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Table 3 Equal error rates (%) when the adversary has the true biometric features but does not possess the associated secret key

From: Practical security and privacy attacks against biometric hashing using sparse recovery

PCA dimension Biohash length
  128 256 512 1024
200 6.199 4.290 4.243 2.917
1024 6.497 4.902 4.375 3.044