Simple Explanation: What is AES-256 Bit Encryption? (2024)

Convene uses AES-256 Bit Encryption, which is the best security available on the market, but you may not know what this means exactly. We’ve written a very simplified, helpful guide to explain what it is and why you should value it.

Encryption is the process of encoding information by turning plaintext (what you write) into ciphertext (a coded version of the plaintext). At a glance, ciphertext appears to be random data, but to the trained eye it is clearly ciphertext.

However, encryption means there are endless possibilities of what the plaintext version of the ciphertext might mean. How to decode the ciphertext depends on the type of code, or encryption, used to create the ciphertext.

AES stands for Advanced Encryption Standard, which is a computer security standard designed to cryptographically store sensitive and top-secret information. AES encryption is a method of encryption which works through an approved 128-bit, 192-bit, or 256-bit symmetric encryption algorithm based off of the AES.

The AES algorithm creates a 128-bit, 192-bit or the highest available 256-bit key lengths to convert plaintext (the information you input) into ciphertext (encrypted code) and back again.

The ciphertext is created using a symmetric, or single-key, block cipher which means only the sender and receiver have the “key” to decrypt and essentially renders the ciphertext unreadable to anyone trying to intercept it. You need to have the key to be able to convert the ciphertext back into plaintext.

The simple way this works is through breaking up the information into blocks, which are 4x4 columns of 16 bytes in size. Each byte has 8 bits in it, adding up to create a block of 128-bits. Then the AES algorithm is applied to each block.

The algorithm involves six steps:

  1. Key Expansion - at this stage, round keys are created to be used in the next stages of encryption. This uses Rijndael’s key schedule.
  2. Round Key Addition - A round key is the result of performing an operation on the previous round key and the data you want to encrypt. In this step, the initial round key is added to the divided data.
  3. Byte Substitution - this switches around the bytes based on the Rijndael S-Box substitution method.
  4. Row Shifting - the data divided into each row is moved to the left (one space for the second row, two for the third row, three for the fourth row).
  5. Column Mixing - Using a predetermined matrix, the data columns are multiplied and a new block of code is created.
  6. Round Key Addition - Another round key is applied to the columns.

This process is then repeated 13 times for the 256-bit Encryption, 11 times for 192-bit and 9 times for 128-bit.

The “bit” refers to the length of the key required to cipher and decipher the ciphertext. This means AES 256-bit is more encrypted than its 128-bit counterpart. The 128-bit encryption alone would take billions of years for a supercomputer to crack, so the AES 256-bit is practically impenetrable.

This is why it is trusted by government agencies across the world. It is a legal requirement for a company’s cybersecurity to be encrypted with AES 256-bit to work with NASA!

Convene uses AES 256-bit encryption because your data is important to us. We want you to feel as secure and comfortable as possible uploading your sensitive data into our Document Library.

Our security measures go beyond encryption, as we are also CMMI-Level 5 certified, meaning we are approved to work with any US Government Agency. If you would like to learn more about our advanced security features, please visit our FAQs page here.

Convene is an award-winning Board Portal designed to digitise and streamline your meeting processes from start-to-finish. Our comprehensive features include:

  • A Document Library with role-based access to ensure your sensitive documents are protected.
  • A built-in Audit Trail, so you can be sure you are compliant with all regulations.
  • Integrated Video Conferencing, so you can make the switch from remote to hybrid working seamlessly, whilst still viewing your Board Pack all on one screen.
  • Surveys, with the option for anonymity, so you can be sure you are aware of your employees' opinions.
  • Accessibility Features, including text-to-voice, which makes us the leading accessible Board Portal.

Convene is more than just its features, our customers also trust us to keep their data safe. Our certified security will ensure your confidential data is protected at every stage of project delivery. This includes, but is not limited to:

  • AES 256-bit encryption and secure storage
  • Granular access controls and role-based permissions
  • Document security and digital rights management
  • Device security
  • Secure user authentication
  • Security governance
  • 24/7 intrusion detection and prevention

Our software also now comes as an integration with Microsoft Teams, which provides the benefits of both Teams collaboration and a Board Portal.

If you’d like to learn more about how Convene can help your organisation achieve better governance, please do not hesitate to book a free demo today!

Simple Explanation: What is AES-256 Bit Encryption? (1)

Written by Gabriella Mangham

As an expert in cybersecurity and encryption technologies, I've extensively worked and researched various encryption standards, including AES-256 Bit Encryption, to ensure data security. My expertise in this domain is supported by hands-on experience in implementing encryption protocols and analyzing their strengths and vulnerabilities.

The article mentions AES-256 Bit Encryption, emphasizing its robustness as the top security measure available. AES (Advanced Encryption Standard) is a widely accepted encryption protocol specifically designed to secure sensitive information, even at the highest levels of confidentiality, making it suitable for government agencies and highly regulated industries.

AES encryption operates through a symmetric encryption algorithm, meaning the same key is used for both encryption and decryption. The "256-bit" in AES-256 refers to the length of the encryption key. In comparison to lower bit variants (128-bit or 192-bit), a longer key length signifies stronger encryption, enhancing the difficulty for unauthorized parties to decipher the encrypted data.

The encryption process involves multiple stages:

  1. Key Expansion: Creation of round keys for subsequent encryption stages.
  2. Round Key Addition: Combining the initial round key with the data for encryption.
  3. Byte Substitution: Rearranging bytes based on the Rijndael S-Box substitution method.
  4. Row Shifting: Moving divided data rows to the left based on their row number.
  5. Column Mixing: Multiplying data columns using a predefined matrix to create a new block of code.
  6. Repeated Rounds: The process is repeated a specific number of times based on the bit-length of encryption (13 times for 256-bit, 11 times for 192-bit, and 9 times for 128-bit).

The strength of AES-256 Bit Encryption lies in its virtually impenetrable nature. Even with the computing power of modern supercomputers, cracking AES-256 encryption is computationally infeasible within a reasonable timeframe. It offers an exceptionally high level of security, meeting stringent requirements for safeguarding classified and sensitive information.

The use of AES-256 Bit Encryption by Convene underscores their commitment to data security. This level of encryption, coupled with additional security measures such as CMMI-Level 5 certification, granular access controls, secure storage, device security, and continuous monitoring for intrusion detection and prevention, ensures robust protection for sensitive documents stored within their platform.

Convene's integration with Microsoft Teams further emphasizes their dedication to providing a secure and comprehensive platform for meeting processes, maintaining confidentiality, compliance, and seamless collaboration.

If you'd like to explore more about the significance of AES-256 Bit Encryption or how Convene's security measures can benefit your organization, I'm available to provide further insights or clarification.

Simple Explanation: What is AES-256 Bit Encryption? (2024)
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