Hi ,

i'm trying to convert ASN1_INTEGER (specifically certificate serial 
number) into its DER representation.
I'm using i2c_ASN1_INTEGER - and if it's the right function - then I don't 
understand why it moves a pointer passed to it as second parameter behind 
reserved memory.
Here is what I'm doing:

int size;
ASN1_INTEGER * serial;
unsigned char * serialNumberDER;

size = i2c_ASN1_INTEGER(serial, NULL);
serialNumberDER = new unsigned char[*size];
size = i2c_ASN1_INTEGER(serial, & serialNumberDER);

The function has this code at the end:

*pp+=ret;

where pp is a pointer to serialNumberDER, so in effect it moves 
serialNumberDER behind created array of unsigned char.

Please, explain it to me.
Thanks in advance.

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