daemon: Support SHA-512 hashes.

Fixes #679.

Note: on x86_64, SHA-512 is considerably faster than SHA-256 (198 MB/s
versus 131 MB/s).

Co-authored-by: Ludovic Courtès <ludo@gnu.org>

1 files changed, 35 insertions, 0 deletions

diff --git a/nix/libutil/sha512.h b/nix/libutil/sha512.h
new file mode 100644
index 0000000000..d2abab4c5f
--- /dev/null
+++ b/nix/libutil/sha512.h
@@ -0,0 +1,35 @@
+/* GNU Guix --- Functional package management for GNU
+   Copyright (C) 2012, 2015 Ludovic Courtès <ludo@gnu.org>
+
+   This file is part of GNU Guix.
+
+   GNU Guix is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or (at
+   your option) any later version.
+
+   GNU Guix is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include <gcrypt-hash.hh>
+
+#define SHA512_CTX guix_hash_context
+
+static inline void
+SHA512_Init (struct SHA512_CTX *ctx)
+{
+  guix_hash_init (ctx, GCRY_MD_SHA512);
+}
+
+#define SHA512_Update guix_hash_update
+
+static inline void
+SHA512_Final (void *resbuf, struct SHA512_CTX *ctx)
+{
+  guix_hash_final (resbuf, ctx, GCRY_MD_SHA512);
+}