2 // System.Security.Cryptography.Pkcs.ContentInfo
5 // Sebastien Pouliot <sebastien@ximian.com>
7 // (C) 2003 Motus Technologies Inc. (http://www.motus.com)
8 // Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
10 // Permission is hereby granted, free of charge, to any person obtaining
11 // a copy of this software and associated documentation files (the
12 // "Software"), to deal in the Software without restriction, including
13 // without limitation the rights to use, copy, modify, merge, publish,
14 // distribute, sublicense, and/or sell copies of the Software, and to
15 // permit persons to whom the Software is furnished to do so, subject to
16 // the following conditions:
18 // The above copyright notice and this permission notice shall be
19 // included in all copies or substantial portions of the Software.
21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
34 namespace System.Security.Cryptography.Pkcs {
37 * ContentInfo ::= SEQUENCE {
38 * contentType ContentType,
39 * content [0] EXPLICIT ANY DEFINED BY contentType OPTIONAL
41 * ContentType ::= OBJECT IDENTIFIER
44 public sealed class ContentInfo {
47 private byte[] _content;
51 public ContentInfo (byte[] content)
52 : this (new Oid ("1.2.840.113549.1.7.1"), content)
56 public ContentInfo (Oid contentType, byte[] content)
58 if (contentType == null)
59 throw new ArgumentNullException ("contentType");
61 throw new ArgumentNullException ("content");
73 public byte[] Content {
74 get { return (byte[]) _content.Clone (); }
77 public Oid ContentType {
83 [MonoTODO ("MS is stricter than us about the content structure")]
84 public static Oid GetContentType (byte[] encodedMessage)
86 if (encodedMessage == null)
87 throw new ArgumentNullException ("algorithm");
90 PKCS7.ContentInfo ci = new PKCS7.ContentInfo (encodedMessage);
91 switch (ci.ContentType) {
93 case PKCS7.Oid.signedData: // see SignedCms class
94 case PKCS7.Oid.envelopedData: // see EnvelopedCms class
95 case PKCS7.Oid.digestedData:
96 case PKCS7.Oid.encryptedData:
97 return new Oid (ci.ContentType);
99 // Note: the constructor will accept any "valid" OID (but that
100 // doesn't mean it's a valid ContentType structure - ASN.1 wise).
101 string msg = Locale.GetText ("Bad ASN1 - invalid OID '{0}'");
102 throw new CryptographicException (String.Format (msg, ci.ContentType));
105 catch (Exception e) {
106 throw new CryptographicException (Locale.GetText ("Bad ASN1 - invalid structure"), e);