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11. Endura Decryption Utility
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Running EDU to Decrypt Data
1.
At a system prompt, enter the command, making sure:
• the input drive has loaded the write-protected tape with encrypted data
• the output drive has an empty tape loaded
In this example, only one key is required. This example assumes you have copied the
EDU binary to /root/decrypt/edufile1.3.3—enter the command at a system prompt:
/root/decrypt/edufile1.3.3 -i /dev/nst1- o/dev/nst2 -n1
then press
enter
.
2.
The system prompt displays along with a request for key’s password. Enter it, then
press
Enter
. The system prompts for the key: enter the full path and file name of the
key, then press
Enter
.
3.
The system begins decrypting data and writing it to the empty tape. Messages display
as the data is decrypted. The system indicates when the decryption is complete.
4.
Remove the tapes. Repeat starting at step 1 for each tape storing data that is to be
decrypted.
Restoring Data
Use the backup software to restore the data. Note that, if you are using a library to restore
data, you may want to make sure the tape with the decrypted data has the same bar code as
the tape on which the encrypted data was stored.
The backup software may require the tape to have its original bar code; otherwise, the data
may not be restored. This requires moving the label from one tape to the other, or creating a
duplicate of the original bar code label and putting it on the tape storing the decrypted data.