Multiplication of multi-precision numbers having a size of a power of two

摘要

Multi-precision multiplication methods include storing a first operand and a second operand as a first array and a second array of n words. A first weighted sum is determined from multiple subproducts of corresponding words of the first operand and the second operand. The methods may further include iteratively determining a next weighted sum from a previous weighted sum and a recursively calculated intermediate product. The disclosed methods can be used in a variety of different applications (e.g., cryptography) and can be implemented in a number of software or hardware environments.