API Request Signing Guide
API Request Signing Guide
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Developer Guide
- Overview
- AK/SK Signing and Authentication Algorithm
- AK/SK Signing and Authentication Guide
- Error Codes
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FAQs
- How Do I Call APIs in a Subproject?
- Does APIG Support Persistent Connections?
- Must the Request Body Be Signed?
- Are Request Header Parameters Required for Signing Requests?
- How Do I Use a Temporary AK/SK to Sign Requests?
- Common Errors Related to IAM Authentication Information
- What Should I Do If "The API does not exist or has not been published in the environment." Is Displayed?
- General Reference
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API Request Signing Guide/
Developer Guide/
AK/SK Signing and Authentication Algorithm/
Calculating the Signature
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Calculating the Signature
Use the SK and to-be-signed string as the input of the encryption hash function, and convert the calculated binary signature into a hexadecimal expression.
The pseudocode is as follows:
signature = HexEncode(HMAC(Secret Access Key, string to sign))HMAC indicates hash calculation, and HexEncode indicates hexadecimal conversion. Table 1 describes the parameters in the pseudocode.
If the SK is MFyf***VmHc, the calculated signature is as follows:
f12f84a5ecf9eff3206499c4a55b13d1adad745dc8624a2e31f15c6b381d5b80
Parent topic: AK/SK Signing and Authentication Algorithm
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