./install_mkl.sh error:

[Santhosh642003]

./install_mkl.sh: Your system is using debian-style package management.

• apt-get update
  Hit:1 https://packages.cloud.google.com/apt gcsfuse-focal InRelease
  Hit:2 https://packages.cloud.google.com/apt cloud-sdk InRelease
  Hit:3 https://packages.cloud.google.com/apt google-fast-socket InRelease
  Hit:4 http://security.ubuntu.com/ubuntu focal-security InRelease
  Hit:5 https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2004/x86_64 InRelease
  Get:6 https://apt.repos.intel.com/mkl all InRelease [4438 B]
  Hit:7 http://archive.ubuntu.com/ubuntu focal InRelease
  Hit:8 http://archive.ubuntu.com/ubuntu focal-updates InRelease
  Hit:9 http://archive.ubuntu.com/ubuntu focal-backports InRelease
  Err:6 https://apt.repos.intel.com/mkl all InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY BAC6F0C353D04109
  Reading package lists... Done
  W: GPG error: https://apt.repos.intel.com/mkl all InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY BAC6F0C353D04109
  E: The repository 'https://apt.repos.intel.com/mkl all InRelease' is not signed.
  N: Updating from such a repository can't be done securely, and is therefore disabled by default.
  N: See apt-secure(8) manpage for repository creation and user configuration details.
  ./install_mkl.sh: MKL package intel-mkl-64bit-2020.0-088 installation FAILED.

Please open an issue with us at https://github.com/kaldi-asr/kaldi/ if you
believe this is a bug.

I'm running this on kaggle notebook. Please help me resolve it

[mgchristensen]

My attempt to install kaldi also failed on Fedora 39. It appears that Intel no longer supports this version of MKL; specifically, the package signing keys are no longer valid. I get these error messages:

`extras/install_mkl.sh: Your system is using fedora-style package management.

• rpm --import https://apt.repos.intel.com/intel-gpg-keys/GPG-PUB-KEY-INTEL-SW-PRODUCTS.PUB
  warning: Certificate 1A8497B11911E097:
  The certificate is expired: The primary key is not live
  Subkey 1A8497B11911E097 is expired: The primary key is not live
  Certificate does not have any usable signing keys
  warning: Certificate ACFA9FC57E6C5DBE:
  The certificate is expired: The primary key is not live
  Subkey ACFA9FC57E6C5DBE is expired: The primary key is not live
  Certificate does not have any usable signing keys
  warning: Certificate 36B9569B3F1A1BC7:
  The certificate is expired: The primary key is not live
  Subkey 36B9569B3F1A1BC7 is expired: The primary key is not live
  Certificate does not have any usable signing keys
  `
  Intel currently supports the newer version, renamed oneAPI MKL, available at this URL:
  https://www.intel.com/content/www/us/en/developer/tools/oneapi/onemkl-download.html.

Intel requires one to establish an account (no charge) in order to download and install this library.

Perhaps the developers will be able to substitute the newer libraqry for the old?