new files

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@885 ec53bebd-3082-4978-b11e-865c3cabbd6b

lib/otp/otp_md.c

@@ -0,0 +1,212 @@
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+RCSID("$Id$");
+#endif
+#include "otp_locl.h"
+
+#include "otp_md.h"
+#include <md4.h>
+#include <md5.h>
+#include <sha.h>
+
+/*
+ * Compress len bytes from md into key
+ */
+static void
+compressmd (OtpKey key, unsigned char *md, size_t len)
+{
+  u_char *p = key;
+
+  memset (p, 0, OTPKEYSIZE);
+  while(len) {
+    *p++ ^= *md++;
+    *p++ ^= *md++;
+    *p++ ^= *md++;
+    *p++ ^= *md++;
+    len -= 4;
+    if (p == key + OTPKEYSIZE)
+      p = key;
+  }
+}
+
+static int
+otp_md_init (OtpKey key,
+	     char *pwd,
+	     char *seed,
+	     void (*init)(void *),
+	     void (*update)(void *, u_char *, size_t),
+	     void (*finito)(void *, char *),
+	     void *arg,
+	     char *res,
+	     size_t ressz)
+{
+  char *p;
+  int len;
+  int i;
+
+  len = strlen(pwd) + strlen(seed);
+  p = malloc (len + 1);
+  if (p == NULL)
+    return -1;
+  strcpy (p, seed);
+  strcat (p, pwd);
+  (*init)(arg);
+  (*update)(arg, p, len);
+  (*finito)(arg, res);
+  free (p);
+  compressmd (key, res, ressz);
+  return 0;
+}
+
+static int
+otp_md_next (OtpKey key,
+	     void (*init)(void *),
+	     void (*update)(void *, u_char *, size_t),
+	     void (*finito)(void *, char *),
+	     void *arg,
+	     char *res,
+	     size_t ressz)
+{
+  (*init)(arg);
+  (*update)(arg, key, OTPKEYSIZE);
+  (*finito)(arg, res);
+  compressmd (key, res, ressz);
+  return 0;
+}
+
+static int
+otp_md_hash (char *data,
+	     size_t len,
+	     void (*init)(void *),
+	     void (*update)(void *, u_char *, size_t),
+	     void (*finito)(void *, char *),
+	     void *arg,
+	     char *res,
+	     size_t ressz)
+{
+  (*init)(arg);
+  (*update)(arg, data, len);
+  (*finito)(arg, res);
+  return 0;
+}
+
+int
+otp_md4_init (OtpKey key, char *pwd, char *seed)
+{
+  unsigned char res[16];
+  struct md4 md4;
+
+  return otp_md_init (key, pwd, seed,
+		      (void (*)(void *))md4_init,
+		      (void (*)(void *, u_char *, size_t))md4_update, 
+		      (void (*)(void *, char *))md4_finito,
+		      &md4, res, sizeof(res));
+}
+
+int
+otp_md4_hash (char *data,
+	      size_t len,
+	      char *res)
+{
+  struct md4 md4;
+
+  return otp_md_hash (data, len,
+		      (void (*)(void *))md4_init,
+		      (void (*)(void *, u_char *, size_t))md4_update, 
+		      (void (*)(void *, char *))md4_finito,
+		      &md4, res, 16);
+}
+
+int
+otp_md4_next (OtpKey key)
+{
+  unsigned char res[16];
+  struct md4 md4;
+
+  return otp_md_next (key, 
+		      (void (*)(void *))md4_init, 
+		      (void (*)(void *, u_char *, size_t))md4_update, 
+		      (void (*)(void *, char *))md4_finito,
+		      &md4, res, sizeof(res));
+}
+
+
+int
+otp_md5_init (OtpKey key, char *pwd, char *seed)
+{
+  unsigned char res[16];
+  struct md5 md5;
+
+  return otp_md_init (key, pwd, seed, 
+		      (void (*)(void *))md5_init, 
+		      (void (*)(void *, u_char *, size_t))md5_update, 
+		      (void (*)(void *, char *))md5_finito,
+		      &md5, res, sizeof(res));
+}
+
+int
+otp_md5_hash (char *data,
+	      size_t len,
+	      char *res)
+{
+  struct md5 md5;
+
+  return otp_md_hash (data, len,
+		      (void (*)(void *))md5_init,
+		      (void (*)(void *, u_char *, size_t))md5_update, 
+		      (void (*)(void *, char *))md5_finito,
+		      &md5, res, 16);
+}
+
+int
+otp_md5_next (OtpKey key)
+{
+  unsigned char res[16];
+  struct md5 md5;
+
+  return otp_md_next (key, 
+		      (void (*)(void *))md5_init, 
+		      (void (*)(void *, u_char *, size_t))md5_update, 
+		      (void (*)(void *, char *))md5_finito,
+		      &md5, res, sizeof(res));
+}
+
+int
+otp_sha_init (OtpKey key, char *pwd, char *seed)
+{
+  unsigned char res[20];
+  struct sha sha;
+
+  return otp_md_init (key, pwd, seed, 
+		      (void (*)(void *))sha_init, 
+		      (void (*)(void *, u_char *, size_t))sha_update, 
+		      (void (*)(void *, char *))sha_finito,
+		      &sha, res, sizeof(res));
+}
+
+int
+otp_sha_hash (char *data,
+	      size_t len,
+	      char *res)
+{
+  struct sha sha;
+
+  return otp_md_hash (data, len,
+		      (void (*)(void *))sha_init,
+		      (void (*)(void *, u_char *, size_t))sha_update, 
+		      (void (*)(void *, char *))sha_finito,
+		      &sha, res, 20);
+}
+
+int
+otp_sha_next (OtpKey key)
+{
+  unsigned char res[20];
+  struct sha sha;
+
+  return otp_md_next (key, 
+		      (void (*)(void *))sha_init, 
+		      (void (*)(void *, u_char *, size_t))sha_update, 
+		      (void (*)(void *, char *))sha_finito,
+		      &sha, res, sizeof(res));
+}