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Decrypt ctf?
can be arranged into 5 columns: ourfriendgoodoldsampletext. When you need help with a difficult problem, it’s always wise to turn to an expert. By default, public key is selected. Something about Ndh's crypto challenges really make me want to keep learning. You can find them in the site. Password protected ZIP file is not a good way to provide confidentiality of documents. As the name suggests, you are challenged with abusing an rsa oracle to decode a password and decrypt a ciphertext. **get encrypted flag** sends us the flag, encrypted with AES. Healthy money management techniques are a key to financial stability and longterm wealth management. ## Challenge description: Let ```n, e``` be the public parameters of some (1024-bit) RSA key-pair, and let ```d``` be the private key. Cryptography is the process of encoding or decoding messages and data. In this challenge, you will repeat the exercise of capturing an HTTPS website and the session keys, but this time in Linux. Home 1 In this lesson we will cover a few cryptographic concepts along with the related fields of digital forensics and steganography. This is an interactive proof-of-concept of the Dual_EC_DRBG backdoor. In order to be able to decrypt the cipher text, we should be able to exploit some inherent mathematical vulnerability in the prime factors used to compute the public modulus n. Let's look at the encryption function `r`: Help the channel grow with a Like, Comment, & Subscribe! ️ Support https://j-h. While XOR encrypting one image with a key is quite secure, repeating the same key twice makes it possible to find out the contents of the original, unencrypted images. "CTF Online Encrypt Decrypt Tools" is a robust web-based platform specially curated for computer security enthusiasts and participants of CTF (Capture The Flag). Here in a more ordered fashion: C = ciphertext. The same can also be found in the decrypted trafficexe encrypted the file lab10. Given that (M ** 3) is only "barely" larger than n, it shouldn't take long: import gmpy2 n =. If you cannot produce your own Morse code sounds then try using my Morse code translator to play or download some. In this challenge we were given a TAR archive decrypt_the_undecryptable. The custom_encryption. This idea was first proposed by Quisquater and Couvreur [6]. The mode we are concerned with, is analysis of packet capture files. Expert Advice On Improving Your Home All Projects F. ⚡ Automatically decrypt encryptions without knowing the key or cipher, decode encodings, and crack hashes ⚡. To go further we need to understand how that works. Another security issue in ZIP file is that PKZIP Stream Cipher is vulnerable to a know plaintext attack[1,2]. By assuming that both files have been encrypted with the same key, we can figure the following equations. a = open( "easyctf_serialread() CtfCryptoTool. "In cryptography, a padding oracle attack is an. \n Writeup \n. Hacking 101; Hardware & Soldering; ICS; Incident Response; Internet of Things (IoT) Locks & Safes; Password Cracking; 4 OSINT CTF. Rot 13 is a encryption scheme used to encrypt infomation It takes a single character and shift 13 places in the alphabet. SHA-2 (Secure Hash Algorithm 2) is a set of cryptographic hash functions designed by the United States National Security Agency (NSA). pcap About Step 4 - Cracking the PGP Message. This writeup showcased how to decrypt an RSA-encrypted message by. To decrypt the file, they need their private key and your public key. "main" snippet of code from encrypt We see here, quite clearly, the process of encryption: A. zh3r0{B10w_7h3Fish!!} Solutions to Net-Force steganography CTF challenges Pranshu Bajpai. Ideal for computer security enthusiasts and CTF participants for ROT13 Encrypting and Decrypting. Read about the history of hearses and how they ended up looking the way they do Have you ever thought about starting a coworking space? It's difficult to get funded, never mind turn a profit. Hi guys, this time I joined HITCON CTF with my team: World Wide Union, but because of no forensic challenges, I had to go here and try to solve some challenges. Triple DES or DESede , a symmetric-key algorithm for the encryption of electronic data, is the successor of DES (Data Encryption Standard) and provides more secure encryption than DES. This is a Crypto CTF writeup from "CryptoHack The challenge provides us with this question Now let's see what happens when we try to decrypt this with the Flag Format "Flag1337{" See, how we are able to retrieve the key using the flag format. Task 9: Left or Right. Manage code changes Attacking RSA for fun and CTF points - part 2 Posted on 25/05/2018 25/05/2018 by ENOENT in Posts between multiple persons is a bad practice because an external attacker can intercept two identical messages and decrypt them. To encode something, you need to pick the "a" and it must be coprime with the length of the alphabet. If you’ve become the victim of an attack, these four decrypti. BitLocker CTF Latest Mar 4, 2023 Footer The value A A is an integer such as A×A = 1 mod 26 A × A = 1 mod 26 (with 26 26 the alphabet size). png"- what we're looking. Can someone explain how to decrypt c c if ϕ(n) ϕ ( n) and e e aren't relatively prime? This is the exact dupe : In RSA encryption, why does the public exponent (usually, 'e. ct Your DataEncryption is the act of changing information in such a way that only people who should be allowed to see the data are able to understand what the in The encrypted data can ideally only be read by trusted parties and look like a mess to e The simplest and oldest form of encryption. Then, you can use the cipher type to be used for the encryption. Yes. Nevertheless, many messages could not be decrypted until today It starts off by printing exactly this long message to the standard output, and asks for an input key. Simply enter your letters (in this case CTF) into the letter box (YOUR TILES) and press the nice red SEARCH button. Multibyte XOR gets exponentially harder the longer the key, but if the encrypted text is long enough, character frequency analysis is a viable method to find the key. Cryptography is the process of encoding or decoding messages and data. Simple Python scripts to help you to decrypt RSA-encrypted datapy A simple Python script which will decrypt RSA data if you know n, p, q and e values; rsa_bruteforce. MODE_CBC, iv) return aes. The challenge we are facing is, given some ciphertext ```ct = (pt ** e) % n``` (corresponding to a. The custom_encryption. CTF writeups, Plain-t uh Image. This will generate a list of the words you can make from letters in ctf. A CTF Enigma is a cybersecurity riddle that challenges participants to solve complex puzzles and find hidden clues within a given scenario. The decrypted PDF file I definitely enjoyed this CTF. For example, the number of columns is 5, and our key is 23541: Our friend good old sample text. Anyway, you can simply cut your file in chunks, encrypt them and encode them in a way you can retrieve the chunks, i, by creating a new line for each encrypted chunks. Closed 3 years ago. This pre-master secret is encrypted with the public RSA key of the server. If the strings are really AES encrypted, we need the key to decrypt it. It requires two things, data, and key, and when XOR operation is applied on both the operands i. Wireshark is a network protocol analyzer which is often used in CTF challenges to look at recorded network traffic. In this case, for our first and only trial, since @topaco has already determined that AES is the encryption algorithm used by the challenge author, we will use CyberChef's AES decryption operation, as shown below: This operation accepts Key and IV in base64 format so we don't even need to decode them manually. At the end of the file is the output of the encryption, with some missing characters. Tools such as mediainfo and exiftool are essential for inspecting file metadata and identifying content types. Flag. Aug 15, 2020 · There is a good source of RSA encryption and decryption on this Wiki. Goals and Objectives. The mode we are concerned with, is analysis of packet capture files. What I do know: starts with 6 character alphanumeric passphrase passphrase is hashed by md5, or SHA1/2 AES128/256 encrypti. Case-sensitive search Show only apps containing Python code. CTF writeups, RSA - 2. rsactftool 1. 3/6/24, 9:18 AM Capture the Flag (CTF) Challenges Instructions: Scroll down to review and begin the challenges. The Sheraton Kauai Coconut Beach Resort in Kauai, Hawaii, got a major makeover right b. - Pavan-Kumar-7/xor-decrypt_ctf picoCTF is a free computer security education program with original content built on a capture-the-flag framework created by security and privacy experts at Carnegie Mellon University. So I then opened up the python interpreter and went ahead to write the code I needed. This is an RSA challenge with N and e obscured by hiding the last 8 bits of each. This string resembles sensitive information and is known as a flag. Excellent service, great location: a hotel review of the Sheraton Kauai Coconut Beach Resort. CTF-CryptoTool is a tool written in python, for breaking crypto text of CTF challenges. 23andme careers What would the world look like if encryption were outlawed? If three Republican senators get their wa. Here it is: cipher = AESMODE_ECB ) return cipher. Project Bullrun also has a good overview of the subject. Ideal for computer security enthusiasts and CTF participants for ROT13 Encrypting and Decrypting. We have been monitoring public webcams, then doing facial recognition. By default, public key is selected. Disarm Me CTF: Hack, Decrypt, Disable. For example, the number of columns is 5, and our key is 23541: Our friend good old sample text. Web app offering modular conversion, encoding and encryption online. HSBC sub-accounts are a unique way for individuals to manage their money as th. CTF challenges that amount to finding a steganographic needle in a haystack are rarely enlightening, let alone enjoyable. From the contents of the file it is clear that we are given the public modulus, n the encryption exponent e and a cipher text. aluminum webbed lawn chair We can extract those and verify them using file command. data -out un_encrypted In this challenge we are facing a PNG file with no clue. Translations are done in the browser without any server interaction. Free software LockNote allows you to write, save, and automatically encrypt and decrypt the notes you write from a stand-alone, no-installation-necessary program Colorado tick fever (CTF) is a viral infection. Applying the key: ⚡ Automatically decrypt encryptions without knowing the key or cipher, decode encodings, and crack hashes ⚡ Topics python natural-language-processing cryptography cipher cpp hacking artificial-intelligence pentesting ctf hashes encodings decryption hacktoberfest ctf-tools encryptions deep-neural-network cyberchef-magic Jul 20, 2020 · Example 1: You are given a file named rubiks Running the file command reveals the following information. I have provided a link to the CyberDefenders website at the end for anyone. To do so, perform the following procedures: Capturing SSL traffic and generating the handshake secret on the BIG-IP system. CTF writeups, RSA - 2. rsactftool 1. Unfortunately, the flag isn't quite usable as of yet. 2022. We will present our automated camera system which tracks people and the things they do. Stay tuned for version 2 This corresponds the task name cup-of-tea so we in the right direction. Receive Stories from @alexadam The Windows operating system lets you encrypt and decrypt files on your desktop. An online tool for the automatic encryption and decryption of Vigenere ciphers is available for free. pcap from HTB Uni CTF Quals 2021 or, use the password python3 winrm_decrypt/capture. Simple Python scripts to help you to decrypt RSA-encrypted datapy A simple Python script which will decrypt RSA data if you know n, p, q and e values; rsa_bruteforce. The server has four commands that we can use: 1. canela skin pov User-Agent — It's the client-side browser type Response — Generally shown as "response in frame: packet number And then, you click on this frame to read the response 3. To go further we need to understand how that works. Participants are usually given a cipher or encryption algorithm, and they must use their knowledge of cryptography to crack the code and obtain the hidden information. A CTF Enigma is a cybersecurity riddle that challenges participants to solve complex puzzles and find hidden clues within a given scenario. Don't use Windows to solve crypto challenges. It has been described as the "Usenet equivalent printing an answer to a quiz upside down" as it provides virtually no cryptographic security Learn how to hide and reveal data in images with StegOnline, a free online tool for steganography and LSB analysis. I read a lot about pdfs after this initial discovery, and realized that in order to properly run this pdf through a password cracker, I would need to get the password hash from the document. Decryption is a slightly different formula, d (x) = a-1(x - b) mod m. This function simply iterates over all files in the Files directory, and then calls function FUN_00401220 for every file. pem: An RSA public key in PEM file formatsage: A file with sage codeenc: From the sage file and the file name it is suggested, that this is the encrypted flag. During the investigation they found this suspicous file. Classic cipher / Simple decoder online tool. I'm doing a CTF and have been stumped on what I thought would be a simple question. Multibyte XOR Encryption. After filtering, it's the first session. CTF Archive. To use the tcpdump command to capture. This fingerprint therefore makes it possible to identify the initial data, which is very practical in computer science and cryptography. Dconstruct CTF 2021 is the first CTF hosted by GDSCVIT from the Vellore Institute of Technology in Tamil Nadu. The challenge we are facing is, given some ciphertext ```ct = (pt ** e) % n``` (corresponding to a. Learn how to create and solve CTF challenges with Katana, a repository of suggestions and code by JohnHammond. Indices Commodities Currencies Stocks TRANSAMERICA SHORT/INTERMEDIATE HORIZON - CTF- Performance charts including intraday, historical charts and prices and keydata.
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Helping you find the best gutter companies for the job. CTF RSA decrypt using N, c, e Crack the value of m in RSA *quickly* given n, e and c, given the condition that c == pow(m, e, n) Related Multiple encryption with Rabin cryptosystem Crypto 314 - NSA basement - Writeup. The message provided is picoCTF {dspttjohuifsvcjdpobqjtwtvk}. img2 ^ key = enc_img2. It is often used in CTF (Capture The Flag) competitions for network-based challenges that require the identification and exploitation of open ports or services These operations include simple encoding like XOR and Base64, more complex encryption like AES, DES and Blowfish, creating binary and hexdumps, compression and decompression of data. They provided the Windows Event Log (. And because that's not enough, an internal attacker can compute the private key of every other person in the. ## Challenge description: Let ```n, e``` be the public parameters of some (1024-bit) RSA key-pair, and let ```d``` be the private key. In today’s digital age, data security is of utmost importance. Each state has its own favorite Halloween treat, but candy corn was the most common pick. img2 ^ key = enc_img2. we have access to a encryption and decryption oracle. Feb 19, 2021 · Complex RSA (BackdoorCTF20217) — Double encryption with identical N with large e The problem gave us a cipher that was encrypted twice by 2 public keys. "In cryptography, a padding oracle attack is an. \n Writeup \n. Tool to parse the Group Policy Preferences XML file which extracts the username and decrypts the cpassword attribute. data -out un_encrypted In this challenge we are facing a PNG file with no clue. It was base58 encryption. You will find the TCP session for the website, and then decrypt it with the session keys. py) and the ciphertext. encrypt(plain) that it is using AES in ECB mode to encrypt the message. I read a lot about pdfs after this initial discovery, and realized that in order to properly run this pdf through a password cracker, I would need to get the password hash from the document. jane lucier videos Learn about this history of gold. Risk and compliance startup LogicGate has confirmed a data breach "Send me 100 Bitcoins and you will get my private key to decrypt any harddisk (except boot disks). Crypto 166 - Alone in the dark - Writeup. With this New American Consumer, there's really. Sep 17, 2019 · Caesar cipher decryption tool. To Decrypt: openssl enc -d -aes-256-cbc -in encrypted. You will find the TCP session for the website, and then decrypt it with the session keys. A free online tool for AES encryption and decryption. LiveOverflow recently had an excellent video on file format tricks and concludes with a similar sentiment. CTF writeups, Plain-t uh Image. Expert Advice On Improving Your Home All Projects Feature. NahamCon CTF 2022 Securinets CTF Quals 2022SG CTF There is a twist though, we padded the plaintext so that (M ** e) is just barely larger than N. Since AES CTR produces a different cipher each time for the same password and plain text due to the unique key, how is it possible for the decryption function to produce the same. It has been described as the "Usenet equivalent printing an answer to a quiz upside down" as it provides virtually no cryptographic security Learn how to hide and reveal data in images with StegOnline, a free online tool for steganography and LSB analysis. lakota horse trailers for sale But since then, victims of subsequent versions of GandCrab and its 'ransomware. The Advanced Encryption Standard, or AES, is a widely used block cipher. Project Bullrun also has a good overview of the subject. py) and the ciphertext. Single Byte XOR Encryption is trivial to bruteforce as there are only 255 key combinations to try. From this, we need to check the files in "files" directory to see which one is matched Use sha256sum to cross check each files See the contents of the targeted file Utilize the. Let's open wireshark to see what we get, on opening wireshark we find out there are multiple UDP, TCP & HTTP Packets. This is a red team-style mixed capture the flag event that will require you and your team to actively break into an internal network as if you were a hacker. Since AES CTR mode uses a unique IV and counter to produce the key to XOR with the plain text to get the ciphertext, the question is so as to how decryption is done. For example, the number of columns is 5, and our key is 23541: Our friend good old sample text. I spent as much time in crypto as I did stocks in 2021, and now we're getting an 'emotional reset,' so let's look ahead to 2022 with clear eyes. At the time of publ. This fingerprint therefore makes it possible to identify the initial data, which is very practical in computer science and cryptography. The values n and e are public keys, and the c value is a ciphertext. Multibyte XOR Encryption. As Topaco said, it is not a good idea, since time-consuming, etc. urandom( 24 ) iv = os. lowes surge protectors Learn about this history of gold. So you can then use these known bytes of block 1 to retrieve the plaintext of block 2 by using the "opposite of XOR". Solution: Type http in the Wireshark filter bar. Contribute to p4-team/ctf development by creating an account on GitHub. From the contents of the file it is clear that we are given the public modulus, n the encryption exponent e and a cipher text. p = 97 g = 31 a = 88 b. The aim is to attract students, lecturers, and interested individuals. Can someone explain how to decrypt c c if ϕ(n) ϕ ( n) and e e aren't relatively prime? This is the exact dupe : In RSA encryption, why does the public exponent (usually, 'e. This is an interactive proof-of-concept of the Dual_EC_DRBG backdoor. we can easily see that are public. The public key can decrypt something that was encrypted using the private key. encrypt any plaintext we want and 2. While older cryptosystems such as Caesar cipher depended on the secrecy of the encrypting algorithm itself, modern cryptosystems assume adversarial knowledge of algorithm and the cryptosystem. This write-up will cover the solution for the medium forensics challenge named Seized.
We will present our automated camera system which tracks people and the things they do. Translations are done in the browser without any server interaction. Brute force attack on small secret CRT-Exponents. Classic cipher / Simple decoder online tool. So the user can also reduce decryption time by disabling unnecessary cascades in the Passware Kit settings. nitter rss We can simply enter the hashes, and we get: From there i fount one zwsp means Zero-Width-Space. In this challenge, you will repeat the exercise of capturing an HTTPS website and the session keys, but this time in Linux. He grabbed the following info: PGP Fingerprint: 5071 62 CE 550 A 9 B5D. CyberChef encourages both technical and non-technical people to explore data formats, encryption and compression Digital data comes in all shapes, sizes and formats in the modern world - CyberChef helps to make sense of this data all on one easy-to-use platform Solution. This can also be written as M**3 = tn + c for some t. We can assume that the password entered is compared to the correct password via strcmp(). Decryption is a slightly different formula, d (x) = a-1(x - b) mod m. Participating in CTF competitions is an excellent way for beginners to learn and practice cybersecurity skills in a hands-on and engaging manner. multi unit properties for sale generate (1024, random_generator) #generate pub and priv key publickey = key. RSA. Overview RSA is our first asymmetric key encryption algorithm, meaning the key used for encryption is different than the key used for decryption. just before we start in 2021 challenges, there is a single. Writeup by ykaridi / CSCML. Jul 5, 2023 · [[CBC-mode]] Decryption: pt1 = D(ct1) ^ iv pt2 = D(ct2) ^ ct1 pt3 = D(ct3) ^ ct2 Now if we encrypt a plaintext to get a ciphertext, we can then alter that ciphertext before decrypting it again to. or import an existing one with: $ gpg --import [keyfile] To then verify it, make sure to first have the public key from the sender imported: $ gpg --import sender Afterward, you can verify any messages they send came from that key: $ gpg --verify msgasc gpg: Signature made Tue Jun 20 13:51:07 2023 CEST gpg: using RSA key. So it was a short binary given, on analyzing we found it was using aes_cbc_256 CTF writeups, decrypto-3 This was the second RSA challenge and was a simple cube root attack. vifp number The answer is: yes, we can! 💪 We can also decrypt Kerberos exchanges, TGTs and service tickets, etc! And same for NTLM/NTLMSSP, as I will. It has been described as the "Usenet equivalent printing an answer to a quiz upside down" as it provides virtually no cryptographic security Learn how to hide and reveal data in images with StegOnline, a free online tool for steganography and LSB analysis. Participants capture these flags using their ethical hacking skills and put these flags into the CTF. How to Decrypt 802 Wireshark can decrypt WEP and WPA/WPA2/WPA3 in pre-shared (or personal) mode. Visit Original writeup for better formatting. The next 4 packets belong to TLS handshaking. py to encrypt your message. CTF-CryptoTool is a tool written in python, for breaking crypto text of CTF challenges.
After 48 hours of hacking, and a near photo finish, we walked out of the CTF room in 3rd place The first was an encryption challenge in. # decrypt the b64 at the end and put it in the flag format afterwards. One common cause of such breaches is when encryption fails, leaving sensitiv. These logs are created using a Man in the Middle (MitM) technique when the pcap is originally recorded. Armed with the publicpem keys, I dived into the world of numbers and modular arithmetic The Enigmatic flag. While XOR encrypting one image with a key is quite secure, repeating the same key twice makes it possible to find out the contents of the original, unencrypted images. Common CTF Challenges is a collection of tools and resources to help individuals improve their Capture the Flag (CTF) skills Encryption is a way to encode a message so that its contents are protected from prying eyes. After knowing this, we searched for an RSA decoder. (C2) If the remainder will be odd because is odd. Another security issue in ZIP file is that PKZIP Stream Cipher is vulnerable to a know plaintext attack[1,2]. It turned out that it was a… Tool to decrypt / encrypt with hash functions (MD5, SHA1, SHA256, bcrypt, etc. I was recently researching HTTP/2. hoka for men I've tried using openssl and written a python script that strips the header, then adds it again at the end after the contents are decrypted, but no luck. Encryption uses the formula m e = c mod n where e and n are provided by the public key, m stands for the original message (what you're trying to crack in a challenge), and c is the resulting ciphertext. Then an exponent e is chosen (usually 3 or 65537) so that it is coprime with ϕ ( n) = ( p. First, replace all occurrences of the string \n with actual newline characters in the decoded object stream output from pdf-parser: Second, saving the replaced object stream contents into a text file like graphics. Ransomware Decryption Tool Options. - t0thkr1s/gpp-decrypt Mar 26, 2024 · Mike (Rem) rsa_oracle was a challenge in PicoCTF 2024 in the cryptography category. Applying the key: ⚡ Automatically decrypt encryptions without knowing the key or cipher, decode encodings, and crack hashes ⚡ Topics python natural-language-processing cryptography cipher cpp hacking artificial-intelligence pentesting ctf hashes encodings decryption hacktoberfest ctf-tools encryptions deep-neural-network cyberchef-magic The following are the tools used in steganography: StegCracker: A tool for cracking steganography-encoded files. So let's have a look. Exploit: ``` from Crypto. printable, giving us the decrypted text Crypto 500 (Blowfish/DES) # DES (Crypto 500) The general idea was simple - the authors used double encryption with DES and Blowfish and the task was to decode the message. It is also a block cipher algorithm, which means the algorithm processes the data in fixed-size blocks. Rot 13 is a encryption scheme used to encrypt infomation It takes a single character and shift 13 places in the alphabet. Also works for the cipher which does not have a key. by josephsurin / skateboarding dog. So i want to decrypt the Unicode encoded characters of get the flag. We can get the flag using this site. and we get the flag. So I then opened up the python interpreter and went ahead to write the code I needed. LiveOverflow recently had an excellent video on file format tricks and concludes with a similar sentiment. img1 ^ key = enc_img1. Get ratings and reviews for the top 11 pest companies in Monroe, MI. peugeot scooter parts With sensitive information being transmitted across various platforms, it is. Rating: 5 The challenge involves decrypting a flag encrypted with aes-cbc with an "almost known key" (we get the key except for the last 2 bytes) but an unknown IV. Ideal for computer security enthusiasts and CTF participants for ROT13 Encrypting and Decrypting. You can find the ciphertext in /problems/caesar_5_d706b250ed3c6d2d2c72155de301a2f1 on the shell server The ruby script. Example 2: Jan 26, 2024 · Cryptography is the reason we can use banking apps, transmit sensitive information over the web, and in general protect our privacy. image (crypto, 620p, 27 solved) ``` Hey! I encrypted this photo using simple XOR, but im sure its safe, NTLM Decrypt. Also works for the cipher which does not have a key. The OSINT Capture the Flag anyone can play!! Registrations will run all Thursday noon-5 and the contest will run Friday 10:30-1. CTF writeups, RSA - 2. rsactftool 1. CTF events / IceCTF 2018 / Tasks / Hard Shells / Writeup; Hard Shells by blevy / redpwn. We have been monitoring public webcams, then doing facial recognition. The ciphertext is AES encrypted, and the password. CTF cryptography challenges are often provided with an encoded message and some hint as to the encoding. Since this is for a CTF, I've replaced the actual values with working placeholders Commented Jul 4, 2017 at 22:24 Yes, padding is performed before encryption with the block cipher / mode of operation and therefore after decryption Commented Jul 4, 2017 at 16:57 To emulate the conditions of the CTF, I needed to create a ZIP archive containing a text file with the would-be flag. Password protected ZIP file is not a good way to provide confidentiality of documents. Luckily, the encryption system was built with the government money by the lowest bidder, so maybe it contains some flaws. Asymmetric cryptosystems are alos commonly referred to as Public Key Cryptography where a public key is used to encrypt data and only a secret, private key can be used to decrypt the data.