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-rw-r--r--shared-bindings/aesio/aes.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/shared-bindings/aesio/aes.c b/shared-bindings/aesio/aes.c
index a8f92e251..d92865b8a 100644
--- a/shared-bindings/aesio/aes.c
+++ b/shared-bindings/aesio/aes.c
@@ -173,7 +173,7 @@ STATIC mp_obj_t aesio_aes_encrypt_into(mp_obj_t aesio_obj, mp_obj_t src,
mp_buffer_info_t srcbufinfo, destbufinfo;
mp_get_buffer_raise(src, &srcbufinfo, MP_BUFFER_READ);
- mp_get_buffer_raise(dest, &destbufinfo, MP_BUFFER_READ);
+ mp_get_buffer_raise(dest, &destbufinfo, MP_BUFFER_WRITE);
validate_length(aes, srcbufinfo.len, destbufinfo.len);
memcpy(destbufinfo.buf, srcbufinfo.buf, srcbufinfo.len);
@@ -203,7 +203,7 @@ STATIC mp_obj_t aesio_aes_decrypt_into(mp_obj_t aesio_obj, mp_obj_t src,
mp_buffer_info_t srcbufinfo, destbufinfo;
mp_get_buffer_raise(src, &srcbufinfo, MP_BUFFER_READ);
- mp_get_buffer_raise(dest, &destbufinfo, MP_BUFFER_READ);
+ mp_get_buffer_raise(dest, &destbufinfo, MP_BUFFER_WRITE);
validate_length(aes, srcbufinfo.len, destbufinfo.len);
memcpy(destbufinfo.buf, srcbufinfo.buf, srcbufinfo.len);