我被要求为表格编码电子签名。但我无法从描述中理解一件事。是我的资格还是缺少什么?
这是描述:
MAC008(x1, x2, …, xn) := RSA(SHA-1(p(x1)||x1||p(x2)||x2||…||p(xn)||xn),d,n)
where:
|| - symbol lines connecting
x1, x2, …, xn inquiry parameters;
p function that returns the parameter length. The result is provided as a three-segment number (e.g. 007)
d – RSA secret exponent
n- RSA module