Sharing Privacy Protected and Statistically Sound Clinical Research Data Using Outsourced Data Storage

Table 5

Anonymous and encrypted clinical data stored on cloud servers.

	Nonsensitive		Sensitive	Ciphertext pair
	Zip code	Age	Condition	CSA.Enc  (𝑝𝑘1,Age)
ℋ1	130**	<30	Heart disease	(𝐜1,1,𝐜^′1,1) //  25
	130**	3*	Cancer	(𝐜1,2,𝐜^′1,2) //  31
	1485*	≥40	Viral infection	(𝐜1,3,𝐜^′1,3) //  45
	Nonsensitive		Sensitive	Ciphertext pair
	Zip code	Age	Condition	CSA.Enc  (𝑝𝑘2,Age)
ℋ2	130**	<30	Heart disease	(𝐜2,1,𝐜^′2,1) //  20
	1485*	<30	Heart disease	(𝐜2,2,𝐜^′2,2) //  23
	1485*	≥40	Viral infection	(𝐜2,3,𝐜^′2,3) //  52
	Nonsensitive		Sensitive	Ciphertext pair
	Zip code	Age	Condition	CSA.Enc  (𝑝𝑘3,Age)
ℋ3	130**	3*	Cancer	(𝐜3,1,𝐜^′3,1) //  35
	130**	<30	Cancer	(𝐜3,2,𝐜^′3,2) //  22
	130**	≥40	Heart disease	(𝐜3,3,𝐜^′3,3) //  52
	Nonsensitive		Sensitive	Ciphertext pair
	Zip code	Age	Condition	CSA.Enc  (𝑝𝑘4,Age)
ℋ4	130**	<30	Heart disease	(𝐜4,1,𝐜^′4,1) //  27
	130**	3*	Viral infection	(𝐜4,2,𝐜^′4,2) //  33
	1485*	≥40	Cancer	(𝐜4,3,𝐜^′4,3) //  43