* cipher/Makefile.am (EXTRA_libcipher_la_SOURCES): Add sm4.c.
* cipher/cipher.c (cipher_list, cipher_list_algo301): Add
_gcry_cipher_spec_sm4.
* cipher/mac-cmac.c (map_mac_algo_to_cipher): Add cmac SM4.
(_gcry_mac_type_spec_cmac_sm4): Add cmac SM4.
* cipher/mac-internal.h: Declare spec_cmac_sm4.
* cipher/mac.c (mac_list, mac_list_algo201): Add cmac SM4.
* cipher/sm4.c: New.
* configure.ac (available_ciphers): Add sm4.
* doc/gcrypt.texi: Add SM4 document.
* src/cipher.h: Add declarations for SM4 and cmac SM4.
* src/gcrypt.h.in (gcry_cipher_algos): Add algorithm ID for SM4.