I was reading a PDF about SHA-3 but on this page I was confronted to a notation that I don't undertand.
It's |Z| on step 9. I thought that was the length of the String Z but but in this case it would be written len(Z). Different notations were explained on this page but |Z| does not figure.
The line in question :
If d≤|Z|, then return Truncd(Z); else continue.
with d a nonnegative integer and Z a string
Thanks
Take a look here https://keccak.team/files/SpongeDuplex.pdf
On page 3, section Sequrity requirements, given such explanation:
"|x| is the bitlength of string x"
Think it should be this value.