They offer a significant increase in performance compared to the current pure-software implementations. Isolating the AES Transformations (C Code) Figure 33.
Beyond improving performance, the AES instructions provide important security benefits. Isolating the AES Transformations Code Results Figure 34. The Performance of AES-128 Encryption in ECB Mode, as a Function of the Buffer Size (Processor based on Intel microarchitecture codename Westmere)91 Figure 56.
; literally: "micro-message") is a Chinese social media (instant messaging, commerce and payment services) mobile application software developed by Tencent.It was first released in 2011 and by 2017 it was one of the largest standalone messaging apps by monthly active users, For comparison, Facebook Messenger and Whats App (two other competitive international messaging services better-known in the West) had about 1,000 million Monthly Active Users in 2016 but did not offer most of the other services available on We Chat.If you fail to perform your response within 5 seconds, we will close the connection./** * Constructor * @param token string | Token set by the developer on the We Chat Official Account Admin Platform * @param encoding Aes Key string | Encoding AESKey set by the developer on the We Chat Official Account Admin Platform * @param app Id string | appid of an Official Account */ public function WXBiz Msg Crypt(token, encoding Aes Key, app Id) * * @param msg Signature string | signature string, corresponding to msg_signature of a URL * @param timestamp string | time stamp, corresponding to timestamp of a URL * @param nonce string | random string, corresponding to nonce of a URL * @param post Data string | encrypted text, corresponding to data of a POST request * @param msg string | decrypted text.Four instructions support the AES encryption and decryption, and other two instructions support the AES key expansion. AES-128 Encryption Outlined Code Sequence Figure 16. AES-128 Key Expansion: Outlined Code Example Figure 20. Checking the CPU Support for the AES Instructions Figure 24. AES-128, AES-192 and AES-256 in CTR Mode (C code) Figure 30.
The AES instructions have the flexibility to support all usages of AES, including all standard key lengths, standard modes of operation, and even some nonstandard or future variants. AES-192 Decryption: Outlined Code Sequence Figure 17. Using the AES Instructions to Compute a 256-bit Block RINJDAEL Round. Isolating the AES Transformations with Combinations of AES Instructions 42 Figure 32.It can exchange contacts with people nearby via Bluetooth, as well as providing various features for contacting people at random if desired (if people are open to it).It can also integrate with other social networking services such as those run by Facebook and Tencent QQ.You can view all the dating profiles in the comfort of your home and set up your own profile.You can send a message to anyone who takes your fancy for free, plus use many other functions of the dating site.Since AES is currently the dominant block cipher, and it is used in various protocols, the new instructions are valuable for a wide range of applications. AES-128, AES-192, AES-256 Encryption/Decryption in ECB Mode (C code)36 Figure 28.