RSA: encrypt in iOS, decrypt in Java

Question

I have a public key that\'s sent from a Java server. The base64 encoded strings match before I decode and strip out the ASN.1 headers. I store the public key in the keychain

Answer 1

I had same problem. Does work with kSecPaddingNone, but doesn't work with kSecPaddingPKCS1 with any PKCS1 combination in Java code.

But, it's not good idea to use it without padding.

So, on iOS, replace kSecPaddingNone with kSecPaddingOAEP and use RSA/NONE/OAEPWithSHA1AndMGF1Padding in your Java code. This does work for me.