From ffc4468030398955ec56dac17934b43adfeab68b Mon Sep 17 00:00:00 2001
From: dimitri staessens <dimitri.staessens@ugent.be>
Date: Sun, 16 Apr 2017 09:40:32 +0200
Subject: lib: Fix minor things in sha3 implementation

---
 src/lib/sha3.c            |  4 +++-
 src/lib/tests/sha3_test.c | 37 +++++++++++++++++++++++++++++++++++++
 2 files changed, 40 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/lib/sha3.c b/src/lib/sha3.c
index f80cc4bd..2c8a4614 100644
--- a/src/lib/sha3.c
+++ b/src/lib/sha3.c
@@ -268,7 +268,9 @@ void rhash_sha3_update(struct sha3_ctx * ctx,
         size_t block_size = (size_t) ctx->block_size;
         uint8_t * msg     = (uint8_t *) pmsg;
 
-        if (ctx->rest & SHA3_FINALIZED) return;
+        if (ctx->rest & SHA3_FINALIZED)
+                return;
+
         ctx->rest = (unsigned) ((ctx->rest + size) % block_size);
 
         /* fill partial block */
diff --git a/src/lib/tests/sha3_test.c b/src/lib/tests/sha3_test.c
index 8f1bce05..0d0e8d0a 100644
--- a/src/lib/tests/sha3_test.c
+++ b/src/lib/tests/sha3_test.c
@@ -149,6 +149,12 @@ int sha3_test(int     argc,
                 "ijklmnopjklmnopqklmnopqrlmnopqrs"
                 "mnopqrstnopqrstu";
 
+        char * str4_inp2 =
+                " abcdefghbcdefghicdefghijdefghijk"
+                "efghijklfghijklmghijklmnhijklmno"
+                "ijklmnopjklmnopqklmnopqrlmnopqrs"
+                "mnopqrstnopqrstu";
+
         char * str4_224 =
                 "543e6868e1666c1a643630df77367ae5"
                 "a62a85070a51c14cbf665cbc";
@@ -289,6 +295,37 @@ int sha3_test(int     argc,
         rhash_sha3_update(&ctx, str4_inp, strlen(str4_inp));
         rhash_sha3_final(&ctx, res);
 
+        if (check_hash(str4_512, res, SHA3_512_HASH_LEN))
+                return -1;
+
+        /* unaligned 4th input string. */
+        printf("test: %s.\n\n", str4_inp2 + 1);
+
+        rhash_sha3_224_init(&ctx);
+        rhash_sha3_update(&ctx, str4_inp2 + 1, strlen(str4_inp2 + 1));
+        rhash_sha3_final(&ctx, res);
+
+        if (check_hash(str4_224, res, SHA3_224_HASH_LEN))
+                return -1;
+
+        rhash_sha3_256_init(&ctx);
+        rhash_sha3_update(&ctx, str4_inp2 + 1, strlen(str4_inp2 + 1));
+        rhash_sha3_final(&ctx, res);
+
+        if (check_hash(str4_256, res, SHA3_256_HASH_LEN))
+                return -1;
+
+        rhash_sha3_384_init(&ctx);
+        rhash_sha3_update(&ctx, str4_inp2 + 1, strlen(str4_inp2 + 1));
+        rhash_sha3_final(&ctx, res);
+
+        if (check_hash(str4_384, res, SHA3_384_HASH_LEN))
+                return -1;
+
+        rhash_sha3_512_init(&ctx);
+        rhash_sha3_update(&ctx, str4_inp2 + 1, strlen(str4_inp2 + 1));
+        rhash_sha3_final(&ctx, res);
+
         if (check_hash(str4_512, res, SHA3_512_HASH_LEN))
                 return -1;
 
-- 
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