Method of sending a self-signed certificate from a communication device

A communication device, wherein said communication device is a mobile communication device, comprising:

• a processor;
• memory for storing a self-signed certificate, the self-signed certificate being signed by the communication device;
• an output device, wherein said output device comprises a display screen of said communication device, or a speaker of said communication device, or a computer equipment of said communication device used to convert electronically generated information into human-detectable form;
• and
• a communication subsystem configured to send and receive communications with a second communication device, wherein said second communication device is a mobile communication device and is in short-range communication proximity to said communication device,
• the processor being configured for:
• receiving a communication in relation to establishing a session from said second communication device,
• sending a message to said second communication device which includes the self-signed certificate to said second communication device and which causes said second communication device to determine whether the self-signed certificate is already authorized in said second communication device,
• when said communication device is authorized in said second communication device, establishing the session using the self-signed certificate,
• when said communication device is not authorized in said second communication device, and as a consequence to said receiving:
• outputting, on the output device, a certificate hash of the self-signed certificate, and
• establishing the session using the self-signed certificate.

A non-transitory computer readable medium having instructions stored thereon executable by a processor for sending a self-signed root certificate from a communication device, the self-signed certificate being signed by the communication device, the instructions comprising instructions for:

• receiving a communication in relation to establishing a session from a second communication device in short-range communication proximity to said communication device;
• sending a message to said second communication device which includes the self-signed certificate to said second communication device and which causes said second communication device to determine whether the self-signed certificate is already authorized in said second communication device;
• when said communication device is authorized in said second communication device, establishing the session using the self-signed certificate;
• when said communication device is not authorized in said second communication device, and as a consequence to said receiving:
• outputting, on an output device of said communication device, a certificate hash of the self-signed certificate, and
• establishing the session using the self-signed certificate,
• wherein said output device comprises a display screen of said communication device, or a speaker of said communication device, or a computer equipment of said communication device used to convert electronically generated information into human-detectable form,
• wherein said communication device and said second communication device each are a mobile communication device.

A method of sending a self-signed certificate from a communication device, the self-signed certificate being signed by said communication device, the method comprising:

• receiving a communication in relation to establishing a session from a second communication device in short-range communication proximity to said communication device;
• sending a message to said second communication device which includes the self-signed certificate to said second communication device and which causes said second communication device to determine whether the self-signed certificate is already authorized in said second communication device;
• when said communication device is authorized in said second communication device, establishing the session using the self-signed certificate;
• when said communication device is not authorized in said second communication device:
• outputting on an output device of said communication device, as a consequence to said receiving, an address of where to obtain a certificate hash of the self-signed certificate, and
• establishing the session using the self-signed certificate,
• wherein said output device comprises a display screen of said communication device, or a speaker of said communication device, or a computer equipment of said communication device used to convert electronically generated information into human-detectable form,
• wherein said communication device and said second communication device each are a mobile communication device.