Section 8. Operation
405
•
FTPClient()
8.7.3.4 Settings — Passwords
Settings, which are accessible with
DevConfig
(p. 103),
enable the entry of the
following passwords:
•
PPP Password
•
PakBus/TCP Password
•
FTP Password
•
TLS Password (Transport Layer Security (TLS) Enabled)
•
TLS Private Key Password
•
AES-128 Encrypted PakBus Communication Encryption
(p. 405)
Key
See the section
Status, Settings, and DTI (Registers
(p. 107))
for more information.
8.7.4 File Encryption
Encryption is available for CRBasic program files and provides a means of
securing proprietary code or making a program tamper resistant. .CR<X> files,
or files specified by the
Include()
instruction, can be encrypted. The CR800
decrypts program files on the fly. While other file types can be encrypted, no
tool is provided for decryption.
The
CRBasic Editor
encryption facility (
Menus
|
File
|
Save and Encrypt
)
creates an encrypted copy of the original file in PC memory. The encrypted file
is named after the original, but the name is appended with "_enc". The original
file remains intact. The
FileEncrypt()
instruction encrypts files already in
CR800 memory. The encrypted file overwrites and takes the name of the
original. The
Encryption()
instruction encrypts the contents of a file with
AES128 encryption, and decrypts a file created with encryption provide the
correct encryption key is entered.
One use of file encryption may be to secure proprietary code but make it available
for copying.
8.7.5 Communication Encryption
PakBus is the CR800 root communication protocol. By encrypting certain
portions of PakBus communications, a high level of security is achieved.
8.7.6 Hiding Files
The option to hide CRBasic program files provides a means, apart from or in
conjunction with file encryption, of securing proprietary code, preventing it from
Summary of Contents for CR800 Series
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Page 446: ...Section 8 Operation 446 8 11 2 Data Display FIGURE 100 CR1000KD Displaying Data ...
Page 448: ...Section 8 Operation 448 FIGURE 102 CR1000KD Real Time Custom ...
Page 449: ...Section 8 Operation 449 8 11 2 3 Final Storage Data FIGURE 103 CR1000KD Final Storage Data ...
Page 450: ...Section 8 Operation 450 8 11 3 Run Stop Program FIGURE 104 CR1000KD Run Stop Program ...
Page 452: ...Section 8 Operation 452 FIGURE 106 CR1000KD File Edit ...
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