summaryrefslogtreecommitdiff
path: root/gnulib/lib/des.h
diff options
context:
space:
mode:
Diffstat (limited to 'gnulib/lib/des.h')
m---------gnulib0
-rw-r--r--gnulib/lib/des.h121
2 files changed, 121 insertions, 0 deletions
diff --git a/gnulib b/gnulib
deleted file mode 160000
-Subproject 443bc5ffcf7429e557f4a371b0661abe98ddbc1
diff --git a/gnulib/lib/des.h b/gnulib/lib/des.h
new file mode 100644
index 0000000..516d155
--- /dev/null
+++ b/gnulib/lib/des.h
@@ -0,0 +1,121 @@
+/* des.h --- DES cipher implementation.
+ * Copyright (C) 2005, 2007, 2009-2011 Free Software Foundation, Inc.
+ *
+ * This file 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 2, or (at your
+ * option) any later version.
+ *
+ * This file 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 this file; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ */
+
+/* Adapted for gnulib by Simon Josefsson, based on Libgcrypt. */
+
+#ifndef DES_H
+# define DES_H
+
+#include <stddef.h>
+#include <stdint.h>
+#include <stdbool.h>
+
+/*
+ * Encryption/Decryption context of DES
+ */
+typedef struct
+{
+ uint32_t encrypt_subkeys[32];
+ uint32_t decrypt_subkeys[32];
+} gl_des_ctx;
+
+/*
+ * Encryption/Decryption context of Triple-DES
+ */
+typedef struct
+{
+ uint32_t encrypt_subkeys[96];
+ uint32_t decrypt_subkeys[96];
+} gl_3des_ctx;
+
+/* Check whether the 8 byte key is weak. Does not check the parity
+ * bits of the key but simple ignore them. */
+extern bool
+gl_des_is_weak_key (const char * key);
+
+/*
+ * DES
+ * ---
+ */
+
+/* Fill a DES context CTX with subkeys calculated from 64bit KEY.
+ * Does not check parity bits, but simply ignore them. Does not check
+ * for weak keys. */
+extern void
+gl_des_setkey (gl_des_ctx *ctx, const char * key);
+
+/* Fill a DES context CTX with subkeys calculated from 64bit KEY, with
+ * weak key checking. Does not check parity bits, but simply ignore
+ * them. */
+extern bool
+gl_des_makekey (gl_des_ctx *ctx, const char * key, size_t keylen);
+
+/* Electronic Codebook Mode DES encryption/decryption of data
+ * according to 'mode'. */
+extern void
+gl_des_ecb_crypt (gl_des_ctx *ctx, const char * from, char * to, int mode);
+
+#define gl_des_ecb_encrypt(ctx, from, to) gl_des_ecb_crypt(ctx, from, to, 0)
+#define gl_des_ecb_decrypt(ctx, from, to) gl_des_ecb_crypt(ctx, from, to, 1)
+
+/* Triple-DES
+ * ----------
+ */
+
+/* Fill a Triple-DES context CTX with subkeys calculated from two
+ * 64bit keys in KEY1 and KEY2. Does not check the parity bits of the
+ * keys, but simply ignore them. Does not check for weak keys. */
+extern void
+gl_3des_set2keys (gl_3des_ctx *ctx,
+ const char * key1,
+ const char * key2);
+
+/*
+ * Fill a Triple-DES context CTX with subkeys calculated from three
+ * 64bit keys in KEY1, KEY2 and KEY3. Does not check the parity bits
+ * of the keys, but simply ignore them. Does not check for weak
+ * keys. */
+extern void
+gl_3des_set3keys (gl_3des_ctx *ctx,
+ const char * key1,
+ const char * key2,
+ const char * key3);
+
+/* Fill a Triple-DES context CTX with subkeys calculated from three
+ * concatenated 64bit keys in KEY, with weak key checking. Does not
+ * check the parity bits of the keys, but simply ignore them. */
+extern bool
+gl_3des_makekey (gl_3des_ctx *ctx,
+ const char * key,
+ size_t keylen);
+
+/* Electronic Codebook Mode Triple-DES encryption/decryption of data
+ * according to 'mode'. Sometimes this mode is named 'EDE' mode
+ * (Encryption-Decryption-Encryption). */
+extern void
+gl_3des_ecb_crypt (gl_3des_ctx *ctx,
+ const char * from,
+ char * to,
+ int mode);
+
+#define gl_3des_ecb_encrypt(ctx, from, to) gl_3des_ecb_crypt(ctx,from,to,0)
+#define gl_3des_ecb_decrypt(ctx, from, to) gl_3des_ecb_crypt(ctx,from,to,1)
+
+#endif /* DES_H */