A digital signature scheme typically consists of three algorithms:
- A key generation algorithm that selects a private key uniformly at random from a set of possible private keys. The algorithm outputs the private key and a corresponding public key.
- A signing algorithm that, given a message and a private key, produces a signature.
- A signature verifying algorithm that, given a message, public key and a signature, either accepts or rejects the message's claim to authenticity.
When is public / private key pair are used?
Answer : used in two ways
1 Public key encryption :
message encrypted with a recipient's public key cannot be decrypted by anyone except a possessor of the matching private key. Used for Confidentiality
Asymmetric key algorithms : uses different(but Mathematically Related ) keys for Encryption and Decryption
Public encryption Key and Private Decryption key
2 Digital Signature: message signed with a sender's private key can be verified by anyone who has access to the sender's public key. Used to check for Authenticity of Message
What is EAP protocol Packet content?
What is PKI?
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