Confidentiality is not provided in the encryption process, irrespective of the encryption technique used. All the encryption techniques mentioned above send the data unencrypted...
Confidentiality is the concept of hiding or scrambling your data so that only the intended recipient has access. This is typically accomplished by some means of Encryption.
Confidentiality using Symmetric Encryption Traditionally symmetric encryption is used to provide message confidentiality.

Furthermore, visual representations like the one above help us fully grasp the concept of Encryption For Confidentiality.
Encryption for Confidentiality.Volume encryption secures entire storage resources, typically implemented through software solutions that encrypt all data within a designated volume.
Lets now discuss some of the popular methods for securing file transfer confidentiality. Encryption is by far the one most closely associated with confidentiality, so lets start with that.

Furthermore, visual representations like the one above help us fully grasp the concept of Encryption For Confidentiality.
Confidentiality: Protect sensitive data through encryption and access controlsIntegrity: Ensure data accuracy through checksums, signatures, and audit trails