204 | Managing the Radio
Aprisa SRi User Manual 1.1.0
KEY ENCRYPTION KEY SETTINGS
The Key Encryption Key provides the ability to encrypt the Payload Encryption Key so it can be safely
transmitted over the radio link to remote radios.
The Key Encryption Key Type, Key Encryption Key Size and Key Encryption Key must be the same on all
radios in the network.
Key Encryption Key Type
This parameter sets the Payload Encryption Key Type:
Option
Function
Pass Phrase
Use the Pass Phrase password format for standard security.
Raw Hexadecimal
Use the Raw Hexadecimal key format for better security. It
must comply with the specified encryption key size
e.g. if Encryption Type to AES128, the encryption key must
be 16 bytes (32 chars)
The default setting is Pass Phrase.
Key Encryption Key Size
This parameter sets the Encryption Type to AES128, AES192 or AES256. The default setting is AES128.
The higher the encryption type the better the security.
Key Encryption Key
This parameter sets the Key Encryption Key. This is used to encrypt the payload encryption key.
USB Transaction Status
This parameter shows if a USB flash drive is plugged into the radio host port
.
Option
Function
USB Storage Not Detected A USB flash drive is not plugged into the radio host port.
USB Storage Detected
A USB flash drive is plugged into the radio host port.
Note: 4RF radios only support the FAT32 file system for flash drives. If the flash drive is a different format
such as exFAT or NTFS, you will need to reformat it to FAT32.
Also, some brands of USB flash drives may not work with 4RF radios.