Abstract:
A system and method are provided for enabling a client device to connect to a network. The method comprises: obtaining an authorization code via a communication channel different from the network, the authorization code corresponding to the client device; and after detecting initiation of a security negotiation protocol by the client device, using the authorization code in at least one security negotiation operation.
Abstract:
Methods, systems, and computer programs for using an implicit certificate are disclosed. In some aspects, a message and an implicit certificate are accessed. The implicit certificate is associated with an entity. A modified message is generated by combining the message with a value based on the implicit certificate. A digital signature can be generated based on the modified message and transmitted to a recipient. In some aspects, a digital signature from an entity and a message to be verified based on the digital signature are accessed. An implicit certificate associated with the entity is accessed. A modified message is generated by combining the message with a value based on the implicit certificate. The message is verified based on the digital signature and the modified message.
Abstract:
A client application, when executed by a processor, is operative to create a HyperText Transfer Protocol (HTTP) request containing a target header that includes a confidential value. The HTTP request is to be sent over a Secure Sockets Layer (SSL) 3.0 connection or a Transport Layer Security (TLS) 1.0 connection to a web server. The client application implements at its HTTP layer a countermeasure to a blockwise chosen-boundary attack. The client application generates an additional header having a header name that is not recognizable by the web server and inserts the additional header into the HTTP request ahead of the target header, thus creating a modified HTTP request. The modified HTTP request is to be sent, instead of the unmodified HTTP request, over the SSL 3.0 connection or the TLS 1.0 connection to the web server.