topic Hi ! in Intel® Integrated Performance Primitives

Safety of LZ4 codec in IPP

Francesc_Alted — Thu, 31 Jan 2019 12:23:58 GMT

Hi. I am very pleased to see a considerable boost in performance of the LZ4 codec in IPP. However, I am a bit perplex to not find a safe version for the LZ4 decoding functions, although there are certainly safe versions for encoding, as can be seen at: https://software.intel.com/en-us/ipp-dev-reference-lz4-compression-functions.

My assumption is that the decoding functions are safe by default. Can you confirm?

Thanks in advance

Hi !

Sergey_K_Intel — Fri, 01 Feb 2019 11:42:38 GMT

Hi !

I cal confirm this. LZ4 decoder controls boundaries of source and destination buffers. The decoder will not step beyond limits of source/destination.

Do you have any concerns about this?

Right. So if the decoder

Francesc_Alted — Fri, 01 Feb 2019 11:52:16 GMT

Right. So if the decoder cannot step beyond the limits of destination buffer then all my concerns are gone :)

Thanks!