Greetings beautiful friends in #steemkids community.
Here is another week of our crypto grassroots education by our prof @fredquantum
It's my delight to share in the.vume four of the classes on cryptography and it's elements.

1 (a). What Is Cryptography

This is the type of communication in which the interaction is based only between the sender and the recipient. It is a secured communication that hides the conversation or message (data) to be shared among only the sender and the receiver without the knowledge of others.
Fir instance, Ada was sitting with her friends and sent a message to Daniel without her friends seeing the content if the conversation.

^{Edited by @chimeroselam in Pixellab}

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Cryptography is subdivided into 3 types which are ; private-key, public-key and hash function encryption.

1 (b). What Is Private-key Encryption

Private-key Encryption can be defined as the use of private-key to Encrypt or decrypt a Data. It is the coding of an information and changing it from the original form (plaintext) to a mixture of letters and numbers and also requires the private-key before decription (that is uncoding.

^{Edited by @chimeroselam in Pixellab}

1 (c). What Is Public-key Encryption

This is the use of two separate keys to Encrypt and decrypt an information so as to hide it from others. Here, Ada uses a Public-key encrypt an information in the presence of her friends and sends it to Daniel, and Daniel uses a Private-key to decrypt it.

^{Edited by @chimeroselam in Pixellab}

1 (d). Differences Between Private-key Encryption And Public-key Encryption

The differences Between Private-key Encryption And Public-key Encryption are:

• In private-key encryption, the same private-key is used to encrypt and decrypt an information.

• In public-key encryption, the public-key is used to encrypt by the sender but the reciever uses the private-key to decrypt as seen in the illustrations above.

2 (a). What happens to outsiders if a message is encrypted? Give a brief example?
When a message is encrypted the outsiders or people that are not associated in the conversation does not see the message that is sent. Only the sender and the receiver sees the message.

^{Edited by @chimeroselam in Pixellab}

2 (b). Screenshot of Different inputs And Observations

The following are some examples of my inputs and the observations I found out

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• For the screenshot on the left, it has an input "the Police men used the elevator to get at room 275 quickly" and it has the encryption e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 which is different from the second input on the right.

• The screenshot on the right has an input "the man ran into room 275 whith an Encryption b258051e1b304aad88f314acfde753f3a35c139e03141e47c543b4cce679b380, which is also different from the first one.

According to our prof @fredquantum, there are 64 alphanumerics and the encryption can never be the same. The sample above also proves it to be true.

Conclusion

The class is very interesting class. Learning from the Grassroot is very exciting. I'll like @bossj23, @chiomzy810 and @fortwis09 to also be a part of this lesson for there are so much benefits.

Cc;

@steemkidss
@ngoenyi
@fredquantum
@ijelady
@mariajruizb
@madilyn02
📝
Introductory Post

thank you😁