void asn1_length_der (unsigned long int len, unsigned char *ans, int *ans_len) | |
{ | |
int k; | |
unsigned char temp[4]; | |
if (len < 128) { | |
if (ans != ((void *) 0)) | |
ans[0] = (unsigned char) len; | |
*ans_len = 1; | |
} else { | |
k = 0; | |
while (len) { | |
temp[k++] = len & 0xFF; | |
len = len >> 8; | |
} | |
*ans_len = k + 1; | |
if (ans != ((void *) 0)) { | |
ans[0] = ((unsigned char) k & 0x7F) + 128; | |
while (k--) | |
ans[*ans_len - 1 - k] = temp[k]; | |
} | |
} | |
} |