摘要:
A method of authenticating a user of a computing device is proposed, together with computing device on which the method is implemented. In the method, an authentication video is displayed on a display. In response to receiving an input at a point in time in the video that matches a pre-selected time reference point, positive authentication is indicated.
摘要:
After a predetermined limit for decryption attempts has been exceeded by a user attempting to decrypt an encrypted electronic message or attempting to decrypt a encrypted electronic certificate associated with an electronic message, access to the electronic message may be restricted.
摘要:
Systems and methods for providing additional security for data being transmitted across a wireless connection that has been established using a known wireless protocol (e.g. Bluetooth) are described. An encryption key is exchanged between a computing device (e.g. a mobile device) and a wireless peripheral device (e.g. a keyboard, a printer). In some embodiments, the encryption key is generated at one of the two devices. Data associated with the encryption key is output at the one device, which can be input by the user at the other device. The encryption key is then recovered at the other device from the input, thereby completing the key exchange. The encryption key can then be used to encrypt and decrypt data transmitted over the established wireless connection, providing additional security.
摘要:
A system and method for retrieving certificates and/or verifying the revocation status of certificates. In one embodiment, when a user opens a digitally signed message, a certificate that is required to verify the digital signature on the message may be automatically retrieved if it is not stored on the user's computing device (e.g. a mobile device), eliminating the need for users to initiate the task manually. Verification of the digital signature may also be automatically performed by the application after the certificate is retrieved. Verification of the revocation status of a certificate may also be automatically performed if it is determined that the time that has elapsed since the status was last updated exceeds a pre-specified limit.
摘要:
A method of authenticating a user of a computing device is proposed, together with computing device on which the method is implemented. In the method a modified base image is overlaid with a modified overlay image on a display and with each execution of the method, at least one of a position of a pre-selected base image reference point on the modified base image and a position of a pre-selected overlay image reference point on the modified overlay image is varied. Positive authentication is indicated in response to an input resulting in the base image reference point on the modified base image being aligned with the overlay image reference point on the modified overlay image.
摘要:
A system and method for sending encrypted messages to a distribution list. In one embodiment, the method comprises: identifying a distribution list address in a message; determining one or more member addresses associated with the distribution list address; for each member address, determining if a public key for a member identified by the member address is available on the computing device; and if so, encrypting the message to the member; sending the encrypted message to the distribution list address only if each of the one or more member addresses associated with the distribution list identifies a member for which a public key is available on the computing device.
摘要:
A method of authenticating a user of a computing device is proposed, together with computing device on which the method is implemented. In the method a modified base image is overlaid with a modified overlay image on a display and at least one of the modified base image and modified overlay image is moved by the user. In addition to the moving, a change in orientation of at least one of the modified base image and the modified overlay image is required. Positive authentication is indicated in response to the base image reference point on the modified base image being aligned with the overlay image reference point on the modified overlay image and the change in orientation matching a pre-selected orientation criterion.
摘要:
A wireless communication device (and its related method of operation) includes, if invoked, password protected access to data stored therewithin and/or to normal device operations and further includes duress password checking logic that automatically causes a duress message to be sent if a duress password has been entered. The duress message is preferably sent without maintaining any user accessible indication of such sending. It is also preferred that the password checking logic automatically cause an end-of-duress message to be sent if a normal password is entered after a duress password has been entered. A plurality of different duress passwords may be entered into a duress password portion of data memory in the device.
摘要:
A method and apparatus for processing digitally signed messages in which address mismatch errors are detected. In at least one aspect, the number of address mismatch errors reported to a user for a message may be minimized for messages that properly incorporate message portions signed by someone other than the sender of the message, as may be the case where the message contains a conversation thread for example, by performing at least one pre-determined action for digital signatures corresponding to signed data appearing after a message separator. The message separator may indicate that the message contains data from an older forwarded message or from an older message that has been replied to, for example. The at least one-predetermined action may comprise bypassing verification of address matches for those digital signatures, or verifying address matches for those digital signatures but suppressing user notification of any address mismatch errors, for example.
摘要:
Systems and methods for operation upon a wireless mobile device to handle message notifications. A method can include receiving a message by the wireless mobile device over a wireless communications network. The received message is processed so that at least a portion of the sender's message is displayed to a user of the wireless mobile device before a signed receipt is provided to the sender.