Module hex 

Hex string conversion utilities

Functions

bytes_to_hex_string

Convert bytes to a hex string with “0x” prefix

hex_string_to_bytes

Convert a hex string to a byte array of specified length

hex_string_to_hash_bytes

Convert a hex string to a 32-byte array (for hash values)

hex_string_to_u64_bytes

Convert a hex string to an 8-byte array (for u64 values)