mirror of
https://github.com/urbit/shrub.git
synced 2024-11-30 22:15:47 +03:00
496e62e01d
This translates the meson build to nix. Previously, we had our ge-additions package just manually compiled in instead of having its own file.
21 lines
1003 B
Markdown
21 lines
1003 B
Markdown
# Group Element Additions
|
|
|
|
Urbit uses the ge.h code from the ed25519 library, which was ported from the
|
|
ref10 SUPERCOP public domain implementation. That implementation doesn't
|
|
contain several functions needed for ring signatures.
|
|
|
|
This file does. The providence of this code starts with Adam Langley taking
|
|
the SUPERCOP C implementation and producing an ed25519 implementation for it
|
|
in golang (https://godoc.org/golang.org/x/crypto/ed25519). (If you look at
|
|
the go code, you'll see the comments are the same as the comments in the C
|
|
implementation.)
|
|
|
|
From there, the DEDIS group from ETH Zurich took that implementation and
|
|
added the additional methods to make a generalized ECC point library. While
|
|
their project as a whole is MPL, they deliberately left their ed25519
|
|
implementation under the Go BSD-3 license:
|
|
(https://github.com/dedis/kyber/blob/master/group/edwards25519/LICENSE)
|
|
|
|
This file is a fairly straight translation from Go to C of DEDIS' additions,
|
|
so this falls under the same license.
|