Biometric Signature Interface

Biometric Signature Interface (aka bsi-core) is a java library for manipulating Signature/sign time series data according to ISO/IEC 19794-7:2007

What you can do

You can import from ISO
You can build your own ISO from a list of ManagedIsoPoint captured (Capturing will be in the scope of next projects so... stay tuned)
You can build a generic structure where include your ISO and a list of custom extended data (like AdditionalHashInfo)
You can encrypt/decrypt those structures using CMS PKCS7 standards

Examples

Import/Export from ISO

import eu.inn.biometric.signature.device.CapturingComponent;
import eu.inn.biometric.signature.managed.ManagedIsoPoint;
import eu.inn.biometric.signature.managed.impl.IsoSignatureData;

void fromIso(byte[] isoBytes){  
    IsoSignatureData iso = IsoSignatureData.fromIso(isoBytes);
    CapturingComponent componentInfo = iso.getCapturingComponent();
    List<ManagedIsoPoint> points = getIsoPoints();
}

byte[] toIso(List<ManagedIsoPoint> points, CapturingComponent componentInfo){
    IsoSignatureData iso = IsoSignatureData.fromData(points, componentInfo);
    return iso.getIsoData(); //pure byte[] iso
}

Enrich with your own data

1) Let's define your custom data

package eu.inn.examples;

import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
import eu.inn.biometric.signature.extendeddata.AbstractExtendedData;

@XmlAccessorType(XmlAccessType.FIELD)
@XmlRootElement
public class GpsCoordinates extends AbstractExtendedData {  

    @XmlElement
    public double latitude;

    @XmlElement
    public double longitude;

    public GpsCoordinates() {
    }

    public GpsCoordinates(double latitude, double longitude) {
        this.latitude = latitude;
        this.longitude = longitude;
    }
}

2) Enrich your ISO

import eu.inn.biometric.signature.device.CapturingComponent;
import eu.inn.biometric.signature.managed.ManagedIsoPoint;
import eu.inn.biometric.signature.managed.impl.IsoSignatureData;
import eu.inn.examples.GpsCoordinates;

void enrich(IsoSignatureData iso){      
    GpsCoordinates coord = new GpsCoordinates(41.1212, 11.2323);
    coord.setKey("Coord1");
    iso.getExtendedDatas().add(coord); //add your pre-defined extended-data    
    System.out.println(iso.toOutput());
}

3) Export your data (yes, this is the output of "toOutput" method)

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<isoSignatureData>
    <extendedDatas>
        <gpsCoordinates componentClass="eu.inn.examples.GpsCoordinates" key="Coord1">
            <latitude>41.1212</latitude>
            <longitude>11.2323</longitude>
        </gpsCoordinates>
    </extendedDatas>
    <isoData>MIAGCSqGSIb3DQEHA6CAMIACAQAxg3MQswCQ........5w7LEtmv6OqFXiGbN9nf9vmAAAAAAAAAAAAAA=</isoData>
</isoSignatureData>

Encrypt/Decrypt

import java.security.PrivateKey;
import java.security.cert.X509Certificate;
import eu.inn.biometric.signature.managed.impl.CMSEncryptedBdi;
import eu.inn.biometric.signature.managed.impl.IsoSignatureData;

void encrypt(IsoSignatureData iso, List<X509Certificate> publicKeys, int maxKeyLength){     
    CMSEncryptedBdi<IsoSignatureData> encrypted = CMSEncryptedBdi.encrypt(origIso, certs, 128);
    String base64Encrypted = encrypted.toOutput();
}

void decrypt(byte[] encryptedBytes, PrivateKey privateKey) {
    CMSEncryptedBdi<IsoSignatureData> enc = CMSEncryptedBdi.fromCMSbytes(encryptedBytes);
    enc.setPrivateKey(privateKey);          
    IsoSignatureData dec = enc.decrypt(IsoSignatureData.class);
}

Requirements

Java6
Simple Xml Serialization
BSI Crypto Provider based on BC (optional)

Include in your maven project

<project>
    [.......]
    <dependencies>
        [.......]
        <dependency>
            <groupId>eu.inn.biometric.sign</groupId>
            <artifactId>bsi-core</artifactId>
            <version>0.0.2</version>
        </dependency>
        <dependency>   <!-- you can either use your own cryptographic implementation -->
            <groupId>eu.inn.biometric.sign</groupId>
            <artifactId>bc-crypto-bsi</artifactId>  
            <version>0.0.1</version>
            <scope>runtime</scope>
        </dependency>
    </dependencies>
    <distributionManagement>
        <repository>
            <id>InnoveryRelease</id>
            <name>Innovery Public Releases</name>
            <url>https://developers.innovery.net/artifactory/public-release</url>
        </repository>
    </distributionManagement>
</project>

biosignin / bsi-core

readme