[Android Tutorial] PGP Signature - Encrypt/Decrypt message

[Learn Bitcoin]

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Hi BitcoinTalk!

So far, I have written two PGP tutorials, and those are for Linux and Windows users. But I was wondering if there are any apps for Android users. Most of my local users use Android devices. So, here I am with another PGP thread, and I guess this is the last one. I do not have a MAC or iPhone to test PGP on those devices.

Image source: primekey.com

➥ More PGP Tutorials:

• ▶ [Eng: Tutorial] PGP Signature - Encrypt/Decrypt message (Linux Only) - Learn Bitcoin - English
• ▶ [Eng: Tutorial] PGP Signature - Encrypt/Decrypt message - Fingerprint -mdayonliner- English
• ▶ [Tutorial] PGP/GPG (Mac OS X) - Husna QA- Indonesian
• ▶ [Tutorial] PGP/GPG (Microsoft Windows) - Husna QA- Indonesian
• ▶ [Tutorial] PGP/GPG (Linux) - joniboini- Indonesian
• ▶ PGP Tutorial Bangla - Windows- Learn Bitcoin - Bangla

➥ Install OpenKeyChain

Openkeychain is an Android App that you can find on the Play Store. Search on Play Store, or you can try via the link; https://play.google.com/store/apps/details?id=org.sufficientlysecure.keychain
After installing the app, please open it and follow the next step.
➥ Generate Key:

Follow the steps below. See the image caption.

	Tap on Create My Key	Write your name and tap Next	Write your email and Tap next

	Check on Publish on keyservers If  you want to upload your public keys on key server and Tap On Create Key	Your Key is generating	Your Key is ready

To see your public key, tap on the clipboard Icon, which will copy your PGP Public key. In my case, this is my Mobile Public key, which I generated a minute ago:

Code:

-----BEGIN PGP PUBLIC KEY BLOCK-----
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=rso3
-----END PGP PUBLIC KEY BLOCK-----

➥ Export Secret Key:

To export your secret key, follow the steps shown below:

	Tap on three dot and tap on Backup Key	Check on I have written down this backup code and tap on Save backup	Save this file on your device

Make sure to write down your Backup key. If you try to import the Secret key into another device, it will ask for your backup key.

➥ Send Encrypted Message:

To send an Encrypted message, you need someone's PGP Public key, and you have to import it into your device so that you can send them an encrypted message. To import someone's Encrypted key, Copy their Public key. In my case, I am going to copy my other test key. After copying the recipient's Public key, follow the steps shown below:

	Tap on + Icon and tap on Import from file	Tap on three dot and then tap on Read from clipboard	Tap on Import

Now you have the recipient's address already. Let's send an Encrypted message!
Click on three lines on the top left side, and follow the steps shown below:

	Tap on Encrypt/Decrypt	Tap on Encrypt Text	Tap on Encrypt to and write the name of user that you imported a minute ago

Now write your message, and Finally, Tap on the locked Clipboard icon on the top right side. It will encrypt the message and copy the encrypted PGP message. Now paste it anywhere to see what it looks like. Here is my result;

Code:

-----BEGIN PGP MESSAGE-----
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=j5Os
-----END PGP MESSAGE-----

We are almost done. One thing I did not show is how to decrypt, as I believe everyone could decrypt a message. First, copy the encrypted message.>> Tap on three lines in the top left corner.>> Tap Encrypt/Decrypt >> Read from Clipboard >> Boooom! You are done!

Thanks for reading!  

[cryptoWODL]

This is my mobile public key, which I generated a minute ago from the instructions you provided.

Code:

-----BEGIN PGP PUBLIC KEY BLOCK-----

mQGNBGVVo1sBDAC790bVrrvzAFPnVUBPhF2TL6NBr0m68yx7ywf5eKJpVj6HNpfY
OTtQtIjFFjwxdXS7vPVP1VTR0I0m4G0vn47niREIYOrjPiIdkmrN3ho3zq3Uy27Y
PMM/u2ksNy8mRcmA2xB/coWZJNqdaSwJGTfHHe9Tf3Q4ZqJlUXebsE5489IkNHpi
I7S9qMbgXrg7IpvdirULVL5pUCQ3Px5RyzMqWPTjx+3n/vibO2xhGarqVrbAgbTz
YZpU5DevZFii0CT3PaAcS+5m680L+D9IZsJzXggATiVJ80REOFsPXQbzeKTAzxmW
2u1vue3VM2lvnMB0BO6wt9FrJn8KQt++03286rZA03AfMRont3MU3YautpEo5epp
d+sWnaKZdQqQvv1mKTJO0V3B/0dkr5uclZuTbTC1jYD7d+wPD1NtRrn7/9GY8LVL
OoO5fxj2NNRBaN8VmlMC3gkUmpPMxIG6EcUrizosWE1l7h42mSVA1ey99TiD1Tha
aQX21vn2uAWYuEkAEQEAAbQlY3J5cHRvV09ETCA8bWluZGJsb3dpbmc3MzhAZ21h
aWwuY29tPokBsAQTAQoAGgQLCQgHAhUKAhYBAhkBBYJlVaNbAp4BApsDAAoJEEDH
aMgj+B9dgy4L/jNMw6HgmsqJHHg2osXVXZx5G+xCcHM715wqOqqmQ9Xcg8H6W1zT
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bRJtpuwYzTvFWjXx9AYXNTiT6rTXWFfwSgQlEakz8MtyuxCpZ1nhK5vUSwCUi1ZE
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gcKsK3rpPN0EhoVp59dKvwV+S/eP4G09OxHg9oTSl2nPpeAfmkccn+3bYSTViafc
936bRvHCKVC9wgAJODZRSxtbKkwqUcfrRDstQ14YK2YMCrxyDEG8x97O1cBvotTz
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q4SDk7jAVwvIiNG0CTkP5asmsyNMAej0lHYgGwVZsOY5GTB8s72lLSsNdPfwEElZ
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UlrxuQudSBCQNtr4Pv1TfxcDS2VnfKqhIt6I7Bsh0n05uS8/XKHSdwI5ky66t3r+
7D8mO1vH6Iei+dwl2UDsN5X5ciCRh5UD2G6NlrJy6RPe9fGQ/CwmfRLLZcA+ip0e
REK3o2jp+DHYU5lWJm4aYD+Csw+gynQHGdOdZCZ+Aebdvu7WGe3pNaZLmJfcH6fN
xkrmyMQXlcw1r9+ppVBA1ZN4Ad5OO5WkSObvkNnC2aRTU2k=
=YnAT
-----END PGP PUBLIC KEY BLOCK-----

[ImThour]

What a detailed thread mate, I appreciate it. It will be a go-to thread for anyone who wants to do PGP Signature on Android. Clean, concise, and enough screenshots to follow for each step.
I always love threads like these on the forum, with proper formatting and concise to-the-point text.

I do not have a MAC or iPhone to test PGP on those devices.

Can you use any Virtual Machine (VMWare) to test for Mac? I think you can do that easily by installing MacOS.

[Learn Bitcoin]

What a detailed thread mate, I appreciate it. It will be a go-to thread for anyone who wants to do PGP Signature on Android. Clean, concise, and enough screenshots to follow for each step.
I always love threads like these on the forum, with proper formatting and concise to-the-point text.

Thank you very much! This is the best comment I have got so far from this forum. I was amazed by your comment, which will motivate me to write about such topics in the future. As you can see, I have written two more tutorials before, but I do not see any genuine interest from forum users. Either they do not understand the importance of learning PGP or just ignore it. I thought it was a lack of writing.

I do not have a MAC or iPhone to test PGP on those devices.

Can you use any Virtual Machine (VMWare) to test for Mac? I think you can do that easily by installing MacOS.

I guess I can do it. But as I said above, I do not see much interest from forum members 

[UpTober]

~snip~

I saw that you posted this post on our own local board Pakistani board and replied.
This post of yours is certainly instructive but sadly no one on our local board has evaluated it properly.
I don't know how far I can go but I will translate these posts of yours to our own local boards in the future to properly make you respected and known there.
I don't know what country you are from but I see you have made several posts about PGP. Thanks good job.

I sent you a message today and will see you when you have time.

Code:

-----BEGIN PGP MESSAGE-----

hQGMA01VYPjWVnQkAQv+P58RCSjDb2WRKbvEeO0pPRnliDGe7bTEA16jqTDPBgCr
O/RKbmrUA4JWf07jrpyDSYwo+5OGpF8F/w/+iwZU8GJP1uzQLzsOTUHCeKsFmQ0G
uIrXdmofTBGxpiCqSFtLkfHO5ChfpI9JVO5C2xErZT0VqFE5vwgj8nwculBr9616
AklKyYydAXSlVYwvILuZ82x00pDNbQn6vgFrWMAgBp4fAe9BDlIhnxh4rj0hgLai
S7cnisIsqUSOwKH0iuvsZ82hqMzdBQHbT8rT7TFIz0ypHkHqc5sUN1bALGmtK7xQ
czUuE6W75JHj24asKvfIgkMTCYOOsyv27bqwJogvt0aMYFgTDshfv5F4x4OhzxM1
JP0KiK5+/bjnfEcOK5e3USTl2pE/J71qQB3RyODc/2F7pn33HhI9ttcCFwq4+K2z
pedsmeevEjtgzQprF/IRCwSvVm7tbaQ5tT4wdmYQyhozCv2u8mXa+hiBpQaTDfdW
mZ+yETapfSdRghTRBMiZhQGMA//3BFGCxHj8AQwAlrQuf1pI643Gve2ZhOH6ERBL
L8CyDfAv2n4r2/FruGQUhlP4t73xvHkqrg7k4SeE8FAIspJGnEx/EHZAidXa0SNr
jPgu9ekgPQDDRC0VngUttFsB6+zEiCRYg3iLIu6wLSk+DZAEpnwlNar0QQsr2ACP
DjyTJjo9GwdMvavz0QtlfRWfeva5MllT2cDd3JdbcKUlBrAomRrGdilGjDHtEVIh
pGXlVIO6UgoIHVuFiezivKrz43j46I/WW7qBERRSXdeIMBHu50Go0Y/rdmLnD2io
IOxfJYUbyx+rJcUAEoYPTNW448dc2ZjQawNPd2D0xZSi8VEW9+DC+/LmKjWpTUDT
wJiE/1Sf7ccjjmXFIIwhEvwNX/5GzJO5WJn7c00vtNbEOwAnLGMcNISv/oIZDcxM
DkqhhncFCuOv0emqY6HdybbBnXrzuhv9kLqffolcd85CJb071A88JnsiNUSOMQ1e
B2sW8zhoKn/pGkRVOg/njB7UTrYc2vUJL0Qm9Zce0sFbATP3a6iUBb7OcO/Lyqqj
s3sKVsmd1vNmDSNYGc2vzxsrKVw6Bu5Vo29TrsWg1g94uH6wHw2ne3fMaiFhLFhW
UkAFWfoYgO++o7s3729nMFP0RZ/jPRRRCRt6xYd1cwfUngtCjalk3ghtS8p9EZvi
qbZy2yU4+ReUfOHkTBF/jOvZ+JnTcq5sUVSt6UkkAcLsK6nMdOvv0NRNh3nI4i1n
d8vmERpwoD8cshjazwE74KYsmRh/7i7bok6kZUKoBeTtgpYZ50kLwiinhCJf7Pdq
F/DekzbbxxE7VhhyoOJ0kXZfTA3332Sn2Sqv+e5GF7FBHbk3OaVaPyWn2sr/knBI
Ulcz1GaqmI0aK6eTZLZz/e+GQCVNePSBF9B84Zz4QipgS3dz2HtHd4ewo1vPgN32
iPSmj1kn/NeQ9QmW70Zl5AWAIiTn3162aM9anIoX9PhRr9XsOpCLRhOGaD7ThWHd
Zq0m4ykMKRlkfV8pIJc/OR/9qCq2rfHxHpGi9yF010x7TkaBmPAxyDB1uLg7UFzS
HRaelqi0RxM7tHn/OSJ1q7CS2cgZZoHZXlqGODatUb/VgNuc4hb7RhWbTZwF3P8m
bKJ5MKljbwNsjeerr/V7xuSZi0jdCrPYoupYSWfipSNfeBU3UGdjzlPjDha7JsW5
tKAHy18EpkFIY20O8+EQgpPeAc033JxzE6wAuMPI5TczJ/a6tL898sO/JSg=
=5pOo
-----END PGP MESSAGE-----

[Learn Bitcoin]

I saw that you posted this post on our own local board Pakistani board and replied.
This post of yours is certainly instructive but sadly no one on our local board has evaluated it properly.

Thanks, but I didn't write it with the hope that everyone or a certain community will evaluate it or not. Some members saw the post, and I hope they have learned something new. Some of them replied, too. So, why do you think they didn't evaluate my post?

I don't know how far I can go but I will translate these posts of yours to our own local boards in the future to properly make you respected and known there.

Thanks for your offer, but please, NO. You don't have to translate my posts. I wrote only four tutorials about PGP, and I can translate my topic into several languages. I have already posted my two threads in the Pakistan Local thread. If I need to post the remaining two threads, I will translate them myself. Once again, please do not translate my threads.
I thought you were a genuine newbie, But it doesn't seem you are a newbie.

[Saint-loup]

It's a very interesting topic thank you very much for that, but IMO must people looking for PGP apps on Android are doing it in order to find a way to check Electrum apk signatures right on their smartphones (and without using a shell) because nobody can fully trust Google Play Store (it can be hacked one day) and it doesn't always offer the last version released of the Electrum app. So are you able to check Electrum apk signature with Openkeychain, and if yes how are you doing that please?