lilliput-ae-reference-implementation

commit bb6103c6629abf11730929c1a9b735af1f3983c5
parent 0034747fd91b5d1b5d6375eb295a79f5221de84a
Author: Kévin Le Gouguec <kevin.legouguec@airbus.com>
Date:   Tue, 27 Nov 2018 10:08:26 +0100

Ajout des prototypes des sous-fonctions SCT-2

Diffstat:
M
src/lilliput-ae-ii.c
 | 
56
++++++++++++++++++++++++++++++++++++++++++++++++++++++++

1 file changed, 56 insertions(+), 0 deletions(-)
diff --git a/src/lilliput-ae-ii.c b/src/lilliput-ae-ii.c
@@ -6,6 +6,49 @@
 #include "lilliput-ae.h"
 
 
+static void _process_associated_data(
+    const uint8_t key[KEY_BYTES],
+    size_t        A_len,
+    const uint8_t A[A_len],
+    uint8_t       Auth[BLOCK_BYTES]
+)
+{
+}
+
+static void _generate_tag(
+    const uint8_t key[KEY_BYTES],
+    size_t        M_len,
+    const uint8_t M[M_len],
+    const uint8_t N[NONCE_BYTES],
+    const uint8_t Auth[BLOCK_BYTES],
+    uint8_t       tag[TAG_BYTES]
+)
+{
+}
+
+static void _encrypt_message(
+    const uint8_t key[KEY_BYTES],
+    size_t        M_len,
+    const uint8_t M[M_len],
+    const uint8_t N[NONCE_BYTES],
+    const uint8_t tag[TAG_BYTES],
+    uint8_t       C[M_len]
+)
+{
+}
+
+static void _decrypt_message(
+    const uint8_t key[KEY_BYTES],
+    size_t C_len,
+    const uint8_t C[C_len],
+    const uint8_t N[NONCE_BYTES],
+    const uint8_t tag[TAG_BYTES],
+    uint8_t       M[C_len]
+)
+{
+}
+
+
 void lilliput_ae_encrypt(
     size_t        message_len,
     const uint8_t message[message_len],
@@ -17,6 +60,12 @@ void lilliput_ae_encrypt(
     uint8_t       tag[TAG_BYTES]
 )
 {
+    uint8_t auth[BLOCK_BYTES];
+    _process_associated_data(key, auth_data_len, auth_data, auth);
+
+    _generate_tag(key, message_len, message, nonce, auth, tag);
+
+    _encrypt_message(key, message_len, message, nonce, tag, ciphertext);
 }
 
 bool lilliput_ae_decrypt(
@@ -30,6 +79,13 @@ bool lilliput_ae_decrypt(
     uint8_t       message[ciphertext_len]
 )
 {
+    _decrypt_message(key, ciphertext_len, ciphertext, nonce, tag, message);
+
+    uint8_t auth[BLOCK_BYTES];
+    _process_associated_data(key, auth_data_len, auth_data, auth);
+
     uint8_t effective_tag[TAG_BYTES];
+    _generate_tag(key, ciphertext_len, message, nonce, auth, effective_tag);
+
     return memcmp(tag, effective_tag, TAG_BYTES) == 0;
 }