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COUNTERMEASURES FOR SIDE-CHANNEL ATTACKS ON PROTECTED SIGN AND KEY EXCHANGE OPERATIONS
COUNTERMEASURES FOR SIDE-CHANNEL ATTACKS ON PROTECTED SIGN AND KEY EXCHANGE OPERATIONS
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机译:侧通道攻击对保护符号和关键交换操作的对策
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摘要
Embodiments are directed to countermeasures for side-channel attacks on protected sign and key exchange operations. An embodiment of storage mediums includes instructions for commencing a process including an elliptic curve scalar multiplication (ESM) operation including application of a secret scalar value; splitting the secret scalar value into two random scalar values; counting a number of leading '0' bits in the scalar value and skipping the number of leading '0' bits in processing; performing an ESM iteration for each bit of the secret scalar value beginning with a most significant ' 1' bit of the scalar value including a Point Addition operation and a Point Double operation for each bit on randomized points; performing ESM operation dummy iterations equal to the number of leading '0' bits; and returning an output result for the ESM operation.
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