github.com/yinchengtsinghua/golang-Eos-dpos-Ethereum@v0.0.0-20190121132951-92cc4225ed8e/cmd/ethkey/inspect.go (about)

     1  
     2  //此源码被清华学神尹成大魔王专业翻译分析并修改
     3  //尹成QQ77025077
     4  //尹成微信18510341407
     5  //尹成所在QQ群721929980
     6  //尹成邮箱 yinc13@mails.tsinghua.edu.cn
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     8  //https://mvp.microsoft.com/zh-cn/PublicProfile/4033620
     9  //版权所有2017 Go Ethereum作者
    10  //此文件是Go以太坊的一部分。
    11  //
    12  //Go以太坊是免费软件:您可以重新发布和/或修改它
    13  //根据GNU通用公共许可证的条款
    14  //自由软件基金会,或者许可证的第3版,或者
    15  //(由您选择)任何更高版本。
    16  //
    17  //Go以太坊的分布希望它会有用,
    18  //但没有任何保证;甚至没有
    19  //适销性或特定用途的适用性。见
    20  //GNU通用公共许可证了解更多详细信息。
    21  //
    22  //你应该已经收到一份GNU通用公共许可证的副本
    23  //一起去以太坊吧。如果没有,请参见<http://www.gnu.org/licenses/>。
    24  
    25  package main
    26  
    27  import (
    28  	"encoding/hex"
    29  	"fmt"
    30  	"io/ioutil"
    31  
    32  	"github.com/ethereum/go-ethereum/accounts/keystore"
    33  	"github.com/ethereum/go-ethereum/cmd/utils"
    34  	"github.com/ethereum/go-ethereum/crypto"
    35  	"gopkg.in/urfave/cli.v1"
    36  )
    37  
    38  type outputInspect struct {
    39  	Address    string
    40  	PublicKey  string
    41  	PrivateKey string
    42  }
    43  
    44  var commandInspect = cli.Command{
    45  	Name:      "inspect",
    46  	Usage:     "inspect a keyfile",
    47  	ArgsUsage: "<keyfile>",
    48  	Description: `
    49  Print various information about the keyfile.
    50  
    51  Private key information can be printed by using the --private flag;
    52  make sure to use this feature with great caution!`,
    53  	Flags: []cli.Flag{
    54  		passphraseFlag,
    55  		jsonFlag,
    56  		cli.BoolFlag{
    57  			Name:  "private",
    58  			Usage: "include the private key in the output",
    59  		},
    60  	},
    61  	Action: func(ctx *cli.Context) error {
    62  		keyfilepath := ctx.Args().First()
    63  
    64  //从文件中读取密钥。
    65  		keyjson, err := ioutil.ReadFile(keyfilepath)
    66  		if err != nil {
    67  			utils.Fatalf("Failed to read the keyfile at '%s': %v", keyfilepath, err)
    68  		}
    69  
    70  //用密码短语解密密钥。
    71  		passphrase := getPassphrase(ctx)
    72  		key, err := keystore.DecryptKey(keyjson, passphrase)
    73  		if err != nil {
    74  			utils.Fatalf("Error decrypting key: %v", err)
    75  		}
    76  
    77  //输出我们能检索到的所有相关信息。
    78  		showPrivate := ctx.Bool("private")
    79  		out := outputInspect{
    80  			Address: key.Address.Hex(),
    81  			PublicKey: hex.EncodeToString(
    82  				crypto.FromECDSAPub(&key.PrivateKey.PublicKey)),
    83  		}
    84  		if showPrivate {
    85  			out.PrivateKey = hex.EncodeToString(crypto.FromECDSA(key.PrivateKey))
    86  		}
    87  
    88  		if ctx.Bool(jsonFlag.Name) {
    89  			mustPrintJSON(out)
    90  		} else {
    91  			fmt.Println("Address:       ", out.Address)
    92  			fmt.Println("Public key:    ", out.PublicKey)
    93  			if showPrivate {
    94  				fmt.Println("Private key:   ", out.PrivateKey)
    95  			}
    96  		}
    97  		return nil
    98  	},
    99  }