I don't believe we have support for this, though it doesn't look that difficult to implement. We'd be happy to include it in the library.
I think the ECDomainParameters class has all the magic numbers you need, in combination with the r, s values and the message. Feel free to email me, or post to the list if you get stuck. Regards, Pete Dettman On 30/10/2013 6:20 AM, Mankowski, Chris wrote: > I知 looking for a way to extract an ECDSA key from a signature as > shown in the C++ code below > > http://github.com/bitcoin/bitcoin/blob/9b1200c23bbced3a78b58067c1f6414103653795/src/key.cpp > > > Does Bouncy Castle now, or in the future offer this feature? > > The problem I知 trying to solve is validating a Bitcoin transaction, > and a message that comes from the Bitcoin-QT client. > > If anyone can point me in the right direction, or assist in porting > this function over to BouncyCastle I壇 be greatly appreciative. > ------------------------------------------------------------------------ > Notice: This e-mail message and any attachment to this e-mail message > may contain information that is confidential, proprietary, privileged, > legally privileged and/or exempt from disclosure under applicable law. > If you are not the intended recipient, please accept this as notice > that any disclosure, copying, distribution or use of the information > contained in this transmission is strictly prohibited. NFP reserves > the right, to the extent and under circumstances permitted by > applicable law, to retain, monitor and intercept e-mail messages to > and from its systems. > > Any views or opinions expressed in this e-mail are those of the sender > and do not necessarily express those of NFP. Although this > transmission and any attachment are believed to be free of any virus > or other defect that might affect any computer system into which it is > received and opened, it is the responsibility of the recipient to > ensure that it is virus free and no responsibility is accepted by NFP, > its subsidiaries and affiliates, as applicable, for any loss or damage > arising in any way from its use. > > If you have received this e-mail in error, please immediately contact > the sender by return e-mail or by telephone at 212-301-4000 and > destroy the material in its entirety, whether electronic or hard copy > format.
