Table 2 The information entropy.
From: Asymmetric cryptosystem based on optical scanning cryptography and elliptic curve algorithm
Plaintext | Cosine hologram | Sine hologram | Ciphertext | |
|---|---|---|---|---|
\({{\varvec{c}}}_{{\varvec{x}}}\) | \({{\varvec{c}}}_{{\varvec{y}}}\) | |||
1.9577 | 1.1599 | 3.3125 | 7.9528 | 7.9608 |
