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suppose you have a processor that can perform a single des encryption or decryption operation in 2-26 seconds suppose
1 what are the possible lengths for aes keys for each key length how many rounds are in aes what is the aes block size2
1 how much space would be required to store a table for an entire idealized block cipher that operates on 64-bit blocks
an electric heater with a capacity p is used to heat air in a spherical chamber the inside radius is outside radius and
1 suppose a chosen-ciphertext attacker cannot recover the secret decryption key for an encryption scheme does this mean
1 consider a group of 30 people who wish to establish pair-wise secure communications using symmetric-key cryptography
a section of a long rotating shaft of radius is buried in a material of very low thermal conductivity the length of the
provide a concrete example selected from media reports or your personal experiences in which attackers compromised a
a conical spine with a length l and base radius exchanges heat by convection with the ambient the coefficient of heat
a very large disk of thickness g is mounted on a shaft of radius the shaft rotates with angular velocity ri z the
find a new product or system that manipulates secret data this might be the same product or system you analyzed for
a circular disk of thickness g and outer radius is mounted on a shaft of radius the shaft and disk rotate inside a
for your platform language and cryptography library of choice summarize how the cryptographic pang works internally
a disk of radius and thickness ro g is mounted on a steam pipe of outer radius the disks surface is insulated from to
implement a naive approach for generating random numbers in the set 0 1 191 for this naive approach generate a random
consider the moving plastic sheet of given example in addition to cooling by convection at the top surface the sheet is
suppose message a is one block long suppose that an attacker has received the mac i for a using ci3c-mac under some
1 describe how each of the issues in section 83 applies to your personal computers hardware and software configuration2
a cable of radius conductivity k density or u and specific heat moves through a furnace with velocity u and leaves at
1 investigate the random number generators built into three of your favorite programming languages would you use these
a cable of radius conductivity k density or u and specific heat moves with velocity u through a furnace and leaves at
a thin wire of diameter d specific heat conductivity k and density p c u moves with velocity u through a furnace of
1 in our design of a secure channel we said that the message numbers must not repeat what bad things can happen if the
find a new product or system that uses or should use a secure channel this might be the same product or system you
a wire of diameter d is formed into a circular loop of radius the loop rotates with constant angular velocity z one