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28 Commits

Author SHA1 Message Date
Gustav Simonsson 371871d685 parmas, crypto, core, core/vm: homestead consensus protocol changes 
* change gas cost for contract creating txs
* invalidate signature with s value greater than secp256k1 N / 2
* OOG contract creation if not enough gas to store code
* new difficulty adjustment algorithm
* new DELEGATECALL op code
 2016-02-18 10:08:11 +01:00
Felix Lange 02356b36d6 crypto/secp256k1: remove dependency on libgmp 
Turns out we actually don't need it, USE_NUM_NONE works
because we also set USE_FIELD_INV_BUILTIN.
 2015-12-03 21:12:13 +01:00
Gustav Simonsson c8ad64f33c crypto, crypto/ecies, crypto/secp256k1: libsecp256k1 scalar mult 
thanks to Felix Lange (fjl) for help with design & impl
 2015-11-30 13:43:32 +01:00
Gustav Simonsson 27a50c8f4b core/secp256k1: update libsecp256k1 Go wrapper and tests 2015-11-30 13:24:04 +01:00
Felix Lange e344e1d490 crypto/secp256k1: drop pkgsrc paths from CFLAGS 
They cause compiler warnings for people who don't have these
directories. People with pkgsrc can add the directory through CGO_CFLAGS
instead.
 2015-11-17 09:53:10 +01:00
Felix Lange 5159f8f649 crypto/secp256k1: raise internal errors as recoverable Go panic 2015-11-17 09:53:10 +01:00
Felix Lange 1b29aed128 crypto/secp256k1: verify recovery ID before calling libsecp256k1 
The C library treats the recovery ID as trusted input and crashes
the process for invalid values, so it needs to be verified before
calling into C. This will inhibit the crash in #1983.

Also remove VerifySignature because we don't use it.
 2015-11-17 09:51:59 +01:00
Felix Lange 16b0bc7c3b crypto/secp256k1: add C compiler flags for pkgsrc 
pkgsrc is a cross-platform package manager that also
supports OS X.
 2015-11-03 10:33:31 +01:00
Gustav Simonsson f32fa075f1 core/secp256k1: update libsecp256k1 Go wrapper and tests 2015-10-09 14:47:55 +02:00
Gustav Simonsson 1d20b0247c Update libsecp256k1 2015-09-28 17:46:38 +02:00
Fynn 7065ebd2ed FreeBSD support 2015-07-28 19:16:16 -03:00
Felix Lange bfbcfbe4a9 all: fix license headers one more time 
I forgot to update one instance of "go-ethereum" in commit 3f047be5a.
 2015-07-23 18:35:11 +02:00
Felix Lange 3f047be5aa all: update license headers to distiguish GPL/LGPL 
All code outside of cmd/ is licensed as LGPL. The headers
now reflect this by calling the whole work "the go-ethereum library".
 2015-07-22 18:51:45 +02:00
Felix Lange ea54283b30 all: update license information 2015-07-07 14:12:44 +02:00
Gustav Simonsson 9918b6c84e Remove the awesome, ever misunderstood entropy mixing 2015-05-12 17:18:30 +02:00
Noel Maersk 958c04e79a doc: crypto/secp256k1 GMP dependency package name. 
Linux build documentation is mostly geared towards Ubuntu 14.04 (LTS).
Appropriate package is called `libgmp-dev` there.

Note that on pristine installations building `geth` with godep will
fail because this header is missing. This is not documented in the
top-level README, but is on the wiki:

https://github.com/ethereum/go-ethereum/wiki/Installation-Instructions-for-Ubuntu#building-geth-command-line-client

That page recommends `libgmp3-dev`, which ATM provides same version
as `libgmp-dev`.
 2015-04-23 17:33:48 +03:00
Maran 04e216319e Adding flags to facilitate cross compiling to ARM 2015-04-22 17:04:46 +02:00
Gustav Simonsson 941f051358 libsecp256k1 #define NDEBUG 2015-04-07 18:09:58 +02:00
obscuren 50bbdfe582 Link GMP 2015-04-07 15:20:24 +02:00
Gustav Simonsson d9b37b6da7 Update Go wrapper around libbsecp256k1 2015-04-07 12:40:31 +02:00
Gustav Simonsson f4d4f1ccb2 Update bitcoin secp256k1 lib 2015-04-07 12:14:05 +02:00
obscuren 8f69b5c7a2 Added invalid sec key test 2015-02-16 13:19:57 +01:00
obscuren 238f39a42e Validate seckey when generating pub key 2015-02-15 02:20:31 +01:00
Gustav Simonsson f35d62b759 Remove secp256_rand.go and update tests 2015-02-13 18:25:25 +01:00
Gustav Simonsson 8c056aebe1 Set both key generation and ECDSA nonce to use mixed entropy 
* Move random entropy functions to new package randentropy
* Add function to get n bytes entropy where up to first 32
  bytes are mixed with OS entropy sources
 2015-02-10 22:49:28 +01:00
obscuren 19cff8ecca Fixed n 2015-01-31 17:50:28 +01:00
obscuren a008c21cf0 Fixed Sign nonce 2015-01-31 17:44:34 +01:00
obscuren 67f9783e6a Moved `obscuren` secp256k1-go 2015-01-22 00:35:00 +01:00