* Update feature list
* Be more positive about the state and quality of the library
* Mention ECDSA key operations explicitly in short library description
* Say "secret key" instead of "private key
* Define "experimental"
Co-Authored-By: Gregory Maxwell <greg@xiph.org>
bde2a32286 Convert bench.h to fixed-point math (Wladimir J. van der Laan)
Pull request description:
Convert `bench.h` to fixed-point math, removing all use of float math from the repository:
- Use 64-bit integer microsecond timestamps
- Use decimal fixed-point math for formatting numbers
It turned out to be a little trickier than I expected because of formatting and rounding. But, output should be the same before and after.
I used the following to test the number formatting: https://gist.github.com/laanwj/f971bfbe018e39c19677a21ff954d0c7
ACKs for top commit:
real-or-random:
ACK bde2a32286 I've read the code in detail and I've tested it. I haven't explicitly tested the formatting function with known/hardcoded inputs.
Tree-SHA512: 41ab6024b88c65a4b194272097c70d527bedb396dc7ab9d3d93165f1a19d31092798370f66399443a8d5393d0a6dcf5825679de5a325550865cfdef3586bf64c
- Use 64-bit integer microsecond timestamps
- Use fixed-point math for formatting numbers
Then, remove "except in benchmarks" exception from `README.md`.
78c3836341 Add SECURITY.md (Jonas Nick)
Pull request description:
Fixes#646
WIP because the secp256k1-security@bitcoincore.org email address doesn't exist yet. But it seems like the right place for vulnerability reports. security@bitcoincore.org would have the downside that it perhaps reaches more people than necessary. Ideally secp256k1-security would just forward to the three maintainers listed in SECURITY.md. @sipa @apoelstra is it okay to put you there? Fwiw I'm opting out for now because three people should be enough.
@sipa do you know who to talk to about adding secp256k1-security@bitcoincore.org and the specifics about how it would work?
ACKs for top commit:
real-or-random:
ACK 78c3836341 I looked at the diff and verified my fingerprint
Tree-SHA512: 53a989615665cf8cf0c6a70d3bc2c4b71b68178cae40b2a7881aa9eba24732d126ba1e258a9fc127c69b47bb3025943097300cfcbbe18736cbf92ff4f3a901e0
We don't want floating types for various reasons, e.g.,
- Their representation and often their behavior is implementation-defined.
- Many targets don't support them.
make ECMULT_GEN_PREC_BITS configurable
ecmult_static_context.h: add compile time config assertion (#3) - Prevents accidentally using a file which was generated with a
different configuration.
README: mention valgrind issue
With --with-ecmult-gen-precision=8, valgrind needs a max stack size
adjustment to not run into a stack switching heuristic:
http://valgrind.org/docs/manual/manual-core.html
> -max-stackframe= [default: 2000000]
> The maximum size of a stack frame. If the stack pointer moves by more than this amount then Valgrind will assume that the program is switching to a different stack.
You may need to use this option if your program has large stack-allocated arrays.
basic-config: undef ECMULT_WINDOW_SIZE before (re-)defining it
Marko Bencun
Tim Ruffing
Wladimir J. van der Laan
Jonas Nick
djb
Gregory Maxwell
MarcoFalke
Pieter Wuille
Lucas Betschart
Cory Fields
John Driscoll