PKCS15: function()

in src/rsa.js [283:326]
37 lines of code
11 McCabe index (conditional complexity)

        PKCS15: function(sha, m, w) {
            var olen = ctx.FF.FF_BITS / 8,
                hlen = sha,
                idlen = 19,
                H, i, j;

            if (olen < idlen + hlen + 10) {
                return false;
            }

            H = this.hashit(sha, m, -1);

            for (i = 0; i < w.length; i++) {
                w[i] = 0;
            }

            i = 0;
            w[i++] = 0;
            w[i++] = 1;
            for (j = 0; j < olen - idlen - hlen - 3; j++) {
                w[i++] = 0xFF;
            }
            w[i++] = 0;

            if (hlen == this.SHA256) {
                for (j = 0; j < idlen; j++) {
                    w[i++] = this.SHA256ID[j];
                }
            } else if (hlen == this.SHA384) {
                for (j = 0; j < idlen; j++) {
                    w[i++] = this.SHA384ID[j];
                }
            } else if (hlen == this.SHA512) {
                for (j = 0; j < idlen; j++) {
                    w[i++] = this.SHA512ID[j];
                }
            }

            for (j = 0; j < hlen; j++) {
                w[i++] = H[j];
            }

            return true;
        },