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Measurement Device Independent Quantum Digital Signature (MDI-QDS) (edit)
Revision as of 08:09, 3 June 2019
, 3 June 2019→Pseudocode
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<u>'''Stage 1'''</u> Distribution | <u>'''Stage 1'''</u> Distribution | ||
*'''Input''' Key Length (L), Threshold values (s_a, s_v) | *'''Input''' Key Length (L), Threshold values (s_a, s_v), error threshold (E_tol), error rate parameter (e) | ||
*'''Output''' Seller: <math>S_B^0,S_B^1,S_V^0,S_V^1</math> Buyer: <math>B^0,B^1</math>; Verifier: <math>V^0,V^1</math> | *'''Output''' Seller: <math>S_B^0,S_B^1,S_V^0,S_V^1</math> Buyer: <math>B^0,B^1</math>; Verifier: <math>V^0,V^1</math> | ||
**'''Key Distribution:''' | **'''Key Distribution:''' | ||
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####If (<math>|\Psi\rangle=\frac{1}{\sqrt{2}}(|++\rangle+|--\rangle))||(|Psi\rangle=\frac{1}{\sqrt{2}}(|+-\rangle+|-+\rangle)</math>) '''then''' <math>R^i(k)=b</math> | ####If (<math>|\Psi\rangle=\frac{1}{\sqrt{2}}(|++\rangle+|--\rangle))||(|Psi\rangle=\frac{1}{\sqrt{2}}(|+-\rangle+|-+\rangle)</math>) '''then''' <math>R^i(k)=b</math> | ||
####If (<math>|\Psi\rangle=\frac{1}{\sqrt{2}}(|++\rangle-|--\rangle))||(|Psi\rangle=\frac{1}{\sqrt{2}}(|01\rangle-|+-\rangle)</math>) '''then''' <math>R^i(k)=\tilde b</math> | ####If (<math>|\Psi\rangle=\frac{1}{\sqrt{2}}(|++\rangle-|--\rangle))||(|Psi\rangle=\frac{1}{\sqrt{2}}(|01\rangle-|+-\rangle)</math>) '''then''' <math>R^i(k)=\tilde b</math> | ||
* | *Error rate calculation | ||
#Seller and Buyer choose <math>I\subset_R\{1,2,...,L\}, |I|=e</math> | |||
#<math>\forall i\epsilon I</math>, E_k=\frac{1}{e}\sum_i(A^k_R(i)\oplusR^k(i)) | |||
#If E_k>E_tol '''then''' abort '''else''' success | |||
==Further Information== | ==Further Information== | ||