Add RSA component (2048, 3072 and 4096 bit)

[kkashi01]

From pro-koders:

Add RSA component (2048, 3072 and 4096 bit)

[barreeeiroo]

Better use the Cryptography component, as it's already designed for crypto

[Kanishka-Developer]

That's what I meant, actually, when I requested for RSA components. 😅 They'd actually be new methods and properties in the existing Cryptography component.

Methods:

• Encode and Decode for RSA 2048, 3072, and 4096 bit (anything lower is insecure, and higher is too CPU-heavy), that would work with either of the asymmetric keys.
• Generate asymmetric keys for RSA 2048, 3072, and 4096 bit. (returns List with the two keys)

Properties: RSA(bit-length)-Key [ Getter + Setter ]

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Note: There is no point in having Private and Public key properties, since there is no real distinction between the keys generated and either of them can be made public. At the time of decryption, it is expected to programmatically set the key to the device owner's private Key, and while encrypting, to the sender's public key.