Allow specifying the tag after AAD in CCM mode
This change allows to pass the authentication tag after specifying the AAD in CCM mode. This is already true for the other two supported AEAD modes (GCM and OCB) and it seems appropriate to match the behavior. GCM and OCB also support to set the tag at any point before the call to `EVP_*Final`, but this won't work for CCM due to a restriction imposed by section 2.6 of RFC3610: The tag must be set before actually decrypting data. This commit also adds a test case for setting the tag after supplying plaintext length and AAD. Reviewed-by: NPaul Dale <paul.dale@oracle.com> Reviewed-by: NMatt Caswell <matt@openssl.org> (Merged from https://github.com/openssl/openssl/pull/7243) (cherry picked from commit 67c81ec311d696464bdbf4c6d6f8a887a3ddf9f8)
Showing
想要评论请 注册 或 登录