ee.sk.smartid.SignableData Maven / Gradle / Ivy
Show all versions of smart-id-java-client Show documentation
package ee.sk.smartid;
import org.apache.commons.codec.binary.Base64;
import java.io.Serializable;
/**
* This class can be used to contain the data
* to be signed when it is not yet in hashed format
*
* {@link #setHashType(HashType)} can be used
* to set the wanted hash tpye. SHA-512 is default.
*
* {@link #calculateHash()} and
* {@link #calculateHashInBase64()} methods
* are used to calculate the hash for signing request.
*
* {@link ee.sk.smartid.SignableHash} can be used
* instead when the data to be signed is already
* in hashed format.
*/
public class SignableData implements Serializable {
private byte[] dataToSign;
private HashType hashType = HashType.SHA512;
public SignableData(byte[] dataToSign) {
this.dataToSign = dataToSign;
}
public String calculateHashInBase64() {
byte[] digest = calculateHash();
return Base64.encodeBase64String(digest);
}
public byte[] calculateHash() {
return DigestCalculator.calculateDigest(dataToSign, hashType);
}
/**
* Calculates the verification code from the data
*
* Verification code should be displayed on the web page or some sort of web service
* so the person signing through the Smart-ID mobile app can verify if the verification code
* displayed on the phone matches with the one shown on the web page.
*
* @return the verification code
*/
public String calculateVerificationCode() {
byte[] digest = calculateHash();
return VerificationCodeCalculator.calculate(digest);
}
public void setHashType(HashType hashType) {
this.hashType = hashType;
}
public HashType getHashType() {
return hashType;
}
}