Difference between revisions of "83Plus:BCALLs:809F"
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'''BCALL Address:''' 809F | '''BCALL Address:''' 809F | ||
| − | Loads the freeware key (or 0104 key) as a | + | Loads the freeware key (or 0104 key) as a [[83Plus:OS:Big Integers|big integer]] into the [[83Plus:RAM:8000|appData]] area. |
=== Inputs === | === Inputs === | ||
| Line 15: | Line 15: | ||
=== Outputs === | === Outputs === | ||
| − | * Memory at | + | * Memory at [[83Plus:RAM:8000|8000]] contains the freeware key |
=== Destroys === | === Destroys === | ||
Revision as of 10:32, 29 March 2005
Synopsis
Official Name: SetupAppPubKey
Other Name: GetFreewareKey
BCALL Address: 809F
Loads the freeware key (or 0104 key) as a big integer into the appData area.
Inputs
- None
Outputs
- Memory at 8000 contains the freeware key
Destroys
- BC, DE
Comments
The large integer loaded to 8000h is the 512 bit modulus used for decrypting Rabin signatures in Apps. The first byte of the integer is the length of the large integer followed by the integer in little endian.
Example
B_CALL GetFreewareKey
