piping data stream through GPG

[robert]

I played around trying to encrypt/decrypt data through GPG on the
fly (or worse - by using a file) (on Windows first - later to try
on Linux too)

Using os.popen3 like

>>i,o,e=os.pope n3('gpg -e -r Robert')
>># i.write('y\n')
>>i.write('wefw ef')
>>i.close()
>># e.read(1)
>>o.read(1)

hangs on o.read or e.read.

So its quite dark. Just a totally non-existing userid (-r) will
result significantly different like

>>i.write('wefw ef')

Traceback (most recent call last):
File "<interacti ve input>", line 1, in ?
IOError: [Errno 22] Invalid argument


GPG asks confirmation stuff (and pwd upon -d or -c) on the command
line.
How to get all this the right way?


Robert

[robert]

Re: piping data stream through GPG

robert wrote:

I played around trying to encrypt/decrypt data through GPG on the fly
(or worse - by using a file) (on Windows first - later to try on Linux too)
>
Using os.popen3 like
>

>>i,o,e=os.pope n3('gpg -e -r Robert')
>># i.write('y\n')
>>i.write('wefw ef')
>>i.close()
>># e.read(1)
>>o.read(1)

>
hangs on o.read or e.read.
>
So its quite dark. Just a totally non-existing userid (-r) will result
significantly different like
>

>>i.write('wefw ef')

Traceback (most recent call last):
File "<interacti ve input>", line 1, in ?
IOError: [Errno 22] Invalid argument
>
>
GPG asks confirmation stuff (and pwd upon -d or -c) on the command line.
How to get all this the right way?
>
>

now tryed around like

>>i,o,e=os.pope n3('gpg --status-fd 2 --passphrase-fd 0 -e -r

Robert','b')

>>i.write('y\r' )
>>i.write('wefw ef')
>>i.close()
>># e.read(1)
>>o.read(1)

still just hanging... never any output (status or honey)

Robert

[robert]

Re: piping data stream through GPG

robert wrote:

I played around trying to encrypt/decrypt data through GPG on the fly
(or worse - by using a file) (on Windows first - later to try on Linux too)
>
Using os.popen3 like
>

>>i,o,e=os.pope n3('gpg -e -r Robert')
>># i.write('y\n')
>>i.write('wefw ef')
>>i.close()
>># e.read(1)
>>o.read(1)

>
hangs on o.read or e.read.
>
So its quite dark. Just a totally non-existing userid (-r) will result
significantly different like
>

>>i.write('wefw ef')

Traceback (most recent call last):
File "<interacti ve input>", line 1, in ?
IOError: [Errno 22] Invalid argument
>
>
GPG asks confirmation stuff (and pwd upon -d or -c) on the command line.
How to get all this the right way?
>
>

I basically can handle it now by a os.popen3 cmd like
'gpg -e -r Robert --batch --always-trust',
'gpg -d -r Robert --batch --always-trust --passphrase-fd 0'

and by using a thread for feeding the child_stdin stream
(necessary for files of significant length / more than buffers)


Robert