.\" $OpenBSD: EVP_PKEY_set1_RSA.3,v 1.16 2019/09/01 09:10:09 schwarze Exp $ .\" full merge up to: OpenSSL 99d63d46 Oct 26 13:56:48 2016 -0400 .\" .\" This file is a derived work. .\" The changes are covered by the following Copyright and license: .\" .\" Copyright (c) 2019 Ingo Schwarze .\" .\" Permission to use, copy, modify, and distribute this software for any .\" purpose with or without fee is hereby granted, provided that the above .\" copyright notice and this permission notice appear in all copies. .\" .\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES .\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF .\" MERCHANTABILITY AND FITNESS. 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IN NO EVENT SHALL THE OpenSSL PROJECT OR .\" ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, .\" SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT .\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; .\" LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, .\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED .\" OF THE POSSIBILITY OF SUCH DAMAGE. .\" .Dd $Mdocdate: September 1 2019 $ .Dt EVP_PKEY_SET1_RSA 3 .Os .Sh NAME .Nm EVP_PKEY_set1_RSA , .Nm EVP_PKEY_set1_DSA , .Nm EVP_PKEY_set1_DH , .Nm EVP_PKEY_set1_EC_KEY , .Nm EVP_PKEY_get1_RSA , .Nm EVP_PKEY_get1_DSA , .Nm EVP_PKEY_get1_DH , .Nm EVP_PKEY_get1_EC_KEY , .Nm EVP_PKEY_get0_RSA , .Nm EVP_PKEY_get0_DSA , .Nm EVP_PKEY_get0_DH , .Nm EVP_PKEY_get0_EC_KEY , .Nm EVP_PKEY_get0_hmac , .Nm EVP_PKEY_get0 , .Nm EVP_PKEY_assign_RSA , .Nm EVP_PKEY_assign_DSA , .Nm EVP_PKEY_assign_DH , .Nm EVP_PKEY_assign_EC_KEY , .Nm EVP_PKEY_assign_GOST , .Nm EVP_PKEY_assign , .Nm EVP_PKEY_set_type , .Nm EVP_PKEY_base_id , .Nm EVP_PKEY_id , .Nm EVP_PKEY_type .Nd EVP_PKEY assignment functions .Sh SYNOPSIS .In openssl/evp.h .Ft int .Fo EVP_PKEY_set1_RSA .Fa "EVP_PKEY *pkey" .Fa "RSA *key" .Fc .Ft int .Fo EVP_PKEY_set1_DSA .Fa "EVP_PKEY *pkey" .Fa "DSA *key" .Fc .Ft int .Fo EVP_PKEY_set1_DH .Fa "EVP_PKEY *pkey" .Fa "DH *key" .Fc .Ft int .Fo EVP_PKEY_set1_EC_KEY .Fa "EVP_PKEY *pkey" .Fa "EC_KEY *key" .Fc .Ft RSA * .Fo EVP_PKEY_get1_RSA .Fa "EVP_PKEY *pkey" .Fc .Ft DSA * .Fo EVP_PKEY_get1_DSA .Fa "EVP_PKEY *pkey" .Fc .Ft DH * .Fo EVP_PKEY_get1_DH .Fa "EVP_PKEY *pkey" .Fc .Ft EC_KEY * .Fo EVP_PKEY_get1_EC_KEY .Fa "EVP_PKEY *pkey" .Fc .Ft RSA * .Fo EVP_PKEY_get0_RSA .Fa "EVP_PKEY *pkey" .Fc .Ft DSA * .Fo EVP_PKEY_get0_DSA .Fa "EVP_PKEY *pkey" .Fc .Ft DH * .Fo EVP_PKEY_get0_DH .Fa "EVP_PKEY *pkey" .Fc .Ft EC_KEY * .Fo EVP_PKEY_get0_EC_KEY .Fa "EVP_PKEY *pkey" .Fc .Ft const unsigned char * .Fo EVP_PKEY_get0_hmac .Fa "const EVP_PKEY *pkey" .Fa "size_t *len" .Fc .Ft void * .Fo EVP_PKEY_get0 .Fa "const EVP_PKEY *pkey" .Fc .Ft int .Fo EVP_PKEY_assign_RSA .Fa "EVP_PKEY *pkey" .Fa "RSA *key" .Fc .Ft int .Fo EVP_PKEY_assign_DSA .Fa "EVP_PKEY *pkey" .Fa "DSA *key" .Fc .Ft int .Fo EVP_PKEY_assign_DH .Fa "EVP_PKEY *pkey" .Fa "DH *key" .Fc .Ft int .Fo EVP_PKEY_assign_EC_KEY .Fa "EVP_PKEY *pkey" .Fa "EC_KEY *key" .Fc .Ft int .Fo EVP_PKEY_assign_GOST .Fa "EVP_PKEY *pkey" .Fa "GOST_KEY *key" .Fc .Ft int .Fo EVP_PKEY_assign .Fa "EVP_PKEY *pkey" .Fa "int type" .Fa "void *key" .Fc .Ft int .Fo EVP_PKEY_set_type .Fa "EVP_PKEY *pkey" .Fa "int type" .Fc .Ft int .Fo EVP_PKEY_base_id .Fa "EVP_PKEY *pkey" .Fc .Ft int .Fo EVP_PKEY_id .Fa "EVP_PKEY *pkey" .Fc .Ft int .Fo EVP_PKEY_type .Fa "int type" .Fc .Sh DESCRIPTION .Fn EVP_PKEY_set1_RSA , .Fn EVP_PKEY_set1_DSA , .Fn EVP_PKEY_set1_DH , and .Fn EVP_PKEY_set1_EC_KEY set the key referenced by .Fa pkey to .Fa key and increment the reference count of .Fa key by 1 in case of success. .Pp .Fn EVP_PKEY_get1_RSA , .Fn EVP_PKEY_get1_DSA , .Fn EVP_PKEY_get1_DH , and .Fn EVP_PKEY_get1_EC_KEY return the key referenced in .Fa pkey , incrementing its reference count by 1, or .Dv NULL if the key is not of the correct type. .Pp .Fn EVP_PKEY_get0_RSA , .Fn EVP_PKEY_get0_DSA , .Fn EVP_PKEY_get0_DH , .Fn EVP_PKEY_get0_EC_KEY , and .Fn EVP_PKEY_get0 are identical except that they do not increment the reference count. Consequently, the returned key must not be freed by the caller. .Pp .Fn EVP_PKEY_get0_hmac returns an internal pointer to the key referenced in .Fa pkey and sets .Pf * Fa len to its length in bytes. The returned pointer must not be freed by the caller. If .Fa pkey is not of the correct type, .Dv NULL is returned and the content of .Pf * Fa len becomes unspecified. .Pp .Fn EVP_PKEY_assign_RSA , .Fn EVP_PKEY_assign_DSA , .Fn EVP_PKEY_assign_DH , .Fn EVP_PKEY_assign_EC_KEY , .Fn EVP_PKEY_assign_GOST , and .Fn EVP_PKEY_assign also set the referenced key to .Fa key ; however these use the supplied .Fa key internally without incrementing its reference count, such that .Fa key will be freed when the parent .Fa pkey is freed. If the .Fa key is of the wrong type, these functions report success even though .Fa pkey ends up in a corrupted state. Even the functions explicitly containing the type in their name are .Em not type safe because they are implemented as macros. The following types are supported: .Dv EVP_PKEY_RSA , .Dv EVP_PKEY_DSA , .Dv EVP_PKEY_DH , .Dv EVP_PKEY_EC , and .Dv EVP_PKEY_GOSTR01 . .Pp .Fn EVP_PKEY_set_type frees the key referenced in .Fa pkey , if any, and sets the key type of .Fa pkey to .Fa type without referencing a new key from .Fa pkey yet. .Pp .Fn EVP_PKEY_base_id returns the type of .Fa pkey . For example, an RSA key will return .Dv EVP_PKEY_RSA . .Pp .Fn EVP_PKEY_id returns the actual OID associated with .Fa pkey . Historically keys using the same algorithm could use different OIDs. For example, an RSA key could use the OIDs corresponding to the NIDs .Dv NID_rsaEncryption (equivalent to .Dv EVP_PKEY_RSA ) or .Dv NID_rsa (equivalent to .Dv EVP_PKEY_RSA2 ) . The use of alternative non-standard OIDs is now rare, so .Dv EVP_PKEY_RSA2 et al. are not often seen in practice. .Pp .Fn EVP_PKEY_type returns the underlying type of the NID .Fa type . For example, .Fn EVP_PKEY_type EVP_PKEY_RSA2 will return .Dv EVP_PKEY_RSA . .Pp Most applications wishing to know a key type will simply call .Fn EVP_PKEY_base_id and will not care about the actual type, which will be identical in almost all cases. .Pp In accordance with the OpenSSL naming convention, the key obtained from or assigned to .Fa pkey using the .Sy 1 functions must be freed as well as .Fa pkey . .Sh RETURN VALUES .Fn EVP_PKEY_set1_RSA , .Fn EVP_PKEY_set1_DSA , .Fn EVP_PKEY_set1_DH , .Fn EVP_PKEY_set1_EC_KEY , .Fn EVP_PKEY_assign_RSA , .Fn EVP_PKEY_assign_DSA , .Fn EVP_PKEY_assign_DH , .Fn EVP_PKEY_assign_EC_KEY , .Fn EVP_PKEY_assign_GOST , .Fn EVP_PKEY_assign , and .Fn EVP_PKEY_set_type return 1 for success or 0 for failure. .Pp .Fn EVP_PKEY_get1_RSA , .Fn EVP_PKEY_get1_DSA , .Fn EVP_PKEY_get1_DH , .Fn EVP_PKEY_get1_EC_KEY , .Fn EVP_PKEY_get0_RSA , .Fn EVP_PKEY_get0_DSA , .Fn EVP_PKEY_get0_DH , .Fn EVP_PKEY_get0_EC_KEY , .Fn EVP_PKEY_get0_hmac , and .Fn EVP_PKEY_get0 return the referenced key or .Dv NULL if an error occurred. For .Fn EVP_PKEY_get0 , the return value points to an .Vt RSA , .Vt DSA , .Vt DH , .Vt EC_KEY , .Vt GOST_KEY , or .Vt ASN1_OCTET_STRING object depending on the type of .Fa pkey . .Pp .Fn EVP_PKEY_base_id , .Fn EVP_PKEY_id , and .Fn EVP_PKEY_type return a key type or .Dv NID_undef (equivalently .Dv EVP_PKEY_NONE ) on error. .Sh SEE ALSO .Xr DH_new 3 , .Xr DSA_new 3 , .Xr EC_KEY_new 3 , .Xr EVP_PKEY_get0_asn1 3 , .Xr EVP_PKEY_new 3 , .Xr RSA_new 3 .Sh HISTORY .Fn EVP_PKEY_assign_RSA , .Fn EVP_PKEY_assign_DSA , .Fn EVP_PKEY_assign_DH , .Fn EVP_PKEY_assign , and .Fn EVP_PKEY_type first appeared in SSLeay 0.8.0 and have been available since .Ox 2.4 . .Pp .Fn EVP_PKEY_set1_RSA , .Fn EVP_PKEY_set1_DSA , .Fn EVP_PKEY_set1_DH , .Fn EVP_PKEY_get1_RSA , .Fn EVP_PKEY_get1_DSA , and .Fn EVP_PKEY_get1_DH first appeared in OpenSSL 0.9.5 and have been available since .Ox 2.7 . .Pp .Fn EVP_PKEY_set1_EC_KEY , .Fn EVP_PKEY_get1_EC_KEY , and .Fn EVP_PKEY_assign_EC_KEY first appeared in OpenSSL 0.9.8 and have been available since .Ox 4.5 . .Pp .Fn EVP_PKEY_get0 , .Fn EVP_PKEY_set_type , .Fn EVP_PKEY_base_id , and .Fn EVP_PKEY_id first appeared in OpenSSL 1.0.0 and have been available since .Ox 4.9 . .Pp .Fn EVP_PKEY_assign_GOST first appeared in .Ox 5.7 . .Pp .Fn EVP_PKEY_get0_RSA , .Fn EVP_PKEY_get0_DSA , .Fn EVP_PKEY_get0_DH , and .Fn EVP_PKEY_get0_EC_KEY first appeared in OpenSSL 1.1.0 and have been available since .Ox 6.3 . .Pp .Fn EVP_PKEY_get0_hmac first appeared in OpenSSL 1.1.0 and has been available since .Ox 6.5 .