public static ECKey signatureToKey(byte[] messageHash, String signatureBase64) throws SignatureException {
        final byte[] keyBytes = signatureToKeyBytes(messageHash, signatureBase64);
        return ECKey.fromPublicOnly(keyBytes);
    }
public static ECKey signatureToKey ( byte [ ] messageHash , String signatureBase64 ) throws SignatureException { final byte [ ] keyBytes = signatureToKeyBytes ( messageHash , signatureBase64 ) ; return ECKey . fromPublicOnly ( keyBytes ) ; }
Compute the key that signed the given signature.

@param messageHash
32-byte hash of message
@param signatureBase64
Base-64 encoded signature
@return ECKey
@throws SignatureException
SignatureException