Role of Claims based Authentication in Federated Security -- 2
Symmetric Encryption: As the diagram shows the same key is used for encrypting and decrypting the message
Asymmetric Encryption:As the diagram shows, here 2 keys are used for encrypting and decrypting. Either of the 2 can be used for encrypting and decrypting and the purpose drives which is used when. When the criteria is confidentiality like in the case of https communication, public key is used for encryption and private key is used for decryption. Inc ase where Data Integrity, Non reudiation is the criteria, private key is used for encryption and the public key is used for decryption as in the case of Digital Signatures.
Digital Signature (DS): Before I mention DS, let me define hashing. Hashing is a one way mathematical function which generates a standard size one way hash also called check sum. This is encrypted using the private key of the party to generate a digital signature.
