Secure Communications (SMX)

Index

Overview

Navigation and Tool Bars

Content

Options

Receiving an SMX Message

Overview top

On this screen you conduct a communication. It is essentially a text messaging screen (hence SMX - Secure Message EXchange). You can send text, voice recordings or other documents to the recipient via text messaging (SMS), e-mail, AirDrop or servers. You can also export the data (let's just call it a message) to the Shared folder where it can be picked up by other identities on the same device.

Messages are sent encrypted - the original data does not leave your device in a readable format. Messages can be sent as special links, as attachment files or as image containers.

Navigation and Tool Bars top

: return to the previous screen.

: message options. See below (Options).

: clear the recording, attachment and text.

: call up the list of sent and received attachments for all communications. See Data (Document List): SMX Attachments.

: call up the text messaging window. You can view chats depending on the recipient address. You can also send regular (insecure) messages outside of the communication.

: call up the web browser. See Web Browser.

: call up the document list. See Data (Document List).

Content top

On top of the screen you can select the mode of transmission for your message:
: display a list of options; currently the options are AirDrop, Message, Mail, Upload and Export.
: use iMessage to deliver the message.
: use Mail to deliver the message.
: use a server to deliver the message.

Next to the mode is the Send button. Tap it to encrypt the message and bring up the 'Send' screen corresponding to the chosen mode of transmission (if any). Once the message is sent, it is added to the list of messages. A sequence number is attached to each message. This lets you see if all messages have been sent and received.

Between the mode controls and the list of messages are the message composition controls:

: tap to start recording. Tap Stop in the progress display to end the recording. The button turns green to indicate that a recording is ready to be sent.

: tap to attach a document. The button turns green to indicate that a document is ready to be sent. The document's description is entered into the text field. Any text in this field will become the description of the attachment. If the document is locked, then you will be asked to authenticate once you tap Send.

The text entry field for message text. Next to it is the

button. Tap it to clear the text.

The list of messages makes up the rest of the screen. Messages are ordered with the most recent on top. Sent messages are indicated by

and green text. Received messages display the image of the sender and are displayed in magenta. Attachments are indicated with a document icon. Tap it to call up the standard document options. See Data (Document List): Document Options. If an attachment has been relocked or the lock for the communication changed, then you may have to authenticate before accessing the attachment.

If the attachment is a voice recording (or other sound document), then a speaker icon (

) is shown next to it. Tap it to start playback (you may have to authenticate). Tap it again (or any other visible speaker icon) to stop playback.

Options top

You can choose to send your messages in three different ways:
Message: set this to send text as encrypted special links. When you tap them on your device, you will be switched to CerebraLock (if necessary), the link will be decrypted and the message will be added to the appropriate communication (usually, but not necessarily, the current one). If you send an attachment, then the whole message will be sent as an attachment:

Attachment: the message - even if it is only text - will be put into an encrypted document and sent as an attachment file. To receive an attachment, tap on it or tap and hold and then 'Open in CerebraLock'.

Container: if your message is not too large, you can also send it hidden in a container image. See Data Formats: Containers and Terminology and Concepts: Steganography. You can use the Default container set in your identity or a Custom container. In the latter case you will be asked to select an image every time you send a message. If messages are too large then they are sent as normal attachments.

Check Server: when using a server to exchange messages, it is more convenient to automatically check the server for pending messages. You can set a check interval for each communication.

Receiving an SMX Message top

There are three ways to receive messages:
• Pasteboard.
A link or attachment was copied and placed in the pasteboard. To copy, tap and hold on a link or attachment, then tap 'Copy'. CerebraLock 'listens' to the pasteboard and recognizes copied SMX messages.
• Links.
A special link was tapped. iOS opens CerebraLock if necessary and passes it the link.
• Files.
When you receive a message via AirDrop or another app (e.g. Mail, Messages), tap on the attachment and the iOS document viewer opens up. One of the sharing options in the viewer will be 'Open in CerebraLock'. Tap to place the attachment into CerebraLock's Inbox which is one of the public folders.

CerebraLock 'listens' to the pasteboard, and checks the public folders when you log in or open a communication document. Whichever way CerebraLock receives an SMX message - it will examine it and, if valid, add it to the intended communication. A notification banner will show when CerebraLock is receiving data in the background. Tap on it to switch to CerebraLock.

Unread messages will be indicated by a badge on the SDX icon on the Main Screen and on each individual communication on the SDX screen.

Previous: Secure Data Exchange (SDX) Next: Sending Secure Data

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