Removing BCCSP defaults usage

This change-set does the following:
1. Removes references to BCCSP defaults opts
like SHAOpts.

This comes in the context of
https://jira.hyperledger.org/browse/FAB-2362

Change-Id: Iddcb5ded78529658f8f4327267468f191a518bc5
Signed-off-by: Angelo De Caro <adc@zurich.ibm.com>

msp/identities.go

@@ -101,7 +101,7 @@ func (id *identity) Verify(msg []byte, sig []byte) error {
 	// mspLogger.Infof("Verifying signature")
 
 	// Compute Hash
-	digest, err := id.msp.bccsp.Hash(msg, &bccsp.SHAOpts{})
+	digest, err := id.msp.bccsp.Hash(msg, &bccsp.SHA256Opts{})
 	if err != nil {
 		return fmt.Errorf("Failed computing digest [%s]", err)
 	}
@@ -170,7 +170,7 @@ func (id *signingidentity) Sign(msg []byte) ([]byte, error) {
 	//mspLogger.Infof("Signing message")
 
 	// Compute Hash
-	digest, err := id.msp.bccsp.Hash(msg, &bccsp.SHAOpts{})
+	digest, err := id.msp.bccsp.Hash(msg, &bccsp.SHA256Opts{})
 	if err != nil {
 		return nil, fmt.Errorf("Failed computing digest [%s]", err)
 	}

protos/utils/txutils.go

@@ -328,7 +328,7 @@ func GetProposalHash2(header *common.Header, ccPropPayl []byte) ([]byte, error)
 		return nil, fmt.Errorf("Nil arguments")
 	}
 
-	hash, err := factory.GetDefault().GetHash(&bccsp.SHAOpts{})
+	hash, err := factory.GetDefault().GetHash(&bccsp.SHA256Opts{})
 	if err != nil {
 		return nil, fmt.Errorf("Failed instantiating hash function [%s]", err)
 	}
@@ -362,7 +362,7 @@ func GetProposalHash1(header *common.Header, ccPropPayl []byte, visibility []byt
 		return nil, err
 	}
 
-	hash2, err := factory.GetDefault().GetHash(&bccsp.SHAOpts{})
+	hash2, err := factory.GetDefault().GetHash(&bccsp.SHA256Opts{})
 	if err != nil {
 		return nil, fmt.Errorf("Failed instantiating hash function [%s]", err)
 	}