From 1dd052e86fa45a215b68152977e0c7888eba9bf4 Mon Sep 17 00:00:00 2001
From: Egor Tensin <Egor.Tensin@gmail.com>
Date: Wed, 3 Jun 2015 21:32:49 +0300
Subject: add CFB mode

---
 include/aesni/api.h | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)

(limited to 'include/aesni/api.h')

diff --git a/include/aesni/api.h b/include/aesni/api.h
index 72e689b..6e30b65 100644
--- a/include/aesni/api.h
+++ b/include/aesni/api.h
@@ -55,6 +55,22 @@ static __inline AesBlock128 __fastcall aes128cbc_decrypt(
     return _mm_xor_si128(raw_aes128ecb_decrypt(cypher, inverted_schedule), init_vector);
 }
 
+static __inline AesBlock128 __fastcall aes128cfb_encrypt(
+    AesBlock128 plain,
+    Aes128KeySchedule* key_schedule,
+    AesBlock128 init_vector)
+{
+    return _mm_xor_si128(raw_aes128ecb_encrypt(init_vector, key_schedule), plain);
+}
+
+static __inline AesBlock128 __fastcall aes128cfb_decrypt(
+    AesBlock128 cypher,
+    Aes128KeySchedule* key_schedule,
+    AesBlock128 init_vector)
+{
+    return _mm_xor_si128(raw_aes128ecb_encrypt(init_vector, key_schedule), cypher);
+}
+
 static __inline void __fastcall aes192_expand_key_schedule(
     AesBlock192* key,
     Aes192KeySchedule* key_schedule)
@@ -99,6 +115,22 @@ static __inline AesBlock128 __fastcall aes192cbc_decrypt(
     return _mm_xor_si128(raw_aes192ecb_decrypt(cypher, inverted_schedule), init_vector);
 }
 
+static __inline AesBlock128 __fastcall aes192cfb_encrypt(
+    AesBlock128 plain,
+    Aes192KeySchedule* key_schedule,
+    AesBlock128 init_vector)
+{
+    return _mm_xor_si128(raw_aes192ecb_encrypt(init_vector, key_schedule), plain);
+}
+
+static __inline AesBlock128 __fastcall aes192cfb_decrypt(
+    AesBlock128 cypher,
+    Aes192KeySchedule* key_schedule,
+    AesBlock128 init_vector)
+{
+    return _mm_xor_si128(raw_aes192ecb_encrypt(init_vector, key_schedule), cypher);
+}
+
 static __inline void __fastcall aes256_expand_key_schedule(
     AesBlock256* key,
     Aes256KeySchedule* key_schedule)
@@ -142,3 +174,19 @@ static __inline AesBlock128 __fastcall aes256cbc_decrypt(
 {
     return _mm_xor_si128(raw_aes256ecb_decrypt(cypher, inverted_schedule), init_vector);
 }
+
+static __inline AesBlock128 __fastcall aes256cfb_encrypt(
+    AesBlock128 plain,
+    Aes256KeySchedule* key_schedule,
+    AesBlock128 init_vector)
+{
+    return _mm_xor_si128(raw_aes256ecb_encrypt(init_vector, key_schedule), plain);
+}
+
+static __inline AesBlock128 __fastcall aes256cfb_decrypt(
+    AesBlock128 cypher,
+    Aes256KeySchedule* key_schedule,
+    AesBlock128 init_vector)
+{
+    return _mm_xor_si128(raw_aes256ecb_encrypt(init_vector, key_schedule), cypher);
+}
-- 
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