Example usage for org.bouncycastle.asn1.tsp MessageImprint getHashedMessage

Introduction

In this page you can find the example usage for org.bouncycastle.asn1.tsp MessageImprint getHashedMessage.

Prototype

public byte[] getHashedMessage() 

Source Link

Usage

From source file:com.itextpdf.signatures.PdfPKCS7.java

License:Open Source License

/**
 * Verify the digest.//from ww w  .  j  a va2 s.  c  o m
 *
 * @return <CODE>true</CODE> if the signature checks out, <CODE>false</CODE> otherwise
 * @throws SignatureException                     on error
 * @throws java.security.GeneralSecurityException
 */
public boolean verify() throws GeneralSecurityException {
    if (verified)
        return verifyResult;
    if (isTsp) {
        TimeStampTokenInfo info = timeStampToken.getTimeStampInfo();
        MessageImprint imprint = info.toASN1Structure().getMessageImprint();
        byte[] md = messageDigest.digest();
        byte[] imphashed = imprint.getHashedMessage();
        verifyResult = Arrays.equals(md, imphashed);
    } else {
        if (sigAttr != null || sigAttrDer != null) {
            final byte[] msgDigestBytes = messageDigest.digest();
            boolean verifyRSAdata = true;
            // Stefan Santesson fixed a bug, keeping the code backward compatible
            boolean encContDigestCompare = false;
            if (RSAdata != null) {
                verifyRSAdata = Arrays.equals(msgDigestBytes, RSAdata);
                encContDigest.update(RSAdata);
                encContDigestCompare = Arrays.equals(encContDigest.digest(), digestAttr);
            }
            boolean absentEncContDigestCompare = Arrays.equals(msgDigestBytes, digestAttr);
            boolean concludingDigestCompare = absentEncContDigestCompare || encContDigestCompare;
            boolean sigVerify = verifySigAttributes(sigAttr) || verifySigAttributes(sigAttrDer);
            verifyResult = concludingDigestCompare && sigVerify && verifyRSAdata;
        } else {
            if (RSAdata != null)
                sig.update(messageDigest.digest());
            verifyResult = sig.verify(digest);
        }
    }
    verified = true;
    return verifyResult;
}

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From source file:com.itextpdf.signatures.PdfPKCS7.java

License:Open Source License

/**
 * Checks if the timestamp refers to this document.
 *
 * @return true if it checks false otherwise
 * @throws GeneralSecurityException on error
 *///from   w  ww  .  j  a v a2 s . c o  m
public boolean verifyTimestampImprint() throws GeneralSecurityException {
    if (timeStampToken == null)
        return false;
    TimeStampTokenInfo info = timeStampToken.getTimeStampInfo();
    MessageImprint imprint = info.toASN1Structure().getMessageImprint();
    String algOID = info.getHashAlgorithm().getAlgorithm().getId();
    byte[] md = SignUtils.getMessageDigest(DigestAlgorithms.getDigest(algOID)).digest(digest);
    byte[] imphashed = imprint.getHashedMessage();
    return Arrays.equals(md, imphashed);
}

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From source file:com.itextpdf.text.pdf.PdfPKCS7.java

License:Open Source License

/**
 * Checks if the timestamp refers to this document.
 * @throws java.security.NoSuchAlgorithmException on error
 * @return true if it checks false otherwise
 * @since   2.1.6// ww w  .  j  ava 2s .c  om
 */
public boolean verifyTimestampImprint() throws NoSuchAlgorithmException {
    if (timeStampToken == null)
        return false;
    MessageImprint imprint = timeStampToken.getTimeStampInfo().toTSTInfo().getMessageImprint();
    byte[] md = MessageDigest.getInstance("SHA-1").digest(digest);
    byte[] imphashed = imprint.getHashedMessage();
    boolean res = Arrays.equals(md, imphashed);
    return res;
}

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From source file:com.itextpdf.text.pdf.security.PdfPKCS7.java

License:Open Source License

/**
 * Checks if the timestamp refers to this document.
 * @return true if it checks false otherwise
 * @throws GeneralSecurityException on error
 * @since   2.1.6// ww w . ja v  a 2  s  .  co  m
 */
public boolean verifyTimestampImprint() throws GeneralSecurityException {
    if (timeStampToken == null)
        return false;
    TimeStampTokenInfo info = timeStampToken.getTimeStampInfo();
    MessageImprint imprint = info.toASN1Structure().getMessageImprint();
    String algOID = info.getMessageImprintAlgOID().getId();
    byte[] md = new BouncyCastleDigest().getMessageDigest(DigestAlgorithms.getDigest(algOID)).digest(digest);
    byte[] imphashed = imprint.getHashedMessage();
    boolean res = Arrays.equals(md, imphashed);
    return res;
}

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