mirror of
https://github.com/QuilibriumNetwork/ceremonyclient.git
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dbd95bd9e9
* v2.1.0 [omit consensus and adjacent] - this commit will be amended with the full release after the file copy is complete * 2.1.0 main node rollup
41 lines
1.1 KiB
Go
41 lines
1.1 KiB
Go
// -*- go -*-
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//
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// Copyright (c) 2021-2024 Markku Rossi
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//
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// Ed25519 key generation in QCL. This file is derived from Go's
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// crypto/ed25519 package. The original copyright notice follows:
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//
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// Copyright 2016 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Package ed25519 implements the Ed25519 signature algorithm.
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package ed25519
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import (
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"crypto/ed25519/internal/edwards25519"
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"crypto/sha512"
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)
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// NewKeyFromSeed calculates a private key and a public key from a
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// seed. RFC 8032's private keys correspond to seeds in this package.
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func NewKeyFromSeed(seed [SeedSize]byte) (PublicKey, PrivateKey) {
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digest := sha512.Sum512(seed)
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digest[0] &= 248
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digest[31] &= 127
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digest[31] |= 64
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var A edwards25519.ExtendedGroupElement
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var hBytes [32]byte
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copy(hBytes, digest)
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edwards25519.GeScalarMultBase(&A, &hBytes)
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var publicKeyBytes [32]byte
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A.ToBytes(&publicKeyBytes)
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var privateKey [64]byte
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copy(privateKey, seed)
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copy(privateKey[32:], publicKeyBytes)
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return publicKeyBytes, privateKey
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}
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