Created SILC Crypto Toolkit git repository.

[crypto.git] / lib / silcutil / silcbase64.c

diff --git a/lib/silcutil/silcbase64.c b/lib/silcutil/silcbase64.c
deleted file mode 100644 (file)
index ba9b2c8..0000000
--- a/lib/silcutil/silcbase64.c
+++ /dev/null
@@ -1,177 +0,0 @@
-/*
-
-  silcbase64.c
-
-  Author: Pekka Riikonen <priikone@silcnet.org>
-
-  Copyright (C) 2007 Pekka Riikonen
-
-  This program 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; version 2 of the License.
-
-  This program 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.
-
-*/
-
-#include "silc.h"
-
-static unsigned char pem_enc[64] =
-"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
-
-/* Encodes data into Base 64 encoding. Returns NULL terminated base 64 encoded
-   data string. */
-
-char *silc_base64_encode(SilcStack stack, unsigned char *data, SilcUInt32 len)
-{
-  int i, j;
-  SilcUInt32 bits, c, char_count;
-  char *pem;
-
-  char_count = 0;
-  bits = 0;
-  j = 0;
-
-  pem = silc_scalloc(stack, ((len * 8 + 5) / 6) + 5, sizeof(*pem));
-  if (!pem)
-    return NULL;
-
-  for (i = 0; i < len; i++) {
-    c = data[i];
-    bits += c;
-    char_count++;
-
-    if (char_count == 3) {
-      pem[j++] = pem_enc[bits  >> 18];
-      pem[j++] = pem_enc[(bits >> 12) & 0x3f];
-      pem[j++] = pem_enc[(bits >> 6)  & 0x3f];
-      pem[j++] = pem_enc[bits & 0x3f];
-      bits = 0;
-      char_count = 0;
-    } else {
-      bits <<= 8;
-    }
-  }
-
-  if (char_count != 0) {
-    bits <<= 16 - (8 * char_count);
-    pem[j++] = pem_enc[bits >> 18];
-    pem[j++] = pem_enc[(bits >> 12) & 0x3f];
-
-    if (char_count == 1) {
-      pem[j++] = '=';
-      pem[j] = '=';
-    } else {
-      pem[j++] = pem_enc[(bits >> 6) & 0x3f];
-      pem[j] = '=';
-    }
-  }
-
-  return pem;
-}
-
-/* Same as above but puts newline ('\n') every 72 characters. */
-
-char *silc_base64_encode_file(SilcStack stack,
-                             unsigned char *data, SilcUInt32 data_len)
-{
-  int i, j;
-  SilcUInt32 len, cols;
-  char *pem, *pem2;
-
-  pem = silc_base64_encode(stack, data, data_len);
-  len = strlen(pem);
-
-  pem2 = silc_scalloc(stack, len + (len / 72) + 1, sizeof(*pem2));
-
-  for (i = 0, j = 0, cols = 1; i < len; i++, cols++) {
-    if (cols == 72) {
-      pem2[i] = '\n';
-      cols = 0;
-      len++;
-      continue;
-    }
-
-    pem2[i] = pem[j++];
-  }
-
-  silc_sfree(stack, pem);
-  return pem2;
-}
-
-/* Decodes Base 64 into data. Returns the decoded data. */
-
-unsigned char *silc_base64_decode(SilcStack stack,
-                                 unsigned char *base64,
-                                 SilcUInt32 base64_len,
-                                 SilcUInt32 *ret_len)
-{
-  int i, j;
-  SilcUInt32 len, c, char_count, bits;
-  unsigned char *data;
-  static char ialpha[256], decoder[256];
-
-  for (i = 64 - 1; i >= 0; i--) {
-    ialpha[pem_enc[i]] = 1;
-    decoder[pem_enc[i]] = i;
-  }
-
-  char_count = 0;
-  bits = 0;
-  j = 0;
-
-  if (!base64_len)
-    len = strlen(base64);
-  else
-    len = base64_len;
-
-  data = silc_scalloc(stack, ((len * 6) / 8), sizeof(*data));
-  if (!data)
-    return NULL;
-
-  for (i = 0; i < len; i++) {
-    c = base64[i];
-
-    if (c == '=')
-      break;
-
-    if (c > 127 || !ialpha[c])
-      continue;
-
-    bits += decoder[c];
-    char_count++;
-
-    if (char_count == 4) {
-      data[j++] = bits >> 16;
-      data[j++] = (bits >> 8) & 0xff;
-      data[j++] = bits & 0xff;
-      bits = 0;
-      char_count = 0;
-    } else {
-      bits <<= 6;
-    }
-  }
-
-  switch (char_count) {
-  case 1:
-    silc_sfree(stack, data);
-    silc_set_errno(SILC_ERR_BAD_ENCODING);
-    return NULL;
-    break;
-  case 2:
-    data[j++] = bits >> 10;
-    break;
-  case 3:
-    data[j++] = bits >> 16;
-    data[j++] = (bits >> 8) & 0xff;
-    break;
-  }
-
-  if (ret_len)
-    *ret_len = j;
-
-  return data;
-}