The three types of cryptographic algorithms that will be discussed are (Figure 1): â¢. Secret Key Cryptography (SKC): Uses a single key for both Public Key Cryptography (PKC): Uses one key for encryption Hash Functions: Uses a mathematical transformation to irreversibly. encryption and decryption.
âProtest,â in a technical sense, means only the formal declaration drawn up and signed by the notary; yet, as used by commercial men, the word includes all the steps necessary to charge an indorser.
Definition of 'petition'. petition. A petition is a document signed by a lot of people which asks a government or other official group to do a particular thing. We recently presented the government with a petition signed by 4,500 people. A petition is a formal request made to a court of law for some legal action to be taken. His lawyers filed a petition for all charges to be dropped. The court rejected their petition. If you petition someone in authority, you make a formal request to them.