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Warning for truncpr #526

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Warning for truncpr #526

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d541a6a
add warning for truncpr
GuopengLin Feb 25, 2025
0b31e45
add warning for truncpr
GuopengLin Feb 25, 2025
15ed04e
add warning for truncpr
GuopengLin Feb 25, 2025
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2 changes: 2 additions & 0 deletions crypten/mpc/primitives/arithmetic.py
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Original file line number Diff line number Diff line change
Expand Up @@ -435,6 +435,7 @@ def mul_(self, y):
return self._arithmetic_function_(y, "mul")

def div(self, y):
print("WARNING: Probabilistic truncation leaks some information, see https://eprint.iacr.org/2024/1127 for discussion. ")
"""Divide by a given tensor"""
result = self.clone()
if isinstance(y, CrypTensor):
Expand All @@ -444,6 +445,7 @@ def div(self, y):
return result.div_(y)

def div_(self, y):
print("WARNING: Probabilistic truncation leaks some information, see https://eprint.iacr.org/2024/1127 for discussion. ")
"""Divide two tensors element-wise"""
# TODO: Add test coverage for this code path (next 4 lines)
if isinstance(y, float) and int(y) == y:
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2 changes: 2 additions & 0 deletions crypten/mpc/primitives/replicated.py
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Expand Up @@ -103,6 +103,8 @@ def square(x):


def truncate(x, y):
print("WARNING: Probabilistic truncation leaks some information, see https://eprint.iacr.org/2024/1127 for discussion. ")

"""Protocol to divide an ArithmeticSharedTensor `x` by a constant integer `y`
using RSS (see ABY3 Figure 2: https://eprint.iacr.org/2018/403.pdf).

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