--- /dev/null
+/* -*-c-*-
+ *
+ * Generic hash function interface
+ *
+ * (c) 1999 Straylight/Edgeware
+ */
+
+/*----- Licensing notice --------------------------------------------------*
+ *
+ * This file is part of Catacomb.
+ *
+ * Catacomb is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Library General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * Catacomb 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 Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with Catacomb; if not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ * MA 02111-1307, USA.
+ */
+
+#ifndef CATACOMB_GHASH_H
+#define CATACOMB_GHASH_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/*----- Header files ------------------------------------------------------*/
+
+#include <stddef.h>
+
+#include <mLib/bits.h>
+
+/*----- Generic hash function interface -----------------------------------*/
+
+typedef struct ghash {
+ const struct ghash_ops *ops; /* Pointer to hash operations */
+} ghash;
+
+typedef struct ghash_ops {
+ const struct gchash *c; /* Pointer to hash class */
+ void (*hash)(ghash */*h*/, const void */*p*/, size_t /*sz*/); /* Hash */
+ octet *(*done)(ghash */*h*/, void */*buf*/); /* Write result */
+ void (*destroy)(ghash */*h*/); /* Destroy hash block */
+ ghash *(*copy)(ghash */*h*/); /* Make a copy of the hash context */
+} ghash_ops;
+
+#define GH_INIT(ch) (ch)->init()
+#define GH_CLASS(h) (h)->ops->c
+#define GH_HASH(h, p, sz) (h)->ops->hash((h), (p), (sz))
+#define GH_DONE(h, buf) (h)->ops->done((h), (buf))
+#define GH_DESTROY(h) (h)->ops->destroy((h))
+#define GH_COPY(h) (h)->ops->copy((h))
+
+#define GH_HASHU_(h, n, W) do { \
+ TY_U##W n_ = (n); octet b_[SZ_##W]; \
+ STORE##W(b_, n_); GH_HASH((h), b_, SZ_##W); \
+} while (0)
+#define GH_HASHU8(h, n) GH_HASHU_((h), (n), 8)
+#define GH_HASHU16(h, n) GH_HASHU_((h), (n), 16)
+#define GH_HASHU16_B(h, n) GH_HASHU_((h), (n), 16_B)
+#define GH_HASHU16_L(h, n) GH_HASHU_((h), (n), 16_L)
+#define GH_HASHU24(h, n) GH_HASHU_((h), (n), 24)
+#define GH_HASHU24_B(h, n) GH_HASHU_((h), (n), 24_B)
+#define GH_HASHU24_L(h, n) GH_HASHU_((h), (n), 24_L)
+#define GH_HASHU32(h, n) GH_HASHU_((h), (n), 32)
+#define GH_HASHU32_B(h, n) GH_HASHU_((h), (n), 32_B)
+#define GH_HASHU32_L(h, n) GH_HASHU_((h), (n), 32_L)
+#ifdef HAVE_UINT64
+# define GH_HASHU64(h, n) GH_HASHU_((h), (n), 64)
+# define GH_HASHU64_B(h, n) GH_HASHU_((h), (n), 64_B)
+# define GH_HASHU64_L(h, n) GH_HASHU_((h), (n), 64_L)
+#endif
+
+#define GH_HASHBUF_(h, p, sz, W) do { \
+ size_t sz_ = (sz); assert(sz_ <= MASK##W); \
+ GH_HASHU_(h, sz_, W); GH_HASH(h, (p), sz_); \
+} while (0)
+#define GH_HASHBUF8(h, p, sz) GH_HASHBUF_((h), (p), (sz), 8)
+#define GH_HASHBUF16(h, p, sz) GH_HASHBUF_((h), (p), (sz), 16)
+#define GH_HASHBUF16_L(h, p, sz) GH_HASHBUF_((h), (p), (sz), 16_L)
+#define GH_HASHBUF16_B(h, p, sz) GH_HASHBUF_((h), (p), (sz), 16_B)
+#define GH_HASHBUF24(h, p, sz) GH_HASHBUF_((h), (p), (sz), 24)
+#define GH_HASHBUF24_L(h, p, sz) GH_HASHBUF_((h), (p), (sz), 24_L)
+#define GH_HASHBUF24_B(h, p, sz) GH_HASHBUF_((h), (p), (sz), 24_B)
+#define GH_HASHBUF32(h, p, sz) GH_HASHBUF_((h), (p), (sz), 32)
+#define GH_HASHBUF32_L(h, p, sz) GH_HASHBUF_((h), (p), (sz), 32_L)
+#define GH_HASHBUF32_B(h, p, sz) GH_HASHBUF_((h), (p), (sz), 32_B)
+#ifdef HAVE_UINT64
+# define GH_HASHBUF64(h, p, sz) GH_HASHBUF_((h), (p), (sz), 64)
+# define GH_HASHBUF64_L(h, p, sz) GH_HASHBUF_((h), (p), (sz), 64_L)
+# define GH_HASHBUF64_B(h, p, sz) GH_HASHBUF_((h), (p), (sz), 64_B)
+#endif
+
+#define GH_HASHSTR_(h, p, W) do { \
+ const char *p_ = (p); GH_HASHBUF_((h), p_, strlen(p_), W); \
+} while (0)
+#define GH_HASHSTR8(h, p) GH_HASHSTR_((h), (p), 8)
+#define GH_HASHSTR16(h, p) GH_HASHSTR_((h), (p), 16)
+#define GH_HASHSTR16_L(h, p) GH_HASHSTR_((h), (p), 16_L)
+#define GH_HASHSTR16_B(h, p) GH_HASHSTR_((h), (p), 16_B)
+#define GH_HASHSTR24(h, p) GH_HASHSTR_((h), (p), 24)
+#define GH_HASHSTR24_L(h, p) GH_HASHSTR_((h), (p), 24_L)
+#define GH_HASHSTR24_B(h, p) GH_HASHSTR_((h), (p), 24_B)
+#define GH_HASHSTR32(h, p) GH_HASHSTR_((h), (p), 32)
+#define GH_HASHSTR32_L(h, p) GH_HASHSTR_((h), (p), 32_L)
+#define GH_HASHSTR32_B(h, p) GH_HASHSTR_((h), (p), 32_B)
+#ifdef HAVE_UINT64
+# define GH_HASHSTR64(h, p) GH_HASHSTR_((h), (p), 64)
+# define GH_HASHSTR64_L(h, p) GH_HASHSTR_((h), (p), 64_L)
+# define GH_HASHSTR64_B(h, p) GH_HASHSTR_((h), (p), 64_B)
+#endif
+
+#define GH_HASHSTRZ(h, p) do { \
+ const char *p_ = (p); GH_HASH((h), p_, strlen(p_) + 1); \
+} while (0)
+#define GH_HASHSTR(h, p) do { \
+ const char *p_ = (p); GH_HASH((h), p_, strlen(p_)); \
+} while (0)
+
+typedef struct gchash {
+ const char *name; /* Name of the hash function */
+ size_t hashsz; /* Size of output hash */
+ ghash *(*init)(void); /* Create a new hash instance */
+ size_t bufsz; /* Buffer size, or zero */
+} gchash;
+
+/*----- Tables ------------------------------------------------------------*/
+
+extern const gchash *const ghashtab[];
+
+/* --- @ghash_byname@ --- *
+ *
+ * Arguments: @const char *p@ = pointer to name string
+ *
+ * Returns: The named cipher class, or null.
+ */
+
+extern const gchash *ghash_byname(const char */*p*/);
+
+/*----- That's all, folks -------------------------------------------------*/
+
+#ifdef __cplusplus
+ }
+#endif
+
+#endif
projects / u / mdw / catacomb / blobdiff