Tag: secure

Secure Multiparty Computation like Yao’s Millionaires’ Problem [Yao82]

SPDZ
http://bristolcrypto.blogspot.com/2016/10/what-is-spdz-part-1-mpc-circuit.html

A secret value x is shared amongst n parties, such that the sum of all shares are equal to x.

• uniformly at random

adding sec

• in SPDZ MACs are used to authenticate the shares.
• global MAC key
• each party knows a share of the global MAC key

sharing an input value

• sharing masked version of x
• each party computes <x>

next:

opening a value
partially
output
directional output
MAC check protocol
coin tossing protocol
commitments