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I am generating a KeyPair for ECC from curve 'secp128r1' using openssl
Steps I followed :
first I generated a private key using the command
openssl ecparam -genkey -name secp128r1 -noout -out private.pem
then i viewed the corresponding public key using the command
openssl ec -in private.pem -text -noout
which showed an output as :
read EC key
Private-Key: (128 bit)
priv:
00:9f:bf:2b:bd:06:86:3a:a1:bc:7c:3e:90:57:40:
f4:bc
pub:
04:04:ce:24:34:d4:cb:f2:58:94:2f:8a:5f:06:d7:
3f:ed:5a:50:ef:fb:cc:b7:49:62:16:62:9e:aa:d5:
30:a8:a5
ASN1 OID: secp128r1
I want explicitly x and y components from the public key generated here, please can anyone suggest the correct way of doing this ?
The above public key is 264 bits long, hence cannot take(/split) it as is
Thanks
441
A public key is the (X,Y) coordinate pair corresponding to that number (the private key) multiplied by the base point (which is a property of the curve used).
An ECC key pair includes a private and public key. The ECC private key is used to generate digital signatures, and the ECC public key is used to verify digital signatures. ICSF generates ECC key pairs using the Elliptic Curve Digital Signature Algorithm (ECDSA).
Pub:
04:04:ce:24:34:d4:cb:f2:58:94:2f:8a:5f:06:d7:
3f:ed:5a:50:ef:fb:cc:b7:49:62:16:62:9e:aa:d5:
30:a8:a5
0x04 indicates uncompressed form
04:ce:24:34:d4:cb:f2:58:94:2f:8a:5f:06:d7:3f:ed
5a:50:ef:fb:cc:b7:49:62:16:62:9e:aa:d5:30:a8:a5
UPD. Found this website that contains further details.
179
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