Tuliani
Jonathani Roshan Tuliani, Cambridge GB
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20100191977 | DATA CERTIFICATION METHOD AND APPARATUS - Apparatus for certifying electronic data supplied by a user receives data to be signed, supplied by the user from a source device, at a certifying apparatus including at least a signature server providing a signing function. An encrypted password is received at that server from the source device via a first communication path, the password being generated by an authentication system providing an authentication function separate from the signing function and the password being transmitted to the source device via a second communication path, the signature server and the authentication system have different communication paths with the source device. A version of the encrypted password is communicated between the signature server and the authentication system via a third communication path, different to the first and second paths, for authenticating the user. A result of the authenticating of the user is determined at the signature server by the communication between the authentication system and the signature server, that result being determined by verification of the version of the encrypted password, that verification being performed without the signature server verifying the actual plaintext password. The data to be signed is signed using elements of information secure to the signature server if the result of the authentication indicates that the user is authenticated. The signed data from the certifying apparatus is then passed to a recipient device so that the elements of secure information certify that the data supplier is the user. A method of certifying the data is also disclosed. | 07-29-2010 |
Jonathan Roshan Tuliani, Cambridge GB
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20080201577 | AUTHENTICATION DEVICE AND METHOD - An apparatus for generating intermediate cryptogram data corresponding to a dynamic password for a first cryptographic scheme, the intermediate cryptogram data being suitable for display using a device designed for a second, different cryptographic scheme, the apparatus including: a communications interface for communicating with a said device; and a processor coupled to a memory, the memory storing processor control code to control the processor, when running, to: generate a dynamic password according to the first cryptographic scheme; and generate intermediate cryptogram data corresponding to said dynamic password, the intermediate cryptogram data being suitable for outputting to the said device so that, when the said device processes said intermediate cryptogram data according to the second cryptographic scheme, the said device generates data suitable for displaying said dynamic password. | 08-21-2008 |
20080285746 | Computationally Asymmetric Cryptographic Systems; - This invention is generally concerned with methods, apparatus and computer program code for a computationally asymmetric hash function, in particular for use with symmetric cryptographic algorithms. We describe a method of determining a computationally asymmetric hash function value, the method including: receiving input data to be hashed; computing an asymmetric value from said input data, said asymmetric value being computable by two methods, a first method employing at least one first parameter and a second method employing at least one second parameter, computation of said asymmetric value by said second method being faster than by said first method; and determining a computationally asymmetric hash function value using said asymmetric value. We also describe methods of providing a computationally asymmetric electronic signature from a symmetric cryptographic signature. | 11-20-2008 |
Jonathan Roshan Tuliani, Cheshire GB
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20120311321 | DATA CERTIFICATION METHOD AND SYSTEM - A data certification system and method for signing electronic data with a digital signature in which a central server comprises a signature server and an authentication server. The signature server securely stores the private cryptographic keys of a number of users. The user contacts the central server using a workstation through the secure tunnel which is set up for the purpose. The user supplies a password or other token based on information previously supplied to the user by the authentication server through a separate authentication channel. The authentication server provides the signature server with a derived version of the same information through a permanent secure tunnel between the servers, which is compared with the one supplied by the user. If they match, data received from the user is signed with the user's private key. | 12-06-2012 |
Jonathan Roshan Tuliani, Dublin IE
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20130159383 | APPLICATION-DRIVEN CDN PRE-CACHING - Techniques are provided for the caching of content prior to the content being requested. A request for desired content may be received from a client application at a caching server. The request may also indicate additional content related to the desired content that may be subsequently requested by the client application. The indicated additional content (and the desired content, if not already cached) is retrieved from an origin server. The desired content is transmitted to the client application at the user device, and the additional content is cached at the caching server. Subsequently, a second request may be received from the client application that includes a request for the additional content. The additional content, which is now cached at the caching server, is served to the client application by the caching server in response to the second request (rather than being retrieved from the origin server). | 06-20-2013 |
Jonathan Roshan Tuliani, Mount Merrion IE
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20150381558 | NSEC3 PERFORMANCE IN DNSSEC - A method includes receiving, at a server, a request from a DNS client. The request identifies a domain name to be resolved that is not able to be resolved by the server. The method includes identifying a hash of the domain name as being part of a set of hashes. The hash of the domain name identified at the server was computed using a first cryptographic technique. However, the hash can be computed by an external system using a second cryptographic technique. The first cryptographic technique is able to compute the hash in substantially fewer or substantially less complex operations than the operations required to compute the hash using the second cryptographic technique. The method further includes returning a result indicating that the domain name cannot be resolved, including returning an indicator identifying the set of hashes. | 12-31-2015 |