default or selected kernelversion does not have config value CONFIG_CRYPTO_MORUS640.
Result is shown for kernelversion 6.9.9
MORUS-640 AEAD algorithm
modulename: morus640.ko
configname: CONFIG_CRYPTO_MORUS640
Linux Kernel Configuration
└─>Cryptographic API
└─>MORUS-640 AEAD algorithm
In linux kernel since version 4.2 (release Date: 2015-08-30)
Support for the MORUS-640 dedicated AEAD algorithm.