The apex crypto class is great but it appears to only be able to sign content. Is there any way to verify a signature in apex? I would expect a Crypto.verify() method but it doesn't appear to exist. I have some device which will be shipping me back a configuration file containing a signature and public key and I'm at a loss on how to successfully verify this. Was planning on using the SHA1 algorithm.

Has anyone dealt with this before?

  • Which Algorithm you want to use for Varify the Signature? It may be more helpful to provide you the Solution..
    – Tepsi
    Nov 20, 2013 at 7:55
  • @Aisha Was planning on using SHA1
    – Jason Sims
    Nov 20, 2013 at 16:34
  • I added some code in my answer may be it help you or ask me if you still have problem with more information of your problem
    – Tepsi
    Nov 21, 2013 at 5:24
  • Are you able to varify now?
    – Tepsi
    Nov 22, 2013 at 10:16
  • 1
    I'm facing the same problem - did you ever find a solution?
    – Keith C
    Oct 1, 2014 at 18:08

2 Answers 2


You must follow the Following link it will be helpful for you to understand the Signature varification in Salesforce Apex. For SHA1 you can use the below code snippet:

private String getMac(String RequestString, String secretkey) {
String algorithmName = ‘hmacSHA1′; // the other options are: hmacMD5, hmacSHA256, and hmacSHA512
Blob input = Blob.valueOf(RequestString);
Blob signing =Crypto.generateMac(algorithmName, input, secretkey);
String str=EncodingUtil.urlEncode(EncodingUtil.base64Encode(signing), ‘UTF-8′);

use this str if you want signature in url encode if you want it in base64encode form only, then use the below code in place of str:

String str=EncodingUtil.base64Encode(signing);

For HMACSHA256 you can use the below code snippet:

string timestamp1 = datetime.now().formatGmt('EEE, d MMM yyyy HH:mm:ss Z');
String action = 'Action';
String algorithmName = 'HMACSHA256';
Blob mac = Crypto.generateMac(algorithmName, Blob.valueOf(timestamp1),
String macUrl =EncodingUtil.base64Encode(mac);    

Use the str/macUrl where you want to use Signature may be it in the header if you use the POST method. For Sha-1 signature in APEX You can follow the below three links: http://www.tgerm.com/2012/07/sha-1-apex-rackspace-salesforce.html AND http://blog.jeffdouglas.com/2010/07/06/using-rsa-sha1-with-salesforce-crypto-class/ and http://wiki.developerforce.com/page/Apex_Crypto_Class

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    – sfdcfox
    Nov 20, 2013 at 13:18
  • The context is how to verify when you only have access to the "signature and public key" i.e. not the private key. I don't see that covered in your answer or am I missing something?
    – Keith C
    Oct 1, 2014 at 18:13
  • 1
    Is there news about the solution ? I also need to check a signature using the signature and the public key
    – Raphym
    Apr 19, 2017 at 12:50

I got this response on the subject from Salesforce support that confirms there is presently no direct solution in Apex:

crypto.verify method is not available is salesforce / apex

and that it is necessary to use:

third party app / external code

So it is necessary to create, deploy and call e.g. a Java Heroku app to get this done. A lot more work than calling an Apex API.


Looks like methods have been added - see comment below.


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