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# HUKS Overview
### Introduction
## Introduction
OpenHarmony Universal KeyStore (HUKS) provides KeyStore (KS) capabilities for applications, including key management and key cryptography operations. HUKS also provides APIs for applications to import or generate keys.
### Basic Concepts
## Basic Concepts
- HUKS provides key management functions, including encryption and decryption, signing and signature verification, key agreement and derivation, and Hash-based Message Authentication Code (HMAC) calculation.
- HUKS supports the following algorithms: AES and RSA in encryption and decryption, RSA, ECC, DSA, and ED25519 in signing and signature verification, PBKDF2 in key derivation, and DH, ECDH, and X25519 in key agreement.
- HUKS uses the OpenSSL and Mbed TLS algorithm libraries.
### Working Principles
## Working Principles
HUKS manages keys through the following operations:
......@@ -20,8 +20,9 @@ HUKS manages keys through the following operations:
- **Finish**: processes all data transferred to HUKS and then releases resources.
>**NOTICE**<br/>The **Abort** operation is invoked to terminate the use of the key when an error occurs in the **Init**, **Update**, or **Finish** operation.
> **NOTICE**<br>
> The **Abort** operation must be invoked to terminate the use of the key when an error occurs in the **Init**, **Update**, or **Finish** operation.
### Constraints
## Constraints
N/A
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