TESLA Broadcast Authentication Protocol

A request issued by the receiver to obtain an upper bound on the sender's time.

The sender's reply containing its timestamp and a nonce.

Calculating an upper limit on the sender's time, based on the received timestamp.

A time synchronization protocol where the receiver is interested in an upper bound on the sender's clock time.

A randomly generated value used for authentication.

Used to authenticate the sender's message.

Difference between sender and receiver clocks.

A cryptographic primitive using a one-way hash function to generate a sequence of values, where each value depends on the previous one.

A function that's easy to compute but hard to invert given the output.

Ensuring that receivers are synchronized with the sender's time in a secure communication protocol, for example, TESLA.

Protocol that guarantees the authenticity of a broadcast message.

The additional computational or storage cost associated with each packet in a data transmission.

A cryptographic method for verifying the authenticity and integrity of a digital document, message, or other data.

The commitment to a complete one-way chain. It allows verification of any value in the chain.

The various elements of a generated one-way chain.

The number of time intervals after a key is generated before it's disclosed.

A cryptographic checksum used to authenticate data packets.

A sequence of cryptographic keys generated using a one-way function.

Keys obtained from the main key chain (F) used to compute MACs.

A fixed length period of time in a system.

A particular packet sent at time interval i+1.

Verifying the legitimacy of received keys by checking previous keys.

A specific key in the generated key chain.

A protocol for secure communication, scalable to many receivers, using one-way chains, and time-synchronization.

TESLA's security relies on the computational intractability of forging packets authenticated by receivers.

The time at which a sender reveals a value in a one-way chain.

Receiver's clock is synchronized to the sender's with a maximum error ∆ (delta).

Keys used by the receiver to verify the authenticity of TESLA packets.

A cryptographic system generating values sequentially, where later values depend on previous ones.

A packet is safe if the sender disclosed the matching key.

A uniform duration used for key disclosure in TESLA by using one-way chain.

Asymmetric security is achieved by loosely time-synchronized clocks and delayed key disclosure.

Message Authentication Code. A cryptographic checksum ensuring the integrity of a message.

Clocks of sender and receivers are not precisely matched, but are within acceptable tolerance for the protocol.

A server that validates and timestamps TESLA packets, fostering trust in the network.

Nodes in a network have slightly different clocks but are within a defined error margin.

Using a one-way chain to cryptographically authenticate messages based on the time of transmission.

The sender's configuration in TESLA protocol to divide time into uniform intervals and assign a key from the one-way chain to each interval.

Cryptographic functions that provide pseudo-random outputs making it hard to predict.

A process in the TESLA protocol where receivers verify that a received message is not compromised by checking the MAC key's secrecy by the disclosure time and buffer the message if valid

Adding a timestamp to a document to verify its creation time.

A protocol for synchronizing computer clocks over a network.

Verifying user identity using a password.

Mathematical limits on cryptographic systems.

Ensuring authenticity of information in a broadcast environment.

Creating timestamp documents that cannot be tampered with.

System generating unique passwords for each login.

Networks for transmitting data from a single source to groups of recipients.

Routing paths that are established securely.

Cryptographic method to verify the authenticity of a message.