Non-repudiation
A digital signature is the security device used to verify the identity of the sender in an email. It employs cryptographic techniques to ensure that the message has not been altered and confirms the sender's identity by using their private key to sign the email. The recipient can then use the sender's public key to verify the signature, ensuring the integrity and authenticity of the message.
Its called "phishing" (said as fishing). It the process where thousands of the same email are sent requesting security data from you in an attempt to defruad you or steal identity.
Yes.
Cryptography provides security services such as confidentiality (encryption to hide information), integrity (ensuring data hasn't been tampered with), authentication (verifying the identity of parties), and non-repudiation (ensuring a sender cannot deny sending a message).
Once you view the security message, it should go away.
When receiving a text message from an unknown sender asking "Who is this?", it is best to politely ask for more information or context before revealing your identity. This can help ensure your privacy and safety.
hash function is technique used in message authentication it is attached to the message for security purpose
Security against the devastation caused by bank failures was not a part of the security program announced by President Roosevelt in his state of the union message.
In cryptography the message is encrypted by the sender and decrypted by the reciver. so, it ensures message security.
Non-repudiation
Of course not.
Answer 1 - Message, "Battery no charge"That tells us that there is some defect in the charging circuit or battery that is preventing the battery frome being charged.