> On Mar 28, 2018, at 11:02 AM, Jordan Brown <open...@jordan.maileater.net>
> wrote:
>
> I'm finding that it would be helpful to have a function that would, given PEM
> data (in memory or in a file) return an indication of what kind of object it
> represents: a certificate, a private key, et cetera. The ideal function
> would basically tell me which PEM_read_bio_foobar function I would use to
> read the PEM data (and thus what C type it represents). It would lump all
> private key formats into one type, since PEM_read_PrivateKey would work on
> all of them and return an EVP_PKEY.
>
> Does such a function already exist? Any thoughts?
PEM_read_bio() reads a generic PEM object. The header name
can then be compared with the various PEM_STRING_... constants.
OpenSSL can already read keys in a general way. See,
PEM_read_bio_PrivateKey() returning an EVP_PKEY. So you
don't need to reinvent this.
--
Viktor.
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