hashit: function()

in src/ecdh.js [115:162]

• 39 lines of code
• 12 McCabe index (conditional complexity)

        hashit: function(sha, A, n, B, pad) {
            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);
            }
            if (B != null) {
                H.process_array(B);
            }
            R = H.hash();

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

            if (pad == 0) {
                return R;
            }

            W = [];

            len = pad; 

            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;
        },