Connect to aisa.fi.muni.cz using Putty or ssh,
with xlogin and faculty/secondary password
ssh labak
faculty/secondary password
cd /tmp
mkdir your_uco
cd your_uco
Use WinSCP to copy directories examples, asn1 to your directory on labak.
View ASN.1 structure of a file:
unber csca.der
<C O="0" T="[UNIVERSAL 16]" TL="4" V="1266" A="SEQUENCE">
<C O="4" T="[UNIVERSAL 16]" TL="4" V="806" A="SEQUENCE">
<C O="8" T="[0]" TL="2" V="3">
<P O="10" T="[UNIVERSAL 2]" TL="2" V="1" A="INTEGER" F>2</P>
</C O="13" T="[0]" L="5">
<P O="13" T="[UNIVERSAL 2]" TL="2" V="1" A="INTEGER" F>1</P>
<C O="16" T="[UNIVERSAL 16]" TL="2" V="65" A="SEQUENCE">
<P O="18" T="[UNIVERSAL 6]" TL="2" V="9" A="OBJECT IDENTIFIER"
F>1.2.840.113549.1.1.10</P>
<C O="29" T="[UNIVERSAL 16]" TL="2" V="52" A="SEQUENCE">
<C O="31" T="[0]" TL="2" V="15">
….
See the content of a certificate:
openssl x509 -text -noout -inform DER -in csca.der
Certificate:
Data:
Version: 3 (0x2)
Serial Number: 1 (0x1)
Signature Algorithm: 1.2.840.113549.1.1.10
Issuer: C=CZ, O=Czech Republic, OU=Ministry of Interior, CN=CSCA_CZ
Validity
Not Before: Jul 24 00:00:00 2006 GMT
Not After : Oct 24 23:59:59 2021 GMT
Subject: C=CZ, O=Czech Republic, OU=Ministry of Interior, CN=CSCA_CZ
Subject Public Key Info:
Public Key Algorithm: rsaEncryption
RSA Public Key: (3072 bit)
Modulus (3072 bit):
Convert certificate from DER to PEM:
openssl x509 -out csca.pem -inform DER -in csca.der
Prepare the C and H files for the ASN.1 structures:
asn1c sod.asn1
Compiled AlgorithmIdentifier.c
Compiled AlgorithmIdentifier.h
Compiled LDSSecurityObjectVersion.c
Compiled LDSSecurityObjectVersion.h
Compiled DigestAlgorithmIdentifier.c
Compiled DigestAlgorithmIdentifier.h
Compiled LDSSecurityObject.c
Compiled LDSSecurityObject.h
Compiled DataGroupHash.c
Compiled DataGroupHash.h
Compiled DataGroupNumber.c
Compiled DataGroupNumber.h
Symlinked /usr/local/share/asn1c/ANY.h -> ANY.h
Symlinked /usr/local/share/asn1c/ANY.c -> ANY.c
Symlinked /usr/local/share/asn1c/INTEGER.h -> INTEGER.h
Symlinked /usr/local/share/asn1c/NativeEnumerated.h -> NativeEnumerated.h
Symlinked /usr/local/share/asn1c/INTEGER.c -> INTEGER.c
Compile a sample DER-XML converter:
gcc *.c -o LDSview -I. -DPDU=LDSSecurityObject
unzip Sample_Data.zip
./LDSview Sample_Data/lds.bin
rm converter-sample.c
Compile a sample application:
gcc *.c -o LDStest -I.