You are not generating Base64 output from the Android code, as is blindingly obvious by looking at your output and seeing that it is not Base64-encoded. I have no idea if EncodingUtils is supposed to support Base64 -- that's not documented.
On Fri, Jun 3, 2011 at 3:10 PM, [email protected] <[email protected]> wrote: > I'm using the following Android code to generate a HmacMD5 hash. When > I generate the hash from the Android App I get the following: > J0t��j#߸� bq- �. When I generate the hash from a .net console > application I get: SjB0j+xqI9+4hxticS0Cjw==. Notice the difference > and that the Android has has special chars in it. Is this a character > set issue? > > Aaron > > ============================================================== > Here's the Android code: > > public class HMACMD5 { > > private final String HMAC_MD5_NAME = "HmacMD5"; > > private SecretKeySpec sk; > private Mac mac; > > public HMACMD5(byte[] key) throws GeneralSecurityException { > init(key); > } > > public HMACMD5(String key) throws GeneralSecurityException { > init(EncodingUtils.getAsciiBytes(key)); > } > > private void init(byte[] key) throws GeneralSecurityException { > sk = new SecretKeySpec(key, HMAC_MD5_NAME); > mac = Mac.getInstance(HMAC_MD5_NAME); > mac.init(sk); > } > > public byte[] ComputeHash(byte[] data) { > return mac.doFinal(data); > } > > public byte[] ComputeHash(String data) { > return ComputeHash(EncodingUtils.getAsciiBytes(data)); > } > } > > public String encodeText(String sKey, String sSrc) throws Exception { > HMACMD5 hmacMD5 = new HMACMD5(sKey); > byte[] textBytes = EncodingUtils.getBytes(sSrc, "UTF-8"); > byte[] encodedTextBytes = hmacMD5.ComputeHash(textBytes); > String sEncodedText = EncodingUtils.getString(encodedTextBytes, > "BASE64"); > return sEncodedText; > } > > ============================================================== > Here's the .NET code: > > public static string EncodeText(byte[] key, string sText, Encoding > encoding) > { > HMACMD5 hmacMD5 = new HMACMD5(key); > byte[] textBytes = encoding.GetBytes(sText); > byte[] encodedTextBytes = hmacMD5.ComputeHash(textBytes); > string sEncodedText = Convert.ToBase64String(encodedTextBytes); > return sEncodedText; > } > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en > -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy _The Busy Coder's Guide to *Advanced* Android Development_ Version 1.9.3 Available! -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
