This comment dates to SSLeay. It appears to be describing the
incremental trial division strategy where they would pick a starting
candidate, compute moduli by small primes, and then update by
incrementing the candidate and saved moduli instead of dividing from
scratch. We use a simpler rejection sampling strategy.
Change-Id: If2203d616f2b1f632bcd7033ceb60a83d1b75674
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/48047
Reviewed-by: Adam Langley <agl@google.com>