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authorBen McGinnes <[email protected]>2018-03-29 23:38:31 +0000
committerBen McGinnes <[email protected]>2018-03-29 23:38:31 +0000
commitfed024eff1091056647296ac589a0c88c2be41bb (patch)
tree92107918246e3e9f9660ee06d9668868fed473ca /lang/python/docs/GPGMEpythonHOWTOen.org
parentMerge branch 'master' of ssh+git://playfair.gnupg.org/git/gpgme (diff)
parentjson: Build only a dummy if libgpg-error is < 1.28 (diff)
downloadgpgme-fed024eff1091056647296ac589a0c88c2be41bb.tar.gz
gpgme-fed024eff1091056647296ac589a0c88c2be41bb.zip
Merge branch 'master' of ssh+git://playfair.gnupg.org/git/gpgme
* Also fixed a small grammatical error highlighted by a merge conflict (in the python bindings howto).
Diffstat (limited to 'lang/python/docs/GPGMEpythonHOWTOen.org')
-rw-r--r--lang/python/docs/GPGMEpythonHOWTOen.org140
1 files changed, 88 insertions, 52 deletions
diff --git a/lang/python/docs/GPGMEpythonHOWTOen.org b/lang/python/docs/GPGMEpythonHOWTOen.org
index 219f602d..cb85b61b 100644
--- a/lang/python/docs/GPGMEpythonHOWTOen.org
+++ b/lang/python/docs/GPGMEpythonHOWTOen.org
@@ -6,6 +6,7 @@
#+LATEX_HEADER: \usepackage[margin=1in]{geometry}
#+LATEX_HEADER: \setmainfont[Ligatures={Common}]{Times New Roman}
#+LATEX_HEADER: \author{Ben McGinnes <[email protected]>}
+#+HTML_HEAD_EXTRA: <link type="application/rss+xml" href="https://git.gnupg.org/cgi-bin/gitweb.cgi?p=gpgme.git;a=rss;f=lang/python/docs/GPGMEpythonHOWTOen.org"/>
* Introduction
@@ -164,7 +165,7 @@
This package is the origin of these bindings, though they are
somewhat different now. For details of when and how the PyME
package was folded back into GPGME itself see the /Short History/
- document[fn:1] in this Python bindings =docs= directory.[fn:2]
+ document[fn:1] in the Python bindings =docs= directory.[fn:2]
The PyME package was first released in 2002 and was also the first
attempt to implement a low level binding to GPGME. In doing so it
@@ -536,8 +537,7 @@
c = gpg.Context(armor=True)
rkey = list(c.keylist(pattern=a_key, secret=False))
ciphertext, result, sign_result = c.encrypt(text, recipients=rkey,
- sign=True, always_trust=True,
- add_encrypt_to=True)
+ sign=True, always_trust=True, add_encrypt_to=True)
with open("secret_plans.txt.asc", "wb") as afile:
afile.write(ciphertext)
@@ -588,10 +588,10 @@
logrus.append(rpattern[i])
ciphertext, result, sign_result = c.encrypt(text, recipients=logrus, sign=False,
- always_trust=True)
+ always_trust=True)
with open("secret_plans.txt.asc", "wb") as afile:
- afile.write(ciphertext)
+ afile.write(ciphertext)
#+end_src
All it would take to change the above example to sign the message
@@ -600,7 +600,7 @@
#+begin_src python
ciphertext, result, sign_result = c.encrypt(text, recipients=logrus,
- always_trust=True,
+ always_trust=True,
add_encrypt_to=True)
#+end_src
@@ -618,7 +618,7 @@
import gpg
with open("secret_plans.txt.asc", "rb") as afile:
- text = afile.read()
+ text = afile.read()
c = gpg.Context(armor=True)
rpattern = list(c.keylist(pattern="@gnupg.org", secret=False))
@@ -629,21 +629,23 @@
logrus.append(rpattern[i])
try:
- ciphertext, result, sign_result = c.encrypt(text, recipients=logrus, add_encrypt_to=True)
+ ciphertext, result, sign_result = c.encrypt(text, recipients=logrus,
+ add_encrypt_to=True)
except gpg.errors.InvalidRecipients as e:
for i in range(len(e.recipients)):
for n in range(len(logrus)):
if logrus[n].fpr == e.recipients[i].fpr:
logrus.remove(logrus[n])
- else:
- pass
+ else:
+ pass
try:
- ciphertext, result, sign_result = c.encrypt(text, recipients=logrus, add_encrypt_to=True)
+ ciphertext, result, sign_result = c.encrypt(text, recipients=logrus,
+ add_encrypt_to=True)
except:
pass
with open("secret_plans.txt.asc", "wb") as afile:
- afile.write(ciphertext)
+ afile.write(ciphertext)
#+end_src
This will attempt to encrypt to all the keys searched for, then
@@ -669,16 +671,18 @@
ciphertext = input("Enter path and filename of encrypted file: ")
newfile = input("Enter path and filename of file to save decrypted data to: ")
+
with open(ciphertext, "rb") as cfile:
- plaintext, result, verify_result = gpg.Context().decrypt(cfile)
+ plaintext, result, verify_result = gpg.Context().decrypt(cfile)
+
with open(newfile, "wb") as nfile:
- nfile.write(plaintext)
+ nfile.write(plaintext)
#+end_src
- The data available in plaintext in this example is the decrypted
- content as a byte object in =plaintext[0]=, the recipient key IDs
- and algorithms in =plaintext[1]= and the results of verifying any
- signatures of the data in =plaintext[0]=.
+ The data available in =plaintext= in this example is the decrypted
+ content as a byte object, the recipient key IDs and algorithms in
+ =result= and the results of verifying any signatures of the data in
+ =verify_result=.
** Signing text and files
@@ -1078,8 +1082,8 @@
c.home_dir = "~/.gnupg-dm"
userid = "Danger Mouse <[email protected]>"
- dmkey = c.create_key(userid, algorithm = "rsa3072", expires_in = 31536000,
- sign = True, certify = True)
+ dmkey = c.create_key(userid, algorithm="rsa3072", expires_in=31536000,
+ sign=True, certify=True)
#+end_src
One thing to note here is the use of setting the =c.home_dir=
@@ -1091,6 +1095,10 @@
permissions set to only permit access by the directory owner. On
posix systems this means setting the directory permissions to 700.
+ The =temp-homedir-config.py= script in the HOWTO examples directory
+ will create an alternative homedir with these configuration options
+ already set and the correct directory and file permissions.
+
The successful generation of the key can be confirmed via the
returned =GenkeyResult= object, which includes the following data:
@@ -1167,9 +1175,9 @@
c = gpg.Context()
c.home_dir = "~/.gnupg-dm"
- key = c.get_key(dmkey.fpr, secret = True)
- dmsub = c.create_subkey(key, algorithm = "rsa3072", expires_in = 15768000,
- encrypt = True)
+ key = c.get_key(dmkey.fpr, secret=True)
+ dmsub = c.create_subkey(key, algorithm="rsa3072", expires_in=15768000,
+ encrypt=True)
#+end_src
As with the primary key, the results here can be checked with:
@@ -1206,38 +1214,66 @@
:CUSTOM_ID: keygen-uids
:END:
- By comparison to creating primary keys and subkeys, adding a new
- user ID to an existing key is much simpler. The method used to do
- this is =key_add_uid= and the only arguments it takes are for the
- =key= and the new =uid=.
- #+begin_src python
- import gpg
+*** Adding User IDs
+ :PROPERTIES:
+ :CUSTOM_ID: keygen-uids-add
+ :END:
- c = gpg.Context()
- c.home_dir = "~/.gnupg-dm"
+ By comparison to creating primary keys and subkeys, adding a new
+ user ID to an existing key is much simpler. The method used to do
+ this is =key_add_uid= and the only arguments it takes are for the
+ =key= and the new =uid=.
- dmfpr = "177B7C25DB99745EE2EE13ED026D2F19E99E63AA"
- key = c.get_key(dmfpr, secret = True)
- uid = "Danger Mouse <[email protected]>"
+ #+begin_src python
+ import gpg
- c.key_add_uid(key, uid)
- #+end_src
+ c = gpg.Context()
+ c.home_dir = "~/.gnupg-dm"
- Unsurprisingly the result of this is:
+ dmfpr = "177B7C25DB99745EE2EE13ED026D2F19E99E63AA"
+ key = c.get_key(dmfpr, secret=True)
+ uid = "Danger Mouse <[email protected]>"
- #+begin_src shell
- bash-4.4$ gpg --homedir ~/.gnupg-dm -K
- ~/.gnupg-dm/pubring.kbx
- ----------------------
- sec rsa3072 2018-03-15 [SC] [expires: 2019-03-15]
- 177B7C25DB99745EE2EE13ED026D2F19E99E63AA
- uid [ultimate] Danger Mouse <[email protected]>
- uid [ultimate] Danger Mouse <[email protected]>
- ssb rsa3072 2018-03-15 [E] [expires: 2018-09-13]
+ c.key_add_uid(key, uid)
+ #+end_src
- bash-4.4$
- #+end_src
+ Unsurprisingly the result of this is:
+
+ #+begin_src shell
+ bash-4.4$ gpg --homedir ~/.gnupg-dm -K
+ ~/.gnupg-dm/pubring.kbx
+ ----------------------
+ sec rsa3072 2018-03-15 [SC] [expires: 2019-03-15]
+ 177B7C25DB99745EE2EE13ED026D2F19E99E63AA
+ uid [ultimate] Danger Mouse <[email protected]>
+ uid [ultimate] Danger Mouse <[email protected]>
+ ssb rsa3072 2018-03-15 [E] [expires: 2018-09-13]
+
+ bash-4.4$
+ #+end_src
+
+
+*** Revokinging User IDs
+ :PROPERTIES:
+ :CUSTOM_ID: keygen-uids-revoke
+ :END:
+
+ Revoking a user ID is a fairly similar process, except that it
+ uses the =key_revoke_uid= method.
+
+ #+begin_src python
+ import gpg
+
+ c = gpg.Context()
+ c.home_dir = "~/.gnupg-dm"
+
+ dmfpr = "177B7C25DB99745EE2EE13ED026D2F19E99E63AA"
+ key = c.get_key(dmfpr, secret=True)
+ uid = "Danger Mouse <[email protected]>"
+
+ c.key_revoke_uid(key, uid)
+ #+end_src
** Key certification
@@ -1251,8 +1287,8 @@
The =key_sign= method takes four arguments: =key=, =uids=,
=expires_in= and =local=. The default value of =uids= is =None=
and which results in all user IDs being selected. The default
- values of =expires_in= and =local= is =False=; which results in the
- signature never expiring and being able to be exported.
+ value of both =expires_in= and =local= is =False=; which results in
+ the signature never expiring and being able to be exported.
The =key= is the key being signed rather than the key doing the
signing. To change the key doing the signing refer to the signing
@@ -1273,8 +1309,8 @@
uid = "Danger Mouse <[email protected]>"
dmfpr = "177B7C25DB99745EE2EE13ED026D2F19E99E63AA"
- key = c.get_key(dmfpr, secret = True)
- c.key_sign(key, uids = uid, expires_in = 2764800)
+ key = c.get_key(dmfpr, secret=True)
+ c.key_sign(key, uids=uid, expires_in=2764800)
#+end_src