Errors

1. when reading Enumeration , it's write
`Catched error: InvalidAsn1Error: Expected 0xa: got 0xa0`
but we know    Enumeration != 0xa && Enumeration == 0xa0

2. when reading DER, must read not base64, but decoded base64:
```
let crtInPemBfr = Buffer.from(crtPem)
let crtInHexBfr = Buffer.from(crtInPemBfr , 'base64')
let reader = new asn1.BerReader(crtInHexBfr )

```