MD5 Hash on iPhone

Hi,

I'm trying to create a PHP compatible MD5 hash of a NSString object - and have found several posts on these forums explaining how to use the CommonDigest header to achieve it.

What I have is:

NSString * md5( NSString *str )
{
const char *cStr = [str NSASCIIStringEncoding];
unsigned char result[CC MD5_DIGESTLENGTH];
CC_MD5( cStr, strlen(cStr), result );
return [NSString stringWithFormat:
@"%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X",
result[0], result[1], result[2], result[3], result[4], result[5], result[6], result[7],
result[8], result[9], result[10], result[11], result[12], result[13], result[14], result[15]
];
}


But this doesn't seem to produce the same result as this Java code

// This is used by md5 hash
private String hex(byte[] array) {
StringBuffer sb = new StringBuffer();
for (int i = 0; i < array.length; ++i) {
sb.append(Integer.toHexString((array & 0xFF) | 0x100).substring(1, 3));
}
return sb.toString();
}
/**
* Generates a PHP compatible md5 hash
*/
private String md5(String message) {
try {
MessageDigest md = MessageDigest.getInstance("MD5");
return hex(md.digest(message.getBytes("CP1252")));
} catch (NoSuchAlgorithmException e) {
} catch (UnsupportedEncodingException e) {
}
return null;
}
Can anybody shed any light on how I can get CommonDigest to produce the same MD5 as the one produced by the Java code?
Many thanks
John