Providers: move all digests

From providers/{common,default,legacy}/ to providers/implementations/
However, providers/common/digests/digest_common.c stays where it is,
because it's support code rather than an implementation.

To better support all kinds of implementations with common code, we
add the library providers/libcommon.a.  Code that ends up in this
library must be FIPS agnostic.

While we're moving things around, though, we move digestscommon.h
from providers/common/include/internal to providers/common/include/prov,
thereby starting on a provider specific include structure, which
follows the line of thoughts of the recent header file reorganization.
We modify the affected '#include "internal/something.h"' to
'#include "prov/something.h"'.

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/10088)

crypto/blake2/m_blake2b.c

@@ -12,7 +12,7 @@
 # include <stddef.h>
 # include <openssl/obj_mac.h>
 # include "crypto/evp.h"
-# include "internal/blake2.h"
+# include "prov/blake2.h"
 
 static int init(EVP_MD_CTX *ctx)
 {

crypto/blake2/m_blake2s.c

@@ -12,7 +12,7 @@
 # include <stddef.h>
 # include <openssl/obj_mac.h>
 # include "crypto/evp.h"
-# include "internal/blake2.h"
+# include "prov/blake2.h"
 
 static int init(EVP_MD_CTX *ctx)
 {

crypto/evp/legacy_md5_sha1.c

@@ -9,7 +9,7 @@
 
 #include <openssl/opensslconf.h>
 
-#include "internal/md5_sha1.h"   /* diverse MD5_SHA1 macros */
+#include "prov/md5_sha1.h"   /* diverse MD5_SHA1 macros */
 
 #ifndef OPENSSL_NO_MD5
 

crypto/md5/md5_sha1.c

@@ -7,7 +7,7 @@
  * https://www.openssl.org/source/license.html
  */
 #include <string.h>
-#include "internal/md5_sha1.h"
+#include "prov/md5_sha1.h"
 #include <openssl/evp.h>
 
 int md5_sha1_init(MD5_SHA1_CTX *mctx)

providers/build.info

@@ -46,8 +46,8 @@ $LIBFIPS=libfips.a
 $COMMON_INCLUDES=../crypto ../include common/include
 
 INCLUDE[$LIBCOMMON]=$COMMON_INCLUDES
-INCLUDE[$LIBIMPLEMENTATIONS]=.. $COMMON_INCLUDES default/include
-INCLUDE[$LIBLEGACY]=$COMMON_INCLUDES
+INCLUDE[$LIBIMPLEMENTATIONS]=.. $COMMON_INCLUDES implementations/include
+INCLUDE[$LIBLEGACY]=$COMMON_INCLUDES implementations/include
 INCLUDE[$LIBNONFIPS]=$COMMON_INCLUDES
 INCLUDE[$LIBFIPS]=.. $COMMON_INCLUDES
 DEFINE[$LIBFIPS]=FIPS_MODE
@@ -82,6 +82,8 @@ LIBS{noinst}=$LIBNONFIPS $LIBIMPLEMENTATIONS
 # with DEPEND.
 $DEFAULTGOAL=../libcrypto
 SOURCE[$DEFAULTGOAL]=$LIBIMPLEMENTATIONS $LIBNONFIPS
+# Some legacy implementations depend on provider header files
+INCLUDE[../libcrypto]=implementations/include
 
 LIBS=$DEFAULTGOAL
 

providers/common/digests/build.info

@@ -1,7 +1,2 @@
 # This source is common for all digests in all our providers.
 SOURCE[../../libcommon.a]=digest_common.c
-
-# These are our implementations
-$GOAL=../../libimplementations.a
-
-SOURCE[$GOAL]=sha2_prov.c sha3_prov.c

providers/common/digests/digest_common.c

@@ -8,7 +8,7 @@
  */
 
 #include "openssl/err.h"
-#include "internal/digestcommon.h"
+#include "prov/digestcommon.h"
 #include "internal/providercommonerr.h"
 
 int digest_default_get_params(OSSL_PARAM params[], size_t blksz, size_t paramsz,

providers/default/build.info

@@ -1,4 +1,4 @@
-SUBDIRS=digests ciphers
+SUBDIRS=ciphers
 $GOAL=../../libcrypto
 SOURCE[$GOAL]=defltprov.c
 INCLUDE[$GOAL]=include

providers/default/digests/build.info

@@ -1,16 +0,0 @@
-$GOAL=../../libimplementations.a
-
-IF[{- !$disabled{blake2} -}]
-  SOURCE[$GOAL]=\
-          blake2_prov.c blake2b_prov.c blake2s_prov.c
-ENDIF
-
-IF[{- !$disabled{sm3} -}]
-  SOURCE[$GOAL]=\
-          sm3_prov.c
-ENDIF
-
-IF[{- !$disabled{md5} -}]
-  SOURCE[$GOAL]=\
-          md5_prov.c md5_sha1_prov.c
-ENDIF

providers/implementations/build.info

@@ -1 +1 @@
-SUBDIRS=macs kdfs exchange keymgmt signature
+SUBDIRS=digests macs kdfs exchange keymgmt signature

providers/default/digests/blake2_prov.c → providers/implementations/digests/blake2_prov.c

@@ -8,8 +8,8 @@
  */
 
 #include <openssl/crypto.h>
-#include "internal/blake2.h"
-#include "internal/digestcommon.h"
+#include "prov/blake2.h"
+#include "prov/digestcommon.h"
 #include "internal/provider_algs.h"
 
 OSSL_OP_digest_init_fn blake2s256_init;

providers/default/digests/blake2b_prov.c → providers/implementations/digests/blake2b_prov.c

@@ -18,7 +18,7 @@
 #include <string.h>
 #include <openssl/crypto.h>
 #include "blake2_impl.h"
-#include "internal/blake2.h"
+#include "prov/blake2.h"
 
 static const uint64_t blake2b_IV[8] =
 {

providers/default/digests/blake2s_prov.c → providers/implementations/digests/blake2s_prov.c

@@ -18,7 +18,7 @@
 #include <string.h>
 #include <openssl/crypto.h>
 #include "blake2_impl.h"
-#include "internal/blake2.h"
+#include "prov/blake2.h"
 
 static const uint32_t blake2s_IV[8] =
 {

providers/implementations/digests/build.info

@@ -0,0 +1,52 @@
+# We make separate GOAL variables for each algorithm, to make it easy to
+# switch each to the Legacy provider when needed.
+
+$SHA1_GOAL=../../libimplementations.a
+$SHA2_GOAL=../../libimplementations.a
+$SHA3_GOAL=../../libimplementations.a
+$BLAKE2_GOAL=../../libimplementations.a
+$SM3_GOAL=../../libimplementations.a
+$MD5_GOAL=../../libimplementations.a
+
+$MD2_GOAL=../../liblegacy.a
+$MD4_GOAL=../../liblegacy.a
+$MDC2_GOAL=../../liblegacy.a
+$WHIRLPOOL_GOAL=../../liblegacy.a
+$RIPEMD_GOAL=../../liblegacy.a
+
+SOURCE[$SHA2_GOAL]=sha2_prov.c
+SOURCE[$SHA3_GOAL]=sha3_prov.c
+
+$GOAL=../../libimplementations.a
+
+IF[{- !$disabled{blake2} -}]
+  SOURCE[$BLAKE2_GOAL]=blake2_prov.c blake2b_prov.c blake2s_prov.c
+ENDIF
+
+IF[{- !$disabled{sm3} -}]
+  SOURCE[$SM3_GOAL]=sm3_prov.c
+ENDIF
+
+IF[{- !$disabled{md5} -}]
+  SOURCE[$MD5_GOAL]=md5_prov.c md5_sha1_prov.c
+ENDIF
+
+IF[{- !$disabled{md2} -}]
+  SOURCE[$MD2_GOAL]=md2_prov.c
+ENDIF
+
+IF[{- !$disabled{md4} -}]
+  SOURCE[$MD4_GOAL]=md4_prov.c
+ENDIF
+
+IF[{- !$disabled{mdc2} -}]
+  SOURCE[$MDC2_GOAL]=mdc2_prov.c
+ENDIF
+
+IF[{- !$disabled{whirlpool} -}]
+  SOURCE[$WHIRLPOOL_GOAL]=wp_prov.c
+ENDIF
+
+IF[{- !$disabled{rmd160} -}]
+  SOURCE[$RIPEMD_GOAL]=ripemd_prov.c
+ENDIF

providers/legacy/digests/md2_prov.c → providers/implementations/digests/md2_prov.c

@@ -9,7 +9,7 @@
 
 #include <openssl/crypto.h>
 #include <openssl/md2.h>
-#include "internal/digestcommon.h"
+#include "prov/digestcommon.h"
 #include "internal/provider_algs.h"
 
 /* md2_functions */

providers/legacy/digests/md4_prov.c → providers/implementations/digests/md4_prov.c

@@ -9,7 +9,7 @@
 
 #include <openssl/crypto.h>
 #include <openssl/md4.h>
-#include "internal/digestcommon.h"
+#include "prov/digestcommon.h"
 #include "internal/provider_algs.h"
 
 /* md4_functions */

providers/default/digests/md5_prov.c → providers/implementations/digests/md5_prov.c

@@ -9,7 +9,7 @@
 
 #include <openssl/crypto.h>
 #include <openssl/md5.h>
-#include "internal/digestcommon.h"
+#include "prov/digestcommon.h"
 #include "internal/provider_algs.h"
 
 /* md5_functions */

providers/default/digests/md5_sha1_prov.c → providers/implementations/digests/md5_sha1_prov.c

@@ -12,8 +12,8 @@
 #include <openssl/evp.h>
 #include <openssl/params.h>
 #include <openssl/core_names.h>
-#include "internal/md5_sha1.h"
-#include "internal/digestcommon.h"
+#include "prov/md5_sha1.h"
+#include "prov/digestcommon.h"
 #include "internal/provider_algs.h"
 
 static OSSL_OP_digest_set_ctx_params_fn md5_sha1_set_ctx_params;

providers/legacy/digests/mdc2_prov.c → providers/implementations/digests/mdc2_prov.c

@@ -12,7 +12,7 @@
 #include <openssl/mdc2.h>
 #include <openssl/core_names.h>
 #include <openssl/err.h>
-#include "internal/digestcommon.h"
+#include "prov/digestcommon.h"
 #include "internal/provider_algs.h"
 #include "internal/providercommonerr.h"
 

providers/legacy/digests/ripemd_prov.c → providers/implementations/digests/ripemd_prov.c

@@ -9,7 +9,7 @@
 
 #include <openssl/crypto.h>
 #include <openssl/ripemd.h>
-#include "internal/digestcommon.h"
+#include "prov/digestcommon.h"
 #include "internal/provider_algs.h"
 
 /* ripemd160_functions */

providers/common/digests/sha2_prov.c → providers/implementations/digests/sha2_prov.c

@@ -14,7 +14,7 @@
 #include <openssl/evp.h>
 #include <openssl/params.h>
 #include <openssl/core_names.h>
-#include "internal/digestcommon.h"
+#include "prov/digestcommon.h"
 #include "internal/provider_algs.h"
 #include "crypto/sha.h"
 

providers/common/digests/sha3_prov.c → providers/implementations/digests/sha3_prov.c

@@ -14,7 +14,7 @@
 #include <openssl/params.h>
 #include <openssl/err.h>
 #include "internal/sha3.h"
-#include "internal/digestcommon.h"
+#include "prov/digestcommon.h"
 #include "internal/provider_algs.h"
 #include "internal/providercommonerr.h"
 

providers/default/digests/sm3_prov.c → providers/implementations/digests/sm3_prov.c

@@ -9,7 +9,7 @@
 
 #include <openssl/crypto.h>
 #include "internal/sm3.h"
-#include "internal/digestcommon.h"
+#include "prov/digestcommon.h"
 #include "internal/provider_algs.h"
 
 /* sm3_functions */

providers/legacy/digests/wp_prov.c → providers/implementations/digests/wp_prov.c

@@ -9,7 +9,7 @@
 
 #include <openssl/crypto.h>
 #include <openssl/whrlpool.h>
-#include "internal/digestcommon.h"
+#include "prov/digestcommon.h"
 #include "internal/provider_algs.h"
 
 /* wp_functions */

providers/implementations/macs/blake2_mac_impl.c

@@ -11,7 +11,7 @@
 #include <openssl/core_names.h>
 #include <openssl/params.h>
 
-#include "internal/blake2.h"
+#include "prov/blake2.h"
 #include "internal/cryptlib.h"
 #include "internal/providercommonerr.h"
 #include "internal/provider_algs.h"

providers/legacy/build.info

@@ -1,4 +1,3 @@
-SUBDIRS=digests
 IF[{- $disabled{module} -}]
   $GOAL=../../libcrypto
 ELSE

providers/legacy/digests/build.info

@@ -1,21 +0,0 @@
-$GOAL=../../liblegacy.a
-
-IF[{- !$disabled{md2} -}]
-  SOURCE[$GOAL]=md2_prov.c
-ENDIF
-
-IF[{- !$disabled{md4} -}]
-  SOURCE[$GOAL]=md4_prov.c
-ENDIF
-
-IF[{- !$disabled{mdc2} -}]
-  SOURCE[$GOAL]=mdc2_prov.c
-ENDIF
-
-IF[{- !$disabled{whirlpool} -}]
-  SOURCE[$GOAL]=wp_prov.c
-ENDIF
-
-IF[{- !$disabled{rmd160} -}]
-  SOURCE[$GOAL]=ripemd_prov.c
-ENDIF