PKCS12_create (3)

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NAME

PKCS12_create - create a PKCS#12 structure

SYNOPSIS

 #include <openssl/pkcs12.h>

 PKCS12 *PKCS12_create(char *pass, char *name, EVP_PKEY *pkey, X509 *cert, STACK_OF(X509) *ca,
                                int nid_key, int nid_cert, int iter, int mac_iter, int keytype);

DESCRIPTION

PKCS12_create() creates a PKCS#12 structure.

pass is the passphrase to use. name is the friendlyName to use for the supplied certifictate and key. pkey is the private key to include in the structure and cert its corresponding certificates. ca, if not

is an optional set of certificates to also include in the structure.

nid_key and nid_cert are the encryption algorithms that should be used for the key and certificate respectively. iter is the encryption algorithm iteration count to use and mac_iter is the

iteration count to use. keytype is the type of key.

NOTES

The parameters nid_key, nid_cert, iter, mac_iter and keytype can all be set to zero and sensible defaults will be used.

These defaults are: 40 bit

encryption for certificates, triple encryption for private keys, a key iteration count of (currently 2048) and a iteration count of 1.

The default

iteration count is 1 in order to retain compatibility with old software which did not interpret iteration counts. If such compatibility is not required then mac_iter should be set to

keytype adds a flag to the store private key. This is a non standard extension that is only currently interpreted by

If set to zero the flag is omitted, if set to the key can be used for signing only, if set to it can be used for signing and encryption. This option was useful for old export grade software which could use signing only keys of arbitrary size but had restrictions on the permissible sizes of keys which could be used for encryption.

NEW FUNCTIONALITY IN OPENSSL 0.9.8

Some additional functionality was added to PKCS12_create() in OpenSSL 0.9.8. These extensions are detailed below.

If a certificate contains an alias or keyid then this will be used for the corresponding friendlyName or localKeyID in the

structure.

Either pkey, cert or both can be

to indicate that no key or certficate is required. In previous versions both had to be present or a fatal error is returned.

nid_key or nid_cert can be set to -1 indicating that no encryption should be used.

mac_iter can be set to -1 and the

will then be omitted entirely.

SEE ALSO

d2i_PKCS12(3)

HISTORY

PKCS12_create was added in OpenSSL 0.9.3