[openssl-users] get type of PEM data
openssl-users at dukhovni.org
Wed Mar 28 16:59:45 UTC 2018
> On Mar 28, 2018, at 11:02 AM, Jordan Brown <openssl at 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.
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