Chap 13 gnupg
Sponsored Links
This presentation is the property of its rightful owner.
1 / 30

Chap 13 GnuPG 安全性保護 PowerPoint PPT Presentation


  • 60 Views
  • Uploaded on
  • Presentation posted in: General

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

Download Presentation

Chap 13 GnuPG 安全性保護

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Chap 13 GnuPG

  • 13-1 GnuPG

  • 13-2

  • 13-3

  • 13-4 Public Key

  • 13-5


13-1 GnuPG



  • 0 XOR 0 = 0

  • 0 XOR 1 = 1

  • 1 XOR 0 = 1

  • 1 XOR 1 = 0





  • Hash FunctionDigest

  • Private Key


  • Hash Function

  • Public Key



13-2


  • gpg --gen-key

  • Keyring~/.gnupg

  • ELG-E


  • O

  • ~/.gnupg


  • gpg

  • ~/revoke.asc


13-3


Public Key

gpg

gpg --armor export ID > mykey.asc


Public Key


1. MIT PGP Key Server


2.Public Key


3. Public Key


14-4 Public Key


Public Key


1.Public Key ID


2. Public Key


3.


  • Public KeyPublic KeyKeyring--import

  • Public KeyPublic Key


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) <jack@f8linux.com>"

gpg 1

gpg 1


13-5


  • Public Key

  • Public Key

  • doc.txtdoc.gpg

  • may


  • Jackcatalog.txt [jack@ns1 ~]$ gpg --output catalog.sig --sign catalog.txt

  • MayJack


  • Login