Verifying The Integrity Of Web Contents With Md5 Files; Certificate Files - Epson TM-U220-i Technical Reference Manual

Verifying the integrity of Web contents with md5 files

You can verify the integrity of auto updating Web contents with md5 files. When this product
acquires a Web content file, an md5 file is downloaded to the Web server, if available. The md5 value
of the md5 file is compared to the md5 value calculated from the auto updating file and, if the values
match, the auto updating file is unpacked and extracted. If these values are inconsistent, the file is
not unpacked and extracted.
Preparation
• Create an md5 file with the same file name as the auto updating file. Only write the md5 value of
the auto updating file (zip) in the file.
• Save the md5 file to the same folder as the auto updating file.
Check Verification
You can check the results of running an automatic update from [Information] - [Web Contents] -
[Status of Last Automatic Update] in the EPSON TMNet WebConfig.
For detail, refer to "Information - Web Contents" on page

Certificate files

You can automatically update Server authentication certificates and SSL authentication certificates
using the Web contents automatic update function.
You can download and use Server authentication certificates for this product. For detail, refer to
"System Settings - Security - SSL" on page
Make sure to update certificate files, including certificates in use.
Make sure to replace certificate files by deleting existing certificate files and saving new
certificate files. You will be unable to connect if certificate files currently in use are not included.
Make sure to include certificates currently in use in the auto updating file each time.
File Specifications
Save certificate files to the following folders.
• Server authentication certificate:
• SSL authentication certificate:
Use the following file names for SSL authentication certificate files.
Type
Certificate file
Private key file
Certificate chain file
86.
98.
ssltrustedcerts
sslsevercerts
File name
SeverCrt.crt
ServerKey.key
ChanCrt.crt
Chapter 2 Setup
2
77