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EVP_PKEY_set1_RSA(3)                OpenSSL               EVP_PKEY_set1_RSA(3)



NAME
       EVP_PKEY_set1_RSA, EVP_PKEY_set1_DSA, EVP_PKEY_set1_DH,
       EVP_PKEY_set1_EC_KEY, EVP_PKEY_get1_RSA, EVP_PKEY_get1_DSA,
       EVP_PKEY_get1_DH, EVP_PKEY_get1_EC_KEY, EVP_PKEY_get0_RSA,
       EVP_PKEY_get0_DSA, EVP_PKEY_get0_DH, EVP_PKEY_get0_EC_KEY,
       EVP_PKEY_assign_RSA, EVP_PKEY_assign_DSA, EVP_PKEY_assign_DH,
       EVP_PKEY_assign_EC_KEY, EVP_PKEY_get0_hmac, EVP_PKEY_type, EVP_PKEY_id,
       EVP_PKEY_base_id, EVP_PKEY_set_alias_type, EVP_PKEY_set1_engine -
       EVP_PKEY assignment functions

LIBRARY
       libcrypto, -lcrypto

SYNOPSIS
        #include <openssl/evp.h>

        int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key);
        int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key);
        int EVP_PKEY_set1_DH(EVP_PKEY *pkey, DH *key);
        int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, EC_KEY *key);

        RSA *EVP_PKEY_get1_RSA(EVP_PKEY *pkey);
        DSA *EVP_PKEY_get1_DSA(EVP_PKEY *pkey);
        DH *EVP_PKEY_get1_DH(EVP_PKEY *pkey);
        EC_KEY *EVP_PKEY_get1_EC_KEY(EVP_PKEY *pkey);

        const unsigned char *EVP_PKEY_get0_hmac(const EVP_PKEY *pkey, size_t *len);
        RSA *EVP_PKEY_get0_RSA(EVP_PKEY *pkey);
        DSA *EVP_PKEY_get0_DSA(EVP_PKEY *pkey);
        DH *EVP_PKEY_get0_DH(EVP_PKEY *pkey);
        EC_KEY *EVP_PKEY_get0_EC_KEY(EVP_PKEY *pkey);

        int EVP_PKEY_assign_RSA(EVP_PKEY *pkey, RSA *key);
        int EVP_PKEY_assign_DSA(EVP_PKEY *pkey, DSA *key);
        int EVP_PKEY_assign_DH(EVP_PKEY *pkey, DH *key);
        int EVP_PKEY_assign_EC_KEY(EVP_PKEY *pkey, EC_KEY *key);

        int EVP_PKEY_id(const EVP_PKEY *pkey);
        int EVP_PKEY_base_id(const EVP_PKEY *pkey);
        int EVP_PKEY_type(int type);
        int EVP_PKEY_set_alias_type(EVP_PKEY *pkey, int type);

        int EVP_PKEY_set1_engine(EVP_PKEY *pkey, ENGINE *engine);

DESCRIPTION
       EVP_PKEY_set1_RSA(), EVP_PKEY_set1_DSA(), EVP_PKEY_set1_DH() and
       EVP_PKEY_set1_EC_KEY() set the key referenced by pkey to key.

       EVP_PKEY_get1_RSA(), EVP_PKEY_get1_DSA(), EVP_PKEY_get1_DH() and
       EVP_PKEY_get1_EC_KEY() return the referenced key in pkey or NULL if the
       key is not of the correct type.

       EVP_PKEY_get0_hmac(), EVP_PKEY_get0_RSA(), EVP_PKEY_get0_DSA(),
       EVP_PKEY_get0_DH() and EVP_PKEY_get0_EC_KEY() also return the
       referenced key in pkey or NULL if the key is not of the correct type
       but the reference count of the returned key is not incremented and so
       must not be freed up after use.

       EVP_PKEY_assign_RSA(), EVP_PKEY_assign_DSA(), EVP_PKEY_assign_DH() and
       EVP_PKEY_assign_EC_KEY() also set the referenced key to key however
       these use the supplied key internally and so key will be freed when the
       parent pkey is freed.

       EVP_PKEY_base_id() returns the type of pkey. For example an RSA key
       will return EVP_PKEY_RSA.

       EVP_PKEY_id() returns the actual OID associated with pkey. Historically
       keys using the same algorithm could use different OIDs. For example an
       RSA key could use the OIDs corresponding to the NIDs NID_rsaEncryption
       (equivalent to EVP_PKEY_RSA) or NID_rsa (equivalent to EVP_PKEY_RSA2).
       The use of alternative non-standard OIDs is now rare so EVP_PKEY_RSA2
       et al are not often seen in practice.

       EVP_PKEY_type() returns the underlying type of the NID type. For
       example EVP_PKEY_type(EVP_PKEY_RSA2) will return EVP_PKEY_RSA.

       EVP_PKEY_set1_engine() sets the ENGINE handling pkey to engine. It must
       be called after the key algorithm and components are set up.  If engine
       does not include an EVP_PKEY_METHOD for pkey an error occurs.

       EVP_PKEY_set_alias_type() allows modifying a EVP_PKEY to use a
       different set of algorithms than the default. This is currently used to
       support SM2 keys, which use an identical encoding to ECDSA.

NOTES
       In accordance with the OpenSSL naming convention the key obtained from
       or assigned to the pkey using the 1 functions must be freed as well as
       pkey.

       EVP_PKEY_assign_RSA(), EVP_PKEY_assign_DSA(), EVP_PKEY_assign_DH() and
       EVP_PKEY_assign_EC_KEY() are implemented as macros.

       Most applications wishing to know a key type will simply call
       EVP_PKEY_base_id() and will not care about the actual type: which will
       be identical in almost all cases.

       Previous versions of this document suggested using
       EVP_PKEY_type(pkey->type) to determine the type of a key. Since
       EVP_PKEY is now opaque this is no longer possible: the equivalent is
       EVP_PKEY_base_id(pkey).

       EVP_PKEY_set1_engine() is typically used by an ENGINE returning an HSM
       key as part of its routine to load a private key.

EXAMPLES
       After loading an ECC key, it is possible to convert it to using SM2
       algorithms with EVP_PKEY_set_alias_type:

        EVP_PKEY_set_alias_type(pkey, EVP_PKEY_SM2);

RETURN VALUES
       EVP_PKEY_set1_RSA(), EVP_PKEY_set1_DSA(), EVP_PKEY_set1_DH() and
       EVP_PKEY_set1_EC_KEY() return 1 for success or 0 for failure.

       EVP_PKEY_get1_RSA(), EVP_PKEY_get1_DSA(), EVP_PKEY_get1_DH() and
       EVP_PKEY_get1_EC_KEY() return the referenced key or NULL if an error
       occurred.

       EVP_PKEY_assign_RSA(), EVP_PKEY_assign_DSA(), EVP_PKEY_assign_DH() and
       EVP_PKEY_assign_EC_KEY() return 1 for success and 0 for failure.

       EVP_PKEY_base_id(), EVP_PKEY_id() and EVP_PKEY_type() return a key type
       or NID_undef (equivalently EVP_PKEY_NONE) on error.

       EVP_PKEY_set1_engine() returns 1 for success and 0 for failure.

       EVP_PKEY_set_alias_type() returns 1 for success and 0 for error.

SEE ALSO
       EVP_PKEY_new(3)

COPYRIGHT
       Copyright 2002-2018 The OpenSSL Project Authors. All Rights Reserved.

       Licensed under the OpenSSL license (the "License").  You may not use
       this file except in compliance with the License.  You can obtain a copy
       in the file LICENSE in the source distribution or at
       <https://www.openssl.org/source/license.html>.



1.1.1                             2018-09-17              EVP_PKEY_set1_RSA(3)