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	This PR adds an Alpine package registry. You can follow [this tutorial](https://wiki.alpinelinux.org/wiki/Creating_an_Alpine_package) to build a *.apk package for testing. This functionality is similar to the Debian registry (#22854) and therefore shares some methods. I marked this PR as blocked because it should be merged after #22854.  --------- Co-authored-by: techknowlogick <techknowlogick@gitea.io> Co-authored-by: silverwind <me@silverwind.io> Co-authored-by: Giteabot <teabot@gitea.io>
		
			
				
	
	
		
			61 lines
		
	
	
	
		
			1.4 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
			
		
		
	
	
			61 lines
		
	
	
	
		
			1.4 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
// Copyright 2021 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package util
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import (
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	"crypto"
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	"crypto/rand"
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	"crypto/rsa"
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	"crypto/x509"
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	"encoding/pem"
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	"github.com/minio/sha256-simd"
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)
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// GenerateKeyPair generates a public and private keypair
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func GenerateKeyPair(bits int) (string, string, error) {
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	priv, _ := rsa.GenerateKey(rand.Reader, bits)
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	privPem, err := pemBlockForPriv(priv)
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	if err != nil {
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		return "", "", err
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	}
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	pubPem, err := pemBlockForPub(&priv.PublicKey)
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	if err != nil {
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		return "", "", err
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	}
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	return privPem, pubPem, nil
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}
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func pemBlockForPriv(priv *rsa.PrivateKey) (string, error) {
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	privBytes := pem.EncodeToMemory(&pem.Block{
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		Type:  "RSA PRIVATE KEY",
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		Bytes: x509.MarshalPKCS1PrivateKey(priv),
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	})
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	return string(privBytes), nil
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}
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func pemBlockForPub(pub *rsa.PublicKey) (string, error) {
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	pubASN1, err := x509.MarshalPKIXPublicKey(pub)
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	if err != nil {
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		return "", err
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	}
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	pubBytes := pem.EncodeToMemory(&pem.Block{
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		Type:  "PUBLIC KEY",
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		Bytes: pubASN1,
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	})
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	return string(pubBytes), nil
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}
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// CreatePublicKeyFingerprint creates a fingerprint of the given key.
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// The fingerprint is the sha256 sum of the PKIX structure of the key.
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func CreatePublicKeyFingerprint(key crypto.PublicKey) ([]byte, error) {
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	bytes, err := x509.MarshalPKIXPublicKey(key)
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	if err != nil {
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		return nil, err
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	}
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	checksum := sha256.Sum256(bytes)
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	return checksum[:], nil
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}
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