Question: Encrypt the plaintext using LFSR with the following rule and seed. Enter one character per box. Rule: To obtain the next bit of the key

Encrypt the plaintext using LFSR with the following rule and seed.
Enter one character per box.
Rule: To obtain the next bit of the key stream, XOR the sixth-to-last, third-to-last, and last bits.
Seed: 110101
plaintext: duck
ciphertext:

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