Simple encryption function in Dart language


I would like from you to help me create a hash function, the steps are pretty simple:

T = they all have tags (1 to 5)

L = and lengths (e.g. name="test", hence its length is 4

V = 5 values (name, taxID, date, total, totalVat)

1. for each value, hash T and L to hex, then to string

2. concatenate the hashed T and L with V

e.g. for name, since its tag is 1 and its length is 4 ( "test" ) then tag's hash is 01, and the length's tag is 04, so concatenating them with the value: 0104test

and we do that for each value, let's take another example for taxID

its tag is 2, and length is 10 (constant length) and its value 1234567891

tag's hex is 02, length is 0a, hence the TLV is 020a1234567891


here's the exact docs:

[login to view URL]

[login to view URL]

I might be wrong in my explanation, so please head back to the docs it'll be explaind better.

I need this ASAP with the best offer from the most experienced, Thanks.

Skills: Dart, Flutter, Cryptography, Encryption

About the Client:
( 3 reviews ) Jeddah, Saudi Arabia

Project ID: #33034442

Awarded to:


Hii, I am flutter developer with good experience in this field. I can create encryption function as per your requirements. Let's more discuss regarding your requirements in chat section. Thanks and regards. Milind.

$50 USD in 2 days
(1 Review)

6 freelancers are bidding on average $77 for this job

(1 Review)

Hello, I hope this finds you well. I have just seen your project requiring; Cryptography Dart Flutter Encryption I believe that my 10-year experience in this field is what you need right away. Avoid the headache of lo More

$120 USD in 7 days
(0 Reviews)

I just saw your occupation for the WordPress site. I have perceived your prerequisite and am exceptionally intrigued by your task. Investigate a portion of my significant sites: [login to view URL] http More

$20 USD in 7 days
(0 Reviews)

Hello -Im an expert developer (for about 15 years) of web, service oriented, and standalone Apps In particular i have solved (as you can verify in my profile) this requirement according to your country regulation, More

$40 USD in 7 days
(0 Reviews)

Hi there. I am working with many encryption. this is very simple encryption. So this is no problem for me. Please contact me. Thanks.

$200 USD in 1 day
(0 Reviews)