Let us begin with the last lesson in cryptography.
In this video, we will discuss for discussing the importance of fishing and types of fishing that is
amplified and S.A.G..
A cryptographic has function is a hash function, which makes an input like a message and returns a
fixed string of bytes, the string is called hash value message digest, digital fingerprint or checksum.
A hash function is a mathematical function that converts a numerical input value into another complex
numerical value, the input to hash function is of arbitrarily end, but output is always fixed and
an ideal hash function is a one way function.
For every input, there is one unique output.
Two different inputs cannot result in the same output.
The ideal hash function as three main properties, it is extremely easy to calculate.
It is extremely, computationally difficult.
It is extremely unlikely that two slightly different messages will have the same hash value.
A real many to one function.
There is a possibility that more than one input can result in the same output.
How would a hash function is analyzed by checking the probability of more than one inputs having the
same output, the lower the probability, the better is the hash function.
Now let us discuss hashing function with simple Real-Life example Alice.
But this is a tough math problem to Bob and claims he has solved it.
Bob would like to try it himself, but would yet like to be sure that Alice is not bluffing.
Therefore, Alice read the resolution computed and hashes it and tells Bob the hash value while keeping
the origin secret.
Then when Bob comes up with the solution himself after a few days, he can verify Alice had a solution
earlier by calculating the hash and check that it matches the hash value given to him by Alice.
This is a real live example of hashing.
Now we will go back to the diagram shown on your screen here.
An image of cat is put into hashing function, which is a one way function, and we got a petri dish
which has value, which we just can't understand in the message.
I love cybersecurity.
You can see that the input and output are not the same thing.
You can have any input, but output will be of the fixed line in another message.
Welcome to the cyber world.
The output value is just we can't understand anything.
Therefore we can claim that hash function is secure.
Let us discuss types of hashing algorithms.
We will discuss, amplify and S.A.G..
And if I was most popular and widely used, has functioned for quite some years, the message that I
just family comprises of has functions like Emily to Emily for Emily and MDX, it was adopted as Internet
standard RFQ one, three, two, one.
It is a 128 bit function.
MTV Digest have been widely used in the software world to provide assurance about the integrity of the
transfer file.
For example, file servers often provide a computer and check some other files so that the user can
compare to take some of the downloaded file with.
In 2004, coalitions were formed, namely faith and analytical attack was reported to be successful
only in another by using computer Kluster, the coalition attack resulted in compromise in the faith
and hence it is no longer recommended for use.
Next is the Securus function.
It is the family of such a competitor for S.A.G. algorithm's is such a zero Issachar one as a two and
such a three, both on the same family.
They're actually structurally different.
The original version is a set of zero one 60, which has function was published by the National Institute
of Standards and Technology NIST in 1993, which are few weaknesses and did not become very popular.
Later in 1995, a statue of one was designed to curb alleged weaknesses of a zero.
Issachar One is the most widely used of the existing S.A.G. functions.
It is employed in several widely used applications and protocols, including Secure Sockets Layer that
is the SSL security in 2005.
And Metallo was found for uncovering collisions for a situation with impractically making a long term
employability of such a wonderful Isatou family has for further S.A.G. variants like S.A.G. 224, S.A.G.
256 and exegete 384 and Acidify one two, depending upon the number of words in virtually no successful
attacks have been yet reported on S.A.G. to function, though as the data the strong has function,
though significantly different, its basic design is still that follows a situation.
Hence, NIST called for a new competitive hash function in October 2012.
S.P. choose the algorithm as a new set of three standard GTECH offers many benefits such as efficient
performance and good resistance foredeck, therefore such it is stronger than endevour.
Now let us discuss applications of fashion with some real life examples.
The first is password storage.
Instead of suing passwords and clear, mostly all processes store the hash value of passwords in the
file.
The password file consists of a table of papers which are in the form user comma hashed password.
An intruder can only see the ashes of passwords, even if he says the password.
He can neither log on using the hash, nor can it derive the passwords from the hash value since the
hash function.
But this is the property of previous resistance.
Next is Data Integrity Check.
Let's consider an example like I'm going to download, let's say, a pirated version of Windows 10 from
a friend of mine.
But I know and my friend is a crook and he might have tampered with the ISO file.
So I take the has given in the Microsoft website and compare it with the file he is giving these prominent
applications of hashing algorithm.