I have a PEM-format server certificate that I need to convert to a binary
structure as defined in section 7.4.2. (Server Certificate) of RFC5246
(TLS v1.2).
Server certificate (in PEM format), residing as a
text file in the filesystem
|
|
V
Load into buffer in memory with structure as defined in RFC5246:
opaque ASN.1Cert<1..2^24-1>;
struct {
ASN.1Cert certificate_list<0..2^24-1>;
} Certificate;
certificate_list
Also, I will need to do the reverse: converting a binary buffer in memory
(with the structure above) into a PEM-format server certificate.
My question is: are there OpenSSL routines that do this? I have looked at
X509 *PEM_read_bio_X509(BIO *bp, X509 **x,
pem_password_cb *cb, void *u);
but it is not clear to me how I should handle (BIO* bp). If this function
indeed does what I need, how would I convert my memory buffer to a BIO, and
vice versa?
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