README.md
1# Cipher
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3### Introduction
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5This sample shows how to use cipher algorithms, including Rivest-Shamir-Adleman (RSA) and Advanced Encryption Standard (AES). The display effect is as follows:
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9### Concepts
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11RSA: A public-key cryptosystem that works on two different keys: a public encryption key and a private decryption key.
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13AES: A block encryption standard established by the U.S. National Institute of Standards and technology (NIST). It is also called Rijndael.
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15### Required Permissions
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17N/A.
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19### Usage
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211. On the home screen, touch the **Encrypt** button. On the **Encrypt** screen, select an encryption algorithm from the **Encryption Algorithm** drop-down list box, enter the content to be encrypted in the text box, and touch the **Encrypt** button.
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23 The encrypted content is displayed in the text box below.
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252. Touch the **Reset** button to clear the content in the text box.
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273. Touch the **Decrypt** button on the home screen. On the **Decrypt** screen, select a decryption algorithm from the **Decryption Algorithm** drop-down list box, enter the content to be decrypted in the text box, and touch the **Decrypt** button.
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29 The decrypted content is displayed in the text box below.
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314. Touch the **Reset** button to clear the content in the text box.
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33### Constraints
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35- This sample can only be run on standard-system devices.
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37- This sample requires DevEco Studio 3.1 Canary1 (Build Version: 3.1.0.100) to compile and run.
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