The Math security model lets you perform integer arithmetic operations.
A PSL file containing a description of the Math security model is located in the KasperskyOS SDK at the following path:
toolchain/include/nk/basic.psl
Math security model object
The basic.psl file contains a declaration that creates a Math security model object named math. Consequently, inclusion of the basic.psl file into the solution security policy description will create a Math security model object by default.
A Math security model object does not have any parameters and cannot be covered by a security audit.
It is not necessary to create additional Math security model objects.
Math security model methods
The Math security model contains expressions that perform integer arithmetic operations. To call a part of these expressions, use the following arithmetic operators:
Number> + <Number> – "addition". Returns values of the Number type.Number> - <Number> – "subtraction". Returns values of the Number type.Number> * <Number> – "multiplication". Returns values of the Number type.The other expressions are as follows:
neg <Signed> – "change number sign". Returns values of the Signed type.abs <Signed> – "get module of number". Returns values of the Signed type.sum <List<Number>> – "add numbers from list". Returns values of the Number type. It returns 0 if an empty list of values ([]) is passed via the parameter.product <List<Number>> – "multiply numbers from list". Returns values of the Number type. It returns 1 if an empty list of values ([]) is passed via the parameter.To call these expressions, use the following construct:
math.<expression name> <parameter>
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