To prepare dressing, combine first 6 ingredients in a jar; cover tightly, and shake vigorously.
To prepare salad, cook pasta according to package directions, omitting salt and fat. Drain, and place in a large bowl. Spoon half of dressing over pasta; toss to coat. Cool to room temperature. Add the remaining dressing, corn, tomato, onion, and basil to pasta; toss to coat. Let stand 30 minutes.