One Time Pad Recall OTP. Assume that the RNG stopped working in the middle of the key generation and generated k1, a key which length is half the length of message m. Answer the following questions. (a) If we use k1 two times (i. e. use k1||k1 as the key, where || denotes concatenation) to encrypt m using the OTP scheme, will the resulting ciphertext be secure

Aturning operation is performed with following conditions: rake angle of 12°, a feed of 0.35 mm/rev, and a depth of cut of 1.1 mm. the work piece is aluminum alloy 6061 with t6 heat treatment (a16061-t6). the resultant chip thickness was measured to be 1.0 mm. estimate the cutting force, fc. use shear stress of 207 mpa and coefficient of friction on the tool face of 0.6.