Personal messaging security

A user device, comprising:

• a memory to store instructions;
• and
• a processor, connected to the memory, to:
• receive an electronic message, where the electronic message is encrypted with a security key corresponding to a user of the user device;
• prompt the user of the user device to input security key information, where the security key information comprises authentication information corresponding to the electronic message;
• receive the authentication information from the user of the user device, where the authentication information corresponds to the security key used to encrypt the electronic message;
• authenticate the authentication information;
• receive a security key following the authentication;
• identify a key duration associated with the electronic message, where the key duration comprises an interval of time during which the security key is to be used to decrypt the electronic message,
• determine whether the key duration has expired;
• when the key duration has not expired,
• decrypt the electronic message using the security key;
• and
• when the key duration has expired,
• prohibit content corresponding to the electronic message from being displayed to the user of the user device.

One or more non-transitory computer-readable storage media, comprising:

• one or more instructions that, when executed by a processor of a user device, cause the processor to:
• create an electronic message in response to receiving one or more inputs from a user, where the electronic message comprises destination information corresponding to an intended recipient of the electronic message;
• receive, from the user, a security key corresponding to the intended recipient of the electronic message;
• encrypt the electronic message based on the security key;
• associate a key duration, received from the user, with the security key, where the key duration comprises a time interval in which using the security key to decrypt the electronic message effects a successful decryption of the electronic message and outside of which the security key is inoperative for decrypting the electronic message;
• send the electronic message based on the destination information to the intended recipient;
• receive security key information from a device corresponding to the intended recipient;
• determine whether the received security key information corresponds to the security key;
• authenticate the security key information when the received security key information corresponds to the security key;
• and
• in response to authenticating the security key information communicate the security key and the key duration to the device corresponding to the intended recipient.