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https://github.com/python/cpython/pull/25060
https://github.com/BLAKE2/libb2/issues/43
From 02c7e77bf98e8082e2200fb0198238ba617aed49 Mon Sep 17 00:00:00 2001
From: Inada Naoki <[email protected]>
Date: Mon, 29 Mar 2021 12:22:07 +0900
Subject: [PATCH] blake2: Fix Coverity scan
---
src/blake2b-ref.c | 2 +-
src/blake2b.c | 2 +-
src/blake2s-ref.c | 2 +-
src/blake2s.c | 2 +-
4 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/src/blake2b-ref.c b/src/blake2b-ref.c
index 699f1a1da1de..e58c43659d9c 100644
--- a/src/blake2b-ref.c
+++ b/src/blake2b-ref.c
@@ -333,7 +333,7 @@ int blake2b_final( blake2b_state *S, uint8_t *out, size_t outlen )
blake2b_increment_counter( S, BLAKE2B_BLOCKBYTES );
blake2b_compress( S, S->buf );
S->buflen -= BLAKE2B_BLOCKBYTES;
- memcpy( S->buf, S->buf + BLAKE2B_BLOCKBYTES, S->buflen );
+ memmove( S->buf, S->buf + BLAKE2B_BLOCKBYTES, S->buflen );
}
blake2b_increment_counter( S, S->buflen );
diff --git a/src/blake2b.c b/src/blake2b.c
index 3d3e46506f2e..c1068e864054 100644
--- a/src/blake2b.c
+++ b/src/blake2b.c
@@ -388,7 +388,7 @@ int blake2b_final( blake2b_state *S, uint8_t *out, size_t outlen )
blake2b_increment_counter( S, BLAKE2B_BLOCKBYTES );
blake2b_compress( S, S->buf );
S->buflen -= BLAKE2B_BLOCKBYTES;
- memcpy( S->buf, S->buf + BLAKE2B_BLOCKBYTES, S->buflen );
+ memmove( S->buf, S->buf + BLAKE2B_BLOCKBYTES, S->buflen );
}
blake2b_increment_counter( S, S->buflen );
diff --git a/src/blake2s-ref.c b/src/blake2s-ref.c
index baf0b58351ae..ab86cc1b34e6 100644
--- a/src/blake2s-ref.c
+++ b/src/blake2s-ref.c
@@ -323,7 +323,7 @@ int blake2s_final( blake2s_state *S, uint8_t *out, size_t outlen )
blake2s_increment_counter( S, BLAKE2S_BLOCKBYTES );
blake2s_compress( S, S->buf );
S->buflen -= BLAKE2S_BLOCKBYTES;
- memcpy( S->buf, S->buf + BLAKE2S_BLOCKBYTES, S->buflen );
+ memmove( S->buf, S->buf + BLAKE2S_BLOCKBYTES, S->buflen );
}
blake2s_increment_counter( S, ( uint32_t )S->buflen );
diff --git a/src/blake2s.c b/src/blake2s.c
index 3a04328ab8a4..47514685b8f3 100644
--- a/src/blake2s.c
+++ b/src/blake2s.c
@@ -363,7 +363,7 @@ int blake2s_final( blake2s_state *S, uint8_t *out, size_t outlen )
blake2s_increment_counter( S, BLAKE2S_BLOCKBYTES );
blake2s_compress( S, S->buf );
S->buflen -= BLAKE2S_BLOCKBYTES;
- memcpy( S->buf, S->buf + BLAKE2S_BLOCKBYTES, S->buflen );
+ memmove( S->buf, S->buf + BLAKE2S_BLOCKBYTES, S->buflen );
}
blake2s_increment_counter( S, ( uint32_t )S->buflen );
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