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keypair.go
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/
keypair.go
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/*
* Copyright 2018-2023, CS Systemes d'Information, http://csgroup.eu
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package crypt
import (
"crypto/rand"
"crypto/rsa"
"crypto/x509"
"encoding/pem"
"golang.org/x/crypto/ssh"
"github.com/CS-SI/SafeScale/v22/lib/utils/fail"
)
// GenerateRSAKeyPair creates a key pair
func GenerateRSAKeyPair(name string) (privKey string, pubKey string, ferr fail.Error) {
if name == "" {
return "", "", fail.InvalidParameterCannotBeEmptyStringError("name")
}
privateKey, err := rsa.GenerateKey(rand.Reader, 2048)
if err != nil {
return "", "", fail.ConvertError(err)
}
publicKey := privateKey.PublicKey
pub, err := ssh.NewPublicKey(&publicKey)
if err != nil {
return "", "", fail.ConvertError(err)
}
pubBytes := ssh.MarshalAuthorizedKey(pub)
priBytes := x509.MarshalPKCS1PrivateKey(privateKey)
priKeyPem := pem.EncodeToMemory(
&pem.Block{
Type: "RSA PRIVATE KEY",
Bytes: priBytes,
},
)
return string(priKeyPem), string(pubBytes), nil
}