96 lines
3 KiB
Markdown
96 lines
3 KiB
Markdown
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Bitcoin Core version 0.9.4 is now available from:
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https://bitcoin.org/bin/0.9.4/
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This is a new minor version release, bringing only bug fixes and updated
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translations. Upgrading to this release is recommended.
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Please report bugs using the issue tracker at github:
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https://github.com/bitcoin/bitcoin/issues
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How to Upgrade
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===============
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If you are running an older version, shut it down. Wait until it has completely
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shut down (which might take a few minutes for older versions), then run the
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installer (on Windows) or just copy over /Applications/Bitcoin-Qt (on Mac) or
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bitcoind/bitcoin-qt (on Linux).
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OpenSSL Warning
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================
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OpenSSL 1.0.0p / 1.0.1k was recently released and is being pushed out by
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various operating system maintainers. Review by Gregory Maxwell determined that
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this update is incompatible with the Bitcoin system and could lead to consensus
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forks.
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Bitcoin Core released binaries from https://bitcoin.org are unaffected,
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as are any built with the gitian deterministic build system.
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However, if you are running either
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- The Ubuntu PPA from https://launchpad.net/~bitcoin/+archive/ubuntu/bitcoin
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- A third-party or self-compiled Bitcoin Core
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upgrade to Bitcoin Core 0.9.4, which includes a workaround, **before** updating
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OpenSSL.
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The incompatibility is due to the OpenSSL update changing the
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behavior of ECDSA validation to reject any signature which is
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not encoded in a very rigid manner. This was a result of
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OpenSSL's change for CVE-2014-8275 "Certificate fingerprints
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can be modified".
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We are specifically aware of potential hard-forks due to signature
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encoding handling and had been hoping to close them via BIP62 in 0.10.
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BIP62's purpose is to improve transaction malleability handling and
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as a side effect rigidly defines the encoding for signatures, but the
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overall scope of BIP62 has made it take longer than we'd like to
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deploy.
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0.9.4 changelog
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================
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Validation:
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- `b8e81b7` consensus: guard against openssl's new strict DER checks
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- `60c51f1` fail immediately on an empty signature
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- `037bfef` Improve robustness of DER recoding code
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Command-line options:
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- `cd5164a` Make -proxy set all network types, avoiding a connect leak.
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P2P:
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- `bb424e4` Limit the number of new addressses to accumulate
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RPC:
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- `0a94661` Disable SSLv3 (in favor of TLS) for the RPC client and server.
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Build system:
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- `f047dfa` gitian: openssl-1.0.1i.tar.gz -> openssl-1.0.1k.tar.gz
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- `5b9f78d` build: Fix OSX build when using Homebrew and qt5
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- `ffab1dd` Keep symlinks when copying into .app bundle
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- `613247f` osx: fix signing to make Gatekeeper happy (again)
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Miscellaneous:
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- `25b49b5` Refactor -alertnotify code
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- `2743529` doc: Add instructions for consistent Mac OS X build names
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Credits
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--------
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Thanks to who contributed to this release, at least:
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- Cory Fields
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- Gavin Andresen
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- Gregory Maxwell
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- Jeff Garzik
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- Luke Dashjr
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- Matt Corallo
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- Pieter Wuille
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- Saivann
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- Sergio Demian Lerner
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- Wladimir J. van der Laan
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As well as everyone that helped translating on [Transifex](https://www.transifex.com/projects/p/bitcoin/).
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