> On 28 Aug 2022, at 19:07, Pablo Rodriguez via ntg-context <ntg-context@ntg.nl> wrote:
> 
> On 8/28/22 12:25, Hans van der Meer via ntg-context wrote:
>> 
>> With \directlua{context(md5.hex([===[#1]===]))} I can calculate the MD5
>> checksum. 
>> I thought there was another call for the calculation of the SHA
>> checksum, but I could not find it in the documentation or on the context
>> garden. 
>> Where to look?
> 
> Dear dr. van der Meer,
> 
> it is my fault since Hans explained this before (to me).
> 

You absolutely need not to apologize. The answer of Hans Hagen was quite sufficient for me and 
\def\SHA#1{\directlua{tex.sprint(sha2.hash256([===[#1]===]))}}
was all I needed. I know Hans from ages ago and he knows what I need in cases like this.

Alas, wikifying is not my thing.

Hans van der Meer\