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EVP_PKEY_SET1_RSA(3ossl)            OpenSSL           EVP_PKEY_SET1_RSA(3ossl)

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_assign_POLY1305,
       EVP_PKEY_assign_SIPHASH, EVP_PKEY_get0_hmac, EVP_PKEY_get0_poly1305,
       EVP_PKEY_get0_siphash, EVP_PKEY_get0, EVP_PKEY_type, EVP_PKEY_get_id,
       EVP_PKEY_get_base_id, EVP_PKEY_set1_engine, EVP_PKEY_get0_engine,
       EVP_PKEY_id, EVP_PKEY_base_id - EVP_PKEY assignment functions

SYNOPSIS
        #include <openssl/evp.h>

        int EVP_PKEY_get_id(const EVP_PKEY *pkey);
        int EVP_PKEY_get_base_id(const EVP_PKEY *pkey);
        int EVP_PKEY_type(int type);

        #define EVP_PKEY_id EVP_PKEY_get_id
        #define EVP_PKEY_base_id EVP_PKEY_get_base_id

       The following functions have been deprecated since OpenSSL 3.0, and can
       be hidden entirely by defining OPENSSL_API_COMPAT with a suitable
       version value, see openssl_user_macros(7):

        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);
        const unsigned char *EVP_PKEY_get0_poly1305(const EVP_PKEY *pkey, size_t *len);
        const unsigned char *EVP_PKEY_get0_siphash(const EVP_PKEY *pkey, size_t *len);
        const RSA *EVP_PKEY_get0_RSA(const EVP_PKEY *pkey);
        const DSA *EVP_PKEY_get0_DSA(const EVP_PKEY *pkey);
        const DH *EVP_PKEY_get0_DH(const EVP_PKEY *pkey);
        const EC_KEY *EVP_PKEY_get0_EC_KEY(const EVP_PKEY *pkey);
        void *EVP_PKEY_get0(const 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_assign_POLY1305(EVP_PKEY *pkey, ASN1_OCTET_STRING *key);
        int EVP_PKEY_assign_SIPHASH(EVP_PKEY *pkey, ASN1_OCTET_STRING *key);

        ENGINE *EVP_PKEY_get0_engine(const EVP_PKEY *pkey);
        int EVP_PKEY_set1_engine(EVP_PKEY *pkey, ENGINE *engine);

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

       EVP_PKEY_get_id() returns the actual NID associated with pkey only if
       the pkey type isn't implemented just in a provider(7).  Historically
       keys using the same algorithm could use different NIDs.  For example an
       RSA key could use the NIDs 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 NIDs is now rare so EVP_PKEY_RSA2
       et al are not often seen in practice.  EVP_PKEY_get_id() returns -1
       (EVP_PKEY_KEYMGMT) if the pkey is only implemented in a provider(7).

       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_RSA(), EVP_PKEY_set1_DSA(), EVP_PKEY_set1_DH() and
       EVP_PKEY_set1_EC_KEY() set the key referenced by pkey to key. These
       functions are deprecated. Applications should instead use
       EVP_PKEY_fromdata(3).

       EVP_PKEY_assign_RSA(), EVP_PKEY_assign_DSA(), EVP_PKEY_assign_DH(),
       EVP_PKEY_assign_EC_KEY(), EVP_PKEY_assign_POLY1305() and
       EVP_PKEY_assign_SIPHASH() 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. These macros are deprecated. Applications should
       instead read an EVP_PKEY directly using the OSSL_DECODER APIs (see
       OSSL_DECODER_CTX_new_for_pkey(3)), or construct an EVP_PKEY from data
       using EVP_PKEY_fromdata(3).

       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. The returned key must be freed after
       use.  These functions are deprecated. Applications should instead use
       the EVP_PKEY directly where possible. If access to the low level key
       parameters is required then applications should use
       EVP_PKEY_get_params(3) and other similar functions. To write an
       EVP_PKEY out use the OSSL_ENCODER APIs (see
       OSSL_ENCODER_CTX_new_for_pkey(3)).

       EVP_PKEY_get0_hmac(), EVP_PKEY_get0_poly1305(),
       EVP_PKEY_get0_siphash(), EVP_PKEY_get0_RSA(), EVP_PKEY_get0_DSA(),
       EVP_PKEY_get0_DH() and EVP_PKEY_get0_EC_KEY() return the referenced key
       in pkey or NULL if the key is not of the correct type. The reference
       count of the returned key is not incremented and so the key must not be
       freed after use. These functions are deprecated. Applications should
       instead use the EVP_PKEY directly where possible. If access to the low
       level key parameters is required then applications should use
       EVP_PKEY_get_params(3) and other similar functions.  To write an
       EVP_PKEY out use the OSSL_ENCODER APIs (see
       OSSL_ENCODER_CTX_new_for_pkey(3)). EVP_PKEY_get0() returns a pointer to
       the legacy key or NULL if the key is not legacy.

       Note that if an EVP_PKEY was not constructed using one of the
       deprecated functions such as EVP_PKEY_set1_RSA(), EVP_PKEY_set1_DSA(),
       EVP_PKEY_set1_DH() or EVP_PKEY_set1_EC_KEY(), or via the similarly
       named EVP_PKEY_assign macros described above then the internal key will
       be managed by a provider (see provider(7)). In that case the key
       returned by EVP_PKEY_get1_RSA(), EVP_PKEY_get1_DSA(),
       EVP_PKEY_get1_DH(), EVP_PKEY_get1_EC_KEY(), EVP_PKEY_get0_hmac(),
       EVP_PKEY_get0_poly1305(), EVP_PKEY_get0_siphash(), EVP_PKEY_get0_RSA(),
       EVP_PKEY_get0_DSA(), EVP_PKEY_get0_DH() or EVP_PKEY_get0_EC_KEY() will
       be a cached copy of the provider's key. Subsequent updates to the
       provider's key will not be reflected back in the cached copy, and
       updates made by an application to the returned key will not be
       reflected back in the provider's key. Subsequent calls to
       EVP_PKEY_get1_RSA(), EVP_PKEY_get1_DSA(), EVP_PKEY_get1_DH() and
       EVP_PKEY_get1_EC_KEY() will always return the cached copy returned by
       the first call.

       EVP_PKEY_get0_engine() returns a reference to the ENGINE handling pkey.
       This function is deprecated. Applications should use providers instead
       of engines (see provider(7) for details).

       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. This
       function is deprecated. Applications should use providers instead of
       engines (see provider(7) for details).

WARNINGS
       The following functions are only reliable with EVP_PKEYs that have been
       assigned an internal key with EVP_PKEY_assign_*():

       EVP_PKEY_get_id(), EVP_PKEY_get_base_id(), EVP_PKEY_type()

       For EVP_PKEY key type checking purposes, EVP_PKEY_is_a(3) is more
       generic.

       For purposes of retrieving the name of the EVP_PKEY the function
       EVP_PKEY_get0_type_name(3) is more generally useful.

       The keys returned from the functions EVP_PKEY_get0_RSA(),
       EVP_PKEY_get0_DSA(), EVP_PKEY_get0_DH() and EVP_PKEY_get0_EC_KEY() were
       changed to have a "const" return type in OpenSSL 3.0. As described
       above the keys returned may be cached copies of the key held in a
       provider. Due to this, and unlike in earlier versions of OpenSSL, they
       should be considered read-only copies of the key.  Updates to these
       keys will not be reflected back in the provider side key. The
       EVP_PKEY_get1_RSA(), EVP_PKEY_get1_DSA(), EVP_PKEY_get1_DH() and
       EVP_PKEY_get1_EC_KEY() functions were not changed to have a "const"
       return type in order that applications can "free" the return value.
       However applications should still consider them as read-only copies.

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(),
       EVP_PKEY_assign_EC_KEY(), EVP_PKEY_assign_POLY1305() and
       EVP_PKEY_assign_SIPHASH() are implemented as macros.

       EVP_PKEY_assign_EC_KEY() looks at the curve name id to determine if the
       passed EC_KEY is an SM2(7) key, and will set the EVP_PKEY type to
       EVP_PKEY_SM2 in that case, instead of EVP_PKEY_EC.

       Most applications wishing to know a key type will simply call
       EVP_PKEY_get_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_get_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.

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(),
       EVP_PKEY_assign_EC_KEY(), EVP_PKEY_assign_POLY1305() and
       EVP_PKEY_assign_SIPHASH() return 1 for success and 0 for failure.

       EVP_PKEY_get_base_id(), EVP_PKEY_get_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.

SEE ALSO
       EVP_PKEY_new(3), SM2(7)

HISTORY
       The EVP_PKEY_id() and EVP_PKEY_base_id() functions were renamed to
       include "get" in their names in OpenSSL 3.0, respectively. The old
       names are kept as non-deprecated alias macros.

       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_assign_POLY1305,
       EVP_PKEY_assign_SIPHASH, EVP_PKEY_get0_hmac, EVP_PKEY_get0_poly1305,
       EVP_PKEY_get0_siphash, EVP_PKEY_set1_engine and EVP_PKEY_get0_engine
       were deprecated in OpenSSL 3.0.

       The return value from EVP_PKEY_get0_RSA, EVP_PKEY_get0_DSA,
       EVP_PKEY_get0_DH, EVP_PKEY_get0_EC_KEY were made const in OpenSSL 3.0.

       The function EVP_PKEY_set_alias_type() was previously documented on
       this page.  It was removed in OpenSSL 3.0.

COPYRIGHT
       Copyright 2002-2023 The OpenSSL Project Authors. All Rights Reserved.

       Licensed under the Apache License 2.0 (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>.

3.0.14                            2024-06-04          EVP_PKEY_SET1_RSA(3ossl)

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