A Novel Three-Layer QR Code Based on Secret Sharing Scheme and Liner Code

Table 2

Overall comparison of related works.

Functio-nality	Method	Utilizing the error correction capability	Recovery computation	Secret payload	Robustness
[3]	Optical encryption	No	O(N^λ log N)(λ ≥ 1)	—	—
[5]	Secret hiding	No	O(N log N)	—	Low
[8]	Secret sharing and hiding	Yes	O(N^2)	Low	Low
[16]	Secret sharing and hiding	Yes	O(N)	Low	Low
[17]	VCS	No	O(N)	Low	Low
[18]	VCS	No	O(N)	Low	Low
[19]	VCS	Yes	O(N)	Low	—
[20]	Secret hiding	Yes	O(N)	Low	—
[21, 22]	Watermarking	Yes	O(N^4)	—	—
This paper	Secret sharing and hiding	No	O(N)	High	High