/**
* Decode the input using a particular wire format and update this
* EncryptedContent.
* @param input The input byte array to be decoded.
* @param inputLength The length of input.
* @param wireFormat (optional) A WireFormat object used to decode the input.
* If omitted, use WireFormat::getDefaultWireFormat().
*/
void
wireDecode
(const uint8_t *input, size_t inputLength,
WireFormat& wireFormat = *WireFormat::getDefaultWireFormat())
{
wireFormat.decodeEncryptedContent(*this, input, inputLength);
}
uint16_t Client::sendPacket( const WireFormat &data )
{
if ( udp_socket < 0 )
openSocket();
return data.send( udp_socket, NULL, 0 );
}
void
KeyChain::sign
(Interest& interest, const Name& certificateName, WireFormat& wireFormat)
{
// TODO: Handle signature algorithms other than Sha256WithRsa.
Sha256WithRsaSignature signature;
signature.getKeyLocator().setType(ndn_KeyLocatorType_KEYNAME);
signature.getKeyLocator().setKeyName(certificateName.getPrefix(-1));
// Append the encoded SignatureInfo.
interest.getName().append(wireFormat.encodeSignatureInfo(signature));
// Append an empty signature so that the "signedPortion" is correct.
interest.getName().append(Name::Component());
// Encode once to get the signed portion, and sign.
SignedBlob encoding = interest.wireEncode(wireFormat);
ptr_lib::shared_ptr<Signature> signedSignature = sign
(encoding.signedBuf(), encoding.signedSize(), certificateName);
// Remove the empty signature and append the real one.
interest.setName(interest.getName().getPrefix(-1).append
(wireFormat.encodeSignatureValue(*signedSignature)));
}
void
IdentityManager::signInterestWithSha256
(Interest& interest, WireFormat& wireFormat)
{
DigestSha256Signature signature;
// Append the encoded SignatureInfo.
interest.getName().append(wireFormat.encodeSignatureInfo(signature));
// Append an empty signature so that the "signedPortion" is correct.
interest.getName().append(Name::Component());
// Encode once to get the signed portion.
SignedBlob encoding = interest.wireEncode(wireFormat);
// Digest and set the signature.
uint8_t signedPortionDigest[ndn_SHA256_DIGEST_SIZE];
ndn_digestSha256
(encoding.signedBuf(), encoding.signedSize(), signedPortionDigest);
signature.setSignature(Blob(signedPortionDigest, sizeof(signedPortionDigest)));
// Remove the empty signature and append the real one.
interest.setName(interest.getName().getPrefix(-1).append
(wireFormat.encodeSignatureValue(signature)));
}
void
Data::wireDecode(const Blob& input, WireFormat& wireFormat)
{
size_t signedPortionBeginOffset, signedPortionEndOffset;
wireFormat.decodeData(*this, input.buf(), input.size(), &signedPortionBeginOffset, &signedPortionEndOffset);
if (&wireFormat == WireFormat::getDefaultWireFormat())
// This is the default wire encoding.
// Take a pointer to the input Blob without copying.
setDefaultWireEncoding
(SignedBlob(input, signedPortionBeginOffset, signedPortionEndOffset),
WireFormat::getDefaultWireFormat());
else
setDefaultWireEncoding(SignedBlob(), 0);
}
void
IdentityManager::signInterestByCertificate
(Interest& interest, const Name& certificateName, WireFormat& wireFormat)
{
DigestAlgorithm digestAlgorithm;
ptr_lib::shared_ptr<Signature> signature = makeSignatureByCertificate
(certificateName, digestAlgorithm);
// Append the encoded SignatureInfo.
interest.getName().append(wireFormat.encodeSignatureInfo(*signature));
// Append an empty signature so that the "signedPortion" is correct.
interest.getName().append(Name::Component());
// Encode once to get the signed portion, and sign.
SignedBlob encoding = interest.wireEncode(wireFormat);
signature->setSignature
(privateKeyStorage_->sign(encoding.signedBuf(), encoding.signedSize(),
IdentityCertificate::certificateNameToPublicKeyName(certificateName),
digestAlgorithm));
// Remove the empty signature and append the real one.
interest.setName(interest.getName().getPrefix(-1).append
(wireFormat.encodeSignatureValue(*signature)));
}
SignedBlob
Data::wireEncode(WireFormat& wireFormat) const
{
if (getDefaultWireEncoding() && getDefaultWireEncodingFormat() == &wireFormat)
// We already have an encoding in the desired format.
return getDefaultWireEncoding();
size_t signedPortionBeginOffset, signedPortionEndOffset;
Blob encoding = wireFormat.encodeData(*this, &signedPortionBeginOffset, &signedPortionEndOffset);
SignedBlob wireEncoding = SignedBlob(encoding, signedPortionBeginOffset, signedPortionEndOffset);
if (&wireFormat == WireFormat::getDefaultWireFormat())
// This is the default wire encoding.
const_cast<Data*>(this)->setDefaultWireEncoding
(wireEncoding, WireFormat::getDefaultWireFormat());
return wireEncoding;
}
ptr_lib::shared_ptr<ValidationRequest>
SelfVerifyPolicyManager::checkVerificationPolicy
(const ptr_lib::shared_ptr<Interest>& interest, int stepCount,
const OnVerifiedInterest& onVerified,
const OnVerifyInterestFailed& onVerifyFailed, WireFormat& wireFormat)
{
// Decode the last two name components of the signed interest
ptr_lib::shared_ptr<Signature> signature =
wireFormat.decodeSignatureInfoAndValue
(interest->getName().get(-2).getValue().buf(),
interest->getName().get(-2).getValue().size(),
interest->getName().get(-1).getValue().buf(),
interest->getName().get(-1).getValue().size());
// wireEncode returns the cached encoding if available.
if (verify(signature.get(), interest->wireEncode()))
onVerified(interest);
else
onVerifyFailed(interest);
// No more steps, so return a null ValidationRequest.
return ptr_lib::shared_ptr<ValidationRequest>();
}
void
wireDecode(const uint8_t *input, size_t inputLength, WireFormat& wireFormat = *WireFormat::getDefaultWireFormat())
{
wireFormat.decodeControlParameters(*this, input, inputLength);
}
Blob
wireEncode(WireFormat& wireFormat = *WireFormat::getDefaultWireFormat()) const
{
return wireFormat.encodeControlParameters(*this);
}
/**
* Encode this EncryptedContent for a particular wire format.
* @param wireFormat (optional) A WireFormat object used to encode this
* EncryptedContent. If omitted, use WireFormat::getDefaultWireFormat().
* @return The encoded byte array.
*/
Blob
wireEncode(WireFormat& wireFormat = *WireFormat::getDefaultWireFormat()) const
{
return wireFormat.encodeEncryptedContent(*this);
}
void
wireDecode(const uint8_t *input, size_t inputLength, WireFormat& wireFormat = *WireFormat::getDefaultWireFormat())
{
wireFormat.decodeForwardingEntry(*this, input, inputLength);
}
Blob
wireEncode(WireFormat& wireFormat = *WireFormat::getDefaultWireFormat()) const
{
return wireFormat.encodeForwardingEntry(*this);
}
