hashit: function()

in src/mpin256.js [249:290]

• 34 lines of code
• 10 McCabe index (conditional complexity)

        hashit: function(sha, n, B) {
            var R = [],
                H, W, i, len;

            if (sha == this.SHA256) {
                H = new ctx.HASH256();
            } else if (sha == this.SHA384) {
                H = new ctx.HASH384();
            } else if (sha == this.SHA512) {
                H = new ctx.HASH512();
            }

            if (n > 0) {
                H.process_num(n);
            }
            H.process_array(B);
            R = H.hash();

            if (R.length == 0) {
                return null;
            }

            W = [];

            len = ctx.BIG.MODBYTES;

            if (sha >= len) {
                for (i = 0; i < len; i++) {
                    W[i] = R[i];
                }
            } else {
                for (i = 0; i < sha; i++) {
                    W[i + len - sha] = R[i];
                }

                for (i = 0; i < len - sha; i++) {
                    W[i] = 0;
                }
            }

            return W;
        },