I got a question with the RFC of HKDF https://tools.ietf.org/html/rfc5869.
There is a maximum specified for the output keying material. The length of the OKM shall be <= 255*HashLen. What does it mean? For example there is a hashfunction with output of 32 byte. Is my maximum OKM then 255*32 = 8160 Byte? Or does it mean, my maximum repetition in the loop is smaller or equal than 8160? So that would mean, that you can generate 8160 (rounds) * 32 (per round output) 261120 Byte output.
I am a little bit confused...thanks for help.