private AsymmetricAlgorithm CheckSignatureInternal (AsymmetricAlgorithm key)
{
pkEnumerator = null;
if (key != null) {
// check with supplied key
if (!CheckSignatureWithKey (key))
return null;
} else {
if (Signature.KeyInfo == null)
return null;
// no supplied key, iterates all KeyInfo
while ((key = GetPublicKey ()) != null) {
if (CheckSignatureWithKey (key)) {
break;
}
}
pkEnumerator = null;
if (key == null)
return null;
}
// some parts may need to be downloaded
// so where doing it last
if (!CheckReferenceIntegrity (m_signature.SignedInfo.References))
return null;
if (manifests != null) {
// do not use foreach as a manifest could contain manifests...
for (int i=0; i < manifests.Count; i++) {
Manifest manifest = new Manifest ((manifests [i] as XmlDocument).DocumentElement);
if (! CheckReferenceIntegrity (manifest.References))
return null;
}
}
return key;
}
private AsymmetricAlgorithm CheckSignatureInternal(AsymmetricAlgorithm key)
{
pkEnumerator = null;
if (key != null)
{
// check with supplied key
if (!CheckSignatureWithKey(key))
{
return(null);
}
}
else
{
#if NET_2_0
if (Signature.KeyInfo == null)
{
return(null);
}
#else
if (Signature.KeyInfo == null)
{
throw new CryptographicException("At least one KeyInfo is required.");
}
#endif
// no supplied key, iterates all KeyInfo
while ((key = GetPublicKey()) != null)
{
if (CheckSignatureWithKey(key))
{
break;
}
}
pkEnumerator = null;
if (key == null)
{
return(null);
}
}
// some parts may need to be downloaded
// so where doing it last
if (!CheckReferenceIntegrity(m_signature.SignedInfo.References))
{
return(null);
}
if (manifests != null)
{
// do not use foreach as a manifest could contain manifests...
for (int i = 0; i < manifests.Count; i++)
{
Manifest manifest = new Manifest((manifests [i] as XmlDocument).DocumentElement);
if (!CheckReferenceIntegrity(manifest.References))
{
return(null);
}
}
}
return(key);
}
