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Inputs
Sign
Verify
Sign Algorithm
Custom
NIST P-256
NIST P-384
NIST P-521
Hash Algorithm
None
SHA-1
SHA-224
SHA-256
SHA-384
SHA-512
Curve
An equation for an elliptic curve
y
2
=
x
2
+
a
x
+
b
Modulus(
p
)
The integer order of the subgroup of elliptic curve points
Base Point(
G
)
The base point which generates all other elliptic curve points in the subgroup
(
Base Point X
,
Base Point Y
)
Order(
n
)
The integer order of the subgroup of elliptic curve points
Private Key(
d
A
)
The private key of the signer
Random Seed(
k
)
The private key of the signer
Message(
m
)
The message to sign
Submit
Intermediate Values
e
=
H
A
S
H
(
m
)
=
z
=
T
R
U
N
C
A
T
E
(
e
,
B
I
T
L
E
N
(
n
)
)
=
(
x
,
y
)
=
k
×
G
mod
p
= (, )
r
=
x
mod
n
=
s
=
k
-1
(
z
+
r
⋅
d
A
)
mod
n
=