- What's New
- Function Overview
- Service Overview
- Getting Started
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User Guide
- Key Management Service
- Cloud Secret Management Service
- Key Pair Service
- Dedicated HSM
- Auditing Logs
- Permission Control
- Best Practices
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API Reference
- Before You Start
- Calling APIs
- API Overview
- APIs
- Application Examples
- Permissions Policies and Supported Actions
- Appendix
- Change History
- SDK Reference
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FAQs
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KMS Related
- What Is Key Management Service?
- What Is a Customer Master Key?
- What Is a Default Key?
- What Are the Differences Between a Custom Key and a Default Key?
- What Is a Data Encryption Key?
- Why Cannot I Delete a CMK Immediately?
- Which Cloud Services Can Use KMS for Encryption?
- How Do Huawei Cloud Services Use KMS to Encrypt Data?
- What Are the Benefits of Envelope Encryption?
- Is There a Limit on the Number of Custom Keys That I Can Create on KMS?
- Can I Export a CMK from KMS?
- Can I Decrypt My Data if I Permanently Delete My Custom Key?
- How Do I Use the Online Tool to Encrypt or Decrypt Small Volumes of Data?
- Can I Update CMKs Created by KMS-Generated Key Materials?
- How Are Default Keys Generated?
- What Should I Do If I Do Not Have the Permissions to Perform Operations on KMS?
- Why Can't I Wrap Asymmetric Keys by Using -id-aes256-wrap-pad in OpenSSL?
- Key Algorithms Supported by KMS
- What Should I Do If KMS Failed to Be Requested and Error Code 401 Is Displayed?
- CSMS Related
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KPS Related
- How Do I Create a Key Pair?
- What Are a Private Key Pair and an Account Key Pair?
- How Do I Handle an Import Failure of a Key Pair Created Using PuTTYgen?
- What Should I Do When I Fail to Import a Key Pair Using Internet Explorer 9?
- How Do I Log In to a Linux ECS with a Private Key?
- How Do I Use a Private Key to Obtain the Password to Log In to a Windows ECS?
- How Do I Handle the Failure in Binding a Key Pair?
- How Do I Handle the Failure in Replacing a Key Pair?
- How Do I Handle the Failure in Resetting a Key Pair?
- How Do I Handle the Failure in Unbinding a Key Pair?
- Do I Need to Restart Servers After Replacing Its Key Pair?
- How Do I Enable the Password Login Mode for an ECS?
- How Do I Handle the Failure in Logging In to ECS After Unbinding the Key Pair?
- What Should I Do If My Private Key Is Lost?
- How Do I Convert the Format of a Private Key File?
- Can I Change the Key Pair of a Server?
- Can a Key Pair Be Shared by Multiple Users?
- How Do I Obtain the Public or Private Key File of a Key Pair?
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Dedicated HSM Related
- What Is Dedicated HSM?
- How Does Dedicated HSM Ensure the Security for Key Generation?
- Do Equipment Room Personnel Has the Super Administrator Role to Steal Information by Using a Privileged UKey?
- What HSMs Are Used for Dedicated HSM?
- What APIs Does Dedicated HSM Support?
- How Do I Enable Public Access to a Dedicated HSM Instance?
- Pricing
- General
- Change History
-
KMS Related
- Videos
Show all
Overview
KMS is a secure, reliable, and easy-to-use cloud service that helps users create, manage, and protect keys in a centralized manner.
After your cloud services are integrated with KMS, to encrypt data on cloud, you simply need to select a CMK managed by KMS for encryption.
You can select a Default Master Key (DMK) automatically created by a cloud service through KMS, or a key you created or imported to KMS. For details, see .
Encryption Process
HUAWEI CLOUD services use the envelope encryption technology and call KMS APIs to encrypt service resources. Your CMKs are under your own management. With your grant, HUAWEI CLOUD services use a specific CMK of yours to encrypt data.
- Create a CMK on KMS.
- A HUAWEI CLOUD service calls the create-datakey API of the KMS to create a DEK. A plaintext DEK and a ciphertext DEK are generated.
NOTE:
Ciphertext DEKs are generated when you use a CMK to encrypt the plaintext DEKs.
- The HUAWEI CLOUD service uses the plaintext DEK to encrypt a plaintext file, generating a ciphertext file.
- The HUAWEI CLOUD service saves the ciphertext DEK and the ciphertext file together in a permanent storage device or a storage service.
When users download the data from the HUAWEI CLOUD service, the service uses the CMK specified by KMS to decrypt the ciphertext DEK, uses the decrypted DEK to decrypt data, and then provides the decrypted data for users to download.
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