return doesPolicySignatureV4Match(formValues)
}

// compareSignatureV4 returns true if and only if both signatures
// are equal. The signatures are expected to be HEX encoded strings
// according to the AWS S3 signature V4 spec.
func compareSignatureV4(sig1, sig2 string) bool {
	// The CTC using []byte(str) works because the hex encoding
	// is unique for a sequence of bytes. See also compareSignatureV2.

		{"X-Amz-Content-Sha256", unsignedPayload, "X-Amz-Credential", "", true},

		// Test case - 4.
		// Enabling PreSigned Signature v4, but X-Amz-Content-Sha256 not set has to be skipped.
		{"", "", "X-Amz-Credential", "", true},

		// Test case - 5.
		// Enabling PreSigned Signature v4, but X-Amz-Content-Sha256 set and its not UNSIGNED-PAYLOAD, we shouldn't skip.
		{"X-Amz-Content-Sha256", "somevalue", "X-Amz-Credential", "", false},

// AWS Signature V4 chunked reader.
type s3UnsignedChunkedReader struct {
	reader   *bufio.Reader
	trailers http.Header

	buffer []byte
	offset int
	err    error
	debug  bool
}

func (cr *s3UnsignedChunkedReader) Close() (err error) {
	return cr.err
}

// Read - implements `io.Reader`, which transparently decodes
// the incoming AWS Signature V4 streaming signature.

	return signedHeaders, ErrNone
}

// signValues data type represents structured form of AWS Signature V4 header.
type signValues struct {
	Credential    credentialHeader
	SignedHeaders []string
	Signature     string
}

// preSignValues data type represents structured form of AWS Signature V4 query string.
type preSignValues struct {
	signValues
	Date    time.Time
	Expires time.Duration
}

	}
}

// TestParseCredentialHeader - validates the format validator and extractor for the Credential header in an aws v4 request.
// A valid format of credential should be of the following format.
// Credential = accessKey + SlashSeparator+ scope
// where scope = string.Join([]string{  currTime.Format(yyyymmdd),
//
//				globalMinioDefaultRegion,

		chunkSHA256Writer: sha256.New(),
		buffer:            make([]byte, 64*1024),
		debug:             false,
	}, ErrNone
}

// Represents the overall state that is required for decoding a
// AWS Signature V4 chunked reader.
type s3ChunkedReader struct {
	reader        *bufio.Reader
	cred          auth.Credentials
	seedSignature string
	seedDate      time.Time
	region        string
	trailers      http.Header

		case "transfer-encoding":
			// Go http server removes "host" from Request.Header
			extractedSignedHeaders[http.CanonicalHeaderKey(header)] = r.TransferEncoding
		case "content-length":
			// Signature-V4 spec excludes Content-Length from signed headers list for signature calculation.
			// But some clients deviate from this rule. Hence we consider Content-Length for signature
			// calculation to be compatible with such clients.

	VWADDVX		X10, V2, V4, V3			// ERROR "invalid vector mask register"
	VWSUBVV		V1, V2, V4, V3			// ERROR "invalid vector mask register"
	VWSUBVX		X10, V2, V4, V3			// ERROR "invalid vector mask register"
	VWADDUWV	V1, V2, V4, V3			// ERROR "invalid vector mask register"
	VWADDUWX	X10, V2, V4, V3			// ERROR "invalid vector mask register"
	VWSUBUWV	V1, V2, V4, V3			// ERROR "invalid vector mask register"

	VLUXSEG3EI16V	(X10), V4, V8			// 07544546
	VLUXSEG3EI32V 	(X10), V4, V8			// 07644546
	VLUXSEG3EI64V	(X10), V4, V8			// 07744546
	VLUXSEG3EI8V	(X10), V4, V0, V8		// 07044544
	VLUXSEG3EI16V	(X10), V4, V0, V8		// 07544544
	VLUXSEG3EI32V	(X10), V4, V0, V8		// 07644544
	VLUXSEG3EI64V	(X10), V4, V0, V8		// 07744544

	VLUXSEG4EI8V	(X10), V4, V8			// 07044566
	VLUXSEG4EI16V	(X10), V4, V8			// 07544566
	VLUXSEG4EI32V	(X10), V4, V8			// 07644566

        assertEquals(
                1, res.getIncidentEdges(v4).size(), "wrong # of edges v3-v4 in the resulting graph after resolver");
        assertEquals(
                "1.2",
                res.getIncidentEdges(v4).get(0).getVersion(),
                "wrong edge v3-v4 in the resulting graph after resolver");
    }