Cryptography is the science behind securing information and communication
techniques using math concepts and rules. It’s what’s behind the “security net”
of sending our information over the internet. At its most basic form it works
by changing your plain text from your computer to another by using a key to
change that up. That way if the message is intercepted its not readable. But
the devices with the key needed to encode / decode the message can.
Encryption is needed because It is what allows us to more securely share our
information with one another. Every system will have some kind of
vulnerability that someone can exploit to gain access to information. However,
having that encrypted (changed into cipher text) makes it more difficult for
them to actually have that info. Its hidden unless they have that key.You know
when you are accessing a site and you go to enter your credit card
information and how there is that lock letting you know that the page is
encrypted. Its letting you know that once you have submitted that information
its encrypted. It eases the mind letting you know that you are safe (for the
most part). It stores that data on servers that have been checked for
vulnerabilities, and that data is used for what you intended it for. Cryptography
is the science or study and implementation of securing data that needs to be
protected. there are many uses for cryptography. cryptography is encrypting data
so that only the person or people who need to see the information do.
cryptography is a two step process of encryption and decryption with a safe
and secure password. cryptography basically scrambles or cover up the message
or whatever you are encrypting so that only the password chosen can and will
decrypt it . we use cryptography more than we even realize on a daily basis
cryptography is stronger than just a normal password because it is more
indepth that just putting a plain old password on something. it is the next
level of security it makes sure that only a person with the correct password
or passwords can open and see what is hidden. we use cryptography for things
like ATM, our computers, files that we want to protect from others eyes,
internet activity and many other uses. Cryptography is technically a form of
encryption, and has evolved so much over the years. Modern encryption is
something we depend more than often, and we don't even realize it. In fact,
when we use our cell phones, debit card purchases, or even get cash from the
ATM we are using it. Modern encryption process involves two different keys
that locks and unlocks messages. It has been determine that the strength of the
encryption is proportional to the size of the key, however it can outgrow the
resources needed for computation. The fact of the matter is modern encryption
is critical for our everyday life especially for our securing our sensitive
information we don't want anyone else getting a hold to. I never really
realized the importance of securing data until just recently this when year when
someone stole my identification. So from then on I am very careful with
certain things like not using public Wi-Fi, disabling my google assistant on my
phone. In addition I got rid of my Alexa because I learned that there are
vulnerabilities in those things, so yes I have been very careful. Cryptography
was developed originally to protect data in motion across a network.
Cryptography consists of two steps: encryption and decryption, Encryption will
encrypt a plaintext and turn it into a cyphertext. Decryption will do the
opposite. Decryption will decrypt a cyphertext into a plaintext. One method of
cryptography used is end to end crypto. This means the message being sent
has been encrypted by the sender.The receiver should decrypt the message.
Cryptography is an important tool that some people do not understand. Me,
being one of those people. Now I understand the use of keys. Crptography is
a preventive tool that should be part of any policies or guidelines. Any
employee of a businees should have proper training for cryptography. I believe
humans can make the worse mistakes, intentionally or unintentionally. Therefore
proper training and guidelines should be a necessity for a business using a
network. Confidentiality, nonrepudiation, and integrity is the core of
cryptography. Confidentiality, nonrepudiation, and integrity are all used to protect
data. It is very important for a business using a network to choose employees
wisely. Humans can be the biggest error. Cryptography is the science of
encryption. We all know that we utilize encryption to "secure" our
communications, but there are plenty of people that don't fully understand the
importance, nor how much they actually use encryption on a daily basis.We are
lucky to have modern security engrained with our modern technology. Despite
acknowledging the potential for flaws, holes, exploits, and other general work-
arounds, most of our general consumer technology is at least somewhat secure
by default. It doesn't take much to get past some default settings, but you still
have to know what you're doing and looking at.Encryption is taking data and
"scrambling" the plaintext information, be it password, E-mail, general keyboard
keystrokes, etc., for access control & security reasons. Stored, "at-rest" data is
encrypted from external bad actors attempting illegitimate content access.
Likewise, sent or requested "in-transmission" data, such as a visited website or
a sent E-mail, is encrypted or scrambled against interception or other "man-in-
the-middle" attacks. The best part is that if the proper end-point systems are in-
place, most- if not all- of this encoding and decoding for the 'encryption'
process occurs automatically with no intervention and minimal added processing
time. Cryptography, explains as securing data to get it from one destination to
the next. When I think about it there are so many forms of this functionality
that it hard to speak about them all but if I describe this in a simple way, I
would have to think of something like dropbox or a secure FTP file. This is
especially important when you think about bank files, PII, or just confidential
documents that can affect the outcome of future projects plans or to have
someone get to the market with a creation before you. When it comes to
getting this information to the intended party your programming code that will
allow the system to deliver the document completely without threat attackers
becoming the middle man to intercept the communications. This can be ensure
with the ACK returned with the id or information that make the document
secured. There also information that may go thru external communication from
one end of the company to another area located externally of the company that
ties into how packets are transferred and delivered in pieces then created again
once fully delivered.. Some these ways of stopping attackers is to use different
router when the communication is forward. Cryptography is a plain-text message
is encoded before being sent. Encryption is a means of securing a message
prior-to, as well as during transmission to its intended recipient. When a
message is encrypted, each character is exchanged (misrepresented) with another
character, rendering the message unreadable or non-sensical. This prevents anyone
other than the intended recipient from being able to read the message. On the
receiving end, the intended recipient will need to have the key to unencrypt
the message before being able to read its content. In this current time,
computers have built-in encryption and when electronic messages are sent, the
computer of the receiver is able to decrypt the message for reading. There are
different levels of encryption, each stronger than the previous, and their purpose
is to make the message harder to crack should it fall into the wrong hands.
We still have to be cautious, as there are programs and software out there
specifically designed to beat or get around encryption to decipher messages. As
technology evolves, though, for every step we take to protect our data, there
will be someone out there who will work to develop a means for thwarting
our protections to get at our important data and information. Cryptography is
the practice of securing communications through encryption, then decryption
methods between the sender and the intended recipient amongst any unwanted
parties or adversaries . While cryptology is the study of these techniques. Fun
Fact: The term is derived from the Greek word Krytos; which means
hidden.Encryption is often used in electronic money transactions. To protect
users, financial institutions convert transaction data such as account numbers,
transaction amounts and account passwords. These types of sensitive information
travel through the internet regularly. This is just one example of the necessary
applications of Cryptology. Although cryptography has been around for millennia,
We no longer replace letters in a message with other characters but we’ve
doubled down and scrambled the order of the message in a cryptic nature. In
theory, only the holder of the decryption key can view the message.
Cryptography is the practice and study of techniques for secure communication
in the presence of third parties called adversaries. Cryptography is use daily
such as ATM machine, Pay TV, email file storage, secure web browsing and
so many.
There are three types of cryptography Symmetric-key, public-key, and hash
function. There are two categories of Cryptography, Symmetric key Cryptography
and Public-Key (Asymmetric key Cryptography).
Modern encryption is the key to advanced computer and communication
security. This stream of cryptography is completely based on the ideas of
mathematics such as number theory and computational complexity theory, as
well as concepts of probability. Encryption can also be used to verify the
integrity of a file or piece of software. Symmetric key encryption technique
uses a straightforward method of encryption and Public-Key Encryption is
another encryption method that uses two keys: a new and sophisticated
encryption technique. The encryption is used to protect data whether personal or
company. As in the lab assignment show us how to create authorize access to
other user but can set it up to give access to read or write to a user or
unauthorize the user to write but to only read also create a text-document with
limited authorization. cryptography is very broaden and it starts with the basics
of protecting information or communications and only one individual(hopefully)
has the key. That key is the actual key to reading the message, data, etc. The
important thing is that the message or information of whatever kind will be
'scrambled' via algorithms and this can be done on different layers and can be
done in different ways. One of the more common ways this is done and
shown is via scrambling plaintext into ciphertext and then back again. If you
want to talk encryption, then the most notable encryption should be AES 256-
bit encryption. Supposedly, which makes sense, it is virtually impossible for a
brute force style attack to guess this key. There are 78 digits in the ridiculous
number that comes up in Google after a search for how many possible
combinations are in a 256 bit encryption. Modern encryption can actually create
keys based on the user's mouse movement that will create unique and random
seeds. It is also common nowadays for modern systems to have specific key
protocols that will generate a new and fresh key for every session which adds
another later of security. Cryptography is a tool used to protect information and
keep it out of harms way. Since the beginning of computer communication.
Cryptography has been used to safeguard government and personal information.
The need to classify messages has been seen since manual cryptography in
World War I.
Cryptography protects sent information by keeping it confidential. By verifying
the receivers and recipients credentials only the intended users can view the
information.
Hash functions can be used to protect publicly seen information and asymmetric
keys assist with encoding mass amounts of information detailing who can
access what..
Using a lock and unlock key is another way to protect your data. Requiring a
unique code that only the intended receiver will have. Seeing this encryption
first hand in the Air Force. A code would be sent over a lan line connecting
to a component I installed. The first digits would unlock and verify the
weapon system. Verifying the correct recipient received the code.
Cryptography verifies the integrity and eliminates most worry of information
compromise. Becoming a valued layer of protection against cyber attacks.
Cryptography secures the transfer of information from anyone who may try to
steal steal that information while in transit. This process is mostly used with
banking and e-commerce transactions. With cloud storage becoming more
popular, having that data encrypted could deter an attacker. The way we
communicate now also requires encryption. The different message apps that we
use require end to end encryption. End to end encryption guarantees that the
data between two people cannot be viewed by an attacker. The content being
transferred is encrypted by client software before being passed to a web client
and decrypted only by the recipient. In todays world encryption is an important
part of keeping data secure as it travels. Cryptography is the practice of
protecting user data by transforming it into a form that is unreadable or in
other words a written code. This would be called a ciphertext. The overall
process is called encryption. Ciphertext can only be converted to a readable
format by whoever has the key to convert it. This process is called decryption.
Cryptography is divided into two categories; public key and private key.
Cryptography being a method that enables a user to store and transmit
information while safeguarding it from intruders means we can use cryptography
methods to keep information private and let users communicate in a way where
only the intended recipient can read the message. Ciphers have been used for
thousands of years to keep information, messages, and other valuable documents
secret. Today encryption has become big business as everyone wants to keep
their personal business, transactions, and messages hidden from prying eyes.
Some of the most widely used encryption algorithms in use today are 3DES,
AES, and RSA, and there are other more advanced algorithms that are being
used by government agencies all over the world. With today's advanced
cybercriminals and spies, people will continue to create more advanced
algorithms to protect sensitive data from being intercepted and read.
Cryptography is the means in which we use sypher text to encode plain text
weather it is a file at rest or a file in motion. cryptography is essential for
protecting ones data from a potential attacker and is used every day. when
encoding a text the cypher text will be illegible to another party unless the
cypher key is provided. This can also work against us as an attacker can use
ransomware and encryption software to essentially hijack our data with the
threat of data loss if there is failure to pay. Sypher text helps protect our
data by encoding files so that they do not fall into the wrong hands. This
can also be handy if your device is stolen as an encrypted file without the
key is useless to an attacker, while you can restore your data safely from the
cloud onto a new device, this prevents data loss and makes our lives much
easier in the long run. You can also encrypt data in motion to prevent files
from being intercepted. Cryptography is a system used to encrypt messages and
cannot be deciphered by non authorized persons or machines. it is used to
enhance cyber security. it mitigates cybercrime by using elaborate designs to
encrypt messages. it has a more personal response than cybersecurity, some
experts argue that cryptography is a subset or part of cybersecurity. while i am
discussing the difference between cryptography and cybersecurity both are
different in their own way. cybersecurity has many means of ensuing that the
cyber threats are the same in some ways but different in other ways.
cryptography is part of cybersecurity. Cryptography is securing communication
from adversaries who will try to infiltrate. Cryptography is when plain text is
converting into ciphertext. It starts with unencrypted Plaintext message which is
goes through an encryption key sent to be encrypted into Ciphertext then
there’s a Decryption Key to Decrypted into Plaintext.
Symmetric Encryption
You have what is call Symmetric Encryption where you have a sender send
data in plain text using a shared Key then it goes to what is called Ciphered
data. It goes to the shared Key which is decrypted plain data for the person
who will receive it in plain text.
• Single Key to Encrypt & Decrypt
• Straightforward & Conventional method of encryption
• Faster
• Requires smaller key lengths usually 128–256-bitlength
• Data Security
• Standard symmetric encryption algorithms are RC4, AES, DES, 3DES and
QUAD
Asymmetric Encryption
Then you have what’s Asymmetric encryption which is sent from a computer
in Plain text with a Public Key then it goes through the Cipher text to a
secret key. Once it uses the secret key it goes through decryption and it is
received in Plain text.
• Uses Two separate Keys for Encryption and Decryption
• Slower and Require More Processing Power
• Asymmetric Keys are longer in their lengths
• Used For Small Amounts of Data
• Standard Asymmetric encryption algorithms are RSA, Diffie-Hellman, ECC,
EL Gamal and DSA
I know that encryption is used in medical whenever patients’ records are sent
from different healthcare facilities.Corporations are now using these methods to
send out confidential materials to staff and customers. The term ‘cryptography’
refers to the process of safeguarding data, information as well as
communications by using codes. The objective of the technique is to make sure
that information can be read and processed by the intended party only and no
unauthorized party. In the current times when there is a surge in the instances
of cyberattacks and online security breaches, the relevance of cryptography has
further increased. The proper adoption of cryptography is considered of
paramount importance as it helps to keep information safe by converting it into
a form that cannot be understood by unintended recipients. A modern
encryption system is used to protect data as well as data use by deploying an
encryption technique which involves the use of the same key by the sender as
well as the receiver. The secret key is shared only between these two parties
so that no unauthorized party can gain access to it or the underlying data.
The modern encryption system is designed by following the Data Encryption
Standard (DES) algorithm. This systematic-key block cipher transforms the plain
text in 64-bit blocks and transforms it into ciphertext by using 48-bit blocks
and thus it assists in protecting data and data use .Modern cryptography is a
vital function of today’s sharing of information. Cryptography is the process of
scrambling information or using a secret code intended to be unreadable by
anyone other than the specified receiver who can de-code the message’s
contents. Data is either categorized as plain text (non-ciphered) or ciphertext
(encrypted). Computers use many different encryption methods for protecting data
that is to be shared or for safe-keeping on a local machine. Some examples
are RSA, AES 256, and Blowfish.There are three main categories used to
define data encryption—Symmetric, asymmetric, and hashing. Symmetric, “Also
called private-key cryptography or a secret key algorithm, this method requires
the sender and the receiver to have access to the same key. So, the recipient
needs to have the key before the message is decrypted. This method works
best for closed systems, which have less risk of a third-party
intrusion.Asymmetric “Also called public-key cryptography, this method uses two
keys for the encryption process, a public and a private key, which are
mathematically linked. The user employs one key for encryption and the other
for decryption, though it doesn’t matter which you choose first. And lastly,
hashing “Hashing generates a unique signature of fixed length for a data set or
message. Each specific message has its unique hash, making minor changes to
the information easily trackable. Data encrypted with hashing cannot be
deciphered or reversed back into its original form. That’s why hashing is used
only as a method of verifying data.These methods are used in conjunction with
other forms of security like WPA-2 and VPN tunnels. Stacking security and
encryption methods can make it incredibly difficult for an unauthorized person
to access or read your data.
Cryptography is defined as the process of converting ordinary plain text into
unintelligible cypher, and then reversing the process back to ordinary plain text.
It's a method of storing and transmitting data in a particular form, limiting the
availability to only the individual(s) it's intended for. Only they can read and
process it. Cryptography's main purpose is to protects data from theft or
alteration, as well as user authentication. Early versions of cryptography were
characterized as simply encryption. Today's cryptography is based on
mathematical theory and computer science practices. Modern cryptography deals
mostly with confidentiality (information privacy), integrity (information purity),
non-repudiation (information authenticity), and authentication (information
verification). Cryptography is used in all areas of modern life; like banking
transaction cards (embedded chips), computer passwords, and e-commerce
transactions. Some of the most common cryptographic techniques used are:
Symmetric-key Cryptography: Both the sender and receiver share a single cypher
key. The sender uses this key to encrypt plain text and sends the cipher text
to the receiver. The receiver reverses the process using the same cypher key to
decrypt the message and convert the cypher back into plain text.
Public-Key Cryptography: In Public-Key Cryptography, two related keys (public
keys and private keys) are used. Public keys may be freely distributed, while
its paired private key, remains confidential. The public key is used for
encryption and the private key is used for decryption.
Hash Functions: A fixed-length hash value (process of converting plain input
text into encrypted hash value using the cryptographic algorithm) is computed
as per the plain text that makes it impossible for the contents of the plain
text to be viewed or recovered.
The purpose of the two keys in asymmetric encryption is so anyone in the
world can encrypt data and send it to the recipient, who is the ONLY one
that can decrypt that information. As I said in an earlier post, asymmetric
encryption is part of the encryption used when you browse an encrypted
website using HTTPS. w This is a rather ingenious use of asymmetric encryption
because it is used to encrypt a key for use in symmetric encryption. Why
bother doing that? Two reasons. First, asymmetric encryption is one way only
due to the public/private key pair. In order to encrypt the other direction, a
different key pair must be used or a shared key (symmetric encryption) must
be used. Since the server has to obtain a key anyway, why not make it for
symmetric encryption as it is much faster - which is the second reason to do
it. Cryptography can be accomplished at multiple layers. In my opinion,
Application level encryption using industry accepted strong keys is the best way
to encrypt data at rest. This is done by taking the data that comes into an
application and encrypting in using AES-256 encryption. The data is then stored
in the database in its encrypted state. ww If someone accesses the database, they
can only see the encrypted values in the tables and not the real values. When
the data needs to be used, it has to be moved back to the application layer
where the application applies the keys to decrypt the data before it is
displayed to the user. Compare this to database encryption where the table or
column is encrypted by the Database Management System. ww If and unauthorized
person were to get access to the database, they will be able to see all of the
decrypted values. Likewise, disk layer encryption protects data from being
stolen on a disk, but if an attacker accesses the system that can access the
disk, the data is decrypted for them. Cryptography is a secure communication
between a sender and recipient. It also protects information by converting it
into a secure format called encryption. Encryption is used to prevent messages
from being read by unauthorized recipients. Cryptography is like having a
conversation with someone, but you are speaking in code so that only you and
the person you are speaking with understand.Encryption helps protect the data
you send, receive and store using a device. It includes text messages, running
logs save on fitness watch and banking information. Encryption scrambles
readable text that can only be read by the person who has the secret code, or
decryption key. Encryption helps provide data security for sensitive information.
The main purpose of encryption is confidentiality. According to
digitalguardian.com “encryption process results in ciphertext, which only can be
viewed in its original form if it is decrypted with the correct key.” There are
three types of encryptions to protect your data: Symmetric, Asymmetric and
Hashing. The word cryptography comes from the greek work kryptos, meaning
hidden. Cryptography is communicating securely, and the only people who can
see the communication is the people that it is intended for. For example, if I
am the sender, and I want to add 3 other people to the email, that is the
only people who will be able to see it, and it will be hidden from everyone
else, no one will have access to it.We use cryptography probably more often
than we think about. When we encrypt something, it takes the plain text and
puts it into an unreadable format, unless you are the intended recipient. A
modern encryption system example would be if I was a teller at a bank, and
I wanted to send an email to my boss regarding some customer financial
information, and I wanted to make sure that it was completely secure, and no
one else outside of our circle would be able to see it. I would encrypt the
email, to ensure that no one else can see it, and if our business or email is
hacked, they will not be able to get that information. It is very important that
we encrypt information that we want to keep safe.Cryptography can be defined
as studying the techniques of secure communications which permit the messages
and data to be viewed when sent from senders to receivers. It worth
mentioning that the word Cryptography is derived and taken from the original
Greek word Kryptos, which means hidden.The modern encryption system is used
to protect data and data use variously. For instance, the whole process is
related to data encryption, which means data hiding and covering for the sake
of that data protection. Cryptography is in fact is the process of changing the
clear readable text into a scrambled one into what is called ciphertext then
upon being approved that data will be switched to the readable form.
There are different types of Encryption and the list includes the following:
• Data Encryption Standard (DES)
• Triple DES
• RSA
• Advanced Encryption Standard (AES)
• TwoFish
• Use os secure sockets layer (SSL)
