diff --git a/crypto/src/cms/CMSCompressedDataGenerator.cs b/crypto/src/cms/CMSCompressedDataGenerator.cs
index 872c4a144..70515e8d3 100644
--- a/crypto/src/cms/CMSCompressedDataGenerator.cs
+++ b/crypto/src/cms/CMSCompressedDataGenerator.cs
@@ -21,10 +21,7 @@ namespace Org.BouncyCastle.Cms
*/
public class CmsCompressedDataGenerator
{
- public const string ZLibOid = "1.2.840.113549.1.9.16.3.8";
-
- [Obsolete("Use 'ZLibOid' instead")]
- public const string ZLib = ZLibOid;
+ public static readonly string ZLib = CmsObjectIdentifiers.ZlibCompress.Id;
public CmsCompressedDataGenerator()
{
@@ -33,10 +30,12 @@ namespace Org.BouncyCastle.Cms
/**
* Generate an object that contains an CMS Compressed Data
*/
- public CmsCompressedData Generate(
- CmsProcessable content,
- string compressionOid)
+ public CmsCompressedData Generate(CmsProcessable content, string compressionOid)
{
+ if (ZLib != compressionOid)
+ throw new ArgumentException("Unsupported compression algorithm: " + compressionOid,
+ nameof(compressionOid));
+
AlgorithmIdentifier comAlgId;
Asn1OctetString comOcts;
@@ -49,7 +48,7 @@ namespace Org.BouncyCastle.Cms
Platform.Dispose(zOut);
- comAlgId = new AlgorithmIdentifier(new DerObjectIdentifier(compressionOid));
+ comAlgId = new AlgorithmIdentifier(CmsObjectIdentifiers.ZlibCompress);
comOcts = new BerOctetString(bOut.ToArray());
}
catch (IOException e)
diff --git a/crypto/src/cms/CMSCompressedDataStreamGenerator.cs b/crypto/src/cms/CMSCompressedDataStreamGenerator.cs
index 855367320..1594500cd 100644
--- a/crypto/src/cms/CMSCompressedDataStreamGenerator.cs
+++ b/crypto/src/cms/CMSCompressedDataStreamGenerator.cs
@@ -26,13 +26,10 @@ namespace Org.BouncyCastle.Cms
*/
public class CmsCompressedDataStreamGenerator
{
- public const string ZLibOid = "1.2.840.113549.1.9.16.3.8";
+ public static readonly string ZLib = CmsObjectIdentifiers.ZlibCompress.Id;
- [Obsolete("Use 'ZLibOid' instead")]
- public const string ZLib = ZLibOid;
+ private int _bufferSize;
- private int _bufferSize;
-
/**
* base constructor
*/
@@ -45,24 +42,27 @@ namespace Org.BouncyCastle.Cms
*
* @param bufferSize length of octet strings to buffer the data.
*/
- public void SetBufferSize(
- int bufferSize)
+ public void SetBufferSize(int bufferSize)
{
_bufferSize = bufferSize;
}
- public Stream Open(
- Stream outStream,
- string compressionOID)
+ public Stream Open(Stream outStream)
+ {
+ return Open(outStream, CmsObjectIdentifiers.Data.Id, ZLib);
+ }
+
+ public Stream Open(Stream outStream, string compressionOid)
{
- return Open(outStream, CmsObjectIdentifiers.Data.Id, compressionOID);
+ return Open(outStream, CmsObjectIdentifiers.Data.Id, compressionOid);
}
- public Stream Open(
- Stream outStream,
- string contentOID,
- string compressionOID)
+ public Stream Open(Stream outStream, string contentOid, string compressionOid)
{
+ if (ZLib != compressionOid)
+ throw new ArgumentException("Unsupported compression algorithm: " + compressionOid,
+ nameof(compressionOid));
+
BerSequenceGenerator sGen = new BerSequenceGenerator(outStream);
sGen.AddObject(CmsObjectIdentifiers.CompressedData);
@@ -77,14 +77,14 @@ namespace Org.BouncyCastle.Cms
cGen.AddObject(new DerInteger(0));
// CompressionAlgorithmIdentifier
- cGen.AddObject(new AlgorithmIdentifier(new DerObjectIdentifier(ZLib)));
+ cGen.AddObject(new AlgorithmIdentifier(CmsObjectIdentifiers.ZlibCompress));
//
// Encapsulated ContentInfo
//
BerSequenceGenerator eiGen = new BerSequenceGenerator(cGen.GetRawOutputStream());
- eiGen.AddObject(new DerObjectIdentifier(contentOID));
+ eiGen.AddObject(new DerObjectIdentifier(contentOid));
Stream octetStream = CmsUtilities.CreateBerOctetOutputStream(
eiGen.GetRawOutputStream(), 0, true, _bufferSize);
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