things I used to know.  Let me see:  four times five is twelve,
and four times six is thirteen, and four times seven is--oh dear!
I shall never get to twenty at that rate!  However, the
Multiplication Table doesn't signify:  let's try Geography.
London is the capital of Paris, and Paris is the capital of Rome,
and Rome--no, THAT'S all wrong, I'm certain!  I must have been
changed for Mabel!  I'll try and say "How doth the little--"'

		}

		// Retrieve the credential's claims.
		secret, err := getTokenSigningKey()
		if err != nil {
			c.Fatalf("Error getting token signing key: %v", err)
		}
		claims, err := getClaimsFromTokenWithSecret(value.SessionToken, secret)
		if err != nil {
			c.Fatalf("Error getting claims from token: %v", err)
		}

		// Validate claims.

	c.Assert(err, nil)
	response, err = s.client.Do(request)
	c.Assert(err, nil)
	verifyError(c, response, "SignatureDoesNotMatch", "The request signature we calculated does not match the signature you provided. Check your key and signing method.", http.StatusForbidden)
}

// This tests validate if PUT handler can successfully detect SHA256 mismatch.
func (s *TestSuiteCommon) TestSHA256Mismatch(c *check) {
	// generate a random bucket name.

### Other notable changes

* The kube-apiserver --service-account-key-file option can be specified multiple times, or can point to a file containing multiple keys, to enable rotation of signing keys. ([#34029](https://github.com/kubernetes/kubernetes/pull/34029), [@liggitt](https://github.com/liggitt))

		uploadTestObject(t, apiRouter, credentials, bucketName, input.objectName, input.partLengths, input.metaData, false)
	}

	// function type for creating signed requests - used to repeat
	// requests with V2 and V4 signing.
	type testSignedReqFn func(method, urlStr string, contentLength int64,
		body io.ReadSeeker, accessKey, secretKey string, metamap map[string]string) (*http.Request,
		error)