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generate_key_pair.go
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/
generate_key_pair.go
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/**
* @file
* @copyright defined in go-seele/LICENSE
*/
package util
import (
"crypto/ecdsa"
"fmt"
"github.com/seeleteam/go-seele/common"
"github.com/seeleteam/go-seele/common/hexutil"
"github.com/seeleteam/go-seele/crypto"
"github.com/spf13/cobra"
)
// GetGenerateKeyPairCmd represents the generateKeyPair command
func GetGenerateKeyPairCmd(name string) (cmds *cobra.Command) {
var shard *uint
var generateKeyPairCmd = &cobra.Command{
Use: "key",
Short: "generate a key pair with specified shard number",
Long: "generate a key pair and print them with hex values\n For example:\n" + name + " key --shard 1",
Run: func(cmd *cobra.Command, args []string) {
publicKey, privateKey, err := GenerateKey(*shard)
if err != nil {
fmt.Println(err)
return
}
fmt.Printf("public key: %s\n", publicKey.Hex())
fmt.Printf("private key: %s\n", hexutil.BytesToHex(crypto.FromECDSA(privateKey)))
},
}
shard = generateKeyPairCmd.Flags().UintP("shard", "", 0, "shard number")
return generateKeyPairCmd
}
// GenerateKey generate key by shard
func GenerateKey(shard uint) (*common.Address, *ecdsa.PrivateKey, error) {
var publicKey *common.Address
var privateKey *ecdsa.PrivateKey
var err error
if shard > common.ShardCount {
return nil, nil, fmt.Errorf("not supported shard number, shard number should be [0, %d]", common.ShardCount)
} else if shard == 0 {
publicKey, privateKey, err = crypto.GenerateKeyPair()
if err != nil {
return nil, nil, fmt.Errorf("failed to generate the key pair: %s", err)
}
} else {
publicKey, privateKey = crypto.MustGenerateShardKeyPair(shard)
}
return publicKey, privateKey, nil
}