# [NTG-context] SHA calculation

Hans Hagen j.hagen at freedom.nl
Sun Aug 28 12:41:52 CEST 2022

```On 8/28/2022 12:25 PM, 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?
have a look at

l-sha.lua

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