PGP非対応のメールソフトでの利用

公開キーを添付する
相手の公開キーをPGPに追加て、暗号文を解読できるようにする
相手に暗証化したメールを送る
届いた暗号メールを解読する

公開キーを添付する

This is test mail.

\pgp\temp\public.txt

cd c:\pgp PGP -kxa


Pretty Good Privacy(tm) 2.6.3ia - Public-key encryption for the masses.
(c) 1990-96 Philip Zimmermann, Phil's Pretty Good Software. 1996-03-04
International version - not for use in the USA. Does not use RSAREF.
Current time: 1997/06/19 21:40 GMT

A user ID is required to select the key you want to extract.
Enter the key's user ID:

<my_name@xyz.or.jp>

Extracting from key ring: 'C:\pgp\pubring.pgp', userid "<my_name@xyz.or.jp>".

Key for user ID: <my_name@xyz.or.jp>
512-bit key, key ID 24A179A5, created 1997/06/19

Extract the above key into which file?

temp\public
Transport armor file: temp\public.asc
Key extracted to file 'temp\public.asc'.
C:\pgp>

public.asc

先頭に貼り付けして、相手に送ってください。

貼り付け後のメールサンプル
－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－

Type Bits/KeyID    Date       User ID
pub   512/24A179A5 1997/06/19 <my_name@xyz.or.jp>

-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: 2.6.3ia

mQBNA*****************************Wg9diw175Vy
Bf+zpTI******************************mdaS5v
ci5qcD6*****************************YNA/iYSwN
+DjKVo*****************************VtR6+8
=rixx
-----END PGP PUBLIC KEY BLOCK-----


こんにちは。
業務上の話は上の公開鍵をご使用ください。

相手の公開キーをPGPに追加て、暗号文を解読できるようにする

相手の公開キーを含んだメールをメモ帳などで切り取り、適当なファイル名をつけます。

\pgp\temp\yourmail.txt

pgp -ka temp\yourmail.txt

Pretty Good Privacy(tm) 2.6.3ia - Public-key encryption for the masses.
(c) 1990-96 Philip Zimmermann, Phil's Pretty Good Software. 1996-03-04
International version - not for use in the USA. Does not use RSAREF.
Current time: 1997/06/21 07:44 GMT

File contains key(s).  Contents follow...
Key ring: 'pt.$00'
Type Bits/KeyID    Date       User ID
pub   512/5AC0ACB9 1997/03/26  <you_mail@abc.or.jp>
sig       5AC0ACB9              <you_mail@abc.or.jp>
1 matching key found.

Do you want to add this keyfile to keyring 'd:\PGP\pubring.pgp' (y/N)?

Looking for new keys...
pub   512/5AC0ACB9 1997/03/26   <you_mail@abc.or.jp>

Checking signatures...
pub   512/5AC0ACB9 1997/03/26  <you_mail@abc.or.jp>
sig!      5AC0ACB9 1997/03/26   <you_mail@abc.or.jp>


Keyfile contains:
   1 new key(s)

One or more of the new keys are not fully certified.
Do you want to certify any of these keys yourself (y/N)?



Key for user ID:  <you_mail@abc.or.jp>
512-bit key, key ID 5AC0ACB9, created 1997/03/26
Key fingerprint = 2E AA D8 8A A9 E9 C7 3A  EF AB 25 01 00 50 C7 70
This key/userID association is not certified.
  Questionable certification from:
   <you_mail@abc.or.jp>

Do you want to certify this key yourself (y/N)?

y　　を入力してください。

Looking for key for user ' <you_mail@abc.or.jp>':

Key for user ID:  <you_mail@abc.or.jp>
512-bit key, key ID 5AC0ACB9, created 1997/03/26
            Key fingerprint = 2E AA D8 8A A9 E9 C7 3A  EF AB 25 01 00 50 C7 70


READ CAREFULLY:  Based on your own direct first-hand knowledge, are
you absolutely certain that you are prepared to solemnly certify that
the above public key actually belongs to the user specified by the
above user ID (y/N)?

y　　を入力してください。


You need a pass phrase to unlock your RSA secret key.
Key for user ID: <my_name@xyz.or.jp>
512-bit key, key ID 24A179A5, created 1997/06/19

Enter pass phrase:

あなたのパスワードを入力してください。



Enter pass phrase: Pass phrase is good.  Just a moment....
Key signature certificate added.

Make a determination in your own mind whether this key actually
belongs to the person whom you think it belongs to, based on available
evidence.  If you think it does, then based on your estimate of
that person's integrity and competence in key management, answer
the following question:

Would you trust " <you_mail@abc.or.jp>"
to act as an introducer and certify other people's public keys to you?
(1=I don't know. 2=No. 3=Usually. 4=Yes, always.) ?

4　　を入力してください。

これであなたのPGPに公開キーが取り込まれました。

あなたの書いたメールを暗号化して相手に送る

\pgp\temp\sendmail.txt

pgp -esa temp\sendmail.txt

Pretty Good Privacy(tm) 2.6.3ia - Public-key encryption for the masses.
(c) 1990-96 Philip Zimmermann, Phil's Pretty Good Software. 1996-03-04
International version - not for use in the USA. Does not use RSAREF.
Current time: 1997/06/20 21:45 GMT

A secret key is required to make a signature.
You specified no user ID to select your secret key,
so the default user ID and key will be the most recently
added key on your secret keyring.

You need a pass phrase to unlock your RSA secret key.
Key for user ID: <my_name@xyz.or.jp>
512-bit key, key ID 24A179A5, created 1997/06/19

Enter pass phrase:

あなたのパスワード

Enter pass phrase: Pass phrase is good. Just a moment.... Recipients' public key(s) will be used to encrypt. A user ID is required to select the recipient's public key. Enter the recipient's user ID:

<my_name@xyz.or.jp>

512-bit key, key ID 24A179A5, created 1997/06/19 . Transport armor file: temp\sendmail.asc C:\pgp>

temp\sendmail.asc

ご使用のメールソフトに貼り付れば

届いた暗号メールを解読する

届いた暗号メールをメモ帳などへコピーし、適当な場所に適当な名前で保存します。必ず拡張子は .asc としてください。

\temp\res_mail.asc

pgp temp\res_mail

Pretty Good Privacy(tm) 2.6.3ia - Public-key encryption for the masses.
(c) 1990-96 Philip Zimmermann, Phil's Pretty Good Software. 1996-03-04
International version - not for use in the USA. Does not use RSAREF.
Current time: 1997/06/20 22:04 GMT

File is encrypted.  Secret key is required to read it.
Key for user ID: <my_name@xyz.or.jp>
512-bit key, key ID 24A179A5, created 1997/06/19

You need a pass phrase to unlock your RSA secret key.
Enter pass phrase:


あなたのパスワードを入力してください。入力中の文字は見えません。

Enter pass phrase: Pass phrase is good.  Just a moment......
File has signature.  Public key is required to check signature.
.
Good signature from user "<my_name@xyz.or.jp>".
Signature made 1997/06/20 21:47 GMT using 512-bit key, key ID 24A179A5

Plaintext filename: temp\res_mail

C:\pgp>

temp\res_mail

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