B-6 GGSW

The GGSW cryptosystem is a list of GLev ciphertexts. In the GGSW cryptosystem, the secret key $S$ is a list of $k$ polynomials (i.e., $S_0,S_1,...S_{k-1}$), and each $i$-th GLev ciphertext in the GGSW ciphertext encrypts the plaintext $-S_0\cdot M,-S_1\cdot M,\dots ,-S_{k-1}\cdot M$, and $M$. This is visually depicted in Figure 10.