To create a hardware algorithm execute command Edit | Add field.
In Add field dialog box that will appear select Algorithm field type, specify the name and the type of the new algorithm as well as the size of its determinant.
Add new algorithm dialog box:
Algorithm type
Select an algorithm type from the dropdown list.
The type of algorithm being created depends on the dongle mask:
| Mask type | Algorithm type |
|---|---|
| Guardant Time/ Time Net |
|
| Guardant Sign/ Sign Net | |
| Guardant Code/ Code Time |
|
| Guardant Stealth III / Net III |
|
| Guardant Stealth II / Net II |
|
| Guardant Stealth / Net | Unidirectional algorithm Stealth I and its modifications: Fast, Random, AutoProtect |
| Guardant Fidus | - |
Size of determinant
Determinant – the main part of hardware algorithm descriptor, which defines the specific type of encryption function. Algorithm determinants in Guardant dongles have fixed even length, Using GrdUtil.exe you can set the size of determinant and edit its type.
In order to select (or set – for unidirectional algorithm Stealth) the size of determinant, use the combined field-list.
The size of determinant depends on the algorithm type:
| Algorithm type | Size of determinant, bytes |
|---|---|
| Symmetric encryption: AES128 | 16 |
| Digital signature generation: ECC160 | 20 |
| Symmetric encryption: GSII64 | 16 or 32 |
| Hash function generation: SHA256 | - |
| Hash function generation: HASH64 | 16 or 32 |
| Random numbers generation: RND64 | 16 or 32 |
| Unidirectional algorithm Stealth I – obsolete | 4 – 200 (optimum - 32) |
After setting the type and size of determinant of a new algorithm you need to edit its properties. Click [Next] in the lower part of the dialog box to move to the next page.