes Software inc.
phone: (778) 882-6125
email: ricmoo@geneticmistakes•com
www: http://GeneticMistakes.com
next reply other threads:[~2014-07-19 5:02 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-19 4:33 Richard Moore [this message]
2014-07-19 7:03 ` Gregory Maxwell
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