Classical Fully Homomorphic Encryption for Quantum Circuits: Difference between revisions

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**'''Key Generation (FHE.KeyGen(<math>1^{\lambda}, 1^L</math>))'''
**'''Key Generation (FHE.KeyGen(<math>1^{\lambda}, 1^L</math>))'''
# For <math>1\leq i\leq L + 1</math>,  
# For <math>1\leq i\leq L + 1</math>,  
# Client generates homomorphic key set, <math>(pk_i,evk_i,sk_i, t_{sk_i}) = </math>HE.Keygen(<math>1^{\lambda}, 1^{L_c}</math>).</br>The public key <math>pk</math> is <math>pk_1</math> and the secret key <math>sk</math> is <math>sk_{L+1}</math>. </br>The evaluation key <math>evk</math> consists of <math>(evk_1,\ldots,evk_{L+1})</math> as well as <math>(pk_{i+1},</math>HE.Enc<math>_{pk_{i+1}}(sk_{i})</math>, HE.Enc<math>_{pk_{i+1}}(t_{sk_i})</math>) for <math>1\leq i\leq L</math>.
# Client generates homomorphic key set, <math>(pk_i,evk_i,sk_i, t_{sk_i}) = </math>HE.Keygen(<math>1^{\lambda}, 1^{L_c}</math>).</br>The public key <math>pk</math> is <math>pk_1</math> and the secret key <math>sk</math> is <math>sk_{L+1}</math>. </br>The evaluation key <math>evk_i</math> consists of <math>(pk_{i+1},</math>HE.Enc<math>_{pk_{i+1}}(sk_{i})</math>, HE.Enc<math>_{pk_{i+1}}(t_{sk_i})</math>) for <math>1\leq i\leq L</math>.
**'''Encryption (FHE.Enc<math>_{pk}(m)</math>))'''
**'''Encryption (FHE.Enc<math>_{pk}(m)</math>))'''
#Client chooses pad key for each message bit <math>z,x\in\{0,1\}^{\lambda}</math>.
#Client chooses pad key for each message bit <math>z,x\in\{0,1\}^{\lambda}</math>.
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