finite group
In mathematics, a group with a finite number of elements, such as the additive group formed by integers modulo a prime p; it is a commonly used algebraic structure in cryptographic protocols.
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Different quantization levels produce different numerical ranges (for example, the 8-bit quantization range is [-128,127] and the 4-bit range is [-8,7]); if unified to the same prime p, the values of low-precision clients may be amplified or the values of high-precision clients may overflow, breaking correctness.
In secure aggregation, a finite group usually refers to the additive group Z_p formed by integers modulo a prime p.
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Different quantization levels produce different numerical ranges (for example, the 8-bit quantization range is [-128,127] and the 4-bit range is [-8,7]); if unified to the same prime p, the values of low-precision clients may be amplified or the values of high-precision clients may overflow, breaking correctness.
50%UnverifiedIn secure aggregation, a finite group usually refers to the additive group Z_p formed by integers modulo a prime p.
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