TNW3023 _week 2 by Nor Zakiah Lamin

TNW3023 _week 2 by Nor Zakiah Lamin https://padlet.com/nzakiah/week2 Chapter 2 - Cryptography en-us 2017-10-04 09:23:30 UTC 2018-10-15 01:31:37 UTC hello@padlet.com Salam All, nzakiah https://padlet.com/nzakiah/week2/wish/290599775 Please read slides on Chapter 2 that i've shared thru whatsapp.

Here i give u link for extra reading about cryptography and also video for your understanding.

]]> 2018-10-09 08:02:53 UTC https://padlet.com/nzakiah/week2/wish/290599775 Video on cryptography nzakiah https://padlet.com/nzakiah/week2/wish/290600826 2018-10-09 08:07:16 UTC https://padlet.com/nzakiah/week2/wish/290600826 Task 2 nzakiah https://padlet.com/nzakiah/week2/wish/290600939 Write in your own words the definition of:
a) Encryption
b) Decryption
c) Plaintext
d) Ciphertext
e) Keys

Please post your answer here and i will comment and rate.

Thank You.]]> 2018-10-09 08:07:41 UTC https://padlet.com/nzakiah/week2/wish/290600939 Muhammad Farhan Bin Mohd Narodi https://padlet.com/nzakiah/week2/wish/290602880 a) Encryption
Encryption is a method where information is scrambled into code to make the information secure from foreign access.

b) Decryption
Decryption is a method where you turned the encrypted data into human readable information.

c) Plaintext
Plaintext is just the normal readable information that humans can read in any human language.

d) Ciphertext
Ciphertext is plaintext that has been encrypted for data security.

e) Keys
Keys uses an algorithm to encrypt, decrypt and share data where only computers with the same keys can access the data.

]]> 2018-10-09 08:14:37 UTC https://padlet.com/nzakiah/week2/wish/290602880 Muizzah Binti Shamsudin https://padlet.com/nzakiah/week2/wish/290819433 a) Encryption is a way toward changing over data or information into a code, particularly to counteract unapproved get to.

b) The definition of decryption is changes of scrambled information into its unique frame.

c) Plaintext is a content that isn't computationally labeled, uncommonly organized, or written in code.

d) Ciphertext is the enciphered type of a content or of its components.

e) Keys is conveys a key to two gatherings who wish to trade secure scrambled information.]]> 2018-10-09 15:38:23 UTC https://padlet.com/nzakiah/week2/wish/290819433 JOHAN DANIAL BIN NASUHA https://padlet.com/nzakiah/week2/wish/290821714 (a) Encryption - is the method by which plaintext or any other type of data is converted from a readable form to an encoded version that can only be decoded by another entity if they have access to a decryption key. Encryption is one of the most important methods for providing data security, especially for end-to-end protection of data transmitted across network.

(b) Decryption - is the process of transforming data that has been rendered unreadable through encryption back to its unencrypted form. In decryption, the system extracts and converts the garbled data and transforms it to texts and images that are easily understandable not only by the reader but also by the system. Decryption may be accomplished manually or automatically. It may also be performed with a set of keys or passwords.

(c) Plaintext - is the term used to refer to the information in plain language that the sender desires to send to one or more receiving computers or individuals. Also referred to as cleartext, plaintext is commonly referred as the input to a cipher or encryption algorithm. The term cleartext can also refer to sounds, images or other multimedia information that is transmitted without encryption. In laymen’s terms, plaintext refers to information that is represented in its “normal” form before any action is taken to conceal or compress the data.

(d) Ciphertext - cipher is an algorithm which is applied to plain text to get ciphertext. It is the unreadable output of an encryption algorithm. The term “cipher” is sometimes used as an alternative term for ciphertext. Ciphertext is not understandable until it has been converted into plaintext using a key.

(e) Keys - is a variable value that is applied using an algorithm to a string or block of unencrypted text to produce encrypted text or to decrypt encrypted text. The length of the key is a factor in considering how difficult it will be to decrypt the text in a given message. ]]> 2018-10-09 15:41:20 UTC https://padlet.com/nzakiah/week2/wish/290821714 Muhammad Amirun bin Uyop mary_tateyama https://padlet.com/nzakiah/week2/wish/291071927 a) Encryption is the process of converting information or data into an unreadable code, done by using mathematical operations to prevent unauthorized access by anyone other than the recipients with the encryption key.

b) Decryption is the process of converting the code or data in its encrypted form back to its original and readable format using mathematical operations. It can only be done by a user with the secret key or password.

c) Plaintext is the original un-encrypted data stored by the computer system that is readable by both computer system and human. It can contain informations such as messages and intels, and are considered input to the encryption process.

d) Ciphertext is a term used to describe any text or other data that is encrypted and cannot be read by human nor computer. Ciphertext is the result after an encryption is done to a data or file, that can be converted back into readable file format by the decryption process.

e) Keys are a piece of information or a parameter used to initiate the decryption and encryption process. It also specifies the transformation of plaintext into ciphertext for encryption, and vice versa for decryption algorithm.]]> 2018-10-10 04:26:39 UTC https://padlet.com/nzakiah/week2/wish/291071927 SHAHIMAN KHAIRUDDIN https://padlet.com/nzakiah/week2/wish/291110979 Encryption - the process of converting information or data into a code, especially to prevent unauthorized access.

Decryption - is the process of taking encoded or encrypted text or other data and converting it back into text that you or the computer can read and understand. This term could be used to describe a method of un-encrypting the data manually or with un-encrypting the data using the proper codes or keys.

Plaintext - unencrypted information, as opposed to information encrypted for storage or transmission.

Ciphertext - is encrypted text and encrypted result. The term cipher is sometimes used as a synonym for ciphertext, but it more properly means the method of encryption rather than the result.

Keys - A network security key usually refers to the password or alphanumeric key that end users enter to access a local areanetwork. In common use, the network security key differs from other network keys used to determine networkaddresses, etc.

]]> 2018-10-10 07:57:51 UTC https://padlet.com/nzakiah/week2/wish/291110979 NUR FATEHAH BINTI FADZIL https://padlet.com/nzakiah/week2/wish/291115580 (a) Encryption - the process of converting data into a secret code.

(b) Decryption - the process of converting back the data that been encrypt to its original form.

(c) Plaintext - is a normal text and it is readable before being encryption.

(d) Ciphertext - is the encrypted text and cannot being read by a human.

(e) Keys - is a piece of information that determines the functional output of a cryptographic algorithm. ]]> 2018-10-10 08:15:16 UTC https://padlet.com/nzakiah/week2/wish/291115580 MUHAMMAD NAJIB BIN NAZRI https://padlet.com/nzakiah/week2/wish/291119076 Encryption - is the method by which plaintext or any other type of data is converted from a readable form to an encoded version that can only be decoded by another entity if they have access to a decryption key.
Decryption - is the process of transforming data that has been rendered unreadable through encryption back to its unencrypted form.
Plaintext - is unencrypted information, as opposed to information encrypted for storage or transmission. Plaintext usually means unencrypted information pending input into cryptographic algorithms, usually encryption algorithms.
Ciphertext - is the result of encryptiob performed on plaintext using an algorithm, called a cipher. It is also known as encrypted or encoded information because it contains a form of the original plaintext that is unreadable by a human or computer without the proper cipher to decrypt it.
Keys - is a set of instructions that is used to encrypt and decrypt data. Sometimes used to describe a CD-KEY or serial key.]]> 2018-10-10 08:25:08 UTC https://padlet.com/nzakiah/week2/wish/291119076 Muhammad Afiq Bin Myzanie https://padlet.com/nzakiah/week2/wish/291119128 1) encryption
Transform original text into encryption text
2) decryption
Transform encryption text into original textback
3) plain text
Real text or original text
4) chiper text
Original text that have been encryption
5) keys
It's a algorithm that only sender and receiver know. It's use to encrypt and decrypt the text.]]> 2018-10-10 08:25:19 UTC https://padlet.com/nzakiah/week2/wish/291119128 MUHAMMAD AQEEL B ABD KAMAL SAYUTI https://padlet.com/nzakiah/week2/wish/291122492 Encryption- Encryption is the process of encoding a message or information in such a way that only authorized parties can access it and those who are not authorized cannot. Encryption does not itself prevent interference, but denies the intelligible content to a would-be interceptor.

Decryption- Decryption is the process of transforming data that has been rendered unreadable through encryption back to its unencrypted form. In decryption, the system extracts and converts the garbled data and transforms it to texts and images that are easily understandable not only by the reader but also by the system. Decryption may be accomplished manually or automatically. It may also be performed with a set of keys or passwords.

Plaintext- Plaintext is a loose term for data (e.g. file contents) that represent only characters of readable material but not its graphical representation nor other objects (floating-point numbers, images, etc.). It may also include a limited number of characters that control simple arrangement of text, such as spaces, line breaks, or tabulation characters (although tab characters can "mean" many different things, so are hardly "plain").

Ciphertext- Ciphertext is encrypted text. Plaintext is what you have before encryption, and ciphertext is the encrypted result. The term cipher is sometimes used as a synonym for ciphertext, but it more properly means the method of encryption rather than the result.

Keys- A cryptographic key is a string of bits used by a cryptographic algorithm to transform plain text into cipher text or vice versa. This key remains private and ensures secure communication.

A cryptographic key is the core part of cryptographic operations. Many cryptographic systems include pairs of operations, such as encryption and decryption. A key is a part of the variable data that is provided as input to a cryptographic algorithm to execute this sort of operation. In a properly designed cryptographic scheme, the security of the scheme is dependent on the security of the keys used.

]]> 2018-10-10 08:34:59 UTC https://padlet.com/nzakiah/week2/wish/291122492 AMMAR FAIZ BIN AHMAD https://padlet.com/nzakiah/week2/wish/291231705 a) Encryption
Encryption is the conversion of data into a form, called a cipher, that cannot be understood by unauthorized people.
b) Decryption
Decryption is the process of converting encrypted data back into its original form.
c) Plaintext
Plaintext is what you have before encryption or original text.
d) Ciphertext
ciphertext is the encrypted result. The term cipher is sometimes used as a synonym for ciphertext, but it more properly means the method of encryption rather than the result.
e) Keys
key is a string of bits used by a cryptographic algorithm to transform plain text into cipher text or vice versa. This key remains private and ensures secure communication.]]> 2018-10-10 13:35:44 UTC https://padlet.com/nzakiah/week2/wish/291231705 Mohamad Fadhly Bin Zulkefli https://padlet.com/nzakiah/week2/wish/291283384 a) Encryption
- Encryption is the conversion of data into a form, called a cipher, that cannot be understood by unauthorized people.

b) Decryption
- Decryption is the process of converting encrypted data back into its original form, so it can be understood.

c) Plaintext
- Information that can be directly read by humans or a machine (this article is an example of plaintext). Plaintext is a historic term pre-dating computers, when encryption was only used for hardcopy text, nowadays it is associated with many formats including music, movies and computer programs.

d) Ciphertext
- Cipher is an algorithm which is applied to plain text to get ciphertext. It is the unreadable output of an encryption algorithm. The term "cipher" is sometimes used as an alternative term for ciphertext. Ciphertext is not understandable until it has been converted into plain text using a key.

e) Keys
- key is a variable value that is applied using an algorithm to a string or block of unencrypted text to produce encrypted text, or to decrypt encrypted text. The length of the key is a factor in considering how difficult it will be to decrypt the text in a given message.]]> 2018-10-10 14:48:16 UTC https://padlet.com/nzakiah/week2/wish/291283384 Muhammad Khairin Asnawi Bin Rosli https://padlet.com/nzakiah/week2/wish/291345121
Encryption: the method by which plaintext or any other type of data is converted from a readable form to an encoded version that can only be decoded by another entity if they have access to a decryption key. Encryption is one of the most important methods for providing data security, especially for end-to-end protection of data transmitted across networks.

Decryption : the process of converting encrypted data back into its original form, so it can be understood

Plaintext : any text, text file, or document that contains only text. Unlike a rich-text document, a plain text file cannot have bold text, fonts, larger font sizes, or any other special text formatting. In the picture is a visual example of plain text vs. formatted text.

Cipertext : is a term used to describe any text or other data that is encrypted. For example, below is an example of ciphertext made using a substitution cipher.

Key: a piece of information that determines the functional output of a cryptographic algorithm. For encryption algorithms, a key specifies the transformation of plaintext into ciphertext, and vice versa for decryption algorithms. Keys also specify transformations in other cryptographic algorithms, such as digital signature schemes and message authentication codes.

]]> 2018-10-10 16:30:49 UTC https://padlet.com/nzakiah/week2/wish/291345121 MUHAMMAD FAIZ BIN MOHD FAIZAL https://padlet.com/nzakiah/week2/wish/291547295 a) Encryption : Encryption is the process of using an algorithm to transform information to make it unreadable for unauthorized users. This cryptographic method protects sensitive data such as credit card numbers by encoding and transforming information into unreadable cipher text. User will given a key to open the encoding data.

b) Decryption : Decryption is generally the reverse process of encryption. It is the process of decoding the data which has been encrypted into a secret format. An authorized user can only decrypt data because decryption requires a secret key or password.

c) Plaintext : Plaintext is ordinary readable text. That include any text file format that only contain text and does have any special text formating.

d) Ciphertext : Cipher is an algorithm which is applied to plain text to get ciphertext. It is the unreadable output of an encryption algorithm. The term "cipher" is sometimes used as an alternative term for ciphertext. Ciphertext is not understandable until it has been converted into plain text using a key.

e) Keys : In cryptography, a key is a variable value that is applied using an algorithm to a string or block of unencrypted text to produce encrypted text, or to decrypt encrypted text. The length of the key is a factor in considering how difficult it will be to decrypt the text in a given message.

]]> 2018-10-11 03:37:54 UTC https://padlet.com/nzakiah/week2/wish/291547295 NUR KAMILIA BINTI ABDUL LATIF https://padlet.com/nzakiah/week2/wish/291547983
a) Encryption – A process of transforming plaintext into ciphertext. Encryption is the method by which plaintext or any other type of data is converted from a readable form to an encoded version that can only be decoded by another entity if they have access to a decryption key. Encryption is one of the most important methods for providing data security, especially for end-to-end protection of data transmitted across networks.

b) Decryption – Decryption is
generally the reverse process of encryption. A process of transforming ciphertext into plaintext. Where it is the process of decoding the data which has been encrypted into a secret format. An authorized user can only decrypt data because decryption requires a secret key or password.

c) Plaintext – Can be defined as
the original message. Plain text, as you might have guessed, is rather plain. It supports standard characters, including numbers, symbols, and spaces, but does not support any type of text formatting. Where it cannot apply bold, italic, or underlined styles, and cannot use different fonts or font sizes in a plain text document.

d) Ciphertext
– Known as an encrypted message. Cipher is an algorithm which is applied to plain text to get ciphertext. It is the unreadable output of an encryption
algorithm. The term "cipher" is sometimes used as an alternative term for ciphertext. Ciphertext is not understandable until it has been converted
into plain text using a key.

e) Keys - Some
critical information used by the cipher, where is it known only to the sender and receive. A cryptographic key is a string of bits used by a cryptographic algorithm to transform plain text into cipher text or vice versa. This key remains private and ensures secure communication.The length of the key is a factor in considering how
difficult it will be to decrypt the text in a given message.

]]> 2018-10-11 03:44:54 UTC https://padlet.com/nzakiah/week2/wish/291547983 Muhammad Khairullah Bin Mumtaz Ahmad https://padlet.com/nzakiah/week2/wish/291559133
a) Encryption is a process of transforming a plaintext to ciphertext that cannot be understood by unauthorized user.

b) Decryption is a process of transforming ciphertext to plaintext so it can be understood.

c) Plaintext is the original message.

d) Ciphertext is encrypted message.

e) Key is a critical information used by the cipher that is only known to the sender and receiver.

]]> 2018-10-11 05:06:21 UTC https://padlet.com/nzakiah/week2/wish/291559133 Nasriaatul Natasha Binti Mohammed https://padlet.com/nzakiah/week2/wish/291620387 1) Encryption
-The process of converting information or data into a code, especially to prevent unauthorized access.

2) Decryption
- The reverse process of encryption. It is the process of decoding the data which has been encrypted into a secret format.

3)Plaintext
- The text that is not computationally tagged, specially formatted, or written in code.

4)Ciphertext
-The result of encryption performed on plaintext using an algorithm, called a cipher.

5) Keys
- A piece of information (a parameter) that determines the functional output of a crypthographic algorithm. ]]> 2018-10-11 09:26:26 UTC https://padlet.com/nzakiah/week2/wish/291620387