Domain name for API request: kms.tencentcloudapi.com.
This API is used to decrypt the ciphertext and obtain the plaintext data.
A maximum of 300 requests can be initiated per second for this API.
The following request parameter list only provides API request parameters and some common parameters. For the complete common parameter list, see Common Request Parameters.
This document describes the parameters for Signature V1. It's recommended to use the V3 signature, which provides higher security. Note that for Signature V3, the common parameters need to be placed in the HTTP Header. See details.
Parameter Name | Required | Type | Description |
---|---|---|---|
Action | Yes | String | Common parameter. The value used for this API: Decrypt. |
Version | Yes | String | Common parameter. The value used for this API: 2019-01-18. |
Region | Yes | String | Common parameter. For more information, please see the list of regions supported by the product. |
CiphertextBlob | Yes | String | The ciphertext data to be decrypted. |
EncryptionContext | No | String | JSON string of key-value pair. If this parameter is specified for Encrypt , the same parameter needs to be provided when the Decrypt API is called. The maximum length is 1,024 bytes. |
EncryptionPublicKey | No | String | PEM-encoded public key (2048-bit RSA/SM2 key), which can be used to encrypt the Plaintext returned. If this field is left empty, the Plaintext will not be encrypted. |
EncryptionAlgorithm | No | String | Asymmetric encryption algorithm. Valid values: SM2(C1C3C2) , RSAES_PKCS1_V1_5 , RSAES_OAEP_SHA_1 , and RSAES_OAEP_SHA_256 . This field is used in combination with EncryptionPublicKey for encryption. If it is left empty, a SM2 public key will be used by default. |
Parameter Name | Type | Description |
---|---|---|
KeyId | String | Globally unique CMK ID |
Plaintext | String | If EncryptionPublicKey is left empty, a Base64-encoded ciphertext will be returned. To get the plaintext, you need to decode the ciphertext first.If EncryptionPublicKey is specified, this field will return the Base64-encoded ciphertext encrypted with the specified public key. To get the plaintext, you need to decode the ciphertext and upload the corresponding private key. |
RequestId | String | The unique request ID, which is returned for each request. RequestId is required for locating a problem. |
Decrypt ciphertext.
https://kms.tencentcloudapi.com/?Action=Decrypt
&CiphertextBlob=Ade234dasdeEWdGVzdCUyMHBsYWlJJlIHL
&<Common request parameters>
{
"Response": {
"KeyId": "23e80852-1e38-11e9-b129-5cb9019b4b01",
"Plaintext": "dGVzdCUyMHBsYWluJTIwdGV4dA==",
"RequestId": "1b580852-1e38-11e9-b129-5cb9019b4b00"
}
}
TencentCloud API 3.0 integrates SDKs that support various programming languages to make it easier for you to call APIs.
The following only lists the error codes related to the API business logic. For other error codes, see Common Error Codes.
Error Code | Description |
---|---|
FailedOperation.EncryptionError | Encryption failed. |
InternalError | Internal error. |
InvalidParameter | Invalid parameter. |
InvalidParameterValue.InvalidCiphertext | Incorrect ciphertext format |
ResourceUnavailable.CmkDisabled | The CMK has been disabled. |
ResourceUnavailable.CmkNotFound | The CMK does not exist. |
UnauthorizedOperation | Unauthorized operation. |
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