Imports github.com/hyperledger/fabric/common/util github.com/hyperledger/fabric/bccsp/utils github.com/hyperledger/fabric-protos-go/msp github.com/hyperledger/fabric/protoutil github.com/pkg/errors Standard library imports encoding/pem crypto crypto/ecdsa encoding/asn1 crypto/rand crypto/x509 io/ioutil math/big