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Ingenico 6500 User’s Guide 101
3. The secure certificate file is used to validate the signature of code files and data files as
soon as they are installed. The secure certificate can also be accessed as needed
throughout the download procedure.
4. If the download is successful, the secure certificate file will be erased from a temporary
location and updated into SSA’s memory.
10.4 Secure Certificate
The secure certificate is a text file that contains security information for a download
package.
Once the text file is constructed, it must be passed through a securing utility which
generates the MAC of the certificate. The utility will also generate MACs for all of the
software components described in the certificate.
The secure certificate contains all the security information necessary for SSA to determine
if the downloaded application is eligible to upgrade.
The secure certificate is also a descriptor of all the software components that are
necessary to make up a download session. In effect, the secure certificate represents an
application descriptor file that contains secured fingerprints for each of the software
components representing the application.
The following is an example of a secure certificate text file.
MAC=12345678
[VisaPEDMode]
1
[Appl]
MAC=12345678 applname dstfilename.ext authmethod encrypt
srcfilename.ext
[SecFiles]
MAC=12345678 applname dstfilename.ext class authmethod encrypt
existence srcfilename.ext
MAC=12345678 applname dstfilename.ext class authmethod encrypt
existence srcfilename.ext
[NonSecFiles]
applname filename.ext class existence
applname filename.ext class existence
[DeleteAppl]
applname codefilename1
applname codefilename2
[DeleteFiles]
applname filename.ext class
applname filename.ext class
[DeleteWholeApp]
applname