1 files changed, 77 insertions, 0 deletions
diff --git a/external/nettle-3.3/nettle/rsa-sha256-sign.c b/external/nettle-3.3/nettle/rsa-sha256-sign.c
new file mode 100644
index 0000000..5daffbf
--- /dev/null
+++ b/external/nettle-3.3/nettle/rsa-sha256-sign.c
@@ -0,0 +1,77 @@
+/* rsa-sha256-sign.c
+
+   Signatures using RSA and SHA256.
+
+   Copyright (C) 2001, 2003, 2006 Niels Möller
+
+   This file is part of GNU Nettle.
+
+   GNU Nettle is free software: you can redistribute it and/or
+   modify it under the terms of either:
+
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * 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.
+
+   or both in parallel, as here.
+
+   GNU Nettle 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 copies of the GNU General Public License and
+   the GNU Lesser General Public License along with this program.  If
+   not, see http://www.gnu.org/licenses/.
+*/
+
+#if HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <assert.h>
+
+#include "rsa.h"
+
+#include "bignum.h"
+#include "pkcs1.h"
+
+int
+rsa_sha256_sign(const struct rsa_private_key *key,
+		struct sha256_ctx *hash,
+		mpz_t s)
+{
+  if (pkcs1_rsa_sha256_encode(s, key->size, hash))
+    {
+      rsa_compute_root(key, s, s);
+      return 1;
+    }
+  else
+    {
+      mpz_set_ui(s, 0);
+      return 0;
+    }  
+}
+
+int
+rsa_sha256_sign_digest(const struct rsa_private_key *key,
+		       const uint8_t *digest,
+		       mpz_t s)
+{
+  if (pkcs1_rsa_sha256_encode_digest(s, key->size, digest))
+    {
+      rsa_compute_root(key, s, s);
+      return 1;
+    }
+  else
+    {
+      mpz_set_ui(s, 0);
+      return 0;
+    }  
+}