I tried to generate pair key for ecdsa using openssl.

Why the public key length is 65 bytes and not 64?

**Create private key**

openssl ecparam -genkey -name secp256r1 -noout -out private.pem

**Generate public key**

openssl ec -in private.pem -text -noout

read EC key

Private-Key: (256 bit)

priv: 13:10:bc:9c:a8:3d:8b:fa:91:b2:a4:f8:e5:d1:5f: 53:56:eb:16:91:86:aa:6b:c5:16:8b:16:e9:04:4e: 03:a9

pub: 04:51:02:22:75:dd:3d:25:ee:b6:aa:a5:c6:c6:27: 5c:07:c5:e6:e9:75:40:4a:b3:e4:cd:22:e5:cc:9a: bd:1b:14:0e:53:6a:57:9a:26:98:d2:2f:6b:a4:9b: a4:47:fe:ab:76:99:59:26:39:ac:2b:2e:93:b3:ef: f0:8b:f5:3b:86

ASN1 OID: prime256v1

NIST CURVE: P-256