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The Program Freezer Option (5.5) reads programs or whole libraries in source, object, or load module format and calculates a “digital signature” for each program. This process is known as freezing the program. CA Auditor stores the program’s digital signature with other information about the program in the freezer database. Later, you can freeze the program again and CA Auditor determines whether the program changed in the interim by comparing the new data it collects to the data in the freezer database.
You can freeze individual programs or you can freeze all of the programs in a particular file or library, including programs in Endevor, CA Librarian and CA Panvalet libraries. If, at any time, you decide that you no longer need to monitor changes to a particular program, you can delete the entry from the freezer database. The number of files you can freeze is limited only by the size of DBASE1, the CA Auditor database.
The freeze technique has a 99.998 percent chance of detecting any change to a program. This percentage is even greater for source programs, because they generally use only the letters A through Z, the digits 0 through 9, and a few special characters. Load modules use the full 256 character set permitted by the IBM EBCDIC coding scheme. Less than 80 characters of storage are required in the CA Auditor database for each program that is frozen.
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