{
			req: &http.Request{
				URL: &url.URL{
					Host:   "127.0.0.1:9000",
					Scheme: httpScheme,
					Path:   SlashSeparator,
				},
				Header: http.Header{
					"Authorization":        []string{"AWS4-HMAC-SHA256 <cred_string>"},
					"X-Amz-Content-Sha256": []string{streamingContentSHA256},
					"Content-Encoding":     []string{streamingContentEncoding},
				},
				Method: http.MethodPut,
				Body:   nopCloser,
			},

	if IsErrIgnored(err, kes.ErrNotAllowed, kms.ErrNotSupported, errors.ErrUnsupported, kms.ErrPermission) {
		// If we don't have permission to compute the HMAC, don't change the cred.
		return globalActiveCred
	}
	if err != nil {
		logger.Fatal(err, "Unable to generate root access key using KMS")
	}

```java
public class SecureChannelBinding {
    private final byte[] sessionKey;
    
    public byte[] generateChannelBindingHash(ChannelInfo channel) throws GeneralSecurityException {
        // Use HMAC-SHA256 for channel binding
        Mac mac = Mac.getInstance("HmacSHA256");
        SecretKeySpec keySpec = new SecretKeySpec(sessionKey, "HmacSHA256");
        mac.init(keySpec);
        

		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrSignatureVersionNotSupported: {
		Code:           "InvalidRequest",
		Description:    "The authorization mechanism you have provided is not supported. Please use AWS4-HMAC-SHA256.",
		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrBucketNotEmpty: {
		Code:           "BucketNotEmpty",
		Description:    "The bucket you tried to delete is not empty",
		HTTPStatusCode: http.StatusConflict,

size of 2^19 bits (2^16 bytes, 64 KiB). type hmacDRBG struct { newHMAC func(key []byte) *hmac.HMAC hK *hmac.HMAC V []byte reseedCounter uint64 } const ( reseedInterval = 1 << 48 maxRequestSize = (1 << 19) / 8 ) // plainPersonalization is used by HMAC_DRBG as-is. type plainPersonalization []byte func (plainPersonalization) isPersonalizationStr() {} // Each entry in blockAlignedPersonal is written to the HMAC at a // block boundary, as specified in draft-irtf-cfrg-det-sigs-with-noise-04, // Section...

size of 2^19 bits (2^16 bytes, 64 KiB). type hmacDRBG struct { newHMAC func(key []byte) *hmac.HMAC hK *hmac.HMAC V []byte reseedCounter uint64 } const ( reseedInterval = 1 << 48 maxRequestSize = (1 << 19) / 8 ) // plainPersonalization is used by HMAC_DRBG as-is. type plainPersonalization []byte func (plainPersonalization) isPersonalizationStr() {} // Each entry in blockAlignedPersonal is written to the HMAC at a // block boundary, as specified in draft-irtf-cfrg-det-sigs-with-noise-04, // Section...

	// create xlStorage test setup

	now := UTCNow()

	req = signer.StreamingUnsignedV4(req, "", 8, now)

	maliciousHeaders := http.Header{
		"Authorization":                []string{fmt.Sprintf("AWS4-HMAC-SHA256 Credential=%s/%s/us-east-1/s3/aws4_request, SignedHeaders=invalidheader, Signature=deadbeefdeadbeefdeadbeeddeadbeeddeadbeefdeadbeefdeadbeefdeadbeef", s.accessKey, now.Format(yyyymmdd))},

pkg crypto/elliptic, type CurveParams struct, Gy *big.Int
pkg crypto/elliptic, type CurveParams struct, N *big.Int
pkg crypto/elliptic, type CurveParams struct, P *big.Int
pkg crypto/hmac, func New(func() hash.Hash, []uint8) hash.Hash
pkg crypto/md5, const BlockSize ideal-int
pkg crypto/md5, const Size ideal-int
pkg crypto/md5, func New() hash.Hash

pkg crypto/des, const BlockSize = 8
pkg crypto/dsa, const L1024N160 = 0
pkg crypto/dsa, const L2048N224 = 1
pkg crypto/dsa, const L2048N256 = 2
pkg crypto/dsa, const L3072N256 = 3
pkg crypto/hmac, func Equal([]uint8, []uint8) bool
pkg crypto/md5, const BlockSize = 64
pkg crypto/md5, const Size = 16
pkg crypto/sha1, const BlockSize = 64
pkg crypto/sha1, const Size = 20
pkg crypto/sha256, const BlockSize = 64