Overview
| Comment: | Updated to support partial decryption of data |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: | a400fc44090cc4efa252a45dda88f6b3e0b8f43d |
| User & Date: | rkeene on 2016-12-09 04:18:12 |
| Other Links: | manifest | tags |
Context
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2016-12-09
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| 15:00 | Updated to latest version of tcc4tcl check-in: 05b1c2cb3a user: rkeene tags: trunk | |
| 04:18 | Updated to support partial decryption of data check-in: a400fc4409 user: rkeene tags: trunk | |
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2016-11-10
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| 21:14 | Updated to use Tcl allocation routines for memory allocating/releasing check-in: 0fb3b3b582 user: rkeene tags: trunk | |
Changes
Modified kitsh/buildsrc/kitsh-0.0/dir2c.tcl from [74a40bc096] to [990f9a7e47].
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}
h &= ((~g) & 0xffffffffLU);
}
return(h);
}
static int cvfs_decrypt(unsigned char *out, const unsigned char *in, unsigned long in_out_length, struct cvfs_key *key) {
unsigned long i;
unsigned char in_ch, out_ch;
int ch_idx;
for (i = 0; i < in_out_length; i++) {
in_ch = in[i];
ch_idx = (in_ch + (i / key->typedata.rotate_subst.rotate_length)) % 256;
out_ch = key->typedata.rotate_subst.subst[ch_idx];
out[i] = out_ch;
}
................................................................................
if {$obsfucate} {
puts "static void ${code_tag}_decryptFile(const char *path, struct cvfs_data *finfo) {"
puts "\tstatic struct cvfs_key key = { [string map [list "\n" " "] [encrypt_key_export $obsfucation_key "c"]] };"
puts "\tunsigned char *new_data, *old_data;"
puts "\tint decrypt_ret, free_old_data;"
puts ""
puts "\tnew_data = (void *) Tcl_Alloc(finfo->size);"
puts "\tdecrypt_ret = cvfs_decrypt(new_data, finfo->data, finfo->size, &key);"
puts "\tif (decrypt_ret != 0) {"
puts "\t\tTcl_Free((void *) new_data);"
puts ""
puts "\t\treturn;"
puts "\t}"
puts ""
puts "\tfree_old_data = finfo->free;"
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}
h &= ((~g) & 0xffffffffLU);
}
return(h);
}
static int cvfs_decrypt(unsigned char *out, const unsigned char *in, unsigned long offset, unsigned long in_out_length, struct cvfs_key *key) {
unsigned long i;
unsigned char in_ch, out_ch;
int ch_idx;
for (i = offset; i < in_out_length; i++) {
in_ch = in[i];
ch_idx = (in_ch + (i / key->typedata.rotate_subst.rotate_length)) % 256;
out_ch = key->typedata.rotate_subst.subst[ch_idx];
out[i] = out_ch;
}
................................................................................
if {$obsfucate} {
puts "static void ${code_tag}_decryptFile(const char *path, struct cvfs_data *finfo) {"
puts "\tstatic struct cvfs_key key = { [string map [list "\n" " "] [encrypt_key_export $obsfucation_key "c"]] };"
puts "\tunsigned char *new_data, *old_data;"
puts "\tint decrypt_ret, free_old_data;"
puts ""
puts "\tnew_data = (void *) Tcl_Alloc(finfo->size);"
puts "\tdecrypt_ret = cvfs_decrypt(new_data, finfo->data, 0, finfo->size, &key);"
puts "\tif (decrypt_ret != 0) {"
puts "\t\tTcl_Free((void *) new_data);"
puts ""
puts "\t\treturn;"
puts "\t}"
puts ""
puts "\tfree_old_data = finfo->free;"
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