Understanding Binary as base knowledge to learn SHA ( Secure Hash Algorithm ) in Cryptography

SHA or secure hash algorithm is an algorithm in cryptography that functioned to change a message become message digest ( message = input, message digest=output). But how to fully understand the algorithm, we have to know convert the first message to binary. And it is basic that we have to know. It's simple but come difficult if we do not know how to start. For this occasion, I will try to explain using my username @ matriks77.

ASCII Byner Table.

To start, we can use ASCII Code table and Conversion table from https://ascii.cl

^{ASCII CODE TABLE}

From above table, I found characters about my username "@matriks77" in ASCII and hex (be marked using the blue highlight) in following as :

@ = (64 , 40) ; m = (109, 6D); a = (97, 61); t = (116, 74); r = (114,72); i = (105, 69); k = (107, 6B); s = (115, 73); 7= (55, 73); 7 = (55, 73).

CONVERSION TABLE
Now, We can do conversion @username(@matriks77) in binary like this, following higlight in the above table:
@ = (64 , 40) = 01000000
m = (109, 6D)= 01101101
a = (97, 61) = 01100001
t = (116, 74) = 01110100
r = (114,72) = 01110010
i = (105, 69) = 01101001
k = (107, 6B) = 01101011
s = (115, 73) = 01110011
7= (55, 73) = 001101111
7= (55, 73) = 001101111

The Final Result :
@matriks77 = 01000000 01101101 01100001 01110100 01110010 01101001 01101011 01110011 001101111 001101111

As a comparison

We can compare the result trough this way

Binary ASCII Table

0,1,2,3,4,5,6,7 analogous as x coordinate and 0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F as y coordinate. and 0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F have Base byner like this:

example :
"d" located at coordinate (x,y) = (6,4) has biner = 01100100
I will be applicating in my username "@matriks77"
@ : (4,0) = 0100000
m : (6,D) = 01101101
a : (6,1) = 01100001
t : (7,4) = 01110100
r : (7,2) = 01110010
i : (6,9) = 01101001
k : (6,B) = 01101011
s : (7,3) = 01110011
7: (3,7) = 00110111
7 :(3,7) = 00110111

The Final Result :
@matriks77 = 01000000 01101101 01100001 01110100 01110010 01101001 01101011 01110011 001101111 001101111

Binary Translator

in https://binarytranslator.com we will be find the same result

Conclusion

1. From 3 ways, found the same result.
2. To use ASCII Code in a first way, The first step uses ASCII Code Table and continue with Conversion Table
3. (0-9) and (A-F) has basic binary that used to convert a message to binary.

Reference
1.https://ascii.cl/conversion.htm
2.https://ascii.cl/
3.https://tanianovena.wordpress.com/2017/01/30/cara-mengubah-huruf-ke-bilangan-biner-ascii/
4.https://binarytranslator.com

Thanks for the read and for your feedback about this post. Critics, and suggestions very useful for me.

Best Regards

@matriks77