diff --git a/client/src/mifare/desfire_crypto.c b/client/src/mifare/desfire_crypto.c
index e3e785e6c..3c27e1ca4 100644
--- a/client/src/mifare/desfire_crypto.c
+++ b/client/src/mifare/desfire_crypto.c
@@ -53,18 +53,6 @@ static inline void update_key_schedules(desfirekey_t key) {
 
 /******************************************************************************/
 
-void des_encrypt(void *out, const void *in, const void *key) {
-    mbedtls_des_context ctx;
-    mbedtls_des_setkey_enc(&ctx, key);
-    mbedtls_des_crypt_ecb(&ctx, in, out);
-}
-
-void des_decrypt(void *out, const void *in, const void *key) {
-    mbedtls_des_context ctx;
-    mbedtls_des_setkey_dec(&ctx, key);
-    mbedtls_des_crypt_ecb(&ctx, in, out);
-}
-
 void tdes_nxp_receive(const void *in, void *out, size_t length, const void *key, unsigned char iv[8], int keymode) {
     if (length % 8)
         return;
diff --git a/client/src/mifare/desfire_crypto.h b/client/src/mifare/desfire_crypto.h
index ecc6fc4a5..b58372004 100644
--- a/client/src/mifare/desfire_crypto.h
+++ b/client/src/mifare/desfire_crypto.h
@@ -102,8 +102,6 @@ typedef unsigned long DES3_KS[48][2];  /* Triple-DES key schedule */
 
 extern int Asmversion; /* 1 if we're linked with an asm version, 0 if C */
 
-void des_encrypt(void *out, const void *in, const void *key);
-void des_decrypt(void *out, const void *in, const void *key);
 void tdes_nxp_receive(const void *in, void *out, size_t length, const void *key, unsigned char iv[8], int keymode);
 void tdes_nxp_send(const void *in, void *out, size_t length, const void *key, unsigned char iv[8], int keymode);
 void Desfire_des_key_new(const uint8_t value[8], desfirekey_t key);