K4 Mac or PC HOWTO, K4PC 1.17 installation, remove DRM settings, Linux, Playonlinux

[promeneur]

0. Presentation

This is the result of 3 days working to find why suddenly the 1.17 connection to amazon fails.

This is a tutorial for:
- installing K4PC 1.17 in a Linux environment with the PlayOnLinux application.
- solving problems: impossible network connection, blank registration screen, failure to refresh the list of books.

I assume you get the background knowledge for using Linux, PlayOnLinux, Calibre 6.6.1, DeDRM 10.0.3, wine config

1. Install k4PC with Playonlinux (POL)

download https://keybase.pub/koumaza/Archive/...1-17-44183.exe

Launch the K4PC installation procedure.

Choose wine 5.0

During installation, K4PC is launched, quit the regitration windows, go to the settings, go to "General", uncheck "automatic update"

Do not forget to click on "register" button after unchecking "automatic update"

Quit K4PC

Continue until the end of the installation.

Warning : there is no updating problem with 1.17, so there is nothing to do to forbid the update, just uncheck "automatic update"

2. Install python 3.9.6

download https://www.python.org/ftp/python/3....thon-3.9.6.exe

With Calibre 6.6.1 and the new DeDRM plugin (10.0.3) you need python 3 installed with K4PC.

With POL select K4PC then go to its settings then the "wine" tab

click on "configure wine"

Change "windows 7" to "windows 8.1" (python 3.9.6 requires "windows 8.1") then "OK".

With POL select K4PC then go to its settings then the "miscellaneous" tab.

Click on "run an exe in this virtual disk".

The following steps are the same as for any app installation.

3. Install "cryptodome" module in python 3.9.6

needed for DeDRM 10.0.3 to find book encryption key

With POL select K4PC then go to its settings then the "miscellaneous" tab.

Click on "open terminal"

run the command

wine py -m pip install pycryptodome

4. Install a recent K4PC authentication certificate

In K4PC, to connect to the amazon server, you need an authentication certificate whose validity date has not expired.

The authentication certificate installed during the installation of K4PC 1.17 has an expired validity date.

Consequences of an obsolete certificate:
- error message saying that the connection is impossible
- blank registering screen
- book list refresh fails.

See explanations here

https://bugs.winehq.org/show_bug.cgi?id=50471

create a text file named b204d74a.0

copy in the following text

-----BEGIN CERTIFICATE-----
MIIE0zCCA7ugAwIBAgIQGNrRniZ96LtKIVjNzGs7SjANBgkqhk iG9w0BAQUFADCB
yjELMAkGA1UEBhMCVVMxFzAVBgNVBAoTDlZlcmlTaWduLCBJbm MuMR8wHQYDVQQL
ExZWZXJpU2lnbiBUcnVzdCBOZXR3b3JrMTowOAYDVQQLEzEoYy kgMjAwNiBWZXJp
U2lnbiwgSW5jLiAtIEZvciBhdXRob3JpemVkIHVzZSBvbmx5MU UwQwYDVQQDEzxW
ZXJpU2lnbiBDbGFzcyAzIFB1YmxpYyBQcmltYXJ5IENlcnRpZm ljYXRpb24gQXV0
aG9yaXR5IC0gRzUwHhcNMDYxMTA4MDAwMDAwWhcNMzYwNzE2Mj M1OTU5WjCByjEL
MAkGA1UEBhMCVVMxFzAVBgNVBAoTDlZlcmlTaWduLCBJbmMuMR 8wHQYDVQQLExZW
ZXJpU2lnbiBUcnVzdCBOZXR3b3JrMTowOAYDVQQLEzEoYykgMj AwNiBWZXJpU2ln
biwgSW5jLiAtIEZvciBhdXRob3JpemVkIHVzZSBvbmx5MUUwQw YDVQQDEzxWZXJp
U2lnbiBDbGFzcyAzIFB1YmxpYyBQcmltYXJ5IENlcnRpZmljYX Rpb24gQXV0aG9y
aXR5IC0gRzUwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAo IBAQCvJAgIKXo1
nmAMqudLO07cfLw8RRy7K+D+KQL5VwijZIUVJ/XxrcgxiV0i6CqqpkKzj/i5Vbex
t0uz/o9+B1fs70PbZmIVYc9gDaTY3vjgw2IIPVQT60nKWVSFJuUrjxu f6/WhkcIz
SdhDY2pSS9KP6HBRTdGJaXvHcPaz3BJ023tdS1bTlr8Vd6Gw9K Il8q8ckmcY5fQG
BO+QueQA5N06tRn/Arr0PO7gi+s3i+z016zy9vA9r911kTMZHRxAy3QkGSGT2RT+
rCpSx4/VBEnkjWNHiDxpg8v+R70rfk/Fla4OndTRQ8Bnc+MUCH7lP59zuDMKz10/
NIeWiu5T6CUVAgMBAAGjgbIwga8wDwYDVR0TAQH/BAUwAwEB/zAOBgNVHQ8BAf8E
BAMCAQYwbQYIKwYBBQUHAQwEYTBfoV2gWzBZMFcwVRYJaW1hZ2 UvZ2lmMCEwHzAH
BgUrDgMCGgQUj+XTGoasjY5rw8+AatRIGCx7GS4wJRYjaHR0cD ovL2xvZ28udmVy
aXNpZ24uY29tL3ZzbG9nby5naWYwHQYDVR0OBBYEFH/TZafC3ey78DAJ80M5+gKv
MzEzMA0GCSqGSIb3DQEBBQUAA4IBAQCTJEowX2LP2BqYLz3q3J ktvXf2pXkiOOzE
p6B4Eq1iDkVwZMXnl2YtmAl+X6/WzChl8gGqCBpH3vn5fJJaCGkgDdk+bW48DW7Y
5gaRQBi5+MHt39tBquCWIMnNZBU4gcmU7qKEKQsTb47bDN0lAt ukixlE0kF6BWlK
WE9gyn6CagsCqiUXObXbf+eEZSqVir2G3l6BFoMtEMze/aiCKm0oHw0LxOXnGiYZ
4fQRbxC1lfznQgUy286dUV4otp6F01vvpX1FQHKOtw5rDgb7Mz VIcbidJ4vEZV8N
hnacRHr2lVz2XTIIM6RUthg/aFzyQkqFOFSDX9HoLPKsEdao7WNq
-----END CERTIFICATE-----

attention from here, the following steps are only valid for openSUSE

As administrator

put b204d74a.0 file in /usr/share/pki/trust/anchors/

run the command to add the certificate in the OS

update-ca-certificates

then the command to check the certificate is added

trust list

the last certificate in the list is certificate b204d74a.0

pkcs11:id=%7F%D3%65%A7%C2%DD%EC%BB%F0%30%09%F3%43% 39%FA%02%AF%33%31%33;type=cert
type: certificate
label: VeriSign Class 3 Public Primary Certification Authority - G5
trust: anchor
category: authority

5. Setting up the DeDRM plugin in Calibre

launch Calibre

go to plugin management

look for the DeDRM plugin and select it

click on "Customize an extension"

click on "Kindle For Mac/PC ebooks"

in the WINEPREFIX field indicate the path to K4PC in Playonlinux

/home/your_user_name/.PlayOnLinux/wineprefix/name_of_the_kindle_virtual_disk/

for example

/home/toto/.PlayOnLinux/wineprefix/kindle/

then click "+", after a while you see that a file containing the decryption key is added

close the window then "OK" then "apply"

6. Have fun