AuroraMiddleware/libtomcrypt
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add pkcs12_utf8_to_utf16()

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This commit is contained in:
Karel Miko 2018-06-07 21:49:41 +02:00 committed by Steffen Jaeckel
parent b3f483a204
commit a96997dd29
2 changed files with 63 additions and 0 deletions
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3
src/headers/tomcrypt_private.h
View File

@ -309,6 +309,9 @@ int x509_decode_subject_public_key_info(const unsigned char *in, unsigned long i
#ifdef LTC_PKCS_12
int pkcs12_utf8_to_utf16(const unsigned char *in, unsigned long inlen,
unsigned char *out, unsigned long *outlen);
int pkcs12_kdf( int hash_id,
const unsigned char *pw, unsigned long pwlen,
const unsigned char *salt, unsigned long saltlen,

60
src/misc/pkcs12/pkcs12_utf8_to_utf16.c Normal file
View File

@ -0,0 +1,60 @@
/* LibTomCrypt, modular cryptographic library -- Tom St Denis
*
* LibTomCrypt is a library that provides various cryptographic
* algorithms in a highly modular and flexible manner.
*
* The library is free for all purposes without any express
* guarantee it works.
*/
#include "tomcrypt_private.h"
#ifdef LTC_PKCS_12
int pkcs12_utf8_to_utf16(const unsigned char *in, unsigned long inlen,
unsigned char *out, unsigned long *outlen) {
unsigned long len = 0;
const unsigned char* in_end = in + inlen;
const ulong32 offset[6] = {
0x00000000UL, 0x00003080UL, 0x000E2080UL,
0x03C82080UL, 0xFA082080UL, 0x82082080UL
};
int err = CRYPT_ERROR;
while (in < in_end) {
ulong32 ch = 0;
unsigned short extra = 0; /* 0 */
if (*in >= 192) extra++; /* 1 */
if (*in >= 224) extra++; /* 2 */
if (*in >= 240) extra++; /* 3 */
if (*in >= 248) extra++; /* 4 */
if (*in >= 252) extra++; /* 5 */
if (in + extra >= in_end) goto ERROR;
switch (extra) {
case 5: ch += *in++; ch <<= 6;
case 4: ch += *in++; ch <<= 6;
case 3: ch += *in++; ch <<= 6;
case 2: ch += *in++; ch <<= 6;
case 1: ch += *in++; ch <<= 6;
case 0: ch += *in++;
}
ch -= offset[extra];
if (ch > 0xFFFF) goto ERROR;
if (*outlen >= len + 2) {
out[len] = (unsigned short)((ch >> 8) & 0xFF);
out[len + 1] = (unsigned char)(ch & 0xFF);
}
len += 2;
}
err = len > *outlen ? CRYPT_BUFFER_OVERFLOW : CRYPT_OK;
*outlen = len;
ERROR:
return err;
}
#endif
/* ref: $Format:%D$ */
/* git commit: $Format:%H$ */
/* commit time: $Format:%ai$ */