FreeCalypso > hg > fc-pcsc-tools

annotate libutil/revnibbles.c @ 186:c925f7808285

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
doc/GrcardSIM2-security-model article written
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 06 Mar 2021 20:59:23 +0000
parents 2557012666ea
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
7
4360a7906f34 reversed nibbles parsing functions factored out into libcommon
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
4360a7906f34 reversed nibbles parsing functions factored out into libcommon
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 * This module implements some reversed-nibbles parsing functions.
4360a7906f34 reversed nibbles parsing functions factored out into libcommon
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 */
4360a7906f34 reversed nibbles parsing functions factored out into libcommon
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4
4360a7906f34 reversed nibbles parsing functions factored out into libcommon
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 #include <sys/types.h>
4360a7906f34 reversed nibbles parsing functions factored out into libcommon
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6
4360a7906f34 reversed nibbles parsing functions factored out into libcommon
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 decode_reversed_nibbles(bytes, nbytes, dest)
4360a7906f34 reversed nibbles parsing functions factored out into libcommon
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 u_char *bytes;
4360a7906f34 reversed nibbles parsing functions factored out into libcommon
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 unsigned nbytes;
4360a7906f34 reversed nibbles parsing functions factored out into libcommon
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 char *dest;
4360a7906f34 reversed nibbles parsing functions factored out into libcommon
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 {
4360a7906f34 reversed nibbles parsing functions factored out into libcommon
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 u_char *sp;
4360a7906f34 reversed nibbles parsing functions factored out into libcommon
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 char *dp;
4360a7906f34 reversed nibbles parsing functions factored out into libcommon
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 unsigned n, c;
4360a7906f34 reversed nibbles parsing functions factored out into libcommon
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15
4360a7906f34 reversed nibbles parsing functions factored out into libcommon
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 sp = bytes;
4360a7906f34 reversed nibbles parsing functions factored out into libcommon
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 dp = dest;
4360a7906f34 reversed nibbles parsing functions factored out into libcommon
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 for (n = 0; n < nbytes; n++) {
4360a7906f34 reversed nibbles parsing functions factored out into libcommon
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 c = *sp & 0xF;
4360a7906f34 reversed nibbles parsing functions factored out into libcommon
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 *dp++ = encode_hex_digit(c);
4360a7906f34 reversed nibbles parsing functions factored out into libcommon
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 c = *sp >> 4;
4360a7906f34 reversed nibbles parsing functions factored out into libcommon
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 *dp++ = encode_hex_digit(c);
4360a7906f34 reversed nibbles parsing functions factored out into libcommon
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 sp++;
4360a7906f34 reversed nibbles parsing functions factored out into libcommon
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 }
4360a7906f34 reversed nibbles parsing functions factored out into libcommon
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 }
159
2557012666ea libutil: pack_reversed_nibbles() moved to revnibbles.c
Mychaela Falconia <falcon@freecalypso.org>
parents: 158
diff changeset
26
2557012666ea libutil: pack_reversed_nibbles() moved to revnibbles.c
Mychaela Falconia <falcon@freecalypso.org>
parents: 158
diff changeset
27 pack_reversed_nibbles(nibbles, bytes, nbytes)
2557012666ea libutil: pack_reversed_nibbles() moved to revnibbles.c
Mychaela Falconia <falcon@freecalypso.org>
parents: 158
diff changeset
28 u_char *nibbles, *bytes;
2557012666ea libutil: pack_reversed_nibbles() moved to revnibbles.c
Mychaela Falconia <falcon@freecalypso.org>
parents: 158
diff changeset
29 unsigned nbytes;
2557012666ea libutil: pack_reversed_nibbles() moved to revnibbles.c
Mychaela Falconia <falcon@freecalypso.org>
parents: 158
diff changeset
30 {
2557012666ea libutil: pack_reversed_nibbles() moved to revnibbles.c
Mychaela Falconia <falcon@freecalypso.org>
parents: 158
diff changeset
31 u_char *sp, *dp;
2557012666ea libutil: pack_reversed_nibbles() moved to revnibbles.c
Mychaela Falconia <falcon@freecalypso.org>
parents: 158
diff changeset
32 unsigned n;
2557012666ea libutil: pack_reversed_nibbles() moved to revnibbles.c
Mychaela Falconia <falcon@freecalypso.org>
parents: 158
diff changeset
33
2557012666ea libutil: pack_reversed_nibbles() moved to revnibbles.c
Mychaela Falconia <falcon@freecalypso.org>
parents: 158
diff changeset
34 sp = nibbles;
2557012666ea libutil: pack_reversed_nibbles() moved to revnibbles.c
Mychaela Falconia <falcon@freecalypso.org>
parents: 158
diff changeset
35 dp = bytes;
2557012666ea libutil: pack_reversed_nibbles() moved to revnibbles.c
Mychaela Falconia <falcon@freecalypso.org>
parents: 158
diff changeset
36 for (n = 0; n < nbytes; n++) {
2557012666ea libutil: pack_reversed_nibbles() moved to revnibbles.c
Mychaela Falconia <falcon@freecalypso.org>
parents: 158
diff changeset
37 *dp++ = sp[0] | (sp[1] << 4);
2557012666ea libutil: pack_reversed_nibbles() moved to revnibbles.c
Mychaela Falconia <falcon@freecalypso.org>
parents: 158
diff changeset
38 sp += 2;
2557012666ea libutil: pack_reversed_nibbles() moved to revnibbles.c
Mychaela Falconia <falcon@freecalypso.org>
parents: 158
diff changeset
39 }
2557012666ea libutil: pack_reversed_nibbles() moved to revnibbles.c
Mychaela Falconia <falcon@freecalypso.org>
parents: 158
diff changeset
40 }