Pre-Grant Publication Number: 20070160202
Filing Date: January 11, 2020
Inventors: Andrew Wilt, Michael Kelly
Assignee: International Business Machines Corporation
Current U.S. Classification: 380, 380/030000
View Prior Art for Claim 00004
The signal bearing medium of Claim 1,
wherein the verification text includes a first verification segment, a second verification segment, a third verification segment and a fourth verification segment in sequential order;
wherein the first verification segment includes an encryption of a first random text segment with the user data key prior to the encryption of the user data key with the encryption key;
wherein the second verification segment includes an encryption of a first known text segment with the user data key prior to the encryption of the user data key with the encryption key;
wherein the third verification segment includes an encryption of a second known text segment with the user data key prior to the encryption of the user data key with the encryption key; and
wherein the fourth verification segment includes an encryption of a second random text segment with the user data key prior to the encryption of the user data key with the encryption key.
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