class split(base.Instruction):
code = opcodes['SPLIT']
arg_format = tools.chain(['int', 's'], tools.cycle(['sbw']))
def __init__(self, *args, **kwargs):
super(split_class, self).__init__(*args, **kwargs)
assert (len(args) - 2) % args[0] == 0
def merge(self, other):
if self.get_size() != other.get_size():
# merge as non-vector instruction
self.args = self.expand_vector_args() + other.expand_vector_args()
if self.is_vec():
self.size = 1
else:
self.args += other.args
self.arg_format = tools.chain(self.arg_format, other.arg_format)
class bitdecc(NonVectorInstruction, base.VarArgsInstruction):
""" Secret bit register decomposition.
:param: number of arguments to follow / number of bits plus one (int)
:param: source (sbit)
:param: destination for least significant bit (sbit)
:param: (destination for one bit higher)...
"""
code = opcodes['BITDECC']
arg_format = tools.chain(['cb'], itertools.repeat('cbw'))
class convcintvec(base.Instruction):
""" Copy clear register vector by bit to clear bit register
vectors. This means that the first destination will hold the least
significant bits of all inputs etc.
:param: number of arguments to follow / number of bits plus one (int)
:param: source (cint)
:param: destination for least significant bits (sbit)
:param: (destination for bits one step higher)...
"""
code = opcodes['CONVCINTVEC']
arg_format = tools.chain(['c'], tools.cycle(['cbw']))
class split(base.Instruction):
""" Local share conversion. This instruction use the vector length in the
instruction code field.
:param: number of arguments to follow (number of bits times number of additive shares plus one)
:param: source (sint)
:param: first share of least significant bit
:param: second share of least significant bit
:param: (remaining share of least significant bit)...
:param: (repeat from first share for bit one step higher)...
"""
code = opcodes['SPLIT']
arg_format = tools.chain(['int','s'], tools.cycle(['sbw']))
def __init__(self, *args, **kwargs):
super(split_class, self).__init__(*args, **kwargs)
assert (len(args) - 2) % args[0] == 0
class convcintvec(base.Instruction):
code = opcodes['CONVCINTVEC']
arg_format = tools.chain(['c'], tools.cycle(['cbw']))
class bitdecc(NonVectorInstruction, base.VarArgsInstruction):
code = opcodes['BITDECC']
arg_format = tools.chain(['cb'], itertools.repeat('cbw'))
class bitcoms(NonVectorInstruction, base.VarArgsInstruction):
code = opcodes['BITCOMS']
arg_format = tools.chain(['sbw'], itertools.repeat('sb'))
class bitdecs(base.VarArgsInstruction):
code = opcodes['BITDECS']
arg_format = tools.chain(['sb'], itertools.repeat('sbw'))
def __init__(self, *args, **kwargs):
self.arg_format = tools.chain(['int'], ['int'], ['sbw'],
['sb'] * args[0])
super().__init__(*args, **kwargs)