Chap 13 gnupg
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Chap 13 GnuPG 安全性保護 PowerPoint PPT Presentation


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Chap 13 GnuPG 安全性保護. 13-1 加密與 GnuPG 13-2 建立金鑰組與廢止憑證 13-3 匯出公開金鑰 13-4 用戶端匯入 Public Key 13-5 文件加密與數位簽章. 13-1 加密與 GnuPG. 專有名詞. 明文:傳送端和接收端所需的實際資料。 密文:明文經過加密機制運算後所產生的資料,這些資料也就是傳遞過程的資料型態。 加密金鑰:明文需使用加密金鑰,以將資料轉變成密文。 解密金鑰:密文需使用解密金鑰,以將資料還原成明文。. 加密運算. 0 XOR 0 = 0

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Chap 13 GnuPG 安全性保護

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Chap 13 gnupg

Chap 13 GnuPG

  • 13-1 GnuPG

  • 13-2

  • 13-3

  • 13-4 Public Key

  • 13-5


13 1 gnupg

13-1 GnuPG


Chap 13 gnupg


Chap 13 gnupg

  • 0 XOR 0 = 0

  • 0 XOR 1 = 1

  • 1 XOR 0 = 1

  • 1 XOR 1 = 0


Chap 13 gnupg


Chap 13 gnupg


Chap 13 gnupg


Chap 13 gnupg

  • Hash FunctionDigest

  • Private Key


Chap 13 gnupg

  • Hash Function

  • Public Key


Chap 13 gnupg


Chap 13 gnupg

13-2


Chap 13 gnupg

  • gpg --gen-key

  • Keyring~/.gnupg

  • ELG-E


Chap 13 gnupg

  • O

  • ~/.gnupg


Chap 13 gnupg

  • gpg

  • ~/revoke.asc


Chap 13 gnupg

13-3


Public key

Public Key

gpg

gpg --armor export ID > mykey.asc


Public key1

Public Key


1 mit pgp key server

1. MIT PGP Key Server


2 public key

2.Public Key


3 public key

3. Public Key


14 4 public key

14-4 Public Key


Public key2

Public Key


1 public key id

1.Public Key ID


2 public key1

2. Public Key


Chap 13 gnupg

3.


Chap 13 gnupg

  • Public KeyPublic KeyKeyring--import

  • Public KeyPublic Key


Chap 13 gnupg

gpg `/home/may/.gnupg'

gpg `/home/may/.gnupg/gpg.conf'

gpg `/home/may/.gnupg/gpg.conf

gpg `/home/may/.gnupg/secring.gpg'

gpg `/home/may/.gnupg/pubring.gpg'

gpg /home/may/.gnupg/trustdb.gpg

gpg 46FE0B1D "Jack Li (System Security Officer) <[email protected]>"

gpg 1

gpg 1


Chap 13 gnupg

13-5


Chap 13 gnupg

  • Public Key

  • Public Key

  • doc.txtdoc.gpg

  • may


Chap 13 gnupg

  • Jackcatalog.txt [[email protected] ~]$ gpg --output catalog.sig --sign catalog.txt

  • MayJack


  • Login