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Recover RSA private key from public keys - rhme2 Key Server (crypto 200)
 
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Using the greatest common divisor (GCD) to factorize the public modulo into the secret primes, so we can forge a RSA signature. Source for the rhme2 challenges: https://github.com/Riscure/Rhme-2016 -=[ 🔴 Stuff I use ]=- → Microphone:* https://amzn.to/2LW6ldx → Graphics tablet:* https://amzn.to/2C8djYj → Camera#1 for streaming:* https://amzn.to/2SJ66VM → Lens for streaming:* https://amzn.to/2CdG31I → Connect Camera#1 to PC:* https://amzn.to/2VDRhWj → Camera#2 for electronics:* https://amzn.to/2LWxehv → Lens for macro shots:* https://amzn.to/2C5tXrw → Keyboard:* https://amzn.to/2LZgCFD → Headphones:* https://amzn.to/2M2KhxW -=[ ❤️ Support ]=- → per Video: https://www.patreon.com/join/liveoverflow → per Month: https://www.youtube.com/channel/UClcE-kVhqyiHCcjYwcpfj9w/join -=[ 🐕 Social ]=- → Twitter: https://twitter.com/LiveOverflow/ → Website: https://liveoverflow.com/ → Subreddit: https://www.reddit.com/r/LiveOverflow/ → Facebook: https://www.facebook.com/LiveOverflow/ -=[ 📄 P.S. ]=- All links with "*" are affiliate links. LiveOverflow / Security Flag GmbH is part of the Amazon Affiliate Partner Programm. #CTF #Cryptography
Views: 45800 LiveOverflow
How To Encrypt And Decrypt Files Using Private Public Keys With OpenSSL On Ubuntu Linux
 
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How To Encrypt And Decrypt Files Using Private Public Keys With OpenSSL On Ubuntu Linux. This video tutorial will show you how to use the openssl command line to encrypt and decrypt a file using a public key. We will first generate a private key then extract the public key from this private key. last we will encrypt a file using the public key and later use the corresponding private key to decrypt it. 🌸 Support channel & make donation : https://www.paypal.me/aminenina/5 🌸 Subscribe for more videos : Youtube: https://www.youtube.com/user/aminosninatos 🌸 Follow me On Social Media Facebook : https://www.facebook.com/aminosninatos/ *********************************************************************** 🌸 How To Convert Public Private Putty's ppk Keys To OpenSSH Keys On Ubuntu Linux https://youtu.be/3aApOFQL44o 🌸 How To Use GPG Private Public Keys To Encrypt And Encrypt Files On Ubuntu Linux https://youtu.be/I-4dcpTDWys 🌸 How To Encrypt And Decrypt Files Using Private Public Keys With OpenSSL On Ubuntu Linux https://youtu.be/g9XN1-bANKU 🌸 How To Encrypt And Decrypt Files Using OpenSSL On Ubuntu Linux https://youtu.be/YU1AI62khIY 🌸 How To Use MD5SUM To Verify Data Integrity On Ubuntu Linux https://youtu.be/V1fgjXRFB2k 🌸 How To Generate Random Password From The Command Line On Ubuntu Linux https://youtu.be/TQ4QMJWVd8U 🌸 Linux How To Crack And Recover A Password Protected Zip File https://youtu.be/C9a6BPxUN_4 🌸 Password cracking with John the Ripper on Linux https://youtu.be/KK2bNgX1mRA 🌸 Linux : HowTo Encrypt And Decrypt Files With A Password using GPG https://youtu.be/a91v1bz_ZU4 🌸 How To Secure Copy Files In Linux Using SCP Command https://youtu.be/3Y8pVDhc3RQ 🌸 How To Sync And Backup Files In Linux Using Rsync Command https://youtu.be/aIMbg7vG6Rg ***********************************************************************
Views: 2969 Liv4IT
OpenSSH - Using RSA Public Keys for SSH Connection (ssh-keygen, ssh-copy-id, ssh- keyscan)
 
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Demo of connection via SSH using the RSA Public Keys without password using the commands 1) ssh-keygen - creates the public and private keys for connection 2) ssh-keyscan - putting the host into the trusted known_hosts files 3) ssh-copy-id - command to put public key in the authorized_keys file
Views: 28575 CodeCowboyOrg
Blockchain/Bitcoin for beginners 3: public/private keys, signatures... and first ever transaction
 
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Detailed overview of public/private key encryption and live demo of exactly how digital signatures work on Mac, combining public and private keys and hash functions. Welcome to episode 3 of my series on Blockchain/Bitcoin. I'm joined once again by my girlfriend Nadisha who is my classroom pupil... I build on the hash function concepts from the previous episode and explain the basic concepts public and private keys and how to use them to create digital signatures - a key part of the bitcoin infrastructure. We demonstrate in a Mac terminal how you can generate your own keys and encrypt and decrypt and sign your own resources - learning by doing always works. We touch on bitcoin addresses, what they represent and how they are created. Finally I go back for a refresh of the bitcoin blockchain browser and look at the first ever bitcoin transaction in the "Genesis Block" to show what a real bitcoin address looks like. Bitcoin Blockchain browser https://blockchain.info Online hash calculator - great way to practice and familiarise with hash functions - one of the most important building blocks of Blockchain/Bitcoin http://www.fileformat.info/tool/hash.htm Course to date (previous videos) 1. Blockchain introduction https://youtu.be/xwA2TkcAQgQ 2. Hashing, blockchain networks and look at blockchain browser https://youtu.be/oxwMnqFNq9M SAMPLE COMMANDS: You will need to use your own document - pick any document, obviously your hash values will be different to mine. Also I had to use (right arrow) - since comments do not allow "chevron" symbols # EXAMPLE 1: # generate public and private keys openssl genrsa -out mykey 2048; cp mykey privatekey; openssl rsa -in mykey -pubout -out publickey; rm mike #encrypt with public key echo “the cat sat on the mat” | openssl rsautl -encrypt -pubin -inkey publicly (right arrow) cipher.txt # show the garbage cat cipher.txt # decrypt with private key - The cat sat on the mat cat cipher.txt | openssl rsautl -decrypt -inkey privately # EXAMPLE 2: Sign Alice in wonderland #check the SHA256 hash of the document to send - d9db7b8984d808b2821070cc6cc76e4415229d3356452b2a0f06ec3608f13b6c shasum -a 256 alice-in-wonderland.txt | cut -d" " -f1 # create a text file called signature which hashes the document and encrypts with private key shasum -a 256 alice-in-wonderland.txt | cut -d" " -f1 | openssl rsautl -inkey privatekey -sign (right arrow) signature # wrap the signature up with the public key, the document and the signature and send it … we just copy to another folder tar -cvf alice.tar signature alice-in-wonderland.txt publickey;mkdir -p inbox;cp alice.tar inbox;cd inbox;tar -xvf alice.tar # inspect the public key and verify with the sender that it belongs to the sender cat publickey #decrypt the signature with the received public key - d9db7b8984d808b2821070cc6cc76e4415229d3356452b2a0f06ec3608f13b6c openssl rsautl -inkey publickey -pubin -in signature # hash the received document - d9db7b8984d808b2821070cc6cc76e4415229d3356452b2a0f06ec3608f13b6c shasum -a 256 alice-in-wonderland.txt | cut -d" " -f1 # if they are both the same then the document cannot have been changed since it was signed by the genuine owner of the # private key corresponding to the public key
Views: 20324 Matt Thomas
Configure SSH Server for Private Key Authentication in Ubuntu -Part1
 
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A tutorial on configuring SSH Server to Authenticate with Private/Public Keys using Ubuntu Linux http://www.danscourses.com/Linux-Fundamentals/how-to-install-ssh-in-ubuntu-388.html
Views: 98490 danscourses
633 PKI Assignment help (Crypto Lab – Public-Key Cryptography and PKI)
 
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Extract public key for verification: http://stackoverflow.com/questions/10271197/openssl-how-to-extract-public-key Verify sign : https://raymii.org/s/tutorials/Sign_and_verify_text_files_to_public_keys_via_the_OpenSSL_Command_Line.html Encrpytion : http://askubuntu.com/questions/60712/how-do-i-quickly-encrypt-a-file-with-aes Measure time ; http://askubuntu.com/questions/53444/how-can-i-measure-the-execution-time-of-a-terminal-process Cpp files : (openssl sample code) http://www.cis.syr.edu/~wedu/seed/Labs_12.04/Crypto/Crypto_PublicKey/
Views: 3585 Jae duk Seo
SFTP Authentication using private key with downloading and uploading
 
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Uploading and downloading file on SFTP using private key in .NET using SharpSSH Topic to cover: Connecting SFTP using Private Key using .NET console App • Downloading and Uploading File To download sample check article below: Article Link: http://www.techsapphire.in/index/uploading_and_downloading_file_on_sftp_using_private_key_in_net_using_sharpssh/0-162
Views: 8811 techsapphire
How To Use GPG Private Public Keys To Encrypt And Encrypt Files On Ubuntu Linux
 
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How To Use GPG Private Public Keys To Encrypt And Decrypt Files On Ubuntu Linux GNU Privacy Guard (GnuPG or GPG) is a free software replacement for Symantec's PGP cryptographic software suite. To encrypt and decrypt files we shall use GnuPG (GNU Privacy Guard), which is GNU’s tool for encryption and signing. GnuPG is a GPL Licensed implementation of OpenPGP ( Pretty Good Privacy ) standard 🌸 Support channel & make donation : https://www.paypal.me/aminenina/5 🌸 Subscribe for more videos : Youtube: https://www.youtube.com/user/aminosninatos 🌸 Follow me On Social Media Facebook : https://www.facebook.com/aminosninatos/ *********************************************************************** 🌸 How To Convert Public Private Putty's ppk Keys To OpenSSH Keys On Ubuntu Linux https://youtu.be/3aApOFQL44o 🌸 How To Use GPG Private Public Keys To Encrypt And Encrypt Files On Ubuntu Linux https://youtu.be/I-4dcpTDWys 🌸 How To Encrypt And Decrypt Files Using Private Public Keys With OpenSSL On Ubuntu Linux https://youtu.be/g9XN1-bANKU 🌸 How To Encrypt And Decrypt Files Using OpenSSL On Ubuntu Linux https://youtu.be/YU1AI62khIY 🌸 How To Use MD5SUM To Verify Data Integrity On Ubuntu Linux https://youtu.be/V1fgjXRFB2k 🌸 How To Generate Random Password From The Command Line On Ubuntu Linux https://youtu.be/TQ4QMJWVd8U 🌸 Linux How To Crack And Recover A Password Protected Zip File https://youtu.be/C9a6BPxUN_4 🌸 Password cracking with John the Ripper on Linux https://youtu.be/KK2bNgX1mRA 🌸 Linux : HowTo Encrypt And Decrypt Files With A Password using GPG https://youtu.be/a91v1bz_ZU4 🌸 How To Secure Copy Files In Linux Using SCP Command https://youtu.be/3Y8pVDhc3RQ 🌸 How To Sync And Backup Files In Linux Using Rsync Command https://youtu.be/aIMbg7vG6Rg ***********************************************************************
Views: 1373 Liv4IT
Using GPG
 
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Summary Many more examples of GPG usage. 7:09 - Generating a GPG key pair 16:24 - Creating a revocation certificate 18:05 - Outputting revocation certificate to a file 20:01 - Exporting public key (binary file) 20:26 - Using xxd hex viewer to view binary file 21:14 - Exporting public key (ASCII file) 28:09 - Importing a public key 28:51 - Checking fingerprint of public key Reference Materials http://www.gnupg.org/documentation/index.en.html - GnuPG Documentation
Public Key Cryptography w/ JAVA  (tutorial 05) - Elgamal Encryption Scheme
 
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Website + download source code @ http://www.zaneacademy.com 00:05 demo prebuilt version of the application 05:55 'Passive Eve' options for decrypting messages 07:43 Elgamal encryption summary & proof 11:20 code the application 27:11 test run the application
Views: 338 zaneacademy
SSL Private Key Read from PFX File IIS Extract And View
 
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Download and install OPEN SSL : http://www.gc14.com/hcon/downloads/openssl-0.9.8h-1-setup.rar Open Command Prompt - as Administrator Change directory to where you installed OPENSSL Sub-Directory is : BIN Example : CD C:\Program Files (x86) \GnuWin32\bin Type : openssl to activate OPENSSL Prompt At the OPENSSP Prompt: Enter : pkcs12 -in [YourPFXFile.pfx] -nocerts -out privatekey.pem -nodes Example : pkcs12 -in mail_YourDomain_com.pfx -nocerts -out privatekey.pem -nodes
Views: 3307 F-ZERO
Encryption and decryption with openssl
 
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This is a tutorial showing how to use OpenSSL in linux systems (Kali in the video) for symmetric and assymetric encription and decription.
Views: 11623 NetSec
Public Key Cryptography w/ JAVA  (tutorial 03) - DHKE w/ Encryption
 
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Public Key Cryptography w/ JAVA (tutorial 03) - DHKE w/ Encryption | Website + download source code @ http://www.zaneacademy.com
Views: 355 zaneacademy
How to Use Putty with SSH Keys on Windows
 
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In this tutorial, we will demonstrate how to use PuTTY with SSH keys in windows. Don't forget to check out our site http://howtech.tv/ for more free how-to videos! http://youtube.com/ithowtovids - our feed http://www.facebook.com/howtechtv - join us on facebook https://plus.google.com/103440382717658277879 - our group in Google+ In this easy step by step tutorial, you will learn how to use PuTTY as an SSH client in Windows. PuTTY is communication software available freely over the internet, which uses several network protocols including SSH. Logging in using PuTTY SSH keys allows the only those people who have a valid key pair, which further prevents any threat of unwanted hacking of data. Step#1: Configuring PuTTY terminal First of all, open up the PuTTY terminal. Over here, enter the host for the server which you want to connect to. Let's enter an IP address of one of the host here and leave the port to default. Step#2: Authorization With that done, let's move to the SSH option in the category portion, expand it and then click on the "Authorization" option. Here, browse for the Key File which will be automatically made when configuring this connection. Locate the file and then click on the OK button. Step#3: Connecting to SSH Server Once you are done with that, a terminal will open up and will prompt you for the username. Specify the username and hit enter. After that, the connection would be established completely, enabling you to perform any tasks depending upon the permissions set by the administrator. Step#4: Generate SSH Key Now let's see how we can generate the SSH keys. For that, open up the Putty key generator. Over here, click on the Generate button next to the "Generate a public/private Key pair" option, in the Actions section. Step#5: Encrypting and saving SSH Key You can also change the type of parameters according to your requirements, and even change the bits over here. When prompted to generate some randomness, keep moving the cursor over the blank screen over here. This step is basically used by the application for securing the encryption. Random movements can be hard to re-generate and the sequence produced by your movements is calculated by the application. Once the process completes, it will show you the encryption key in the preview area. To save this key, click on the Save Private Key button and it will prompt you with a notification asking you whether you want to create a key without a passphrase. Hit yes to ignore it for now and then specify the location for the file. Your PuTTY SSH key file would be saved with the ".ppk" extension. And that pretty much covers the basics of using PuTTY with SSH keys in windows.
Uninstall RSA-1024 encrypt Quickly With Effective Instructions
 
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This video deserves to be watched out thoroughly since it includes working instructions regarding the complete removal of RSA-1024 encrypt from the PC. You might also like paying visit here - http://www.cleaningpcvirus.com/how-to-delete-rsa-1024-encrypt-restore-encrypted-system-files
Views: 1397 CPV Team
Private Key and CSR generation using the Terminal
 
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Private Key and CSR generation using the Terminal: 1. Open the Terminal 2. Generate a private key using following command: openssl genrsa -out private.key 2048 3. Generate CSR using following command: openssl req -new -key private.key -out your_domain.csr -sha256 4. Enter the required data using English keyboard: Country Name (2 letter code), State or Province Name (full name) [Some-State], Locality Name (eg, city) [],Organization Name (eg, company) [Internet Widgits Pty Ltd], Common Name (e.g. server FQDN or YOUR name) [], Email Address [] 5. Private Key and CSR were generated and saved in your user folder 6. IMPORTANT: Save the private.key and your_domain.csr in a safe place. Repeating the generation command will not do exactly the same key — it will be another key, and you will need to generate a CSR for it and reissue the certificate https://fozzy.com/ — THE FASTEST HOSTING! 😎👍🏻 🔸 Shared Hosting from $3.9 / month. 🔸 Domains from $0.82 / year. 🔸 Linux VPS & Windows VPS from $8.99 / month. 🔸 SSL certificates from $6.9 / year.
Views: 1503 Fozzy Inc
NodeJs - Symmetric Encryption (Module Crypto)
 
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Learn to Encrypt and Decrypt Text With NodeJS using Module "Crypto". Easy and simple to use and very helpful in cases when you want to store information in database in encrypted form.
Views: 7316 Aman Kharbanda
Digital Signature Algorithm (DSA) - Public Key Cryptography w/ JAVA   (tutorial 07)
 
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Website + download source code @ http://www.zaneacademy.com | RSA Digital Signature @ https://youtu.be/5MxeckDiC18 | Elgamal Digital Signature @ https://youtu.be/gsie9ldUZ4c
Views: 260 zaneacademy
SFTP - Use WinSCP to Login to SFTP without Password using Public Key Private Key Pair
 
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WinSCP Download - https://winscp.net/eng/download.php Demo how to import an OpenSSH formatted Private and Public Key Pair into WinSCP for use with SSH and SFTP
Views: 57476 CodeCowboyOrg
How to Encrypt Strings and Files in Python
 
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In this video I show you how to encrypt and decrypt strings and files using Python. I show you how to create a key, store the key and then how to use the key to encrypt and decrypt strings and files. This video demonstrates the use of the cryptography module. 🌎 Post with code and a written tutorial: https://nitratine.net/blog/post/encryption-and-decryption-in-python/ 📺 Auto Py to Exe: https://youtu.be/OZSZHmWSOeM 📺 Python GUI Using Chrome: https://youtu.be/2kbeBzEQfXE 📺 How to Send Emails in Python: https://youtu.be/YPiHBtddefI The cryptography is supported by Python 2.7 and Python 3.4 and above. (Also PyPy 5.3+) 🌎 cryptography docs: https://cryptography.io/en/latest/ 🐍 In this video I use Python 3.6. 👍🏼 Feel free to comment with any issues.
Views: 18912 PyTutorials
PGP Encryption Tutorial (using gpg4win and Kleopatra)
 
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A short tutorial on how to use Kleopatra and gpg4win to encrypt messages using public PGP keys. Download gpg4win and Kleopatra here: http://www.gpg4win.org/ ** Also, an easier way instead of saving the persons public key as a GPG. Just have is saved to your clipboard and click on the system tray and click 'Certificate Import' and it does it all it's self :) (Harvey Crumpet)
Views: 193174 Kevin Cronly
Public Key Encryption Examples - The advantages of Public Key Encryption
 
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Learn more advanced front-end and full-stack development at: https://www.fullstackacademy.com Public Key Encryption is a cryptographic system that uses pairs of keys: public keys which may be known widely, and private keys known only to the message's recipient. In a public key encryption system, the public key is used to encrypt messages and only the corresponding private key can be used to decrypt them. In this video, we discuss the advantages of this system by giving public key encryption examples. Watch this video to learn: - The basics of cryptography - Common problems in symmetric key encryption - How public key encryption solves some of those problems
Views: 529 Fullstack Academy
How to use ssh private keys in FileZilla for SFTP password-less connections.
 
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Showing the way how to use ssh private keys in FileZilla for SFTP password-less connections. It's aimed to use this feature for Windows oriented users.
Views: 70863 Petr Ruzicka
How to Encrypt & Decrypt Files or Folders Using Command Prompt
 
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Get certified after completion on of Certificate Authority (ADCS) Server 2016 Course: https://www.udemy.com/complete-certificate-authority-adcs-server-2016-course/ Learn more: http://vincenttechblog.com
Views: 79061 Vincent's Tech Blog
assymetric encryption lab using public and private key
 
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Please watch: "IPv6 and Multiuser Lab showing wan connection using cisco packet tracer" https://www.youtube.com/watch?v=qq9r_A94lh4 -~-~~-~~~-~~-~- Learn to encrypt and decrypt files using public and private key. In this tutorial you will learn following things: 1.how to create private key in linux using openssl. 2.how to create public key using private key. 3.how to encrypt a file using public key 4.how to decrypt a file using private key. This tutorial demonstrate the complete example of asymmetric encryption technology.
Views: 581 slashrootdotin
How to Decrypt the Encrypted Files and Folders in Windows 10
 
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By using this method you can decrypt the files and folders for windows 10. Encrypted files and folders are meant to protect any intrusion or unwanted access for other users on your system. If you want to learn how to Encrypt the files and folders, then visit the following URL : https://www.youtube.com/watch?v=uF_ewHntpeg Once your files and folders are encrypted then no other user than you, can access them. Again in order to decrypt them you can use the method used in this tutorial. If you like the video, keep sharing it and post your valuable comments in the below comment box. Thank You :)
Views: 87874 Techno Math
How do I remove CryptoWall virus and get my files back without pay for CryptoWall decrypter
 
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(CryptoWall removal guide) What is CryptoWall? How to decrypt encrypted files? CryptoWall is a new variant of the ransomware CryptoLocker virus. Crypto Wall is for the most part the same as CryptoDefense, CryptorBit and Cryptolocker other than the name change and different filenames for the ransom instructions. When Crypto Wall is installed it will scan your computer for data files and encrypt them. When CryptoWall is installed it will scan your computer for data files and encrypt them. It will then create files containing ransom instructions in every folder that it had encrypted a file. These ransom notes are DECRYPT_INSTRUCTION.HTML, DECRYPT_INSTRUCTION.TXT, and the DECRYPT_INSTRUCTION URL shortcut to the decryption service. DECRYPT_INSTRUCTION: What happened to your files ? All of your files were protected by a strong encryption with RSA-2048 using CryptoWall. More information about the encryption keys using RSA-2048 can be found here: http://en.wikipedia.org/wiki/RSA_(cryptosystem) What does this mean ? This means that the structure and data within your files have been irrevocably changed, you will not be able to work with them, read them or see them, it is the same thing as losing them forever, but with our help, you can restore them. How did this happen ? Especially for you, on our server was generated the secret key pair RSA-2048 - public and private. All your files were encrypted with the public key, which has been transferred to your computer via the Internet. Decrypting of your files is only possible with the help of the private key and decrypt program, which is on our secret server. What do I do ? Alas, if you do not take the necessary measures for the specified time then the conditions for obtaining the private key will be changed. If you really value your data, then we suggest you do not waste valuable time searching for other solutions because they do not exist. ... Message presented in the CryptoWall ransom payment page: You did not pay in time for decryption, that's why the decryption price increases 2 times. At the moment, the cost of decrypting your files is 1000 USD/EUR. In case of failure to 04/06/14 - 11:36 your key will be deleted permanently and it will be impossible to decrypt your files. ... CryptoWall virus removal: Reboot your computer into Safe Mode. Delete the related file. How do I get my files back(decrypt) without pay for CryptoWall decrypter? Use Previous Versions to restore your files. Watch More virus removal videos at:https://www.youtube.com/user/MrRemoveVirus
Views: 517772 Mr. RemoveVirus
How To Encrypt And Decrypt Files Using OpenSSL On Ubuntu Linux
 
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How To Encrypt And Decrypt Files Using OpenSSL On Ubuntu Linux OpenSSL is a program and library that supports many different cryptographic operations, including: Symmetric key encryption Public/private key pair generation Public key encryption Hash functions Certificate creation Digital signatures Random number generation The most common cryptographic operation is encryption. Lets encrypt some files using selected symmetric key (conventional) ciphers such as DES, 3DES and AES. 🌸 Support channel & make donation : https://www.paypal.me/aminenina/5 🌸 Subscribe for more videos : Youtube: https://www.youtube.com/user/aminosninatos 🌸 Follow me On Social Media Facebook : https://www.facebook.com/aminosninatos/ *********************************************************************** 🌸 How To Convert Public Private Putty's ppk Keys To OpenSSH Keys On Ubuntu Linux https://youtu.be/3aApOFQL44o 🌸 How To Use GPG Private Public Keys To Encrypt And Encrypt Files On Ubuntu Linux https://youtu.be/I-4dcpTDWys 🌸 How To Encrypt And Decrypt Files Using Private Public Keys With OpenSSL On Ubuntu Linux https://youtu.be/g9XN1-bANKU 🌸 How To Encrypt And Decrypt Files Using OpenSSL On Ubuntu Linux https://youtu.be/YU1AI62khIY 🌸 How To Use MD5SUM To Verify Data Integrity On Ubuntu Linux https://youtu.be/V1fgjXRFB2k 🌸 How To Generate Random Password From The Command Line On Ubuntu Linux https://youtu.be/TQ4QMJWVd8U 🌸 Linux How To Crack And Recover A Password Protected Zip File https://youtu.be/C9a6BPxUN_4 🌸 Password cracking with John the Ripper on Linux https://youtu.be/KK2bNgX1mRA 🌸 Linux : HowTo Encrypt And Decrypt Files With A Password using GPG https://youtu.be/a91v1bz_ZU4 🌸 How To Secure Copy Files In Linux Using SCP Command https://youtu.be/3Y8pVDhc3RQ 🌸 How To Sync And Backup Files In Linux Using Rsync Command https://youtu.be/aIMbg7vG6Rg ***********************************************************************
Views: 1134 Liv4IT
Configure SSH Server for Private Key Authentication in Ubuntu - 2/5
 
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A tutorial on configuring SSH Server to Authenticate with Private/Public Keys using Ubuntu Linux. 2/5 in a series on SSH and key pair authentication http://www.danscourses.com/Linux-Fundamentals/how-to-install-ssh-in-ubuntu-388.html
Views: 35939 danscourses
How To Recover Your Ransomware Encrypted Data Files For Free
 
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This tutorial will show you three techniques that you can use to recover files that have been encrypted by ransomware viruses such as , CryptoLocker, CryptoWall, CTB-Locker, Locky, TeslaCrypt, Cerber3, CryptoDefense, Petra, TorrentLocker and many others.
Manually Remove "Your personal files are encrypted" by  Cryptowall/Cryptorbit/Cryptolocker & others
 
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Remove Cryptorbit, Cryptolocker, Cryptowall & others manually. No software required. I show you how to remove Cryptorbit but its the same exact steps to remove Cryptolocker as well as other similar infections. Follow me step by step. Pause this video if you need to. We will go into the registry but i will go slowly so pay attention. -First thing to do is go into you control panel and uninstall anything to do with Crypt. Some of you will have something in there, others will not. -Next we restart computer into "safe mode". Once your your computer starts to reboot back up, keep pressing the F8 key to get it in safe mode. Once there highlight and click "safe mode". -Once your computer is booted up and in safe mode click on the start button and type in "regedit" - Now, follow this exact path.. Hkey_current_User--software--microsoft--windows--current version--run- now look for Cryptorbit, right click it and press delete. And click yes to the prompt asking if you are sure you want to delete it. - Now click on the Start menu then click on "Administrator", then Appdata--Roaming-- then find and delete Cryptorbit. - Restart your computer as normal. And there you go. Congrats to you, you just did actually what these free programs will do except for adding additional malware on your computer. Please sub and Like if this worked for you. Thank you! Cyyptorbit Your personal files are encrypted. All files including videos, photos and documents, etc. on computer are encrypted. Encryption was produced using a unique public key generated for this computer. To decrypt files, you need to obtain the private key. The single copy of the private key, which will allow you to decrypt the files, located on a secret server on the Internet; the server will destroy the key after a time specified in this windows. After that, nobody and never will be to restore files. File decryption cost ~ $50. (some will say $200) In order to decrypt the files, open site 4sfxctgp53imlvzk.onion.to/index.php and follow the instruction. If 4sfxctgp53imlvzk.onion.to is not opening, please following steps below: 1. You must download and install this browser: http://www.torproject.org/projects/torbrowser.html.en 2. After installation, run the browser and enter the address: 4sfxctgp53imlvzk.onion.to/index.php 3. Follow the instructions on the web-site. We remind you that the sooner you do, the more changes are left to recover the files. Guaranteed recovery is provided within 10 days. http://barnegat-manahawkin.patch.com/groups/police-and-fire/p/prosecutor-warns-of-latest-home-computer-virus Prosecutor Warn of Latest Computer Virus
Views: 210500 iLuvTrading
Java prog#129. How to encrypt and decrypt data in Java Part 1
 
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------------------Online Courses to learn---------------------------- Java - https://bit.ly/2H6wqXk C++ - https://bit.ly/2q8VWl1 AngularJS - https://bit.ly/2qebsLu Python - https://bit.ly/2Eq0VSt C- https://bit.ly/2HfZ6L8 Android - https://bit.ly/2qaRSAS Linux - https://bit.ly/2IwOuqz AWS Certified Solutions Architect - https://bit.ly/2JrGoAF Modern React with Redux - https://bit.ly/2H6wDtA MySQL - https://bit.ly/2qcF63Z ----------------------Follow--------------------------------------------- My Website - http://www.codebind.com My Blog - https://goo.gl/Nd2pFn My Facebook Page - https://goo.gl/eLp2cQ Google+ - https://goo.gl/lvC5FX Twitter - https://twitter.com/ProgrammingKnow Pinterest - https://goo.gl/kCInUp Text Case Converter - https://goo.gl/pVpcwL -------------------------Stuff I use to make videos ------------------- Stuff I use to make videos Windows notebook – http://amzn.to/2zcXPyF Apple MacBook Pro – http://amzn.to/2BTJBZ7 Ubuntu notebook - https://amzn.to/2GE4giY Desktop - http://amzn.to/2zct252 Microphone – http://amzn.to/2zcYbW1 notebook mouse – http://amzn.to/2BVs4Q3 ------------------Facebook Links ---------------------------------------- http://fb.me/ProgrammingKnowledgeLearning/ http://fb.me/AndroidTutorialsForBeginners http://fb.me/Programmingknowledge http://fb.me/CppProgrammingLanguage http://fb.me/JavaTutorialsAndCode http://fb.me/SQLiteTutorial http://fb.me/UbuntuLinuxTutorials http://fb.me/EasyOnlineConverter Password Encryption.java JAVA ENCRYPTION/DECRYPTION PROGRAM HELP Encrypting and Decrypting Java Cryptography using Java in Netbeans IDE Cryptography using Java in Netbeans IDE Java Cryptography APIs Cryptography Encrypting and Decrypting a text file in java
Views: 104855 ProgrammingKnowledge
Public Key Cryptography w/ JAVA   (tutorial 06)  - Elgamal Digital Signature
 
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Website + download source code @ http://www.zaneacademy.com | RSA Digital Signature @ https://youtu.be/5MxeckDiC18 | Digital Signature Algorithm (DSA) @ https://youtu.be/hOFv79Fs5As
Views: 138 zaneacademy
Encrypt/Decrypt Files in C#
 
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Source Code Project http://microify.com/1Tgn
Views: 13428 Melardev
Delphi - RSA-1024 Encryption
 
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Delphi - RSA-1024 Encryption In this episode, we will be showing you how you can generate and use RSA 1024 Keys in Delphi to encrypt text with a public key and decrypt your text with the private key. Blog / Source code Download http://jugoo.co.uk/2018/03/delphi-rsa-1024-encryption-example-video-lockbox3/ So we will start off with a pre-made RSA unit and the Rad studios Delphi add-on LockBox3, This will be a great example for beginners and hobbyist coders from all ages from kids to adults, with the simplified pre-made units the easy to use function can be understood by anyone.
How to remove CryptoWall 3.0 virus (New version CryptoWall removal guide)
 
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CryptoWall3.0 removal guide. CryptoWall 3.0 (new version CryptoWall) is one of many ransomware trojans that encrypt the personal files on your computer and demand a bitcoin payment before you can restore them. Victims of the ransomware are given 168 hours (7 days) to pay $500 in Bitcoins if they want to recover their files. After the 7-day deadline, the amount increases to $1,000. The CryptoWall3.0 malware, distributed via spam and malvertising campaigns, helped cybercriminals make a lot of money. What is CryptoWall? CryptoWall is a file-encrypting ransomware program that was released around the end of April 2014 that targets all versions of Windows including Windows XP, Windows Vista, Windows 7, and Windows 8. In 2015, the malware developers released a new version of CryptoWall called CryptoWall 3.0, there aren’t any major differences between CryptoWall 3.0 and the previous variant. CryptoWall 3.0 will also create 3 files:HELP_DECRYPT.PNG, HELP_DECRYPT.URL, HELP_DECRYPT.HTML, HELP_DECRYPT.TXT. If infected with CryptoWall 3.0, HELP_DECRYPT.PNG, HELP_DECRYPT.URL, HELP_DECRYPT.HTML, HELP_DECRYPT.TXT files in each folder that files were encrypted and in the Windows desktop. The HELP_DECRYPT.TXT file contain information: What does this mean ? This means that the structure and data within your files have been irrevocably changed, you will not be able to work with them, read them or see them,it is the same thing as losing them forever, but with our help, you can restore them. How did this happen ? Especially for you, on our server was generated the secret key pair RSA-2048 - public and private. All your files were encrypted with the public key, which has been transferred to your computer via the Internet. Decrypting of your files is only possible with the help of the private key and decrypt program, which is on our secret server. ... For more specific instructions, please visit your personal home page, there are a few different addresses pointing to your page below: 1.http://paytoc4gtpn5czl2.torforall.com/xxx 2.http://paytoc4gtpn5czl2.torman2.com/xxx 3.http://paytoc4gtpn5czl2.torwoman.com/xxx How to remove CryptoWall 3.0? Reboot your computer into Safe Mode remove associated CryptoWall Files. How to decrypt files encrypted by CryptoWall3.0? Unfortunately at this time there is no way to retrieve the private key that can be used to decrypt your files without paying the ransom. You can try to restore the files encrypted by CryptoWall Using Windows Previous Versions.Good luck for you :) Learn more about how to remove computer virus ►https://www.youtube.com/user/MrRemoveVirus
Views: 404787 Mr. RemoveVirus
Using Kryptos to make and use public and private keys
 
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Using the program Kryptos to create a public key and a private key, and using those keys to encrypt a file and decrypt a file.
Views: 34 Cuyle Borden
Crypto (RSA 1) Basic CTF | Amrita Inctf Challenges | Solved By Python | Easy CTF Writeups..
 
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Here I've Solved three Challenge from Crypto (RSA intro). The challange was Quick I Welcome Suggestions
Views: 174 Satyam Gupta
How to remove RSA-4096 ransomware and restore encrypted files
 
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In the video I try to show how to delete RSA-4096 virus and to restore system to the previous checkpoint. Source article: http://pcfixhelp.net/viruses/2795-how-to-remove-rsa-4096-virus-and-restore-encrypted-files RSA-4096 is a new ransomware that use RSA algorithm to encrypt important information. It corrupts txt, jpeg, bmp and other files and adds to each folder the files with announcements about encrypted information. Antivirus tools: Dr. Web, Avast, Kaspersky, Spyhunter SpyHunter download link: http://pcfixhelp.net/removal-tool Decryptor (not 100% result): Kaspersky ransomware decryptor https://noransom.kaspersky.com/ Programs that restore files: Recuva, ShadowBlade
Views: 131641 PC Fix Help
Bitcoin Hardware Wallet & Encrypted Secure Messaging and File Transfer by DigiSafeGuard
 
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Secure your crypto currency private keys. Send and receives encrypted messages and anonymous file transfers. For real security and privacy, not just a gimmick! Using DigiSafeGuard NO REMOTE HACKER CAN GET IN!
Views: 1641 Securypto Blockchain
What is Encryption , Decryption & Public Key Encryption ? | Tamil Tech Explained
 
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என்கிரிப்சன் என்றால் என்ன ? தமிழ் டெக் What is Encryption, Decryption & Public Key Encryption? | Tamil Tech Explained.Like and Share this Video, Subscribe and Support us . More Tamil Tech Explained : https://goo.gl/Wxeip0 ****************************************************************** JOIN TAMIL TECH & Support us : Website : www.TamilTechOfficial.com YouTube : https://youtube.com/TamilTechOfficial Facebook: https://facebook.com/TamilTechOfficial/ Twitter: https://twitter.com/TamilTechOffici instagram : http://instagram.com/TamilTechOfficial ****************************************************************** இது போல இன்னும் பல tech வீடியோ உங்கள்ளுக்காக . SUBSCRIBE செய்யவும் . Check Other Videos of TAMIL TECH : FULL PLAYLIST : http://goo.gl/hKNNFX Tamil Tech News :https://goo.gl/0leUcj Tamil Tech Tips : https://goo.gl/nEdDeZ VR Series : https://goo.gl/iRPZ2i YouTuber Series : https://goo.gl/YvWnCX Tamil Tech Top APP Series : https://goo.gl/2mnxV9 Top Smartphones : https://goo.gl/SuXYhz Best Buy Tips : https://goo.gl/BTKvc9 My Opinions : https://goo.gl/41WgxA Whatsapp Tips & Tricks : https://goo.gl/A1qRo4 Super Gadget Unboxing & Review : https://goo.gl/edTy52 Android TIps & Tricks : https://goo.gl/OeD4m0 Real or Fake Series : https://goo.gl/sR9EH4 Tamil Tech Super app : https://goo.gl/C7872Y Tamil Tech Achivement : https://goo.gl/6rbl8c Tamil Tech Live QnA :https://goo.gl/LVFhyF Tamil Tech Prime : https://goo.gl/wSH6qD How to Tamil : https://goo.gl/npdNGR Tamil Tech Unboxng : https://goo.gl/KnhwJt ---------------------------------------­----------------------------------------­--------------------- My ENGLISH TECH CHANNEL - HOWISIT : YOUTUBE : https://www.youtube.com/c/howisitin Facebook: https://www.facebook.com/howisit.in , Twitter: https://www.twitter.com/howisitin , Google plus: https://plus.google.com/u/howisitin, website : http://howisit.in
Extended Euclidean Algorithm and Inverse Modulo Tutorial
 
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Using EA and EEA to solve inverse mod.
Views: 413765 Emily Jane
How to Encrypt and Decrypt using Openssl on windows
 
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This is an educational video showing how to encrypt and decrypt data using openssl on windows
Views: 8043 salim awadhi
what is encryption , encryption keys , encryption software || cyber security in hindi
 
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In this video I have described what is Encryption , encryption keys and types of Encryption , Use of encryption software , Cryptography is the science of using mathematics to encrypt and decrypt data. Cryptography enables you to store sensitive information or transmit it across insecure networks (like the Internet) so that it cannot be read by anyone except the intended recipient. Encryption is used to ensure that information is hidden from anyone for whom it is not intended, even those who can see the encrypted data. The process of reverting cipher text to its original plaintext is called decryption A key is a value that works with a cryptographic algorithm to produce a specific cipher text. Keys are basically very, very, very big numbers. Key size is measured in bits In conventional cryptography, also called secret-key or symmetric-key encryption, the same key is used both for encryption and decryption. The figure below is an illustration of the conventional encryption process. Public key cryptography is an asymmetric scheme that uses a pair of keys: a public key, which encrypts data, and a corresponding private key, or secret key for decryption Each user has a key pair with him. The public key is published to the world while the private key is kept secret. Anyone with a copy of the public key can then encrypt information that only the person having the corresponding private key can read what is encryption , encryption keys , encryption software || cyber security in hindi website :- http://pareshtech.blogspot.com you tube - cyber support please like comment and subscribe my you tube channel
Views: 185 cyber support
rsa encryption decryption online
 
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https://8gwifi.org/rsafunctions.jsp The RSA Algorithm The Rivest-Shamir-Adleman (RSA) algorithm is one of the most popular and secure public-key encryption methods. The algorithm capitalizes on the fact that there is no efficient way to factor very large (100-200 digit) numbers RSA encryption usually is only used for messages that fit into one block. A 1024-bit RSA key invocation can encrypt a message up to 117 bytes, and results in a 128-byte value A 2048-bit RSA key invocation can encrypt a message up to 245 bytes RSA, as defined by PKCS#1, encrypts "messages" of limited size,the maximum size of data which can be encrypted with RSA is 245 bytes. No more
Views: 129 Zariga Tongy
SCOM0411 - Sign & Encrypt Emails and Files on your Mac with GPGTools
 
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Without being overly dramatic, recent events have shown that your private data may not be as private as you think. Storing any unencrypted data or emails on remote services may eventually be accessed and read by official and unofficial prying eyes. The tutorial takes you through the simple process of installing the Open Sourced GPGTools including GPG Mail 2. Its much simpler to setup than you might think, and once setup, signing and encrypting email is as easy as clicking a button. Even if you don't intend to encrypt all your emails, the tutorial shows you how to get your own public and private keys, so other people can send you signed and encrypted emails and files. This week, I demonstrate just how easy it is to digitally sign and encrypt your email with a strong 2048-bit RSA key, so you can prove who sent it and restrict decoding to just those you intend. Not just emails, I also show you how to sign and encrypt files too, all by the use of a simple suite of tools. The full tutorial covers: * GPG Tools * Installation * Generating a Key Pair * Sending an Encrypted & Signed Email * Searching For Public Keys * GPG Suite Preferences * Adding Multiple eMail Addresses to a Key * Using OpenPGP Services * GPGTools Wrap Up * ScreenCastsOnline Monthly Magazine * New iPhone Version * New Features
Encryption for EveryBody - Encryption Let me Count the Ways!
 
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In cryptography, encryption is the process of encoding messages (or information) in such a way that eavesdroppers or hackers cannot read it, but that authorized parties can.[1]:374 In an encryption scheme, the message or information (referred to as plaintext) is encrypted using an encryption algorithm, turning it into an unreadable ciphertext (ibid.). This is usually done with the use of an encryption key, which specifies how the message is to be encoded. Any adversary that can see the ciphertext should not be able to determine anything about the original message. An authorized party, however, is able to decode the ciphertext using a decryption algorithm, that usually requires a secret decryption key, that adversaries do not have access to. For technical reasons, an encryption scheme usually needs a key-generation algorithm to randomly produce keys. There are two basic types of encryption schemes: Symmetric-key and public-key encryption.[1]:375-376 In symmetric-key schemes, the encryption and decryption keys are the same. Thus communicating parties must agree on a secret key before they wish to communicate. In public-key schemes, the encryption key is published for anyone to use and encrypt messages. However, only the receiving party has access to the decryption key and is capable of reading the encrypted messages.[2] Public-key encryption is a relatively recent invention: historically, all encryption schemes have been symmetric-key (also called private-key) schemes.[1]:478 Encryption has long been used by militaries and governments to facilitate secret communication. It is now commonly used in protecting information within many kinds of civilian systems. For example, the Computer Security Institute reported that in 2007, 71% of companies surveyed utilized encryption for some of their data in transit, and 53% utilized encryption for some of their data in storage.[3] Encryption can be used to protect data "at rest", such as files on computers and storage devices (e.g. USB flash drives). In recent years there have been numerous reports of confidential data such as customers' personal records being exposed through loss or theft of laptops or backup drives. Encrypting such files at rest helps protect them should physical security measures fail. Digital rights management systems which prevent unauthorized use or reproduction of copyrighted material and protect software against reverse engineering (see also copy protection) is another somewhat different example of using encryption on data at rest.
Views: 470 ITGoodGuy
Secret - Encrypt and Decrypt - Claim Back Your Privacy
 
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http://www.autoclickbots.com/product/secret/ With the levels of hacking around the world rising like email hacking, cryptocurrency keys storage, personal information theft and worrying about sending and receiving sensitive information from friends and colleagues we have come to accept that our privacy is fast becoming extinct. What if there was an easy to use solution that anyone with no encryption skills can use to give us back some of that privacy and security, .. A solution that we could use to instantly encrypt or decrypt a private message, cryptocurrency keys and other information at the click of a button. Secret allows you to do just that. Set your Secret Key, type your message/data or use a pre written text file and your done. Secret takes the worry out of storing and sending private information. If you're looking for a quick-fix security solution, Secret could be what you need. This little app certainly doesn't look anything special, but it's surprisingly quick and effective. As long as the sender and recipient of the encrypted message/files has the app installed, it's a pretty good option. Easy To Use Secret is incredibally easy to use, simply set your secret Key, select the files you want encrypted and location then hit the Encrypt button from within the interface itself. Multiple Files at Once or Super Quick Feature Not only can Secret Encrypt and Decrypt 100's of txt files in a second, The Quick Secret and Quick Open Secret give you the option to process messages on the fly making it super quick to send an ecrypted message or decrypt a message received without leaving any trace or files. Very Secure but Affordable Ultimately, if you do a lot of simple file encryption, Secret will make your life easier and more importantly more secure and private. That said, Secret is compact, functional and, especially if the recipient of the encrypted message/files also has the app installed, it's an all-round good and affordable option. Benefits of using Secret : Add extra protection to Passwords or Crypto Private Keys Safely exchange information by email - without revealing your password or sensitive information. Once the document is saved, nobody can decrypt it without the correct Secret Key set by the user. State of the art encryption behind a simple interface. Powerful AES 256 Encryption Secret may be as easy to use as your favorite word processor, but behind the scenes it uses powerful AES 256 encryption to ensure your private information cannot be read by others. Secret isn't fancy, but it does get a basic job done, and well.
Views: 1284 AutoClickBots
[ZDir-C++ #3]: advanced RSA encryption, using C++ with the Z DIrectory (tutorial 3)
 
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Here we see that although the underlying cipher algorithm is very different from that in video #2 (ROT-13), the source code is almost identical. Z Directory interfaces have been made as simple and standardized as possible. RSA is a popular, modern, heavy-duty encryption algorithm. The Z Directory is freely available for download here: http://www.vettrasoft.com/zd_get.php
Views: 5017 Garth Vettraman