openSUSE:Leap:15.1 openSUSE Leap 15.1 https://download.opensuse.org/distribution/leap/15.1/repo/oss/ asn1c ASN.1 Compiler Compiles ASN.1 data structures into C source structures that can be simply marshalled to/unmarshalled from: BER, DER, CER, BASIC-XER, CXER, EXTENDED-XER, PER.