1  #include "SecDigestTransform.h"
 2  #include "SecCFRelease.h"
 3  #include "Digest.h"
 4  
 5  
 6  
 7  const CFStringRef kSecDigestMD2 = CFSTR("MD2 Digest"),
 8  				  kSecDigestMD4 = CFSTR("MD4 Digest"),
 9  				  kSecDigestMD5 = CFSTR("MD5 Digest"),
10  				  kSecDigestSHA1 = CFSTR("SHA1 Digest"),
11  				  kSecDigestSHA2 = CFSTR("SHA2 Digest Family"),
12  				  kSecDigestHMACMD5 = CFSTR("HMAC-MD5"),
13  				  kSecDigestHMACSHA1 = CFSTR("HMAC-SHA1"),
14  				  kSecDigestHMACSHA2 = CFSTR("HMAC-SHA2 Digest Family");
15  
16  const CFStringRef kSecDigestTypeAttribute = CFSTR("Digest Type"),
17  				  kSecDigestLengthAttribute = CFSTR("Digest Length"),
18  				  kSecDigestHMACKeyAttribute = CFSTR("HMAC Key");
19  
20  SecTransformRef SecDigestTransformCreate(CFTypeRef digestType,
21  										 CFIndex digestLength,
22  										 CFErrorRef* error
23  										 )
24  {
25  	SecTransformRef tr = DigestTransform::Make();
26  	DigestTransform* dt = (DigestTransform*) CoreFoundationHolder::ObjectFromCFType(tr);
27  	
28  	CFErrorRef result = dt->Setup(digestType, digestLength);
29  	if (result != NULL)
30  	{
31  		// an error occurred
32  		CFReleaseNull(tr);
33  		
34  		if (error)
35  		{
36              CFRetainSafe(result);
37  			*error = result;
38  		}
39  		
40  		return NULL;
41  	}
42  	
43  	return tr;
44  }
45  
46  
47  
48  CFTypeID SecDigestTransformGetTypeID()
49  {
50  	return DigestTransform::GetCFTypeID();
51  }