CODEWITHSUNDEEP
javascriptdsa
Daniel Stephens
Daniel Stephens

Reputation: 3209

dsaSign and doesn't work with private key

I am using the license generator of FastSpring and their documentation is very poor, especially on the JavaScript functions dsaSign(arg1, arg2) with the following explanation:

dsaSign(arg1, arg2):

arg1 is a 512 or 1024 byte DSA key in PEM format. arg2 is the String to sign. Returns a Base64 String.

I visisted https://8gwifi.org/dsafunctions.jsp to create a test DSA 1024 private key, for example:

-----BEGIN DSA PRIVATE KEY-----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-----END DSA PRIVATE KEY-----

Here is my example code:

var key = "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";
var license = dsaSign(key, "Foo");

And I receive with no further explanation:

-- ERROR --
Script is invalid 
Error :Wrapped java.lang.RuntimeException: DSA sign error: null (#3)

Does anyone know what I am doing wrong?

Upvotes: 1

Views: 86

Answers (1)

Moti Salamon
Moti Salamon

Reputation: 162

its happened to me, im not sure but i think i added the key with the start/end lines and for some strange reason it's worked.

var key = "-----BEGIN DSA PRIVATE KEY----- your code -----END DSA PRIVATE KEY-----";

Upvotes: 1

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