remove sha512 wrapper and use openssl directly

cbits/sha512.c

@@ -1,9 +0,0 @@
-#include <openssl/sha.h>
-#include "sha512.h"
-
-void crypto_hash_sha512 (unsigned char *out,
-                         const unsigned char *in,
-                         unsigned long long inlen)
-{
-  SHA512(in, inlen, out);
-}

cbits/sha512.h

@@ -1,3 +0,0 @@
-void crypto_hash_sha512 (unsigned char *out,
-                         const unsigned char *in,
-                         unsigned long long inlen);

cbits/sntrup761.c

@@ -6,7 +6,7 @@
  * - Christine van Vredendaal
  */
 
-#include "sha512.h"
+#include <openssl/sha.h>
 #include "sntrup761.h"
 #include "sxcrandom.h"
 
@@ -676,7 +676,7 @@ Hash_prefix (unsigned char *out, int b, const unsigned char *in, int inlen)
   x[0] = b;
   for (i = 0; i < inlen; ++i)
     x[i + 1] = in[i];
-  crypto_hash_sha512 (h, x, inlen + 1);
+  SHA512 (x, inlen + 1, h);
   for (i = 0; i < 32; ++i)
     out[i] = h[i];
 }

package.yaml

@@ -20,7 +20,7 @@ category: Chat, Network, Web, System, Cryptography
 extra-source-files:
   - README.md
   - CHANGELOG.md
-  - cbits/sha512.h
+  # - cbits/sha512.h
   - cbits/sntrup761.h
   - cbits/sxcrandom.h
 
@@ -91,11 +91,11 @@ when:
 library:
   source-dirs: src
   c-sources:
-    - cbits/sha512.c
+    # - cbits/sha512.c
     - cbits/sntrup761.c
     - cbits/sxcrandom.c
   include-dirs: cbits
-  extra-libraries: ssl crypto
+  extra-libraries: crypto
 
 executables:
   smp-server:

simplexmq.cabal

@@ -26,7 +26,6 @@ build-type:     Simple
 extra-source-files:
     README.md
     CHANGELOG.md
-    cbits/sha512.h
     cbits/sntrup761.h
     cbits/sxcrandom.h
 
@@ -156,11 +155,10 @@ library
   include-dirs:
       cbits
   c-sources:
-      cbits/sha512.c
       cbits/sntrup761.c
       cbits/sxcrandom.c
   extra-libraries:
-      ssl crypto
+      crypto
   build-depends:
       aeson ==2.2.*
     , ansi-terminal >=0.10 && <0.12