bertlv.net's Introduction

BerTlv.NET

BerTlv.NET is a library that makes parsing TLV data easy. It is especially useful for parsing things like EMV credit card transaction data.

Get It

You can install BerTlv.NET from nuget:

PM> Install-Package BerTlv.NET

Or download and build the source from here and reference the BerTlv.dll.

Use It

Using BerTlv.NET is very simple. Two static methods are exposed to you in the Tlv class (one for hex and one for a byte array). Example:

First add the using statement:

using BerTlv;

then:

ICollection<Tlv> tlvs = Tlv.ParseTlv("6F1A840E315041592E5359532E4444463031A5088801025F2D02656E");

// Use the tlvs collection now.

Changelog

2.0.3

Fixes issue with parsing of null bytes (0x00) before, between, or after a valid tag

2.0.2

Add netstandard2.0 support.

2.0.1

Add back net45 support.

2.0.0

Change project to use netstandard1.1.

1.0.1

Renamed Tlv.DataHex property to Tlv.HexData to be consistent with the naming convention of the rest of the Tlv.Hex* properties.

1.0.0

Initial release.

bertlv.net's People

Contributors

Stargazers

Watchers

bertlv.net's Issues

TLV String not working properly

HI I have a problem with a particular Strigng Hex. I tested the Hex String on a thirdparty webpage and had result, but with the library had the next message error.

The TLV String:
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

The app that I testestd the String:
http://www.emvlab.org/tlvutils/

The Exception:
Message = "Index was outside the bounds of the array."
StackTrace = " at BerTlv.Tlv.ParseTlv(Byte[] rawTlv, ICollection1 result)\r\n at BerTlv.Tlv.ParseTlv(Byte[] tlv)\r\n at BerTlv.Tlv.ParseTlv(String tlv)\r\n at PCSC.DNIe.Logic.DNIe.SetPersonalData(Response response) in D:\\TFS\\TFS_Outlook_jdp\\DNIe\\PCSC.DNIe\\... TargetSite = {Void ParseTlv(Byte[], System.Collections.Generic.ICollection1[BerTlv.Tlv])}
InvocationFlags = INVOCATION_FLAGS_INITIALIZED | INVOCATION_FLAGS_NEED_SECURITY

Thanks.

Greeting.

Error with simple TLV

Hello,
I get an error when I try to parse a very short TLV string, just one tag:
Tlv.ParseTlv("FF01014C");
where FF01 is a tag in 2 bytes
second 01 is len
4C is value

The returned exception is a System.IndexOutOfRangeException

Recommend Projects

kspearrin / bertlv.net Goto Github PK