How can I create a Clear key HLS using Shaka-Packager

Hello, I'm try to create a working Clear-key HLS stream using Shaka-packager.

Shaka packager support only SAMPLE-AES. when implemented, it's looks like the resulting stream is no't playable in Safary browser.

This is the example M3U8 file starts:

#EXTM3U
#EXT-X-VERSION:6
## Generated with https://github.com/google/shaka-packager version v2.6.1-634af65-release
#EXT-X-TARGETDURATION:13
#EXT-X-PLAYLIST-TYPE:VOD
#EXT-X-MAP:URI="audio_und_2c_128k_aac_init.mp4"
#EXT-X-KEY:METHOD=SAMPLE-AES,URI="https://www.httpstest.com:771/key.key",IV=0x00000000000000000000000000000000,KEYFORMAT="identity"
#EXTINF:10.008,
audio_und_2c_128k_aac_1.mp4
#EXTINF:10.008,
audio_und_2c_128k_aac_2.mp4
#EXTINF:9.985,
audio_und_2c_128k_aac_3.mp4
#EXTINF:10.008,
audio_und_2c_128k_aac_4.mp4
#EXTINF:10.008,
audio_und_2c_128k_aac_5.mp4
#EXTINF:9.985,
audio_und_2c_128k_aac_6.mp4
#EXTINF:0.093,
audio_und_2c_128k_aac_7.mp4
#EXT-X-ENDLIST

I'm looking for: A. a working example of SAMPLE-AES Clear key encrypted HLS (so I will be able to learn from it how it should be defined for IOS) B. help on how to create a clear key working HLS stream for IOS/macOS (Safari)