IBM Aspera HST User Manual

| Watch Folders and the Aspera Watch Service | 188
Field Description Default
Cipher Values
Value Description Support
AES128
AES192
AES256
Use the GCM or CFB
encryption mode,
depending on the server
configuration and version
(see cipher negotiation
matrix).
All client and server
versions.
AES128CFB
AES192CFB
AES256CFB
Use the CFB encryption
mode.
Clients version 3.9.0
and newer, all server
versions.
AES128GCM
AES192GCM
AES256GCM
Use the GCM encryption
mode.
Clients and servers
version 3.9.0 and newer.
NONE Do not encrypt data in
transit. Aspera strongly
recommends against
using this setting.
All client and server
versions.
Client-Server Cipher Negotiation
The following table shows which encryption mode is used
depending on the server and client versions and settings:
Server,
v3.9.0+
AES-XXX-
GCM
Server,
v3.9.0+
AES-XXX-
CFB
Server,
v3.9.0+
AES-XXX
Server,
v3.8.1 or
older
AES-XXX
Client,
v3.9.0+
AES-XXX-
GCM
GCM server
refuses
transfer
GCM server
refuses
transfer
Client,
v3.9.0+
AES-XXX-
CFB
server
refuses
transfer
CFB CFB CFB
Client,
v3.9.0+
AES-XXX
GCM CFB CFB CFB
Client,
v3.8.1 or
older
AES-XXX
server
refuses
transfer
CFB CFB CFB

IBM Aspera HST Specifications

General

Brand	IBM
Model	Aspera HST
Category	Server
Language	English