本文整理匯總了C#中iTextSharp.text.pdf.PdfEncryption.SetupByOwnerPassword方法的典型用法代碼示例。如果您正苦於以下問題：C# PdfEncryption.SetupByOwnerPassword方法的具體用法？C# PdfEncryption.SetupByOwnerPassword怎麽用？C# PdfEncryption.SetupByOwnerPassword使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類iTextSharp.text.pdf.PdfEncryption的用法示例。
在下文中一共展示了PdfEncryption.SetupByOwnerPassword方法的2個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的C#代碼示例。
示例1: ReadDecryptedDocObj
//.........這裏部分代碼省略.........
if (dic == null)
throw new InvalidPdfException(MessageLocalization.GetComposedMessage("defaultcryptfilter.not.found.encryption"));
if (PdfName.V2.Equals(dic.Get(PdfName.CFM))) {
cryptoMode = PdfWriter.STANDARD_ENCRYPTION_128;
lengthValue = 128;
}
else if (PdfName.AESV2.Equals(dic.Get(PdfName.CFM))) {
cryptoMode = PdfWriter.ENCRYPTION_AES_128;
lengthValue = 128;
}
else if (PdfName.AESV3.Equals(dic.Get(PdfName.CFM))) {
cryptoMode = PdfWriter.ENCRYPTION_AES_256;
lengthValue = 256;
}
else
throw new UnsupportedPdfException(MessageLocalization.GetComposedMessage("no.compatible.encryption.found"));
PdfObject em = dic.Get(PdfName.ENCRYPTMETADATA);
if (em != null && em.ToString().Equals("false"))
cryptoMode |= PdfWriter.DO_NOT_ENCRYPT_METADATA;
recipients = (PdfArray)dic.Get(PdfName.RECIPIENTS);
break;
default:
throw new UnsupportedPdfException(MessageLocalization.GetComposedMessage("unknown.encryption.type.v.eq.1", vValue));
}
for (int i = 0; i<recipients.Size; i++)
{
PdfObject recipient = recipients[i];
if (recipient is PdfString)
strings.Remove((PdfString)recipient);
CmsEnvelopedData data = null;
data = new CmsEnvelopedData(recipient.GetBytes());
foreach (RecipientInformation recipientInfo in data.GetRecipientInfos().GetRecipients()) {
if (recipientInfo.RecipientID.Match(certificate) && !foundRecipient) {
envelopedData = recipientInfo.GetContent(certificateKey);
foundRecipient = true;
}
}
}
if (!foundRecipient || envelopedData == null)
{
throw new UnsupportedPdfException(MessageLocalization.GetComposedMessage("bad.certificate.and.key"));
}
IDigest sh;
if ((cryptoMode & PdfWriter.ENCRYPTION_MASK) == PdfWriter.ENCRYPTION_AES_256)
sh = DigestUtilities.GetDigest("SHA-256");
else
sh = DigestUtilities.GetDigest("SHA-1");
sh.BlockUpdate(envelopedData, 0, 20);
for (int i=0; i<recipients.Size; i++) {
byte[] encodedRecipient = recipients[i].GetBytes();
sh.BlockUpdate(encodedRecipient, 0, encodedRecipient.Length);
}
if ((cryptoMode & PdfWriter.DO_NOT_ENCRYPT_METADATA) != 0)
sh.BlockUpdate(PdfEncryption.metadataPad, 0, PdfEncryption.metadataPad.Length);
encryptionKey = new byte[sh.GetDigestSize()];
sh.DoFinal(encryptionKey, 0);
}
decrypt = new PdfEncryption();
decrypt.SetCryptoMode(cryptoMode, lengthValue);
if (filter.Equals(PdfName.STANDARD)) {
if (rValue == 5) {
ownerPasswordUsed = decrypt.ReadKey(enc, password);
pValue = decrypt.GetPermissions();
}
else {
//check by owner password
decrypt.SetupByOwnerPassword(documentID, password, uValue, oValue, pValue);
if (!EqualsArray(uValue, decrypt.userKey, (rValue == 3 || rValue == 4) ? 16 : 32)) {
//check by user password
decrypt.SetupByUserPassword(documentID, password, oValue, pValue);
if (!EqualsArray(uValue, decrypt.userKey, (rValue == 3 || rValue == 4) ? 16 : 32)) {
throw new BadPasswordException(MessageLocalization.GetComposedMessage("bad.user.password"));
}
}
else
ownerPasswordUsed = true;
}
} else if (filter.Equals(PdfName.PUBSEC)) {
if ((cryptoMode & PdfWriter.ENCRYPTION_MASK) == PdfWriter.ENCRYPTION_AES_256)
decrypt.SetKey(encryptionKey);
else
decrypt.SetupByEncryptionKey(encryptionKey, lengthValue);
ownerPasswordUsed = true;
}
for (int k = 0; k < strings.Count; ++k) {
PdfString str = strings[k];
str.Decrypt(this);
}
if (encDic.IsIndirect()) {
cryptoRef = (PRIndirectReference)encDic;
xrefObj[cryptoRef.Number] = null;
}
encryptionError = false;
}示例2: ReadDecryptedDocObj
//.........這裏部分代碼省略.........
o = enc.Get(PdfName.LENGTH);
if (!o.IsNumber())
throw new InvalidPdfException("Illegal Length value.");
lengthValue = ( (PdfNumber) o).IntValue;
if (lengthValue > 128 || lengthValue < 40 || lengthValue % 8 != 0)
throw new InvalidPdfException("Illegal Length value.");
cryptoMode = PdfWriter.STANDARD_ENCRYPTION_128;
recipients = (PdfArray)enc.Get(PdfName.RECIPIENTS);
break;
case 4:
PdfDictionary dic = (PdfDictionary)enc.Get(PdfName.CF);
if (dic == null)
throw new InvalidPdfException("/CF not found (encryption)");
dic = (PdfDictionary)dic.Get(PdfName.DEFAULTCRYPTFILTER);
if (dic == null)
throw new InvalidPdfException("/DefaultCryptFilter not found (encryption)");
if (PdfName.V2.Equals(dic.Get(PdfName.CFM))) {
cryptoMode = PdfWriter.STANDARD_ENCRYPTION_128;
lengthValue = 128;
}
else if (PdfName.AESV2.Equals(dic.Get(PdfName.CFM))) {
cryptoMode = PdfWriter.ENCRYPTION_AES_128;
lengthValue = 128;
}
else
throw new UnsupportedPdfException("No compatible encryption found");
PdfObject em = dic.Get(PdfName.ENCRYPTMETADATA);
if (em != null && em.ToString().Equals("false"))
cryptoMode |= PdfWriter.DO_NOT_ENCRYPT_METADATA;
recipients = (PdfArray)dic.Get(PdfName.RECIPIENTS);
break;
default:
throw new UnsupportedPdfException("Unknown encryption type V = " + rValue);
}
for (int i = 0; i<recipients.Size; i++)
{
PdfObject recipient = recipients[i];
strings.Remove(recipient);
CmsEnvelopedData data = null;
data = new CmsEnvelopedData(recipient.GetBytes());
foreach (RecipientInformation recipientInfo in data.GetRecipientInfos().GetRecipients()) {
if (recipientInfo.RecipientID.Match(certificate) && !foundRecipient) {
envelopedData = recipientInfo.GetContent(certificateKey);
foundRecipient = true;
}
}
}
if (!foundRecipient || envelopedData == null)
{
throw new UnsupportedPdfException("Bad certificate and key.");
}
SHA1 sh = new SHA1CryptoServiceProvider();
sh.TransformBlock(envelopedData, 0, 20, envelopedData, 0);
for (int i=0; i<recipients.Size; i++) {
byte[] encodedRecipient = recipients[i].GetBytes();
sh.TransformBlock(encodedRecipient, 0, encodedRecipient.Length, encodedRecipient, 0);
}
if ((cryptoMode & PdfWriter.DO_NOT_ENCRYPT_METADATA) != 0)
sh.TransformBlock(PdfEncryption.metadataPad, 0, PdfEncryption.metadataPad.Length, PdfEncryption.metadataPad, 0);
sh.TransformFinalBlock(envelopedData, 0, 0);
encryptionKey = sh.Hash;
}
decrypt = new PdfEncryption();
decrypt.SetCryptoMode(cryptoMode, lengthValue);
if (filter.Equals(PdfName.STANDARD))
{
//check by owner password
decrypt.SetupByOwnerPassword(documentID, password, uValue, oValue, pValue);
if (!EqualsArray(uValue, decrypt.userKey, (rValue == 3 || rValue == 4) ? 16 : 32)) {
//check by user password
decrypt.SetupByUserPassword(documentID, password, oValue, pValue);
if (!EqualsArray(uValue, decrypt.userKey, (rValue == 3 || rValue == 4) ? 16 : 32)) {
throw new BadPasswordException("Bad user password");
}
}
else
ownerPasswordUsed = true;
} else if (filter.Equals(PdfName.PUBSEC)) {
decrypt.SetupByEncryptionKey(encryptionKey, lengthValue);
ownerPasswordUsed = true;
}
for (int k = 0; k < strings.Count; ++k) {
PdfString str = (PdfString)strings[k];
str.Decrypt(this);
}
if (encDic.IsIndirect()) {
cryptoRef = (PRIndirectReference)encDic;
xrefObj[cryptoRef.Number] = null;
}
encryptionError = false;
}