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Bitcoin Forum > Bitcoin > Development & Technical Discussion (Moderators: gmaxwell, achow101) > [Bounty] Sign & Verify Message in Java
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piuk
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January 06, 2013, 01:18:22 AM
 #1
Looking for someone to implement Bitcoin-Qt's sign and verify message functionality in Java. Using either bouncycastle or the Java SE crypto libs.

15 BTC bounty.
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Mike Hearn
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January 06, 2013, 12:43:52 PM
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Anyone who attempts this should note that it'll require you to implement ECDSA key recovery:

   https://github.com/sipa/bitcoin/commit/6e223c405988a1002eeeee69db88a1128a38b0a3
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January 06, 2013, 01:08:27 PM
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Preferably open source as sign-and-verify would be very useful in MultiBit too.
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January 06, 2013, 10:45:27 PM
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I implemented this in bitcoinj and claimed the bounty.
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January 07, 2013, 08:02:19 AM
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Nice one Mike !
:-)
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January 07, 2013, 09:48:40 AM
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Quote from: Mike Hearn on January 06, 2013, 10:45:27 PM
I implemented this in bitcoinj and claimed the bounty.

\o/ nice!
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