crypt | stopping users from logging in , extensive testing | Frontend Framework library

I have encrypted in flutter using dart library encrypt. Below is the code sample:

I'm trying to generate Dogecoin addresses. The generated addresses have the same length as valid Dogecoin addresses generated by RPC-API getnewaddress and the same length, but they do not work. They are not valid.

Here are the steps:

1. Public key from secp256k1
2. Apply SHA256, then RIPEMD-160 to the result of SHA256
3. Add 0x1E (Version for Dogecoin) at the begin of the RIPEMD-160 result
4. Apply SHA256 twice to the encrypted pubkey for the checksum hash
5. Add first 4 bytes of the checksum hash (8 characters) to the end of the encrypted pub key
6. Apply BASE56

That generates a 34 characters address starting with D which looks very authentic, but none of them is valid. Why?

I am working out a custom hybrid encryption system. I've got symmetric encryption & asymmetric encryption & decryption all handled server-side. All I need to work out now is symmetric decryption.

I got some trouble because my client is sending symmetric key, iv & data all in string format (after asymmetric decryption), but CryptoJS is very touchy with it's encoding. It's also very confusing and vague as far as documentation goes- at least for a relatively new developer. I just can't figure out what encoding CryptoJS wants for each argument. I figure I should have guessed right by now, but no.

Docs
Some help I've gotten previously

I'm requesting help getting the encoding right so that I can decrypt with the following. And thanks a lot for any assistance.

Example of data after asymmetric decryption as per below (throw away keys):

I'm trying to make my small function up to date, it generate 2 warnings:

(node:8944) [DEP0106] DeprecationWarning: crypto.createDecipher is deprecated. (node:8944) Warning: Use Cipheriv for counter mode of aes-256-ctr:

Code:

I am new to JavaScript, not sure if this very basic question. I've created a Bitcoin Price update dashboard using the data fetched from the external WebSocket. I managed to get the data from the WebSocket and display it on the HTML table but i was only able to fetch only the live price of the bitcoin I want to also display the Bitcoin quantity in the other column. I want to know how to append two different data in 2 columns in one row. I tried my best to explain.

I have provided the code snippets below as well as external Websocket from where I am pulling the data.

NOTE: I'm pulling the data from an external websocket and with that WebSocket I can get all the details like Bitcoin price, quantity, type and everything. "messageObject.p" means Price and "messageObject.q" means Quantity. p=price and q=quantity. I'm able to get the messageObject.q (quantity) to be displayed on the table but I'm unable to show the messageObject.p (price) in the other column of the table.

Please let me know how should I insert the row dynamically into a HTML table. Thank you so much in advance

I have two tables posts as a parent and 'posts_tags' as a child, I want to search by two fields year from the post table and also tag_id from posts_tags, how to add search query for child table in our query.

My Models Post.php

I'm trying to do RSA encryption using PHPSecLib, with a manual install (ie not using Composer).

I'm following these manual installation instructions I found here: https://davescripts.com/manual-installation-of-phpseclib

And trying to do this example which I located here: How to Decrypt RSA OAEP with SHA256 using openssl on PHP

My steps I've taken so far:

1. Visited the GitHub repository here: https://github.com/phpseclib/phpseclib/tree/3.0

2. Under 'Code' selected 'Download ZIP'.

3. Unzipped the files locally and uploaded the entire 'phpseclib' directory to the server.

4. Created a test script, and troubleshooted multiple layers of includes and use that were needed to get it working.

5. However, at the moment, I'm getting a new error - "Class name must be a valid object or a string" which I don't understand and can't seem to resolve.

My test script is now as follows:

I have been using Crypt::X509 before, but now I porting my code to newer supported library Crypt::OpenSSL::X509. The most important fields in the certificate are CN and SAN, I expect there are a simple call like:

I'm trying to decrypt a string using phpseclib.

My hashed string is being generated from a javascript library called jsencrypt. The result of the encryption is saved in a database.

Afterwards I'm using phpseclib3 to try and decrypt the string using this: