CONFIG_ARM64_CRYPTO is not available for thedefaultarchitecture x86.
Result is shown for architecture arm64

ARM64 Accelerated Cryptographic Algorithms

configname: CONFIG_ARM64_CRYPTO

Linux Kernel Configuration
└─>ARM64 Accelerated Cryptographic Algorithms
In linux kernel since version 3.10 (release Date: 2013-06-30)  
Say Y here to choose from a selection of cryptographic algorithms
implemented using ARM64 specific CPU features or instructions.