Implement PSS encoding functions

Signed-off-by: Daiki Ueno <dueno@redhat.com>

1 files changed, 65 insertions, 0 deletions

diff --git a/pss.h b/pss.h
new file mode 100644
index 00000000..9733acb1
--- /dev/null
+++ b/pss.h
@@ -0,0 +1,65 @@
+/* pss.h
+
+   PKCS#1 RSA-PSS (RFC-3447).
+
+   Copyright (C) 2017 Daiki Ueno
+
+   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 2 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/.
+*/
+
+#ifndef NETTLE_PSS_H_INCLUDED
+#define NETTLE_PSS_H_INCLUDED
+
+#include "nettle-types.h"
+#include "bignum.h"
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+/* Namespace mangling */
+#define pss_encode_mgf1 nettle_pss_encode_mgf1
+#define pss_verify_mgf1 nettle_pss_verify_mgf1
+
+int
+pss_encode_mgf1(mpz_t m, size_t bits,
+		const struct nettle_hash *hash,
+		size_t salt_length, const uint8_t *salt,
+		const uint8_t *digest);
+
+int
+pss_verify_mgf1(mpz_t m, size_t bits,
+		const struct nettle_hash *hash,
+		size_t salt_length,
+		const uint8_t *digest);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* NETTLE_PSS_H_INCLUDED */