Yes. Decrypted or plain text - yet to be encrypted - messages need to be kept securely before they are encrypted and transmitted.
In general it isn't very correct at all. The only time physical security would be needed in cryptography is when you need to guard a private key.
While the term security arises the cryptography or cryptology always comes at the top of the list on the topic of security of any system, device and whatever else. The technique of transforming and storing information or in the ease of communication between two parties cryptography helps to connect, store and transform with security.
One might need cryptography in any situation which warrants privacy or secrecy to protect data, trade secrets, or embarrassing situations. Examples include business transactions, ecommerce, extramarital affairs, political campaigns, and government actions.
Cryptology is the study of codes and ciphers while cryptography is the creating of codes and ciphers.
Hacking or Reverse engineering is a method to understand the code of the certain network restriction which are implied while you are connected to the other computer and then by pass them using your own segments of code. You just reverse engineer the already existing security and encryption code. Learn more about encryption and Cryptography and then implementation of that in Security on internet.
The flexibility of public key cryptography is in the fact that the key has two parts one is public and other is kept secret. That is encryption is done using public key while decryption is done using secret key. Thus message cannot be decrypted by unwanted person.
Cryptography is basically the process of hiding information in order to protect the sensitive information, data or message from unknown attacks for any reasons. Cryptography actually consists of two terms encryption and decryption. The process in which message is ciphered or encrypted is known as encryption and the process in which message is deciphered at recipients end is known as decryption. And this whole process is known as cryptography. Public keys and private keys are used in the process of cryptography. Cryptography can be seen as symmetric and asymmetric. In symmetric cryptography same key is used for both encryption and decryption while in asymmetric different keys are used for both encryption and decryption. Today Cryptography is used in various fields like ATM, e-banking, IT security, Maths etc.
To compare cryptography and cryptology we must understand that they are about coding and ciphers. To contrast them, we must understand that cryptography involves the creation of codes and ciphers while cryptology is the study of them.
communication using computers is digital communication while that of physical or written channel is analog communication.
a substanceis pure it can be broken down using physical processes while a mixture can be separated using physical processes and it is a combination of substances.
Physical communication is where you talk to someone using hand signals or some physical contact to describe your conversation. For example, using American Sign Language (ASL) while communicating with a deaf person.
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Security refers to measures implemented to protect against potential threats, such as physical access controls or data encryption. A security guard, on the other hand, is an individual responsible for enforcing security measures on-site, such as monitoring premises, conducting patrols, or responding to incidents. Security is the overall concept, while a security guard is one specific role within the security framework.