Holds the key
the format of output params. One of PEM or DER.
const char * password
the password that will be used to encrypt the key.
unsigned int flags
an ORed sequence of gnutls_pkcs_encrypt_flags_t
gnutls_datum_t * out
will contain a private key PEM or DER encoded
This function will export the private key to a PKCS8 structure.
Both RSA and DSA keys can be exported. For DSA keys we use PKCS
11 definitions. If the flags do not specify the encryption
cipher, then the default 3DES (PBES2) will be used.
The password can be either ASCII or UTF-8 in the default PBES2
encryption schemas, or ASCII for the PKCS12 schemas.
The output buffer is allocated using gnutls_malloc().
If the structure is PEM encoded, it will have a header of "BEGIN
ENCRYPTED PRIVATE KEY" or "BEGIN PRIVATE KEY" if encryption is
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