Added some non-working C decryption code :-/

c/decrypt_emotiv.c

@@ -0,0 +1,59 @@
+/* Decrypt Emotic EPOC stream using ECB and RIJNDAEL-128 cipher
+ * 
+ * Usage: decrypt_emotiv /dev/emotiv/raw > decoded
+ * */
+
+#include <mcrypt.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#define KEYSIZE 16 /* 128 bits == 16 bytes */
+
+#define CONSUMERKEY {31,0,35,54,38,10,37,42,31,0,35,48,38,0,37,50}
+#define RESEARCHKEY {31,0,39,54,38,10,37,42,31,0,39,48,38,0,37,50}
+
+int main(int argc, char **argv)
+{
+  MCRYPT td;
+  int i;
+  unsigned char key[KEYSIZE] = RESEARCHKEY;
+  char *block_buffer;
+  int blocksize;
+
+  FILE *input;
+  if (argc < 2)
+  {
+    fputs("Missing argument\nExpected: decrypt_emotiv source\n", stderr);
+    return 1;
+  }
+
+  input = fopen(argv[1], "rb");
+  if (input == NULL)
+  {
+    fputs("File read error", stderr);
+    return 1;
+  }
+
+  td = mcrypt_module_open(MCRYPT_RIJNDAEL_128, NULL, MCRYPT_ECB, NULL);
+  blocksize = mcrypt_enc_get_block_size(td); //should return a 16bits blocksize
+  //printf( "%d", blocksize);
+
+  block_buffer = malloc(blocksize);
+
+  mcrypt_generic_init( td, key, KEYSIZE, NULL);
+
+  while ( fread (block_buffer, 1, blocksize, input) == blocksize ) {
+//for (i=0; i<1024 ; i++){
+//    fread (block_buffer, 1, blocksize, input);
+      //mcrypt_generic (td, block_buffer, blocksize);
+      mdecrypt_generic (td, block_buffer, blocksize);
+      fwrite ( block_buffer, 1, blocksize, stdout);
+  }
+
+  mcrypt_generic_deinit (td);
+  mcrypt_module_close(td);
+
+  fclose(input);
+
+  return 0;
+}