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US 8,509,439 B2Granted
Assigning nonces for security keys
AssigneeIntel Corporation
InventorsDavid Johnston, Duncan Kitchin
Life of this patent
Estimating the term…
Abstract
Secure communications may be implemented by transmitting packet data units with information sufficient to enable a receiving entity to reconstruct a nonce. That is, rather than transmitting all of the bits making up the nonce, some of the bits may be transmitted together with an identifier that enables the rest of the bits of the nonce to be obtained by the receiving entity.
Claims14
A method comprising:
- transmitting a packet data unit including a header and packet data;
- providing a plurality of nonce blocks, each block including a nonce and being associated with an identifier;
- inserting, using a hardware processor, in said header, a plurality of least significant bits of a nonce and an identifier to locate a block including the most significant bits of that nonce;
- cryptographically protecting information in the packet data unit with an encryption key associated with the most significant bits of the nonce;
- and
- decrypting the protected information in the packet only if the most significant bit of the nonce is known.
3 more elements
An apparatus comprising:
- a radio;
- a security module coupled to said radio;
- and
- said security module including a controller to transmit a packet data unit including a header and packet data, to insert, in said header, a plurality of least significant bits of a nonce and an identifier to locate the most significant bits of that nonce and to cryptographically protect information in the packet data unit with an encryption key associated with the most significant bits of the nonce, said controller to decrypt the protected information in the packet only if the most significant bits of the nonce is known.
1 more element
Dependencies are inferred from the claim text.