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=== '''Stage 3''' Client’s Output Correction === | === '''Stage 3''' Client’s Output Correction === | ||
* | *Input: Classical output state, <math>l\in\{0,1\}^{\lambda}</math> (or Quantum One time padded state in case of Quantum output), encrypted Pauli corrections <math>\tilde{a},\tilde{b}</math> | ||
* | *Output: Decrypted classical message <math>x\oplus m</math> (or final quantum output of computation <math>Z^zX^x|\psi\rangle</math>) | ||
**'''Decryption (FHE.Dec<math>_{sk}</math>)''' | |||
# Client decrypts | # Client decrypts <math>\tilde{a},\tilde{b}</math> using <math>sk_{L+1}</math> to obtain <math>a,b</math>. | ||
# She then uses the decrypted Pauli corrections to get the output | # She then uses the decrypted Pauli corrections to get the output <math>X^aZ^b|l\rangle</math>, which can be represented as <math>a\oplus l</math>.</br>She operates <math>X^aZ^b</math> on quantum output to get C<math>|\psi\rangle</math>, in case of quantum output. |