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-rw-r--r--lib/crypto/aes_ccm_128.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/crypto/aes_ccm_128.c b/lib/crypto/aes_ccm_128.c
index ac8e01f631..94b980337c 100644
--- a/lib/crypto/aes_ccm_128.c
+++ b/lib/crypto/aes_ccm_128.c
@@ -70,7 +70,7 @@ void aes_ccm_128_init(struct aes_ccm_128_context *ctx,
*/
if (a_total >= UINT32_MAX) {
RSSVAL(ctx->B_i, 0, 0xFFFF);
- RSBVAL(ctx->B_i, 2, a_total);
+ RSBVAL(ctx->B_i, 2, (uint64_t)a_total);
ctx->B_i_ofs = 10;
} else if (a_total >= 0xFF00) {
RSSVAL(ctx->B_i, 0, 0xFFFE);