| Digital Signature Scheme with Message Recovery Using Knapsack-based ECC Recent countries visiting this post |  |
 | 12 | United States |
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| Digital Signature Scheme with Message Recovery Using Knapsack-based ECC Recent countries visiting this post | |
| 12 | United States |
| 4 | India |
| 1 | |
| 1 | China |
| 1 | Japan |
| 1 | Iran, Islamic Republic of |
| 1 | Russian Federation |