EDGE Toolkit Technical Guideline

Elliptic Curve German Digital Signature Algorithm

EC-GDSA Key Pair Generation

edgetk -pkey keygen -algorithm ecgdsa -curve brainpoolp256r1 -prv "Private.pem" -pass nil -pub "Public.pem"

Private key saved to: albanese.atwebpages.com/directrix/Private.pem
Public key saved to: albanese.atwebpages.com/directrix/Public.pem
Fingerprint: W1vJ+inNFqH6ZiioBTFcH5bDH8hlisGgdVzYcpnzHcM=
ECGDSA (256-bit)
+-----------------+
|      =&^^^^^^^^^|
|     ..BE^^^^^^^^|
|      o.o+@^&X^#/|
|     .  .O.=oOo*=|
|      . S *   = .|
|       . *   . . |
|                 |
|                 |
|                 |
+-----------------+

Private Key Details

edgetk -pkey text -key "Private.pem"

-----BEGIN ECGDSA PRIVATE KEY-----
MIGIAgEAMBQGCCskAwMCBQIBBggrJAMDAgEBBwRtMGsCAQEEIDEjaYGsdR2unu6P
9YIFSP/13NK/dFrhf+Mouvqp6vuCoUQDQgAEWkYoW7V7CAkolo3WTtU7Oz+UjlDY
rN7xWTQzoXPAytY4JdXIAatP032B+1cFRG7JDoAmF/1pLNPI0idQPZO8nQ==
-----END ECGDSA PRIVATE KEY-----
Private-Key: (256-bit)
priv:
    31:23:69:81:ac:75:1d:ae:9e:ee:8f:f5:82:05:48:
    ff:f5:dc:d2:bf:74:5a:e1:7f:e3:28:ba:fa:a9:ea:
    fb:82
pub:
    04:5a:46:28:5b:b5:7b:08:09:28:96:8d:d6:4e:d5:
    3b:3b:3f:94:8e:50:d8:ac:de:f1:59:34:33:a1:73:
    c0:ca:d6:38:25:d5:c8:01:ab:4f:d3:7d:81:fb:57:
    05:44:6e:c9:0e:80:26:17:fd:69:2c:d3:c8:d2:27:
    50:3d:93:bc:9d
Curve: brainpoolP256r1

KeyID: 36d50f7d5a030e949e6171a5aecb4e970e7608ee

Public Key Details

edgetk -pkey text -key "Public.pem"

-----BEGIN PUBLIC KEY-----
MFowFAYIKyQDAwIFAgEGCCskAwMCAQEHA0IABFpGKFu1ewgJKJaN1k7VOzs/lI5Q
2Kze8Vk0M6FzwMrWOCXVyAGrT9N9gftXBURuyQ6AJhf9aSzTyNInUD2TvJ0=
-----END PUBLIC KEY-----
Public-Key: (256-bit)
pub.X:
    5a:46:28:5b:b5:7b:08:09:28:96:8d:d6:4e:d5:3b:
    3b:3f:94:8e:50:d8:ac:de:f1:59:34:33:a1:73:c0:
    ca:d6
pub.Y:
    38:25:d5:c8:01:ab:4f:d3:7d:81:fb:57:05:44:6e:
    c9:0e:80:26:17:fd:69:2c:d3:c8:d2:27:50:3d:93:
    bc:9d
pub:
    04:5a:46:28:5b:b5:7b:08:09:28:96:8d:d6:4e:d5:
    3b:3b:3f:94:8e:50:d8:ac:de:f1:59:34:33:a1:73:
    c0:ca:d6:38:25:d5:c8:01:ab:4f:d3:7d:81:fb:57:
    05:44:6e:c9:0e:80:26:17:fd:69:2c:d3:c8:d2:27:
    50:3d:93:bc:9d
Curve: brainpoolP256r1

Digital Signature Generation

edgetk -pkey sign -algorithm ecgdsa -md esch256 -key "Private.pem" "test.txt" > sign.txt

304402205499d913d143ce4be0b5b02c973ecc2e2f12a0f1ad365d4426c372cb7aeb63e50220047298259c68e2359bb36a134b1f0f01c8125bb2fc077ebfbefd381ebcb76ba2

Digital Signature Verification

edgetk -pkey verify -algorithm ecgdsa -md esch256 -key "Public.pem" -signature "304402205499d913d143ce4be0b5b02c973ecc2e2f12a0f1ad365d4426c372cb7aeb63e50220047298259c68e2359bb36a134b1f0f01c8125bb2fc077ebfbefd381ebcb76ba2" "test.txt"

Verified: true