Cryptography is the process of hiding or coding information so that only the person a message was intended for can read it. The art of cryptography has been used to code messages for thousands of years and continues to be used in bank cards, computer passwords, and ecommerce. Modern cryptography techniques include algorithms and ciphers that enable the encryption and decryption of information, such as 128‑bit and 256‑bit encryption keys. Modern ciphers, such as the Advanced Encryption Standard (AES), are considered virtually unbreakable.

A common cryptography definition is the practice of coding information to ensure only the person that a message was written for can read and process the information. This cybersecurity practice, also known as cryptology, combines various disciplines like computer science, engineering, and mathematics to create complex codes that hide the true meaning of a message. Cryptography can be traced all the way back to ancient Egyptian hieroglyphics but remains vital to securing communication and information in transit and preventing it from being read by untrusted parties. It uses algorithms and mathematical concepts to transform messages into difficult‑to‑decipher codes through techniques like cryptographic keys and digital signing to protect data privacy, credit card transactions, email, and web browsing.

Cryptography remains important to protecting data and users, ensuring confidentiality, and preventing cyber criminals from intercepting sensitive corporate information. Individuals and organizations use cryptography on a daily basis to protect their privacy and keep their conversations and data confidential. The technique ensures confidentiality by encrypting sent messages using an algorithm with a key only known to the sender and recipient. A common example of this is the messaging tool WhatsApp, which encrypts conversations between people to ensure they cannot be hacked or intercepted. It also secures browsing, such as with virtual private networks (VPNs), which use encrypted tunnels, asymmetric encryption, and public and private shared keys.

Similar to how cryptography can confirm the authenticity of a message, it can also prove the integrity of the information being sent and received. The technology also ensures information is not altered while in storage or during transit between the sender and the intended recipient. For example, digital signatures can detect forgery or tampering in software distribution and  financial transactions.Cryptography confirms accountability and responsibility from the sender of a message, which means they cannot later deny their intentions when they created or transmitted information. Digital signatures are a good example of this, as they ensure a sender cannot claim a message, contract, or document they created to be fraudulent. Furthermore, in email nonrepudiation, email tracking makes sure the sender cannot deny sending a message and a recipient cannot deny receiving it.

There are many types of cryptographic algorithms available. They vary in complexity and security, depending on the type of communication and the sensitivity of the information being shared.

Internet: (adapted).

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    It has been common in second language teaching to stress the role of interference – that is, the interfering effects of the native language on the target (the second) language. It is of course not surprising that this process has been so singled out, for native language interference is surely the most immediately noticeable source of error among second language learners. The saliency of interference has been so strong that some have viewed second language learning as exclusively involving the overcoming of the effects of the native language. It is clear from learning theory that a person will use whatever previous experience he or she has had with language to facilitate the second language learning process. The native language is an obvious set of prior experiences. For example, a French native speaker might say in English, “I am in New York since January,” a perfectly logical transfer of the comparable French sentence “Je suis a New York depuis Janvier.” Because of the negative transfer of the French verb form to English, the French system has, in this case, interfered with the person’s production of a correct English form.

(Brown, D. 1994. Principles of Language

Learning and Teaching. Adaptado)

For question, consider the following text.

South Korea’s President Yoon Suk Yeol _____1 investigated _____ 2 to declare martial law. Prosecutors accuse him _____3 insurrection.

Former Defense Minister Kim Yong-hyun, who resigned, is barred from _____4 the country.

Yoon’s impeachment is being debated. While his party, the People Power Party (PPP), opposes it, some members voted _____5 his martial law order. Party leader Han Dong-hun called Yoon’s actions unconstitutional but warned that impeachment could create chaos. If impeached, the Prime Minister would lead _____ 6 elections in 60 days.

Amid the controversy, Yoon accepted Defense Minister Kim’s resignation and nominated Choi Byung-hyuk as his replacement. Several _____ 7 ministers plan to resign. Yoon’s martial law lasted only hours after lawmakers in an emergency vote repealed it, even blocking troops from entering parliament.

Source: <https://www.newsinlevels.com/products/southkorea-political-crisis-level-3/>

Cold Kimchi Tomato Bibim Noodles

Ingredients

For the sauce

 3 tablespoons tomato paste

 2 tablespoons gochujang

 1 teaspoon kosher salt

 1 1/2 tablespoons sesame oil

 3 tablespoons apple cider vinegar

 3 tablespoons kimchi juice

 1 tablespoon honey

 1 cup chopped kimchi

For the noodles

150 grams somen noodles

For the toppings

 2 Persian cucumbers, sliced into matchsticks

 1 shallot, minced

 2 cups cherry tomatoes, halved

 2 soft-boiled eggs (7 minutes, jammy yolks)

 4 radishes, thinly sliced

To finish

Extra sesame oil, for drizzling

 2 tablespoons furikake

Handful of cilantro

Directions

•Step 1