Publications by Vinod Malathidevi Prabhakaran

Secure Network Coding with Erasures and Feedback

Christina Fragouli, Suhas Diggavi, László Czap, Vinod Malathidevi Prabhakaran

Secure network coding assumes that the underlying network links are lossless, thus it can be applied over lossy networks after channel error correction. Yet it is well known that channel losses, such as packet erasures, can be constructively used for secre ...

2013

Untrusting network coding

Ghid Maatouk, Christina Fragouli, Vinod Malathidevi Prabhakaran, Yasin Buyukalp

In networks that perform linear network coding, an intermediate network node may receive a much larger number of linear equations of the source symbols than the number of messages it needs to send. For networks constructed by untrusted nodes, we propose a ...

2012

On Multicasting Nested Message Sets Over Combination Networks

Suhas Diggavi, Vinod Malathidevi Prabhakaran, Shirin Saeedi Bidokhti

In this paper, we study delivery of two nested message sets over combination networks with an arbitrary number of receivers, where a subset of receivers (public receivers) demand only the lower priority message and a subset of receivers (private receivers ...

2012

Is non-unique decoding necessary?

Suhas Diggavi, Vinod Malathidevi Prabhakaran, Shirin Saeedi Bidokhti

In multi-terminal communication systems, signals carrying messages meant for different destinations are often observed together at any given destination receiver. Han and Kobayashi (1981) proposed a receiving strategy which performs a joint unique decoding ...

Ieee2012

On multicasting nested message sets over combination networks

Suhas Diggavi, Vinod Malathidevi Prabhakaran, Shirin Saeedi Bidokhti

In this paper, we study delivery of two nested message sets over combination networks with an arbitrary number of receivers, where a subset of receivers (public receivers) demand only the lower priority message and a subset of receivers (private receivers) ...

Ieee2012

Broadcasting Nested Message Sets

Suhas Diggavi, Vinod Malathidevi Prabhakaran, Shirin Saeedi Bidokhti

In this paper, we take a deterministic approach to the problem of broadcasting nested message sets. We mainly consider the scenario where a common message and a private message are to be encoded into a signal and transmitted over a broadcast channel toward ...

2012

Broadcasting Private Messages Securely

Christina Fragouli, Suhas Diggavi, László Czap, Vinod Malathidevi Prabhakaran

Consider a source, Alice, broadcasting private messages to multiple receivers through a broadcast erasure channel; users send back to Alice public feedback that she causally uses to decide the coding strategy for her following transmissions. Recently, the ...

IEEE2012

Secret message capacity of erasure broadcast channels with feedback

Christina Fragouli, Suhas Diggavi, László Czap, Vinod Malathidevi Prabhakaran

We characterize the secret message capacity of a wiretapped erasure channel where causal channel state informa- tion of the honest nodes is publicly available. In doing so, we establish an intimate connection between message secrecy and secret key generati ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2011

Is Non-Unique Decoding Necessary?

Suhas Diggavi, Vinod Malathidevi Prabhakaran, Shirin Saeedi Bidokhti

In mutiterminal communication systems, signals carrying messages meant for different destinations are often observed together at any given destination receiver. Han and Kobayashi (1981) proposed a receiving strategy which performs a joint decoding of messa ...

EPFL Technical Report2011

On Degraded Two Message Set Broadcast

Christina Fragouli, Suhas Diggavi, Vinod Malathidevi Prabhakaran, Shirin Saeedi Bidokhti

We consider the two message set problem, where a source broadcasts a common message

W_1

to an arbitrary set of receivers

\mathcal{U}

and a private message

W_2

to a subset of the receivers

\mathcal{P}\subseteq \mathcal{U}

. Transmissions occur over l ...

EPFL Technical Report2009

Vinod Malathidevi Prabhakaran

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Secure Network Coding with Erasures and Feedback

Untrusting network coding

On Multicasting Nested Message Sets Over Combination Networks

Is non-unique decoding necessary?

On multicasting nested message sets over combination networks

Broadcasting Nested Message Sets

Broadcasting Private Messages Securely

Secret message capacity of erasure broadcast channels with feedback

Is Non-Unique Decoding Necessary?

On Degraded Two Message Set Broadcast

Is non-unique decoding necessary?

Secure Network Coding with Erasures and Feedback

Untrusting network coding

On Multicasting Nested Message Sets Over Combination Networks

Broadcasting Private Messages Securely

On multicasting nested message sets over combination networks

Is Non-Unique Decoding Necessary?

On Degraded Two Message Set Broadcast

Secret message capacity of erasure broadcast channels with feedback

Broadcasting Nested Message Sets