> From: [email protected] On Behalf Of
[email protected]
> Sent: Thursday, 02 July, 2009 06:53
<snip>
> FILE *fp = 0;
> char derCert[MAX_CERT_LEN];
> long len;
> if (fp = fopen("../der.cer", "rb")) {
> len=fread(derCert, 1, MAX_CERT_LEN - 1, fp);
> derCert[len] = '\0';
> }
DER data is not a C string; adding a null to 'terminate' it
will almost never help. To clarify/document this, I think
it is better style to use unsigned-char arrays (and pointers)
for it, although plain-char will work.
> //This is working ...[ BIO_new file ]...
> //This is not working
> if(( bioCert = BIO_new_mem_buf(derCert, -1)) == NULL)
> { ...[error]... }
DER data is not a C string; pass len from above instead of -1.
If you (convert to hex and) decode your error code, you get
error:0D06B08E:asn1 encoding routines:ASN1_D2I_READ_BIO:not enough data
which could have been a clue.
Incidentally, you don't need a mem-BIO to decode (or encode) exact
in-memory buffers; you can use the basic d2i and i2d routines.
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