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Groups > linux.debian.user > #226371 > unrolled thread
| Started by | local10 <local10@tutanota.com> |
|---|---|
| First post | 2020-08-21 19:50 +0200 |
| Last post | 2020-08-26 11:30 +0200 |
| Articles | 20 on this page of 42 — 21 participants |
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Encrypt files on Linux, decrypt on Windows local10 <local10@tutanota.com> - 2020-08-21 19:50 +0200
Re: Encrypt files on Linux, decrypt on Windows john doe <johndoe65534@mail.com> - 2020-08-21 20:20 +0200
Re: Encrypt files on Linux, decrypt on Windows Linux-Fan <Ma_Sys.ma@web.de> - 2020-08-21 20:30 +0200
Re: Encrypt files on Linux, decrypt on Windows David Christensen <dpchrist@holgerdanske.com> - 2020-08-21 21:20 +0200
Re: Encrypt files on Linux, decrypt on Windows john doe <johndoe65534@mail.com> - 2020-08-21 21:20 +0200
Re: Encrypt files on Linux, decrypt on Windows Linux-Fan <Ma_Sys.ma@web.de> - 2020-08-21 22:00 +0200
Re: Encrypt files on Linux, decrypt on Windows Teemu Likonen <tlikonen@iki.fi> - 2020-08-21 22:40 +0200
[OT] Linux-Fan's bad signatures (Re: Encrypt files on Linux, decrypt on Windows) Linux-Fan <Ma_Sys.ma@web.de> - 2020-08-22 00:20 +0200
Re: Linux-Fan's bad signatures Teemu Likonen <tlikonen@iki.fi> - 2020-08-22 09:20 +0200
Re: Linux-Fan's bad signatures Linux-Fan <Ma_Sys.ma@web.de> - 2020-08-22 12:50 +0200
Signing emails, was Re: General-Purpose Server for Debian Stable David Wright <deblis@lionunicorn.co.uk> - 2020-10-02 05:30 +0200
Re: Encrypt files on Linux, decrypt on Windows Paul Johnson <baloo@ursamundi.org> - 2020-08-21 20:40 +0200
Re: Encrypt files on Linux, decrypt on Windows Charles Curley <charlescurley@charlescurley.com> - 2020-08-21 21:10 +0200
Re: Encrypt files on Linux, decrypt on Windows Marek Mosiewicz <marek.mosiewicz@jotel.com.pl> - 2020-08-23 11:30 +0200
Re: Encrypt files on Linux, decrypt on Windows <tomas@tuxteam.de> - 2020-08-23 11:40 +0200
Re: Encrypt files on Linux, decrypt on Windows Andrei POPESCU <andreimpopescu@gmail.com> - 2020-08-23 13:10 +0200
Re: Encrypt files on Linux, decrypt on Windows Charles Curley <charlescurley@charlescurley.com> - 2020-08-23 16:40 +0200
Signal [Was:] Re: Encrypt files on Linux, decrypt on Windows Celejar <celejar@gmail.com> - 2020-08-25 20:20 +0200
Re: Signal [Was:] Re: Encrypt files on Linux, decrypt on Windows Andrei POPESCU <andreimpopescu@gmail.com> - 2020-08-26 08:30 +0200
Re: Signal [Was:] Re: Encrypt files on Linux, decrypt on Windows Celejar <celejar@gmail.com> - 2020-08-26 14:10 +0200
Re: Encrypt files on Linux, decrypt on Windows Matthew Graybosch <hello@matthewgraybosch.com> - 2020-08-21 20:50 +0200
Re: Encrypt files on Linux, decrypt on Windows <tomas@tuxteam.de> - 2020-08-21 22:00 +0200
Re: Encrypt files on Linux, decrypt on Windows Matthew Graybosch <hello@matthewgraybosch.com> - 2020-08-21 22:20 +0200
Re: Encrypt files on Linux, decrypt on Windows rhkramer@gmail.com - 2020-08-22 02:20 +0200
Re: Encrypt files on Linux, decrypt on Windows Matthew Graybosch <hello@matthewgraybosch.com> - 2020-08-22 03:30 +0200
Re: Encrypt files on Linux, decrypt on Windows <tomas@tuxteam.de> - 2020-08-22 09:40 +0200
Re: Encrypt files on Linux, decrypt on Windows Matthew Graybosch <hello@matthewgraybosch.com> - 2020-08-23 19:10 +0200
Re: Encrypt files on Linux, decrypt on Windows Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-26 11:40 +0200
Re: Encrypt files on Linux, decrypt on Windows Hornet <hornetmadness@gmail.com> - 2020-08-29 15:40 +0200
Re: Encrypt files on Linux, decrypt on Windows Teemu Likonen <tlikonen@iki.fi> - 2020-08-21 21:10 +0200
Re: Encrypt files on Linux, decrypt on Windows Teemu Likonen <tlikonen@iki.fi> - 2020-08-21 21:20 +0200
Re: Encrypt files on Linux, decrypt on Windows David Christensen <dpchrist@holgerdanske.com> - 2020-08-21 21:30 +0200
Re: Encrypt files on Linux, decrypt on Windows David Christensen <dpchrist@holgerdanske.com> - 2020-08-21 21:20 +0200
Re: Encrypt files on Linux, decrypt on Windows Hans <hans.ullrich@loop.de> - 2020-08-21 22:30 +0200
Re: Encrypt files on Linux, decrypt on Windows Hans <hans.ullrich@loop.de> - 2020-08-21 22:40 +0200
Re: Encrypt files on Linux, decrypt on Windows Andrew McGlashan <andrew.mcglashan@affinityvision.com.au> - 2020-08-22 03:10 +0200
Re: Encrypt files on Linux, decrypt on Windows deloptes <deloptes@gmail.com> - 2020-08-22 09:50 +0200
Re: Encrypt files on Linux, decrypt on Windows mick crane <mick.crane@gmail.com> - 2020-08-22 12:20 +0200
"What's wrong with...?" Teemu Likonen <tlikonen@iki.fi> - 2020-08-22 20:30 +0200
Re: "What's wrong with...?" Dan Ritter <dsr@randomstring.org> - 2020-08-22 20:40 +0200
Re: "What's wrong with...?" mick crane <mick.crane@gmail.com> - 2020-08-23 08:50 +0200
Re: "What's wrong with...?" Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-26 11:30 +0200
Page 1 of 3 [1] 2 3 Next page →
| From | local10 <local10@tutanota.com> |
|---|---|
| Date | 2020-08-21 19:50 +0200 |
| Subject | Encrypt files on Linux, decrypt on Windows |
| Message-ID | <AGjkR-7v0-7@gated-at.bofh.it> |
Hi, What would be a reasonably secure and simple way to encrypt files on Linux and then send them to a non-technical Windows user so she would be able decrypt and read them? Any ideas? Thanks
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| From | john doe <johndoe65534@mail.com> |
|---|---|
| Date | 2020-08-21 20:20 +0200 |
| Message-ID | <AGjNT-7TZ-1@gated-at.bofh.it> |
| In reply to | #226371 |
On 8/21/2020 7:46 PM, local10 wrote: > Hi, > > What would be a reasonably secure and simple way to encrypt files on Linux and then send them to a non-technical Windows user so she would be able decrypt and read them? > > Any ideas? Thanks > Veracrypt could be one option. -- John Doe
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| From | Linux-Fan <Ma_Sys.ma@web.de> |
|---|---|
| Date | 2020-08-21 20:30 +0200 |
| Message-ID | <AGjXz-7X7-9@gated-at.bofh.it> |
| In reply to | #226371 |
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local10 writes: > Hi, > > What would be a reasonably secure and simple way to encrypt files on Linux > and then send them to a non-technical Windows user so she would be able > decrypt and read them? > > Any ideas? Thanks Consider 7-Zip from Debian package p7zip-full and available for Windows syswtems: https://www.7-zip.org/ Encrypt on Linux: $ 7z a -ptestwort -mhe=on secret.7z secret.txt Decrypt on Windows: Double-Click or use commandline: % 7z x -o. secret.7z Alternatively, you could also use aescrypt (https://www.aescrypt.com/). It is not in Debian but supports a variety of operating systems including Linux and Windows. GPG should also run on Windows, but is a little harder to use IMHO. HTH Linux-Fan
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| From | David Christensen <dpchrist@holgerdanske.com> |
|---|---|
| Date | 2020-08-21 21:20 +0200 |
| Message-ID | <AGkJX-8sz-5@gated-at.bofh.it> |
| In reply to | #226375 |
On 2020-08-21 11:24, Linux-Fan wrote: > local10 writes: > >> Hi, >> >> What would be a reasonably secure and simple way to encrypt files on >> Linux >> and then send them to a non-technical Windows user so she would be able >> decrypt and read them? >> >> Any ideas? Thanks > > Consider 7-Zip from Debian package p7zip-full and available for Windows > syswtems: https://www.7-zip.org/ > > Encrypt on Linux: > $ 7z a -ptestwort -mhe=on secret.7z secret.txt > > Decrypt on Windows: Double-Click or use commandline: > % 7z x -o. secret.7z So, the recipient must install 7-Zip on their Windows computer? David
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| From | john doe <johndoe65534@mail.com> |
|---|---|
| Date | 2020-08-21 21:20 +0200 |
| Message-ID | <AGkJX-8sz-9@gated-at.bofh.it> |
| In reply to | #226385 |
On 8/21/2020 9:11 PM, David Christensen wrote: > On 2020-08-21 11:24, Linux-Fan wrote: >> local10 writes: >> >>> Hi, >>> >>> What would be a reasonably secure and simple way to encrypt files on >>> Linux >>> and then send them to a non-technical Windows user so she would be able >>> decrypt and read them? >>> >>> Any ideas? Thanks >> >> Consider 7-Zip from Debian package p7zip-full and available for Windows >> syswtems: https://www.7-zip.org/ >> >> Encrypt on Linux: >> $ 7z a -ptestwort -mhe=on secret.7z secret.txt >> >> Decrypt on Windows: Double-Click or use commandline: >> % 7z x -o. secret.7z > > > So, the recipient must install 7-Zip on their Windows computer? > > > David > There is a portable version for Windows, if I recall correctly. To the OP, look at creating a self extracting archive (not sure if it works from Linux to Windows though). -- John Doe
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| From | Linux-Fan <Ma_Sys.ma@web.de> |
|---|---|
| Date | 2020-08-21 22:00 +0200 |
| Message-ID | <AGlmF-dM-5@gated-at.bofh.it> |
| In reply to | #226387 |
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john doe writes: > On 8/21/2020 9:11 PM, David Christensen wrote: >> On 2020-08-21 11:24, Linux-Fan wrote: [...] >>> Encrypt on Linux: >>> $ 7z a -ptestwort -mhe=on secret.7z secret.txt >>> >>> Decrypt on Windows: Double-Click or use commandline: >>> % 7z x -o. secret.7z >> >> >> So, the recipient must install 7-Zip on their Windows computer? In that example: Yes or use a 7z.exe obtained from the website without installation. [...] > To the OP, look at creating a self extracting archive (not sure if it > works from Linux to Windows though). It works from Linux to Windows, but it is trickier than I had imagined: On Linux: * Go to https://www.7-zip.org/download.html and download 64-bit x64 * Extract file 7z1900-x64.exe with 7z. $ mkdir sub $ 7z x -osub 7z1900-x64.exe * Copy 7z.sfx from the extracted installer $ cp sub/7z.sfx . * Create SFX archive for Windows $ 7z a -mhe=on -ptestwort -sfx7z.sfx mysfx.exe secret.txt * Send file `mysfx.exe` to the Windows user On Windows: * Run `mysfx.exe` -- it prompts for the password (`testwort`). I nowdays prefer the portable/installed version over SFX archives because uncommon executables are often rejected by antivirus software (especially .exe attachments to e-mails are prone to being deleted for security reasons...). Although most scanners seem to be fine with a generated SFX archive at the moment: https://www.virustotal.com/gui/file/e2dd36862c27e1551916ed3e773a55ecedf2b35e658522fa982369cc90eaf488/detection [...] HTH Linux-Fan
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| From | Teemu Likonen <tlikonen@iki.fi> |
|---|---|
| Date | 2020-08-21 22:40 +0200 |
| Message-ID | <AGlZp-FS-7@gated-at.bofh.it> |
| In reply to | #226375 |
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* 2020-08-21 20:24:29+02, Linux-Fan wrote: > GPG should also run on Windows, but is a little harder to use IMHO. GnuPG it is pretty hard everywhere. Your recent signatures are reported as "bad" (at least by Notmuch and Mutt). The signed data (message) doesn't match with the signature. About this thread's subject: If the original requirement for "reasonable security" means also data integrity (the content is untouched) or authentication (the sender is verified) then this all starts to point to digital signatures, thus OpenPGP (like GnuPG). -- /// Teemu Likonen - .-.. http://www.iki.fi/tlikonen/ // OpenPGP: 4E1055DC84E9DFF613D78557719D69D324539450
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| From | Linux-Fan <Ma_Sys.ma@web.de> |
|---|---|
| Date | 2020-08-22 00:20 +0200 |
| Subject | [OT] Linux-Fan's bad signatures (Re: Encrypt files on Linux, decrypt on Windows) |
| Message-ID | <AGny9-1G6-5@gated-at.bofh.it> |
| In reply to | #226394 |
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Teemu Likonen writes: > * 2020-08-21 20:24:29+02, Linux-Fan wrote: > > > GPG should also run on Windows, but is a little harder to use IMHO. > > GnuPG it is pretty hard everywhere. Your recent signatures are reported > as "bad" (at least by Notmuch and Mutt). The signed data (message) > doesn't match with the signature. [...] The copy I receive from the list does not verify correctly here, either. It seems somewhere along the path the e-mails content is actually mangled. -- some additional newlines are introduced compared to my local copy from the "Sent" folder which verifies correctly. Attached are `sent.txt` (and `sent.eml`) and `received.txt` -- the very same e-mail as seen in my Sent folder and Inbox respectively... Interestingly, if I split out the signatures and message contents, I get bad signature for both variatns despite the fact that the e-mail client can somehow verify the sent e-mail... ??? Linux-Fan
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| From | Teemu Likonen <tlikonen@iki.fi> |
|---|---|
| Date | 2020-08-22 09:20 +0200 |
| Subject | Re: Linux-Fan's bad signatures |
| Message-ID | <AGvYK-6O0-3@gated-at.bofh.it> |
| In reply to | #226396 |
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* 2020-08-22 00:17:19+02, Linux-Fan wrote:
> The copy I receive from the list does not verify correctly here,
> either.
The content between MIME separator lines are signed. The separators
itself are not part of the signature and also the last empty line is not
part of the signature.
--=_pte5-5038-1598034269-0003
--=_pte5-5038-1598034269-0003
In the example below the signed data begins with the "Content-Type" text
and ends with the "This is my message." plus one newline. The second
newline which creates the empty line at the end of the MIME part is not
part of the signature.
--=_pte5-5038-1598034269-0003
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
This is my message.
--=_pte5-5038-1598034269-0003
So if the signature is in "signature.asc" and the content between the
separator lines are in file "content.txt" this command should verify it:
gpg --verify signature.asc content.txt
It seems that the signatures are made with "gpg --textmode" so that it
doesn't matter if the content has LF or CR + LF newlines.
Your "sent" and "received" messages even have different MIME part
headers and encoding. At least those things change after the signature
is made. See the attached "diff -u" output. But I can't verify any of
your messages even if I manually edit the MIME parts and try different
things.
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| From | Linux-Fan <Ma_Sys.ma@web.de> |
|---|---|
| Date | 2020-08-22 12:50 +0200 |
| Subject | Re: Linux-Fan's bad signatures |
| Message-ID | <AGzfX-bj-1@gated-at.bofh.it> |
| In reply to | #226403 |
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Teemu Likonen writes: > * 2020-08-22 00:17:19+02, Linux-Fan wrote: > > > The copy I receive from the list does not verify correctly here, > > either. > > The content between MIME separator lines are signed. The separators > itself are not part of the signature and also the last empty line is not > part of the signature. [...] > So if the signature is in "signature.asc" and the content between the > separator lines are in file "content.txt" this command should verify it: > > gpg --verify signature.asc content.txt > > It seems that the signatures are made with "gpg --textmode" so that it > doesn't matter if the content has LF or CR + LF newlines. > > Your "sent" and "received" messages even have different MIME part > headers and encoding. At least those things change after the signature > is made. See the attached "diff -u" output. But I can't verify any of > your messages even if I manually edit the MIME parts and try different > things. Thank you for sharing this analysis. I was trying to figure it out but thought the signature was only over the text and not over the headers. I cannot get it to verify with manual editing, either. Yet somehow, my mail client's `mimegpg` command can do it, given the unmangled .eml file -- the one I had sent to the list also got changed during the transfer. Attached is a compressed version in the hope that it will come across without being changed. The file's sha256sum should be as follows: 04076b5cc68367f1bfda394ba32416891ffa1800b8f7214a04cb2fc4efa21004 sent.eml ac2a25bc54417db2b62d883b9ef31a93d25e9afc113cd9f9d555d87d2720baa8 sent.eml.xz The source code is available, I will just need to find some time to analyze what it does exactly. Maybe I should ask on the e-mail client's maling list, too... Thanks Linux-Fan
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| From | David Wright <deblis@lionunicorn.co.uk> |
|---|---|
| Date | 2020-10-02 05:30 +0200 |
| Subject | Signing emails, was Re: General-Purpose Server for Debian Stable |
| Message-ID | <AVjVE-5Bl-3@gated-at.bofh.it> |
| In reply to | #226396 |
On Fri 02 Oct 2020 at 01:15:36 (+0200), Linux-Fan wrote:
> Dan Ritter writes:
> > Linux-Fan wrote:
>
> [...]
>
> OT: Message signature is still invalid, but I could track it down to some
> weird changes in space characters between what I send to and what I receive
> from the list. I have now idea how to solve it, though...
Looking back at this signed post,
https://lists.debian.org/debian-user/2020/08/msg00741.html
I see the following lines:
On Sat 22 Aug 2020 at 00:17:19 (+0200), Linux-Fan wrote:
> Teemu Likonen writes:
> > * 2020-08-21 20:24:29+02, Linux-Fan wrote:
>
> [...]
>
> The copy I receive from the list does not verify correctly here, either.
> It seems somewhere along the path the e-mails content is actually mangled.
> -- some additional newlines are introduced compared to my local copy from
> the "Sent" folder which verifies correctly.
>
> Attached are `sent.txt` (and `sent.eml`) and `received.txt` -- the very same
> e-mail as seen in my Sent folder and Inbox respectively... Interestingly, if
> I split out the signatures and message contents, I get bad signature for
> both variatns despite the fact that the e-mail client can somehow verify the
> sent e-mail...
>
> ???
> Linux-Fan
> --=_pte5-5038-1598034269-0003
> Content-Type: text/plain; format=flowed; delsp=yes; charset="UTF-8"
> Content-Disposition: inline
> Content-Transfer-Encoding: 7bit
This is the header for the "sent" file. You appear to be sending
8bit data without encoding it. AIUI that contravenes "all data signed
according to this protocol MUST be constrained to 7 bits (8-bit data
MUST be encoded using either Quoted-Printable or Base64)".
It's possible that your mailer set Content-Transfer-Encoding: 7bit
because this message happened not to contain any 8bit characters.
In my mutt, a message like that would be sent with:
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
whereas one containing 8bit chars would be sent with:
Content-Type: text/plain; charset=utf-8
Content-Disposition: inline
Content-Transfer-Encoding: 8bit
(Of course, I'm allowed to send 8bit because I'm not signing it.)
Whatever—somewhere in the chain of transmission, the email
gets encoded into Q-P:
> --=_pte5-5038-1598034269-0003
> Content-Type: text/plain; format=flowed; delsp=yes; charset="UTF-8"
> Content-Disposition: inline
> Content-Transfer-Encoding: quoted-printable
Unfortunately, the Content-Transfer-Encoding is AIUI part of the
signed message, so the "received" file can never match the "sent".
For whatever reason, by the time your email reaches my mailbox, the
"sent" unencoded attachment has been encoded as Q-P, and the
"received" Q-P attachment doesn't need it. As a result, the texts
of the two attachments look very similar, with their complementary
headers. Summarising, as displayed by mutt:
[-- Attachment #2: sent.txt --]
[-- Type: text/plain, Encoding: quoted-printable, Size: 1.8K --]
Content-Disposition: attachment;
FILENAME="sent.txt"
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
--=_pte5-5038-1598034269-0003
→ Content-Type: text/plain; format=flowed; delsp=yes; charset="UTF-8"
→ Content-Disposition: inline
→ Content-Transfer-Encoding: 7bit
↑↑↑↑
and:
[-- Attachment #3: received.txt --]
[-- Type: text/plain, Encoding: 7bit, Size: 1.8K --]
Content-Disposition: attachment;
FILENAME="received.txt"
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 7bit
--=_pte5-5038-1598034269-0003
→ Content-Type: text/plain; format=flowed; delsp=yes; charset="UTF-8"
→ Content-Disposition: inline
→ Content-Transfer-Encoding: quoted-printable
↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑
These → lines are signed.
This is just my interpretation of RFCs 3156 and 3676. A lot of these
RFCs is about Flowed and Delsp. I've assumed that that's all being
implemented correctly. (Mixing Q-P and Flowed is tricky at best,
disallowed at worst.) BTW, I know nothing about .eml files. I'm just
happy not to see tnef files anymore.
Cheers,
David.
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| From | Paul Johnson <baloo@ursamundi.org> |
|---|---|
| Date | 2020-08-21 20:40 +0200 |
| Message-ID | <AGk7f-805-5@gated-at.bofh.it> |
| In reply to | #226371 |
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On Fri, Aug 21, 2020 at 12:46 PM local10 <local10@tutanota.com> wrote: > What would be a reasonably secure and simple way to encrypt files on Linux > and then send them to a non-technical Windows user so she would be able > decrypt and read them? > GnuPG. It's in Debian, there's Windows versions on its website, and it's not some mystery box like Signal.
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| From | Charles Curley <charlescurley@charlescurley.com> |
|---|---|
| Date | 2020-08-21 21:10 +0200 |
| Message-ID | <AGkAi-8po-11@gated-at.bofh.it> |
| In reply to | #226378 |
On Fri, 21 Aug 2020 13:31:00 -0500 Paul Johnson <baloo@ursamundi.org> wrote: > GnuPG. It's in Debian, there's Windows versions on its website, and > it's not some mystery box like Signal. ++ It also has the advantage that the cryptext will stay encrypted on any intermediate servers. WhatsApp and Signal claim their traffic is, but one must take their word for it. -- Does anybody read signatures any more? https://charlescurley.com https://charlescurley.com/blog/
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| From | Marek Mosiewicz <marek.mosiewicz@jotel.com.pl> |
|---|---|
| Date | 2020-08-23 11:30 +0200 |
| Message-ID | <AGUu5-4DO-9@gated-at.bofh.it> |
| In reply to | #226381 |
W dniu pią, 21.08.2020 o godzinie 13∶07 -0600, użytkownik Charles Curley napisał: > On Fri, 21 Aug 2020 13:31:00 -0500 > Paul Johnson <baloo@ursamundi.org> wrote: > > > GnuPG. It's in Debian, there's Windows versions on its website, > > and > > it's not some mystery box like Signal. > > ++ > > It also has the advantage that the cryptext will stay encrypted on > any > intermediate servers. WhatsApp and Signal claim their traffic is, but > one must take their word for it. Not to mention that GPG can be used for asymmetric cryptography. >
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| From | <tomas@tuxteam.de> |
|---|---|
| Date | 2020-08-23 11:40 +0200 |
| Message-ID | <AGUDL-4GQ-3@gated-at.bofh.it> |
| In reply to | #226441 |
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On Sun, Aug 23, 2020 at 11:01:34AM +0200, Marek Mosiewicz wrote: [...] > Not to mention that GPG can be used for asymmetric cryptography. Yeah, but it's a "Windows user" at the other end, and (s)he's "too dumb to install software". And "gpg is too hard". I must say, this theme, which came up here and there tends to make me furious. It's condescending (we know nothing about the user in question. Heck. the original poster has thrown in a query, and for all I can see has disappeared). And it has the potential to become a self-fulfilling prophecy. I stand by: recommend GPG. Come here, if you need help. Learn something along the way. Your life will be more interesting :-) Cheers -- t
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| From | Andrei POPESCU <andreimpopescu@gmail.com> |
|---|---|
| Date | 2020-08-23 13:10 +0200 |
| Message-ID | <AGW2R-5FV-1@gated-at.bofh.it> |
| In reply to | #226381 |
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On Vi, 21 aug 20, 13:07:56, Charles Curley wrote: > On Fri, 21 Aug 2020 13:31:00 -0500 > Paul Johnson <baloo@ursamundi.org> wrote: > > > GnuPG. It's in Debian, there's Windows versions on its website, and > > it's not some mystery box like Signal. > > ++ > > It also has the advantage that the cryptext will stay encrypted on any > intermediate servers. WhatsApp and Signal claim their traffic is, but > one must take their word for it. Signal is free and open source software. Please do feel free to inspect the source code for potential back doors or vulnerabilities. Kind regards, Andrei -- http://wiki.debian.org/FAQsFromDebianUser
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| From | Charles Curley <charlescurley@charlescurley.com> |
|---|---|
| Date | 2020-08-23 16:40 +0200 |
| Message-ID | <AGZk6-7xM-17@gated-at.bofh.it> |
| In reply to | #226443 |
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On Sun, 23 Aug 2020 14:03:21 +0300 Andrei POPESCU <andreimpopescu@gmail.com> wrote: > Signal is free and open source software. > > Please do feel free to inspect the source code for potential back > doors or vulnerabilities. Thank you for the correction. https://signal.org -- Does anybody read signatures any more? https://charlescurley.com https://charlescurley.com/blog/
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| From | Celejar <celejar@gmail.com> |
|---|---|
| Date | 2020-08-25 20:20 +0200 |
| Subject | Signal [Was:] Re: Encrypt files on Linux, decrypt on Windows |
| Message-ID | <AHLI6-3ah-1@gated-at.bofh.it> |
| In reply to | #226443 |
On Sun, 23 Aug 2020 14:03:21 +0300 Andrei POPESCU <andreimpopescu@gmail.com> wrote: > On Vi, 21 aug 20, 13:07:56, Charles Curley wrote: > > On Fri, 21 Aug 2020 13:31:00 -0500 > > Paul Johnson <baloo@ursamundi.org> wrote: > > > > > GnuPG. It's in Debian, there's Windows versions on its website, and > > > it's not some mystery box like Signal. > > > > ++ > > > > It also has the advantage that the cryptext will stay encrypted on any > > intermediate servers. WhatsApp and Signal claim their traffic is, but > > one must take their word for it. > > Signal is free and open source software. > > Please do feel free to inspect the source code for potential back doors > or vulnerabilities. I do use Signal on mobile, and I want to like it, but there are a few things about it that just really bother me (these may not be relevant to the OPs situation): 1) The requirement of associating accounts with (real, working) phone numbers. 2) The (current) refusal [1] to provide an option to export messages into a format easily accessible by the user. (I know, I can read and try to understand Signal's code, and then write my own decryptor - thanks, Signal). 3) The strong encouragement of the use of Google's Play Store to install the mobile app, and the strong discouragement of other, FLOSS compatible, methods of installation. [2] Discussion of these and many other issues with Signal: [3] I'm just a user, and not a very advanced one at that, but I can't get away from the feeling that Signal is somewhat user-hostile, with an attitude of "Trust us - Moxie is a legend, our code is great (and FLOSS), and we really care." All true, to be sure, but still. [1] https://github.com/signalapp/Signal-Android/issues/7586 [2] https://signal.org/android/apk/ [3] https://github.com/privacytools/privacytools.io/issues/779 Celejar
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| From | Andrei POPESCU <andreimpopescu@gmail.com> |
|---|---|
| Date | 2020-08-26 08:30 +0200 |
| Subject | Re: Signal [Was:] Re: Encrypt files on Linux, decrypt on Windows |
| Message-ID | <AHX6x-1Au-7@gated-at.bofh.it> |
| In reply to | #226487 |
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On Ma, 25 aug 20, 14:17:26, Celejar wrote: > > I do use Signal on mobile, and I want to like it, but there are a few > things about it that just really bother me (these may not be relevant > to the OPs situation): I never claimed it's perfect, just that it's not a "black box". See also this comment in one of the discussions you linked that appears to be more balanced: https://github.com/privacytools/privacytools.io/issues/779#issuecomment-471687384 As far as I can tell Signal is still miles ahead of WhatsApp, Telegram, Snapchat, etc. and it's still challenging to get others to use it[1]. One might find that with the "perfect" communication tool there is no one to communicate with :) [1] I basically had to "blackmail" my close family and friends by refusing to install WhatsApp on my private phone. Kind regards, Andrei -- http://wiki.debian.org/FAQsFromDebianUser
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| From | Celejar <celejar@gmail.com> |
|---|---|
| Date | 2020-08-26 14:10 +0200 |
| Subject | Re: Signal [Was:] Re: Encrypt files on Linux, decrypt on Windows |
| Message-ID | <AI2pz-4X7-3@gated-at.bofh.it> |
| In reply to | #226493 |
On Wed, 26 Aug 2020 09:29:06 +0300 Andrei POPESCU <andreimpopescu@gmail.com> wrote: > On Ma, 25 aug 20, 14:17:26, Celejar wrote: > > > > I do use Signal on mobile, and I want to like it, but there are a few > > things about it that just really bother me (these may not be relevant > > to the OPs situation): > > I never claimed it's perfect, just that it's not a "black box". See also I know - I just took advantage of your comment to take the opportunity to vent some of my frustration with Signal. > this comment in one of the discussions you linked that appears to be > more balanced: > > https://github.com/privacytools/privacytools.io/issues/779#issuecomment-471687384 More balanced, perhaps - there is considerable debate in that thread - but I still side with the naysayers (the following quotes are from that comment, not you): > For instance, we showed that users can simply register a random phone I agree that we shouldn't discourage Signal, and certainly not encourage the vastly less free alternatives to it. But we also shouldn't give it a free pass on what I consider to be its somewhat anti-FLOSS / user hostile attitudes. > services since the developer buys from Amazon, drinks Coca-Cola, or > runs Windows 10 isn't about the actual service but about political > beliefs. These is a plain silly analogy. I don't care much about what *the developer* uses in his personal life, and I don't even care that much about what he uses to develop and host the software. I *do* care about what he makes (or strongly encourages) users use, such as the Play Store, Google Accounts, reCAPTCHAS, etc., as mentioned by the OP in that thread. [Back to quoting Andrei.] > As far as I can tell Signal is still miles ahead of WhatsApp, Telegram, Certainly. > Snapchat, etc. and it's still challenging to get others to use it[1]. > One might find that with the "perfect" communication tool there is no > one to communicate with :) ;) > [1] I basically had to "blackmail" my close family and friends by > refusing to install WhatsApp on my private phone. I refuse to install WhatsApp as well - but that just means that I miss some stuff, and have to trouble people to manually email me other stuff ... > Kind regards, Celejar
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