--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hash_filehandle.c	Mon May 31 18:21:40 2004 +0000
@@ -0,0 +1,49 @@
+/* LibTomCrypt, modular cryptographic library -- Tom St Denis
+ *
+ * LibTomCrypt is a library that provides various cryptographic
+ * algorithms in a highly modular and flexible manner.
+ *
+ * The library is free for all purposes without any express
+ * guarantee it works.
+ *
+ * Tom St Denis, [email protected], http://libtomcrypt.org
+ */
+#include "mycrypt.h"
+
+int hash_filehandle(int hash, FILE *in, unsigned char *dst, unsigned long *outlen)
+{
+#ifdef NO_FILE
+    return CRYPT_NOP;
+#else
+    hash_state md;
+    unsigned char buf[512];
+    size_t x;
+    int err;
+
+    _ARGCHK(dst    != NULL);
+    _ARGCHK(outlen != NULL);
+    _ARGCHK(in     != NULL);
+
+    if ((err = hash_is_valid(hash)) != CRYPT_OK) {
+        return err;
+    }
+
+    if (*outlen < hash_descriptor[hash].hashsize) {
+       return CRYPT_BUFFER_OVERFLOW;
+    }
+    *outlen = hash_descriptor[hash].hashsize;
+
+    hash_descriptor[hash].init(&md);
+    do {
+        x = fread(buf, 1, sizeof(buf), in);
+        hash_descriptor[hash].process(&md, buf, x);
+    } while (x == sizeof(buf));
+    hash_descriptor[hash].done(&md, dst);
+
+#ifdef CLEAN_STACK
+    zeromem(buf, sizeof(buf));
+#endif
+    return CRYPT_OK;
+#endif
+}
+