Which encryption method is more suitable for quickly encrypting large amounts of data o Assymmetric key encryption o symmetric key encryption? ✅ Chất
Kinh Nghiệm về Which encryption method is more suitable for quickly encrypting large amounts of data o Assymmetric key encryption o symmetric key encryption? Mới Nhất
Hà Trần Thảo Minh đang tìm kiếm từ khóa Which encryption method is more suitable for quickly encrypting large amounts of data o Assymmetric key encryption o symmetric key encryption? được Cập Nhật vào lúc : 2022-10-06 17:50:24 . Với phương châm chia sẻ Thủ Thuật về trong nội dung bài viết một cách Chi Tiết Mới Nhất. Nếu sau khi đọc tài liệu vẫn ko hiểu thì hoàn toàn có thể lại Comment ở cuối bài để Tác giả lý giải và hướng dẫn lại nha.One thing that’s become abundantly clear in the internet age is that preventing unauthorized people from gaining access to the data stored in web-enabled computer systems is extremely difficult. All it takes is for a worker to click on the wrong link in an email, or respond unwarily to a seemingly legitimate request for information, and an intruder could gain complete access to all your data. In today’s regulatory and public relations environments, that kind of breach can be catastrophic.
Nội dung chính- How encryption worksAES encryptionIBM i Encryption 101RSA encryptionHow AES and RSA work togetherWhich encryption method is more suitable?Which of the following is faster in encryption?Which encryption method is most widely used and why?What is symmetric encryption used for?
But what if you could be assured that even if an attacker got access to your information, they couldn’t use it? That’s the role of data encryption.
How encryption works
The basic idea of encryption is to convert data into a form in which the original meaning is masked, and only those who are properly authorized can decipher it. This is done by scrambling the information using mathematical functions based on a number called a key. An inverse process, using the same or a different key, is used to unscramble (or decrypt) the information. If the same key is used for both encryption and decryption, the process is said to be symmetric. If different keys are used the process is defined as asymmetric.
Two of the most widely used encryption algorithms today are AES and RSA. Both are highly effective and secure, but they are typically used in different ways. Let’s take a look how they compare.
AES encryption
AES (Advanced Encryption Standard) has become the encryption algorithm of choice for governments, financial institutions, and security-conscious enterprises around the world. The U.S. National Security Agency (NSC) uses it to protect the country’s “top secret” information.
The AES algorithm successively applies a series of mathematical transformations to each 128-bit block of data. Because the computational requirements of this approach are low, AES can be used with consumer computing devices such as laptops and smartphones, as well as for quickly encrypting large amounts of data. For example, the IBM z14 mainframe series uses AES to enable pervasive encryption in which all the data in the entire system, whether rest or in transit, is encrypted.
AES is a symmetric algorithm which uses the same 128, 192, or 256 bit key for both encryption and decryption (the security of an AES system increases exponentially with key length). With even a 128-bit key, the task of cracking AES by checking each of the 2128 possible key values (a “brute force” attack) is so computationally intensive that even the fastest supercomputer would require, on average, more than 100 trillion years to do it. In fact, AES has never been cracked, and based on current technological trends, is expected to remain secure for years to come.
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RSA encryption
RSA is named for the MIT scientists (Rivest, Shamir, and Adleman) who first described it in 1977. It is an asymmetric algorithm that uses a publicly known key for encryption, but requires a different key, known only to the intended recipient, for decryption. In this system, appropriately called public key cryptography (PKC), the public key is the product of multiplying two huge prime numbers together. Only that product, 1024, 2048, or 4096 bits in length, is made public. But RSA decryption requires knowledge of the two prime factors of that product. Because there is no known method of calculating the prime factors of such large numbers, only the creator of the public key can also generate the private key required for decryption.
RSA is more computationally intensive than AES, and much slower. It’s normally used to encrypt only small amounts of data.
How AES and RSA work together
A major issue with AES is that, as a symmetric algorithm, it requires that both the encryptor and the decryptor use the same key. This gives rise to a crucial key management issue – how can that all-important secret key be distributed to perhaps hundreds of recipients around the world without running a huge risk of it being carelessly or deliberately compromised somewhere along the way? The answer is to combine the strengths of AES and RSA encryption.
In many modern communication environments, including the internet, the bulk of the data exchanged is encrypted by the speedy AES algorithm. To get the secret key required to decrypt that data, authorized recipients publish a public key while retaining an associated private key that only they know. The sender then uses that public key and RSA to encrypt and transmit to each recipient their own secret AES key, which can be used to decrypt the data.
For more information about encryption, read our eBook: IBM i Encryption 101
Which encryption method is more suitable?
AES is widely considered invulnerable to all attacks except for brute force. Regardless, many internet security experts believe AES will eventually be regarded as the go-to standard for encrypting data in the private sector.Which of the following is faster in encryption?
Symmetric cryptography is faster to run (in terms of both encryption and decryption) because the keys used are much shorter than they are in asymmetric cryptography. Additionally, the fact that only one key gets used (versus two for asymmetric cryptography) also makes the entire process faster.Which encryption method is most widely used and why?
AES encryption One of the most secure encryption types, Advanced Encryption Standard (AES) is used by governments and security organizations as well as everyday businesses for classified communications. AES uses “symmetric” key encryption. Someone on the receiving end of the data will need a key to decode it.What is symmetric encryption used for?
Symmetric encryption is the process of converting plaintext into ciphertext and vice versa using the same key. An encryption key is a random string of bits used to encrypt or decrypt data. It is, therefore, important that key is transferred between the sender and recipient using secure methods. Tải thêm tài liệu liên quan đến nội dung bài viết Which encryption method is more suitable for quickly encrypting large amounts of data o Assymmetric key encryption o symmetric key encryption?