Questions tagged [mceliece]

McEliece cryptosystem is an asymmetric encryption algorithm and is a candidate for "post-quantum cryptography", as it is immune to attacks using Shor's algorithm and — more generally — measuring coset states using Fourier sampling.

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Efficient decoding of irreducible binary Goppa codes and the role of matrix P in McEliece cryptosystem

If we assume that the support for an irreducible binary Goppa code $\gamma_1, ..., \gamma_n$ is publicly known, when is it possible to efficiently decode the code? I know it's possible if one knows ...
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How to choose McEliece's parameters?

At the time of this writing, there are 3 sources for parameters for the McEliece public-key cryptosystem out there. The first paper is the original McEliece paper ("A Public-Key Cryptosystem based on ...
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Why in the Rao-Nam private key version of McEliece scheme, P matrix is multiplied after adding error vector?

The private key version of McEliece known as Rao-Nam scheme, the encryption is done as c = (mSG + e)P. What is the need for applying permutation matrix on the error vector?
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How is QKD (Quantum Key Distribution) advantageous over McEliece/AES?

I don't understand the popularity of the idea of QKD (often coupled with OTP). From what I can tell, a quantum-safe key exchange algorithm like McEliece has just as much security while being able to ...