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Added 'Global Platform' PIN encoding 

git-svn-id: https://www.opensc-project.org/svnp/opensc/trunk@1257 c6295689-39f2-0310-b995-f0e70906c6a9
This commit is contained in:
sth 2003-07-14 13:20:49 +00:00
parent cd20622c96
commit 901a2d90e3
2 changed files with 24 additions and 3 deletions
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1
src/libopensc/opensc.h
View File

@ -314,6 +314,7 @@ typedef struct sc_reader sc_reader_t;
#define SC_PIN_ENCODING_ASCII 0
#define SC_PIN_ENCODING_BCD 1
#define SC_PIN_ENCODING_GLP 2 /* Global Platform - Card Specification – v 2.0.1 */
struct sc_pin_cmd_pin {
const char *prompt; /* Prompt to display */

26
src/libopensc/sec.c
View File

@ -207,6 +207,14 @@ int sc_pin_cmd(struct sc_card *card, struct sc_pin_cmd_data *data,
/*
* This function will copy a PIN, convert and pad it as required
*
* Note about the SC_PIN_ENCODING_GLP encoding:
* PIN buffers are allways 16 nibbles (8 bytes) and look like this:
* 0x2 + len + pin_in_BCD + paddingnibbles
* in which the paddingnibble = 0xF
* E.g. if PIN = 12345, then sbuf = {0x24, 0x12, 0x34, 0x5F, 0xFF, 0xFF, 0xFF, 0xFF}
* E.g. if PIN = 123456789012, then sbuf = {0x2C, 0x12, 0x34, 0x56, 0x78, 0x90, 0x12, 0xFF}
* Reference: Global Platform - Card Specification - version 2.0.1' - April 7, 2000
*/
int sc_build_pin(u8 *buf, size_t buflen, struct sc_pin_cmd_pin *pin, int pad)
{
@ -217,13 +225,21 @@ int sc_build_pin(u8 *buf, size_t buflen, struct sc_pin_cmd_pin *pin, int pad)
if (pin->max_length && pin_len > pin->max_length)
return SC_ERROR_INVALID_ARGUMENTS;
if (pin->encoding == SC_PIN_ENCODING_GLP) {
if (pin_len > 12)
return SC_ERROR_INVALID_ARGUMENTS;
buf[0] = 0x20 | pin_len;
buf++;
buflen--;
}
/* PIN given by application, encode if required */
if (pin->encoding == SC_PIN_ENCODING_ASCII) {
if (pin_len > buflen)
return SC_ERROR_BUFFER_TOO_SMALL;
memcpy(buf, pin->data, pin_len);
i = pin_len;
} else if (pin->encoding == SC_PIN_ENCODING_BCD) {
} else if (pin->encoding == SC_PIN_ENCODING_BCD || pin->encoding == SC_PIN_ENCODING_GLP) {
if (pin_len > 2 * buflen)
return SC_ERROR_BUFFER_TOO_SMALL;
for (i = j = 0; j < pin_len; j++) {
@ -240,17 +256,21 @@ int sc_build_pin(u8 *buf, size_t buflen, struct sc_pin_cmd_pin *pin, int pad)
}
/* Pad to maximum PIN length if requested */
if (pad) {
if (pad || pin->encoding == SC_PIN_ENCODING_GLP) {
pad_length = pin->max_length;
if (pin->encoding == SC_PIN_ENCODING_BCD)
pad_length >>= 1;
if (pin->encoding == SC_PIN_ENCODING_GLP)
pad_length = 8;
}
if (pad_length > buflen)
return SC_ERROR_BUFFER_TOO_SMALL;
if (pad_length && i < pad_length) {
memset(buf + i, pin->pad_char, pad_length - i);
memset(buf + i,
pin->encoding == SC_PIN_ENCODING_GLP ? 0xFF : pin->pad_char,
pad_length - i);
i = pad_length;
}
return i;