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TakeScoop / SwiftyRSA

RSA public/private key encryption in Swift
MIT License
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Generating Public Key from custom Data made from modulus and exponent #105

Open diascov opened 6 years ago

diascov commented 6 years ago

Hi there!

First of all I would like to say I'm new in programming so maybe I could ask some weird q =D

I would like to generate Public Key with data made with public key modulus and exponent.

screen shot 2018-01-24 at 11 35 06

let modData = modulus.data(using: .utf8)! let expData = exponent.data(using: .utf8)! let dataArray = [modData, expData] let publicKeyData = NSKeyedArchiver.archivedData(withRootObject: dataArray)

publicKeyData - is data for encryption as I read from java and C# examples.

my q is why I'm receiving this error from : try PublicKey(data: publicKeyData) SwiftyRSA.SwiftyRSAError.asn1ParsingFailed same with base64encoded Data

I could create Public Key only from Der or Pem files created from openssl commands to send public key to another users. But how can I manage received public key from server and create SecKey to encrypt password string?

ldiqual commented 6 years ago

@petrishenkoS @Negative3131 Thanks for opening an issue! Sorry about the delay too.

I'm not sure whether sending raw modulus & exponents is common practice but I haven't seen this used in the wild so far, and the apple SDK doesn't seem to offer such a functionality. I'm open to contributions that would add this ability, just tag me on the PR.

In the meantime, I would recommend sending keys in a PEM format (which is just DER but base64 encoded). This is perfect for http transfers since you can send a string representation as opposed to binary data.

manfengjun commented 6 years ago

At present, it is necessary to use index and modulus to generate public key. Swift has not found a suitable solution at present.

yogendrakarekar commented 4 years ago

so how to solve this issue of asn1parsingfailed, please help