OSX/libsecurity_transform/lib/SecDigestTransform.cpp

   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 }