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enhance hex_decode
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This commit is contained in:
Evan Burkey
2024-04-11 07:17:42 -07:00
parent 0318221f3f
commit e622107f07
3 changed files with 26 additions and 7 deletions
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src/crypto.c
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@ -204,16 +204,22 @@ unsigned char *b64_decode(const char *s, size_t sz, size_t *decode_sz) {
unsigned char *hex_decode(const char *orig, size_t *sz) {
size_t buf_sz = strlen(orig) + 1;
char *sptr = orig;
if (strncmp(orig, "0x", 2) == 0) {
buf_sz -= 2;
sptr += 2;
}
if (strlen(orig) % 2 != 0) {
buf_sz += 1;
}
char *buf = malloc(sizeof(char) * buf_sz);
if (strlen(orig) % 2 != 0) {
strcpy(buf + 1, orig);
if (strlen(sptr) % 2 != 0) {
strcpy(buf+ 1, sptr);
buf[0] = '0';
} else {
strcpy(buf, orig);
strcpy(buf, sptr);
}
buf[buf_sz - 1] = '\0';