Removed some redundant \0 string terminators

sys/crypto/3des/3des.c

@@ -44,7 +44,7 @@
  * @brief Interface to the 3DES cipher
  */
 block_cipher_interface_t tripledes_interface = {
-    "3DES\0",
+    "3DES",
     tripledes_init,
     tripledes_encrypt,
     tripledes_decrypt,

sys/crypto/aes/aes.c

@@ -40,7 +40,7 @@
  * Interface to the aes cipher
  */
 block_cipher_interface_t aes_interface = {
-    "AES\0",
+    "AES",
     aes_init,
     aes_encrypt,
     aes_decrypt,

sys/crypto/rc5/rc5.c

@@ -37,7 +37,7 @@
  * @brief Interface to the rc5 cipher
  */
 block_cipher_interface_t rc5_interface = {
-    "RC5\0",
+    "RC5",
     rc5_init,
     rc5_encrypt,
     rc5_decrypt,

sys/crypto/skipjack/skipjack.c

@@ -53,7 +53,7 @@
  * @brief Interface to the skipjack cipher
  */
 block_cipher_interface_t skipjack_interface = {
-    "SkipJack\0",
+    "SkipJack",
     skipjack_init,
     skipjack_encrypt,
     skipjack_decrypt,

sys/crypto/twofish/twofish.c

@@ -35,7 +35,7 @@ static int twofish_set_key(twofish_context_t *ctx, uint8_t *key, uint8_t keylen)
 
 // twofish interface
 block_cipher_interface_t twofish_interface = {
-    "TWOFISH\0",
+    "TWOFISH",
     twofish_init,
     twofish_encrypt,
     twofish_decrypt,