DHEBP (DERO Homomorphic Encryption Blockchain Protocol)

DHEBP alpha code to demonstrate FHE blockchain transactions.

Transaction Details:

Each transaction consists of 2 parts:

1. Statement which contains ring members keys, commitments, encrypted balances ( this grows linear ) basicaly 4 curve points per ring member.
2. Proof which grows log in ring members for Eg :
   8 ring size proof is only 1997 bytes
   512 ring size proof is only 3965 bytes

Ring Size, Tx Size data

Ring size, tx size (fixed) in bytes irrespective of balance     
2      1669 bytes   (    328 byte statement, 1341 bytes proof )  
4      2261 bytes   (    592 byte statement, 1669 bytes proof )  
8      3117 bytes   (   1120 byte statement, 1997 bytes proof )  
16     4501 bytes   (   2176 byte statement, 2325 bytes proof )  
32     6941 bytes   (   4288 byte statement, 2653 bytes proof )  
64    11493 bytes   (   8512 byte statement, 2981 bytes proof )  
128   20269 bytes   (  16960 byte statement, 3309 bytes proof ) 
256   37493 bytes   (  33856 byte statement, 3637 bytes proof )  
512   71613 bytes   (  67648 byte statement, 3965 bytes proof )

Tx size data after DHEBP improvements

Ring Size	Old Tx size (fixed) in bytes irrespective of balance	New TX size
2	1669 bytes ( 328 byte statement, 1341 bytes proof )	1553 bytes
4	2261 bytes ( 592 byte statement, 1669 bytes proof )	2013 bytes
8	3117 bytes ( 1120 byte statement, 1997 bytes proof )	2605 bytes
16	4501 bytes ( 2176 byte statement, 2325 bytes proof )	3461 bytes
32	6941 bytes ( 4288 byte statement, 2653 bytes proof )	4825 bytes
64	11493 bytes ( 8512 byte statement, 2981 bytes proof )	7285 bytes
128	20269 bytes ( 16960 byte statement, 3309 bytes proof )	11839 bytes
512	71613 bytes ( 67648 byte statement, 3965 bytes proof )	~35000 bytes

Build

1. Switch to directory containing this Readme.md file
2. export GOPATH=pwd
3. go run *.go
   

Note: Developed and tested on linux go version 1.12.7

Output Sample

Creating Transaction
I0706 16:05:28.258801   93136 main.go:101] Transferring 10 from sender to receiver (ring size 8) tx size 3117 bytes 
I0706 16:05:28.258810   93136 main.go:102] Total tx size 3117 bytes   (  1120 byte statement, 1997 bytes proof )  
I0706 16:05:28.341387   93136 main.go:107] Transfer successful
I0706 16:05:28.343528   93136 main.go:116]       Sender Balance        150 -        10 =       140
I0706 16:05:28.343533   93136 main.go:117]     Receiver Balance          0 +        10 =        10
I0706 16:05:28.345662   93136 main.go:98] 

Creating Transaction
I0706 16:05:28.568605   93136 main.go:101] Transferring 90 from sender to receiver (ring size 16) tx size 4501 bytes 
I0706 16:05:28.568614   93136 main.go:102] Total tx size 4501 bytes   (  2176 byte statement, 2325 bytes proof )  
I0706 16:05:28.680647   93136 main.go:107] Transfer successful
I0706 16:05:28.682788   93136 main.go:116]       Sender Balance        140 -        90 =        50
I0706 16:05:28.682792   93136 main.go:117]     Receiver Balance         10 +        90 =       100
I0706 16:05:28.682796   93136 main.go:74] 
                        Successful