ECDSA is a signature algorithm. SA at the end stands for it too: Elliptic Curve Digital Signature Algorithm.
Thanks for the correction, was just trying to differentiate between the ECDSA and SHA 256 that both aren’t an encryption, but the former his, which you just prove is wrong. I misunderstood it because the asymmetric encryption is similar, that is creating two pairs of key with one been an encryption and the other to decrypt it.
It takes a higher computational power to reverse the private key to public key operation or compute private key from signature.
I think it’s a typo mistake here, reversing or decryption of this key pair will actually be public key back to the private which is the encryption