1 // Copyright (c) 2021 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
4 5 // Package edwards25519 implements group logic for the twisted Edwards curve
6 //
7 // -x^2 + y^2 = 1 + -(121665/121666)*x^2*y^2
8 //
9 // This is better known as the Edwards curve equivalent to Curve25519, and is
10 // the curve used by the Ed25519 signature scheme.
11 //
12 // Most users don't need this package, and should instead use crypto/ed25519 for
13 // signatures, golang.org/x/crypto/curve25519 for Diffie-Hellman, or
14 // github.com/gtank/ristretto255 for prime order group logic.
15 //
16 // However, developers who do need to interact with low-level edwards25519
17 // operations can use filippo.io/edwards25519, an extended version of this
18 // package repackaged as an importable module.
19 //
20 // (Note that filippo.io/edwards25519 and github.com/gtank/ristretto255 are not
21 // maintained by the Go team and are not covered by the Go 1 Compatibility Promise.)
22 package edwards25519
23