CT-Zer0

Results 2 issues of CT-Zer0

Hi, While I was fuzzing this library with [go-fuzz](https://github.com/dvyukov/go-fuzz), I am encountered with the following panic (index out of range error). I assume it is a simple size check mistake...

Hi, While I was fuzzing this repo, I came across with 2 problems. These are found by [go-fuzz](https://github.com/dvyukov/go-fuzz) ## Go Version `go version go1.16.2 linux/amd64` ## OS Version `Ubuntu 20.04.1...