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So let's let's let's talk about this base64 encoded, so these are so similar to the ASCII encoding,

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but with some modifications.

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So in that you can go to one of the characters and we have this special, almost like a tablet space

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and not breaking space and newline character and every other stuff.

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But this 64 does not care about all the special characters.

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This dispositional only cares about uppercase alphabets and also because Alphabet and the numbers and

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it would also care for this person.

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And so all these characters are considered into this basic question.

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And you can see here the index starts from zero to 63.

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So these are the 64 values and the current binary number.

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So in the format and the character is yet so in the base, which determines you in a similar way, one

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means B and two, Mincy three and so on.

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Up to now we have this opportunity, we have the uppercase and from 26 we have to solve it.

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And 26 year old B and C and so on and up to 50.

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We have the R opposition to this.

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Of it from 52 onwards, we will have the numbers up to 61 because these are the numbers and across this

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press and around.

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So including base64.

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So you can see there is a column called Paddy is Equal to, so we look at this by seeing an example.

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So what this basic issue for us is, if you have any paragraph to encode or a sequence of events, then

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it would take three or four minutes at a time like three characters, and then they will be converted

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into the ASCII binary format.

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So let me open this ASCII.

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They will also.

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So if I say you're creating, the current binary number will be drawn from this dismal 64 and then in

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the same way we will take three rebate's as a group and then these each word consist of eight bitrate.

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And in these eight, which if you combine three bites, we get confirmed.

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So 18 to 324.

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So in the best 64, what we are going to these will take six, which at the time and we will get for

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various four because twenty four by six it's four.

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So for each three characters we will write the basic three, four, four, four characters.

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So if this seems consuming or sorry if it seems confusing.

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So I start to request pretty, I want to make this right, but this Wikipedia has this good table and

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also they have mentioned the example.

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So that's why I thought I wanted to show you these examples.

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So this is a paragraph or a plain text I want to convert and managed to distinguish.

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Let's take a look at this man.

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And after this, busy.

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Sure.

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We get this one.

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All right.

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First I told it, then this is what we need to take.

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Three three characters are based at a time.

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So the first group is meant yum yum.

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So in cafetorium, in the Exodus model representation for Captain Eskies 40.

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So if we convert that into the eight bits, you get this one.

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So these are the eight bits contributing to.

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And these are the eight bits from here and the other eight bits of it.

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So how we got this a bit, you can just look at this and you can convert this, this model to binary.

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We get these three.

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So these three eight bit can contribute.

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Twenty four bits, eight eight eight point four consists of 24 bits.

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And now we're going to divide this into four parts because it's two six and basically two four six four.

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That's the maximum length.

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We can increase six bits.

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Let's take five to six bits.

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And then you need to look at this 19 in our inaudible 60-40.

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So if you take a look at this point in it, so write down and take for the next six with the next six

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weeks, five and four to six.

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And look at this decimal value in this base64 table.

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Look at the speed of you.

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OK, now what if we have some intervening characters so we do not have any multiple of three.

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Wait, what if we have only two bits so we can convert in the same way?

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But we will add this is equals two.

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You can see here there is a padding and this padding is added at the end to match the particular to

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equal the particular number of bits.

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So you add to deros as a padding and you can convert this one and you get the four and the tea and you

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will add the very end the same way.

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If there is only one bite, you will convert that into the eight bits and then you will add very first

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six bits.

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Consider the 19 and then we have a little bit training for our film.

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So you what you want to do is you put the four zeroes because we need the.

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I mean, six bits.

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Right?

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Already there are two which you need to put the forward.

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And if you put the zero right, you get the sixteen.

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And after looking at that cuttable so whatever you get the Q and this one, these bits are empty so

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you can put the padding.

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So as is equals two.

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So if you want one to remember that this is the basis for encoding, you can normally see that is equals

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to at the end of the anchorage.

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OK, now let me call this you need to remember all these manual encodings, you need to do it manually.

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There are online tools for this.

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It's.

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Base64, OK, was he foreign currency?

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Now I want to get to this because I want to parachute in here and I want to go it.

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So as you can see, we have got this plain text, which is this one, so this is the very simple encoding

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you can do.

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And if you put in a city of challenges, this will be the basic challenge you can get in the city of

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challenges.

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Even though they did not ask you this very quickly for 10 or 15 points, they will include this anchoring

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somewhere in the middle of some value.

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So you can you need to decode this to another value and you can work on that value to get the plaintext

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or some other value.

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So this is one of the important Anchalee.