*
     * By default this certificate cannot not sign other certificates. Set this to 0 so this
     * certificate can sign other certificates (but those certificates cannot themselves sign
     * certificates). Set this to 1 so this certificate can sign intermediate certificates that can
     * themselves sign certificates. Add one for each additional layer of intermediates to permit.
     */

        return b;
    }


    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.SMBSigningDigest#sign(byte[], int, int, jcifs.internal.CommonServerMessageBlock,
     *      jcifs.internal.CommonServerMessageBlock)
     */
    @Override
    public void sign ( byte[] data, int offset, int length, CommonServerMessageBlock request, CommonServerMessageBlock response ) {
        if ( log.isTraceEnabled() ) {

	if canonicalQuery != "" {
		return encodedResource + "?" + canonicalQuery
	}
	return encodedResource
}

// Return string to sign under two different conditions.
// - if expires string is set then string to sign includes date instead of the Date header.
// - if expires string is empty then string to sign includes date header instead.

If you didn't sign off your commits before creating the pull request, you can fix that after the fact.

To sign off a single commit:

`git commit --amend --signoff`

To sign off one or multiple commits:

`git rebase --signoff origin/master`

Then force push your branch:

			expectedSignStr:  "",
			expectedErrCode:  ErrMissingFields,
		},
		// Test case - 3.
		// SignElement with missing "SignatureTag",ErrMissingSignTag expected.
		{
			inputSignElement: "Sign=",
			expectedSignStr:  "",
			expectedErrCode:  ErrMissingSignTag,
		},
		// Test case - 4.
		// Test case with valid inputs.
		{
			inputSignElement: "Signature=abcd",
			expectedSignStr:  "abcd",

After a week, the token will be expired and the user will not be authorized and will have to sign in again to get a new token. And if the user (or a third party) tried to modify the token to change the expiration, you would be able to discover it, because the signatures would not match.

	// Verify finally if signature is same.

	// Get canonical request.
	presignedCanonicalReq := getCanonicalRequest(extractedSignedHeaders, hashedPayload, encodedQuery, req.URL.Path, req.Method)

	// Get string to sign from canonical request.
	presignedStringToSign := getStringToSign(presignedCanonicalReq, t, pSignValues.Credential.getScope())

	// Get hmac presigned signing key.

// getChunkSignature - get chunk signature.
// Does not update anything in cr.
func (cr *s3ChunkedReader) getChunkSignature() string {
	hashedChunk := hex.EncodeToString(cr.chunkSHA256Writer.Sum(nil))

	// Calculate string to sign.
	alg := signV4ChunkedAlgorithm + "\n"
	stringToSign := alg +
		cr.seedDate.Format(iso8601Format) + "\n" +
		getScope(cr.seedDate, cr.region) + "\n" +
		cr.seedSignature + "\n" +
		emptySHA256 + "\n" +
		hashedChunk

    long naiveSum = a + b;
    if ((a ^ b) < 0 | (a ^ naiveSum) >= 0) {
      // If a and b have different signs or a has the same sign as the result then there was no
      // overflow, return.
      return naiveSum;
    }
    // we did over/under flow, if the sign is negative we should return MAX otherwise MIN
    return Long.MAX_VALUE + ((naiveSum >>> (Long.SIZE - 1)) ^ 1);
  }

  /**

  * If you work for a company that wants to allow you to contribute your work, then you'll need to sign a [corporate CLA](https://code.google.com/legal/corporate-cla-v1.0.html).