CODEWITHSUNDEEP
node.jsapiopensslrsacryptojs
Flo
Flo

Reputation: 3047

OpenSSL Node.js Error No Start Line

I started developing an app in node.js for the german Sparkasse (banking provider). They provide an API to their service. German Link to their API

in the secondstep I get a RSA-2048-SHA1 publickey from their server. in the fourth step, I should use that public key, to encrypt a session key created in step 3. but when encrypting with:

var key = 'password';
var sha256 = crypto.createHash('sha256');
sha256.update(key);
var iv = new Buffer([0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]);
var cipher = crypto.createCipheriv('aes-256-cbc', sha256.digest(), iv);        
let sessionKey = cipher.final('base64')
let publicKey = response.publicKey.value
crypto.publicEncrypt(publicKey,new Buffer(sessionKey))

I get the following Error message, that I think is from OpenSSL. I don't really know how to fix that issue as I cannot evaluate if the publicKey I get from the API is valid.

Error: error:0906D06C:PEM routines:PEM_read_bio:no start line

Upvotes: 2

Views: 7096

Answers (2)

aris
aris

Reputation: 597

on each new line start you shuould put : /n

if you keep it as string on config file , on windows you should save it like that:

  "JWTPRIVATE": "-----BEGIN RSA PRIVATE KEY-----\nMIIJKAIBAAKCA...

just to show you how it looks before i deleted the spaces:

"-----BEGIN PUBLIC KEY-----/n
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAytBCDJR5/6JAlB7ErBge/n
22YwN/u0K63wrnCMLde+hQQCYs7pBuYtbyxXF2PBFuHS+ytD9PSpY9t3NiGbk/9U/n
..."

for new line as you can see here: Why does "\n" give a new line on Windows?

Upvotes: 0

President James K. Polk
President James K. Polk

Reputation: 41958

The public key you received is in the wrong format. It needs to be a "PEM" formatted key. You'll have to convert it by wrapping it in "BEGIN ..." and "END..." lines, and possibly splitting into 64 character lines.

Here is an example of a properly formatted public key:

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAytBCDJR5/6JAlB7ErBge
22YwN/u0K63wrnCMLde+hQQCYs7pBuYtbyxXF2PBFuHS+ytD9PSpY9t3NiGbk/9U
s9GYCnqaK+vg2hz+T86LjJVkTJe0HWuE6g+HQ9GjyDGiO7ZBQw31HKxHYA2cMMVj
tiO97VKLR9Fp6c6X33uNtdAaUZg57PjyNl6TjPwc52tJz8H5g0aV4tYelsTMaSSE
4nVwPLBoDzZaT84ktW1RuGToC4gEB/bctFrRBVaxp/KSebpds9P2xGMVweWgrvml
cLnHGLKBxcCxh9kbgHS/nrgYXPjj92hxk2se/C7QmYeRSUs4ikEWO06NJ7Cgk+bQ
8wIDAQAB
-----END PUBLIC KEY-----

Upvotes: 3

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