Re: [yang-doctors] Definition for base64

[Mahesh Jethanandani <[e-mail]>]

I have a protocol (Babel) that defines router-id as a base64 string of 8 octets. I could define it as a string, but isn’t it the case that base64 includes only a set of printable characters defined by the regex below? Not all printable characters are included in the set.

> On Aug 17, 2018, at 10:40 AM, Andy Bierman <[e-mail]> wrote:
> 
> Hi,
> 
> Aren't you confusing YANG data types with message encoding?
> A base64 string at the YANG level is just a string. There are no non-printable chars
> like a binary string could have.  Not sure why the type base64 is interesting in YANG data models.
> 
> 
> Andy
> 
> 
> On Fri, Aug 17, 2018 at 10:26 AM, Mahesh Jethanandani <[e-mail] <mailto:[e-mail]>> wrote:
> Is there a definition for base64 defined in one of the YANG models? I would prefer to use one if it defined. If not, I was going to define one as
> 
>  typedef base64 {
>     type string {
>       pattern '(([A-Za-z0-9+/]{4})*([A-Za-z0-9+/]{3}=|'
>             + '[A-Za-z0-9+/]{2}==)?){1}';
>     }
>     description
>       "A binary-to-text encoding scheme to represent binary data in
>        an ASCII string format.";
>     reference
>       "RFC 4648, The Base16, Base32, and Base64 Data Encodings";
>   }
> 
> Mahesh Jethanandani
> [e-mail] <mailto:[e-mail]>
> 
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Mahesh Jethanandani
[e-mail]