tencent cloud

1. API Description

Domain name for API request: kms.tencentcloudapi.com.

This API is used to decrypt data with the specified private key that is encrypted with SM2 asymmetric cryptographic algorithm. The ciphertext must be encrypted with the corresponding public key. The asymmetric key must be in Enabled state for decryption. The length of the ciphertext passed in cannot exceed 256 bytes.

A maximum of 200 requests can be initiated per second for this API.

2. Input Parameters

The following request parameter list only provides API request parameters and some common parameters. For the complete common parameter list, see Common Request Parameters.

3. Output Parameters

4. Example

Example1 Decrypting data with an SM2 asymmetric key

Input Example

https://kms.tencentcloudapi.com/?Action=AsymmetricSm2Decrypt
&KeyId=554ef4b3-3071-11ea-a86a-5254006d0810
&Ciphertext=Fb0UICocErQgNEkYKJagtoKNed7DLeo5UkZzPJMyI94CfWh6yKHGgb/0PBHrCve2Avo4gJI5pJMWP3Aq5ggX0aunLv87UX+sgO1/3HXW+q4ARaiwZ9Q73RQuPg6qJ2Eg33uZ2Xjey3l+5yHiOdZYmCVePtKAsuhxzKw/sALTbGTYYnbJXnGKr3Yu7Hs0hCC1bOz0sNqd1IXdUyMtQtbDOV8NWg2ecdZPIOdbnrCKIQ4rpMUghjSFv3rSHo5VbpuOGPXqEZT4goou42psIXb03li3TXxFZMTAdxVMzpqEuTfRxiMPEqyPEHe6xG92vJX0FZfWU8Y5SxlfXp+mvBbAmw==
&<Common request parameters>

Output Example

{
    "Response": {
        "RequestId": "7c076c83-1402-41d8-8ce6-73a350a9eaf6",
        "KeyId": "554ef4b3-3071-11ea-a86a-5254006d0810",
        "Plaintext": "dGVzdA=="
    }
}

5. Developer Resources

SDK

TencentCloud API 3.0 integrates SDKs that support various programming languages to make it easier for you to call APIs.

• Tencent Cloud SDK 3.0 for Python
• Tencent Cloud SDK 3.0 for Java
• Tencent Cloud SDK 3.0 for PHP
• Tencent Cloud SDK 3.0 for Go
• Tencent Cloud SDK 3.0 for NodeJS
• Tencent Cloud SDK 3.0 for .NET
• Tencent Cloud SDK 3.0 for C++

Command Line Interface

• Tencent Cloud CLI 3.0

6. Error Code

The following only lists the error codes related to the API business logic. For other error codes, see Common Error Codes.