{http.StatusForbidden, credentials.SecretKey, map[string]string{"AWSAccessKeyId": "invalidaccesskey"}},
		{http.StatusForbidden, "invalidsecretkey", map[string]string{"AWSAccessKeyId": credentials.AccessKey}},
		{http.StatusNoContent, credentials.SecretKey, map[string]string{"AWSAccessKeyId": credentials.AccessKey}},
		{http.StatusForbidden, credentials.SecretKey, map[string]string{"Awsaccesskeyid": "invalidaccesskey"}},

	// Authorization = "AWS" + " " + AWSAccessKeyId + ":" + Signature
	authFields := strings.Split(r.Header.Get(xhttp.Authorization), " ")
	if len(authFields) != 2 {
		return auth.Credentials{}, false, ErrMissingFields
	}

	// Then will be splitting on ":", this will separate `AWSAccessKeyId` and `Signature` string.
	keySignFields := strings.Split(strings.TrimSpace(authFields[1]), ":")

			}
		}
		delete(mustFindInPolicy, formCanonicalName)
	}

	// For SignV2 - Signature/AWSAccessKeyId fields do not need to be in the policy
	if _, ok := formValues[xhttp.AmzSignatureV2]; ok {
		delete(mustFindInPolicy, xhttp.AmzSignatureV2)
		for k := range mustFindInPolicy {
			// case-insensitivity for AWSAccessKeyId
			if strings.EqualFold(k, xhttp.AmzAccessKeyID) {
				delete(mustFindInPolicy, k)
				break
			}

	testCases := []struct {
		inputQueryKey   string
		inputQueryValue string
		expectedResult  bool
	}{
		// Test case - 1.
		// Test case with query key "AWSAccessKeyId" set.
		{"", "", false},
		// Test case - 2.
		{"AWSAccessKeyId", "", true},
		// Test case - 3.
		{"X-Amz-Content-Sha256", "", false},
	}

	for i, testCase := range testCases {
		// creating an input HTTP request.

	AmzEncryptionAES = "AES256"
	AmzEncryptionKMS = "aws:kms"

	// Signature v2 related constants
	AmzSignatureV2 = "Signature"
	AmzAccessKeyID = "AWSAccessKeyId"

	// Response request id.
	AmzRequestID     = "x-amz-request-id"
	AmzRequestHostID = "x-amz-id-2"

	// Deployment id.
	MinioDeploymentID = "x-minio-deployment-id"

	// Peer call

		},
		{
			name: "Signature does not have to appear in policy",
			fv:   defaultFormVals.Clone().Set(xhttp.AmzSignatureV2, "signature-value"),
		},
		{
			name: "AWSAccessKeyID does not have to appear in policy",
			fv:   defaultFormVals.Clone().Set(xhttp.AmzAccessKeyID, "access").Set(xhttp.AmzSignatureV2, "signature-value"),
		},
		{