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. xx As I said in an earlier post, asymmetric encryption is part
of the encryption used when you browse an encrypted website using HTTPS. 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. xx 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. xx Compare this
to database encryption where the table or column is encrypted by the Database
Management System. If and unauthorized person were to get access to the database,
they will be able to see all of the decrypted values. xx 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)
