77 lines
1.7 KiB
Go
77 lines
1.7 KiB
Go
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package utils
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import (
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"crypto/ed25519"
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"crypto/rand"
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"crypto/sha256"
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"encoding/base64"
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"fmt"
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"log"
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"git.nutfactory.org/hoernschen/ActivityPub/config"
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)
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func CreateToken() (err error, token string) {
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b := make([]byte, 8)
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_, err = rand.Read(b)
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if err != nil {
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log.Fatal(err)
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return
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}
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token = fmt.Sprintf("%x", b)
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return
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}
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func CreateUUID() (err error, uuid string) {
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b := make([]byte, 16)
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_, err = rand.Read(b)
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if err != nil {
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log.Fatal(err)
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return
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}
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uuid = fmt.Sprintf("%x-%x-%x-%x-%x", b[0:4], b[4:6], b[6:8], b[8:10], b[10:])
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return
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}
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// TODO: Check if needed
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func Hash(s []byte) (err error, hashString string) {
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h := sha256.New()
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_, err = h.Write(s)
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if nil != err {
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return
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}
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hash := h.Sum(nil)
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hashString = base64.StdEncoding.EncodeToString(hash)
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return
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}
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//TODO: Signing Mechanism?
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func GenerateKeyPair() (publicKey ed25519.PublicKey, privateKey ed25519.PrivateKey, err error) {
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publicKey, privateKey, err = ed25519.GenerateKey(nil)
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return
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}
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func Sign(message []byte) string {
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signatureBytes := ed25519.Sign(config.PrivateKey, message)
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return base64.RawStdEncoding.EncodeToString(signatureBytes)
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}
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func SignContent(content []byte) (signatures map[string]map[string]string) {
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if !config.Signing {
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return
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}
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signatures = make(map[string]map[string]string)
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signatures[config.Homeserver] = make(map[string]string)
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signatures[config.Homeserver][config.KeyId] = Sign(content)
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return
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}
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func VerifySignature(publicKey []byte, message []byte, signature string) bool {
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signatureBytes, err := base64.RawStdEncoding.DecodeString(signature)
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if err != nil {
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return false
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}
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ed25519.Verify(config.PublicKey, message, signatureBytes)
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return true
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}
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