fix: RSA removed, according to #164

[peppelinux]

signing RSA algs removed, since we MUST support EC, according to #164

[fventola-ipzs]

I suggest to add, as a note, the support of this alghoritms from Android 6+ and iOS 13.0+, like mentioned in the following official pages, that we can add also as bibliography, in particular for Android info here and for iOS here.

[asharif1990]

I suggest to add, as a note, the support of this alghoritms from Android 6+ and iOS 13.0+, like mentioned in the following official pages, that we can add also as bibliography, in particular for Android info here and for iOS here.

So from the refrence that you provided it seems that on the mobile devices, there is no support for the brainpool curve.

[fventola-ipzs]

I suggest to add, as a note, the support of this alghoritms from Android 6+ and iOS 13.0+, like mentioned in the following official pages, that we can add also as bibliography, in particular for Android info here and for iOS here.

So from the refrence that you provided it seems that on the mobile devices, there is no support for the brainpool curve.

You're right, we need external library to manage brainpool curve on mobile. In Android are implemented with BouncyCastle and in iOS with Swift extension wrapper.