Add PGP support

[trymeouteh]

iOS does not allow the creation of SMS apps, but there are apps for iOS such as PGP Everywhere which allow uses to easily communicate via SMS using PGP for encryption.

I think QKSMS should consider also adding OpenPGP support by adding these features...

• Create a private key for your phone number
• Import/export your phone number private key
• Upload your public PGP key to keys.openpgp.org
• Seeing if phone number your about to send SMS message has a public key on keys.openpgp.org and if so will download key and encrypt SMS message and then send message
• Easily share your public PGP key in a text message (Same as invite button does but shares your public PGP key)
• Contact List to save public PGP keys of phone numbers you communicate with
• Import/Export contact list of public PGP keys
• After every edit of your contact list, it will remind you to make a backup of your contacts list

This way QKSMS can easily communicate with iOS users using a encryption standard that is common in email and has also been used is SMS. It is possible to use apps such as OpenKeychain on Android but this app will require you to copy the text message and paste it into the OpenKeychain to decrypt the message, since Android allows you to develop SMS apps, why not have a SMS app that does all the encryption and decryption for you within the app.

QKSMS is an amazing free and open source SMS app which can start mainstreaming PGP encryption on SMS messages.

iOS PGP Everywhere App https://www.pgpeverywhere.com/

Android OpenKeychain App https://www.openkeychain.org/

[trymeouteh]

Another suggestion is to integrate OpenKeychain into QKSMS to manage and encrypt/decrypt SMS messages just like how the XMPP Conversations app does not have built in PGP support but integrates OpenKeychain for OpenPGP.