crypto.go nil pointer dereference when empty KeyCertConf.RSAPrivateKey is provided

[rpieczon]

Returning block could be nil here:

ODIM/lib-utilities/common/crypto.go

Line 40 in 4aca703

block, _ := pem.Decode(config.Data.KeyCertConf.RSAPrivateKey)

It leads to "Invalid memory address or nil pointer dereference" error.

pem.Decode(...) function documentation:

Decode will find the next PEM formatted block (certificate, private key etc) in the input. It returns that block and the remainder of the input. If no PEM data is found, p is nil and the whole of the input is returned in rest.