Issue in converting same CSR RSA to EC about ios-csr HOT 11 OPEN

@aleemrazzaq it's possible you may have converted the OID incorrectly. Look at this guide to translate OID's to bytes for ANS.1 (Look at comment section on page): https://msdn.microsoft.com/en-us/library/bb540809(v=vs.85).aspx

Also, you can check my code to see how I converted other OID's: https://github.com/cbaker6/iOS-csr-swift/blob/master/iOS-csr-swift/CertificateSigningRequest.swift

You can also check my repo here: https://github.com/cbaker6/iOS-csr-swift

Good luck!

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I've done R&D and finally get CSR with EC from same SCCSR class, kindly have a look at this.
https://github.com/aleemrazzaq/CSR_EC_256

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@aleemrazzaq I tried your version, but it didn't compile. When I fixed the bugs, it output a CSR, but the CSR wasn't correct as the more changes that need to be done to SCCSR to support EC.

Feel free to look and try my Swift project which now supports EC: https://github.com/cbaker6/CertificateSigningRequestSwift

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@cbaker6 Did you checked my latest updated code. Its tested and working fine. https://github.com/aleemrazzaq/CSR_EC_256

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@aleemrazzaq yes, that is the code I tried. It outputs a CSR, but it's not built correctly For example, you place the public key in the CSR twice, which isn't correct. In addition, the public key section for ECC CSRs is slightly different than RSA which your code doesn't address. I recommend you verify the CSR's generated by your code here: https://redkestrel.co.uk/products/decoder/. If you compare your CSR to an openssl ssl generated CSR, you will see that it's not correct.

You can look at my Swift code (https://github.com/cbaker6/CertificateSigningRequestSwift) to see how I got it working and implement the fixes in objective-c.

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@cbaker6 I checked your code and its written very good, appreciated!. Actually the thing is missing in my code is DER encode Public key, which I already used in my code with other class. I'll get some time to create separate Framework for this plus also attached sample how to use this, soon I'll update so you'll have look into that. Thanks.

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@cbaker6 do you have code for generating the CSR with EC in Objective C?
@aleemrazzaq i have followed you through your question on stackoverflow till here, really appreciate your efforts that you have reached so far. Could you please help me creating CSR with EC keys in Objective C. Really appreciate you effort guys, thanks.

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@asadsam sorry, I haven't coded in obj-c in years. It shouldn't be too hard to port the additions I made in CertificateSigningRequestSwift for EC into ios-csr. The biggest changes are in:

• Adding OBJECT_ecEncryptionNULL, OBJECT_ecPubicKey, SEQUENCE_OBJECT_sha1WithECEncryption, SEQUENCE_OBJECT_sha256WithECEncryption
• buildPublicKeyInfo (mods here)
• adding getPublicKey

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@asadsam Wait for me, soon I'll upload code managed and proper CSR generation with EC and RSA too.

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@asadsam Kindly check my this repo https://github.com/aleemrazzaq/iOSCSR
This works with both RSA and EC plus there is also description on how to create CSR.
Feel free to any query.

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@cbaker6 Kindly check this repo. https://github.com/aleemrazzaq/iOSCSR

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