@andreasdotorg Link? #asn1

@donnywals Started a new contract for Nissan USA, cool tech, but firehose pointed at me, wrapping my head around ASN.1 and Proto Buffers and how to implement in iOS. Any pointers appreciated. #iOSDev #ASN1 #ProtoBufs

In anybody knowing ASN.1 around? I'm seeking a way to constrain a Sequence having three optional elements that alt least one of it must be present.

I'd also appreciate pointer where to ask. many thanks in advance.

#asn #asn1 #x509 #pleaseretoot