PEM_read_bio_RSAPublicKey equivalent API which returns EVP_PKEY
Skip Carter
skip at taygeta.com
Thu Apr 15 15:37:46 UTC 2021
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA384
Sunil,
Sorry, I didn't notice that you were talking about 3.0. My solution works for 1.1.1i.
It looks like I am going to have your problem when I migrate to 3.0 too.
On Thu, 2021-04-15 at 04:30 +0000, Paramashivaiah, Sunil wrote:
> Hi Skip Carter,
>
> Thanks for your reply.
> I replaced the code as you suggested, but I am getting below errors.
> It looks like I can't use RSA related APIs and data structures with Openssl
> 3.0.Please suggest if you know how to resolve these.
> I have included headers #include <openssl/pem.h>,#include
> <openssl/rsa.h>,#include <openssl/evp.h> and #include <openssl/types.h>
>
> error: 'RSA' was not declared in this scope
> RSA *rsa = NULL;
> ^~~
> error: 'rsa' was not declared in this scope
> RSA *rsa = NULL;
> ^~~
> note: suggested alternative: 'read'
> RSA *rsa = NULL;
> ^~~
> read
> error: 'PEM_read_bio_RSAPublicKey' was not declared in this scope
> rsa = PEM_read_bio_RSAPublicKey(keybio, NULL, NULL, NULL);
> ^~~~~~~~~~~~~~~~~~~~~~~~~
> note: suggested alternative: 'PEM_read_bio_PrivateKey'
> rsa = PEM_read_bio_RSAPublicKey(keybio, NULL, NULL, NULL);
> ^~~~~~~~~~~~~~~~~~~~~~~~~
> PEM_read_bio_PrivateKey
> error: 'EVP_PKEY_assign_RSA' was not declared in this scope
> EVP_PKEY_assign_RSA(evpkey, rsa);
> ^~~~~~~~~~~~~~~~~~~
> note: suggested alternative: 'EVP_PKEY_assign_DSA'
> EVP_PKEY_assign_RSA(evpkey, rsa);
> ^~~~~~~~~~~~~~~~~~~
>
> Thanks and Regards,
> Sunil
>
> From: Skip Carter <skip at taygeta.com>
> Sent: 14 April 2021 20:58
> To: Paramashivaiah, Sunil <Sunil.Paramashivaiah at rbbn.com>
> Subject: Re: PEM_read_bio_RSAPublicKey equivalent API which returns EVP_PKEY
>
> NOTICE: This email was received from an EXTERNAL sender.
>
>
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA384
>
> I accomplished this with:
>
> RSA *rsa = NULL;
>
> rsa = PEM_read_bio_RSAPublicKey(keybio,NULL,0,NULL);
> pkey = EVP_PKEY_new();
> EVP_PKEY_assign_RSA(pkey,rsa);
>
>
> On Wed, 2021-04-14 at 11:26 +0000, Paramashivaiah, Sunil wrote:
> > NEW CODE:
> >
> > EVP_PKEY *evpkey = NULL;
> > BIO *keybio ;
> > keybio = BIO_new_mem_buf((void*)key, -1);
> >
> > if (!keybio)
> > {
> > return NULL;
> > }
> >
> > if ( isPKCS1 == false )
> > {
> > evpkey = PEM_read_bio_PUBKEY(keybio, NULL, NULL, NULL);
> > }
> > else
> > {
> > // PROBLEM: what is the alternate API to replace PEM_read_bio_RSAPublicKey
> >
> > }
> > ------------------------------------------------------------------------------------
> --
> > -----------------------------------------------------------------------------------
> >
> >
> >
> > Thanks and Regards,
> > Sunil
> >
> > From: openssl-users <openssl-users-bounces at openssl.org> on behalf of
> > openssl-users-request at openssl.org <openssl-users-request at openssl.org>
> > Sent: 12 April 2021 22:12
> > To: openssl-users at openssl.org <openssl-users at openssl.org>
> > Subject: openssl-users Digest, Vol 77, Issue 20
> >
> > NOTICE: This email was received from an EXTERNAL sender.
> >
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> > than "Re: Contents of openssl-users digest..."
> >
> >
> > Today's Topics:
> >
> > 1. Re: EVP_MAC_init() in 3.0 alpha 13 (Hal Murray)
> > 2. Re: EVP_MAC_init() in 3.0 alpha 13 (Tomas Mraz)
> > 3. Re: error: redefinition of ?struct rsa_meth_st? (Shariful Alam)
> > 4. Re: PEM_read_bio_RSAPublicKey equivalent API which returns
> > EVP_PKEY (Richard Levitte)
> > 5. Re: error: redefinition of ?struct rsa_meth_st? (Matt Caswell)
> >
> >
> > ----------------------------------------------------------------------
> >
> > Message: 1
> > Date: Mon, 12 Apr 2021 05:48:57 -0700
> > From: Hal Murray <hmurray at megapathdsl.net>
> > To: Dr Paul Dale <pauli at openssl.org>
> > Cc: openssl-users at openssl.org
> > Subject: Re: EVP_MAC_init() in 3.0 alpha 13
> > Message-ID:
> > <20210412124857.623AB40605C at ip-64-139-1-69.sjc.megapath.net>
> > Content-Type: text/plain; charset=us-ascii
> >
> >
> > > Did you attempt to pass NULL for the key and zero for it's length to the
> > > EVP_MAC_init() call?
> >
> > Yes.
> >
> > We can do better. If we have to use dup/free, we can move the EVP_MAC_init()
> > to before the dup, out of the timing path.
> >
> > My model is that initialization is 2 parts. The first is turning the key into
> > a big table. The second is initializing a small amount of state that is
> > whatever is needed/updated by EVP_MAC_update().
> >
> > I was hoping that EVP_MAC_init() with NULL key would bypass the first step and
> > do the second.
> >
> > If the second step involves a lot of computation we get into the space/time
> > tradeoff of computing it during step one and saving it in case EVP_MAC_init is
> > called with NULL key.
> >
> > If there was a copy operation we could use it instead of dup/free.
> >
> > Where is the code that does the key setup? I expect it will be obvious after
> > I see it, but I don't know my way around that linkage yet. I'm using the
> > default AES-128-CBC.
> >
> > ---------
> >
> > I don't think I've said it explicitly, but thanks for the change to the API
> > for EVP_MAC_init()
> >
> > ----------
> >
> > Should PKEY be a potentially interesting approach for something like this? I
> > think it was suggested months ago. One advantage is that the code works with
> > 1.1.1.
> >
> > It's horribly slow in 3.0
> >
> > alpha14:
> > 0.777 CMAC
> > 7.533 PKEY
> > 3.323 PKEY preload
> > 0.392 EVP_MAC
> > 0.308 EVP_MAC Preload with dup+free
> > 0.102 EVP_MAC Preload (no dup, wrong answer)
> >
> > 1.1.1k:
> > 0.285 CMAC
> > 0.550 PKEY
> > 0.196 PKEY preload
> >
> >
> >
> > --
> > These are my opinions. I hate spam.
> >
> >
> >
> >
> >
> > ------------------------------
> >
> > Message: 2
> > Date: Mon, 12 Apr 2021 15:05:37 +0200
> > From: Tomas Mraz <tomas at openssl.org>
> > To: Hal Murray <hmurray at megapathdsl.net>, Dr Paul Dale
> > <pauli at openssl.org>
> > Cc: openssl-users at openssl.org
> > Subject: Re: EVP_MAC_init() in 3.0 alpha 13
> > Message-ID:
> > <348b006ceb83fd4301438cbb0c57b473a4f4ef23.camel at openssl.org>
> > Content-Type: text/plain; charset="UTF-8"
> >
> > On Mon, 2021-04-12 at 05:48 -0700, Hal Murray wrote:
> > > > Did you attempt to pass NULL for the key and zero for it's length
> > > > to the
> > > > EVP_MAC_init() call?
> > >
> > > Yes.
> > >
> > > We can do better. If we have to use dup/free, we can move the
> > > EVP_MAC_init()
> > > to before the dup, out of the timing path.
> > >
> > > My model is that initialization is 2 parts. The first is turning the
> > > key into
> > > a big table. The second is initializing a small amount of state that
> > > is
> > > whatever is needed/updated by EVP_MAC_update().
> > >
> > > I was hoping that EVP_MAC_init() with NULL key would bypass the first
> > > step and
> > > do the second.
> >
> > We would have to introduce the special semantics similar to
> > EVP_CipherInit() with EVP_MAC_init(). I.e., that the EVP_CipherInit()
> > with NULL key keeps the key schedule from the previous initialization.
> >
> > > If the second step involves a lot of computation we get into the
> > > space/time
> > > tradeoff of computing it during step one and saving it in case
> > > EVP_MAC_init is
> > > called with NULL key.
> > >
> > > If there was a copy operation we could use it instead of dup/free.
> >
> > I do not think we want to introduce the copy operation. We are trying
> > to get out of the copy() pattern as it is much harder to handle
> > correctly than the dup().
> >
> > > Where is the code that does the key setup? I expect it will be
> > > obvious after
> > > I see it, but I don't know my way around that linkage yet. I'm using
> > > the
> > > default AES-128-CBC.
> > >
> > > ---------
> > >
> > > I don't think I've said it explicitly, but thanks for the change to
> > > the API
> > > for EVP_MAC_init()
> > >
> > > ----------
> > >
> > > Should PKEY be a potentially interesting approach for something like
> > > this? I
> > > think it was suggested months ago. One advantage is that the code
> > > works with
> > > 1.1.1.
> > >
> > > It's horribly slow in 3.0
> > >
> > > alpha14:
> > > 0.777 CMAC
> > > 7.533 PKEY
> > > 3.323 PKEY preload
> > > 0.392 EVP_MAC
> > > 0.308 EVP_MAC Preload with dup+free
> > > 0.102 EVP_MAC Preload (no dup, wrong answer)
> > >
> > > 1.1.1k:
> > > 0.285 CMAC
> > > 0.550 PKEY
> > > 0.196 PKEY preload
> > >
> > >
> > >
> > --
> > Tom?? Mr?z
> > No matter how far down the wrong road you've gone, turn back.
> > Turkish proverb
> > [You'll know whether the road is wrong if you carefully listen to your
> > conscience.]
> >
> >
> >
> >
> > ------------------------------
> >
> > Message: 3
> > Date: Mon, 12 Apr 2021 10:32:32 -0600
> > From: Shariful Alam <dipto181 at gmail.com>
> > To: Dr Paul Dale <pauli at openssl.org>
> > Cc: openssl-users at openssl.org
> > Subject: Re: error: redefinition of ?struct rsa_meth_st?
> > Message-ID:
> > <CAA0KgGo3P96yHk8JZGT=c1oxqqHiqkntDPF406VFqecdj_HdEg at mail.gmail.com>
> > Content-Type: text/plain; charset="utf-8"
> >
> > Dr. Pauli,
> > Goodmorning. Thank you for replying. I found the documentation a bit
> > difficult for me to understand. I was wondering if you can direct me to a
> > sample skeleton code for creating a custom RSA engine.
> >
> > Regards,
> > Shariful Alam
> >
> > On Sun, Apr 11, 2021 at 6:00 PM Dr Paul Dale <pauli at openssl.org> wrote:
> >
> > > You shouldn't be accessing the internal of a private structure. That
> > > structure was made private for a reason and duplicating it in your engine
> > > will break when we change the structure's contents.
> > >
> > > Your engine should be using the EVP_PKEY_meth_set_* function to do what
> > > you want (for 1.1.1). For 3.0, you should be writing a provider instead.
> > >
> > >
> > > Pauli
> > >
> > > On 12/4/21 5:04 am, Shariful Alam wrote:
> > >
> > > Hello,
> > > Hope you guys are doing well. I'm trying to develop an RSA engine. My
> > > engine was somewhat working until I try to integrate my engine with an
> > > apache httpd server. After installing the httpd from the source code, it
> > > turns out that, I can't compile my engine anymore. I get the
> > > following error while I try to compile (it was compiling before and I did
> > > not make any changes to my engine code).
> > >
> > > ==============================
> > >
> > > *$gcc -fPIC -c r_engine.c*
> > >
> > >
> > >
> > >
> > >
> > >
> > > *r_engine.c:29:8: error: redefinition of ?struct rsa_meth_st? struct
> > > rsa_meth_st { ^ In file included from
> > > /usr/include/openssl/crypto.h:131:0, from r_engine.c:7:
> > > /usr/include/openssl/ossl_typ.h:147:16: note: originally defined here
> > > typedef struct rsa_meth_st RSA_METHOD;*
> > >
> > > =============================
> > >
> > > and my *struct rsa_meth_st *looks like the following,
> > >
> > >
> > > ================================================================================
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > *struct rsa_meth_st { const char *name; int (*rsa_pub_enc) (int
> > > flen, const unsigned char *from, unsigned char *to, RSA *rsa, int padding);
> > > int (*rsa_pub_dec) (int flen, const unsigned char *from, unsigned char
> > > *to, RSA *rsa, int padding); int (*rsa_priv_enc) (int flen, const
> > > unsigned char *from, unsigned char *to, RSA *rsa, int padding); int
> > > (*rsa_priv_dec) (int flen, const unsigned char *from, unsigned char *to,
> > > RSA *rsa, int padding); int (*rsa_mod_exp) (BIGNUM *r0, const BIGNUM
> > > *I, RSA *rsa, BN_CTX *ctx); int (*bn_mod_exp) (BIGNUM *r, const BIGNUM
> > > *a, const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
> > > int (*init) (RSA *rsa); int (*finish) (RSA *rsa); int flags;
> > > char *app_data; int (*rsa_sign) (int type, const unsigned char *m,
> > > unsigned int m_length, unsigned char *sigret, unsigned int *siglen, const
> > > RSA *rsa); int (*rsa_verify) (int dtype, const unsigned char *m,
> > > unsigned int m_length, const unsigned char *sigbuf, unsigned int siglen,
> > > const RSA *rsa); int (*rsa_keygen) (RSA *rsa, int bits, BIGNUM *e,
> > > BN_GENCB *cb); }; *
> > >
> > >
> > > =================================================================================
> > >
> > > My sample skeleton code is here
> >
> https://clicktime.symantec.com/33X17gA39DAZvzaTx4AG8ej6H2?u=https%3A%2F%2Fpastebin.com%2FuNXYknEA
> > >
> > > Can anyone please tell me what I'm I doing wrong?
> > >
> > > Regards,
> > > Shariful Alam
> > >
> > >
> > >
> > -------------- next part --------------
> > An HTML attachment was scrubbed...
> > URL: <
> >
> https://clicktime.symantec.com/3swRYpsU9KK78WoSiSrAfr6H2?u=https%3A%2F%2Fmta.openssl.org%2Fpipermail%2Fopenssl-users%2Fattachments%2F20210412%2F3eab5997%2Fattachment-0001.html
> > >
> >
> > ------------------------------
> >
> > Message: 4
> > Date: Mon, 12 Apr 2021 18:34:51 +0200
> > From: Richard Levitte <levitte at openssl.org>
> > To: "openssl-users at openssl.org" <openssl-users at openssl.org>
> > Subject: Re: PEM_read_bio_RSAPublicKey equivalent API which returns
> > EVP_PKEY
> > Message-ID: <87h7kba2c4.wl-levitte at openssl.org>
> > Content-Type: text/plain; charset=US-ASCII
> >
> > On Mon, 12 Apr 2021 06:24:32 +0200,
> > Paramashivaiah, Sunil wrote:
> > >
> > > But, I couldn't find equivallent API to replace "PEM_read_bio_RSAPublicKey" to get
> > EVP_PKEY for
> > > creating EVP ctx(EVP_PKEY_CTX_new) to use in "EVP_PKEY_encrypt" and
> > "EVP_PKEY_decrypt".
> >
> > I believe that one of these functions would help you:
> >
> > EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e);
> >
> > EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_pkey(OSSL_LIB_CTX *libctx,
> > EVP_PKEY *pkey, const char *propquery);
> >
> > Cheers,
> > Richard
> >
> > --
> > Richard Levitte levitte at openssl.org
> > OpenSSL Project
> >
> https://clicktime.symantec.com/3Mg1WCF9H66r4CYkJ5HJcfU6H2?u=http%3A%2F%2Fwww.openssl.org%2F~levitte%2F
> >
> >
> > ------------------------------
> >
> > Message: 5
> > Date: Mon, 12 Apr 2021 17:42:20 +0100
> > From: Matt Caswell <matt at openssl.org>
> > To: openssl-users at openssl.org
> > Subject: Re: error: redefinition of ?struct rsa_meth_st?
> > Message-ID: <f1a6c492-58f3-b35e-4f8b-186df020e080 at openssl.org>
> > Content-Type: text/plain; charset=utf-8; format=flowed
> >
> > You can look at the dummy async engine which wraps the standard RSA
> > functions inside an engine (as well as various other crypto primitives).
> > You can see it here:
> >
> >
> https://clicktime.symantec.com/36mWBLRZPoyFNTFYDsD2yZ26H2?u=https%3A%2F%2Fgithub.com%2Fopenssl%2Fopenssl%2Fblob%2FOpenSSL_1_1_1-stable%2Fengines%2Fe_dasync.c
> >
> > Matt
> >
> > On 12/04/2021 17:32, Shariful Alam wrote:
> > > Dr. Pauli,
> > > Goodmorning. Thank you for replying. I found the documentation a bit
> > > difficult for me to understand. I was wondering if you can direct me to
> > > a sample skeleton code for creating a custom RSA engine.
> > >
> > > Regards,
> > > Shariful Alam
> > >
> > > On Sun, Apr 11, 2021 at 6:00 PM Dr Paul Dale <pauli at openssl.org
> > > <mailto:pauli at openssl.org>> wrote:
> > >
> > > You shouldn't be accessing the internal of a private structure. That
> > > structure was made private for a reason and duplicating it in your
> > > engine will break when we change the structure's contents.
> > >
> > > Your engine should be using the EVP_PKEY_meth_set_* function to do
> > > what you want (for 1.1.1).? For 3.0, you should be writing a
> > > provider instead.
> > >
> > >
> > > Pauli
> > >
> > > On 12/4/21 5:04 am, Shariful Alam wrote:
> > >> Hello,
> > >> Hope you guys are doing well. I'm trying to develop an RSA engine.
> > >> My engine was somewhat working until?I try to integrate my engine
> > >> with an apache httpd server. After installing the httpd from the
> > >> source code, it turns out that, I can't compile my engine anymore.
> > >> I get the following?error while I try to compile (it was compiling
> > >> before and I did not make any changes to my engine code).
> > >>
> > >> ==============================
> > >>
> > >> *$gcc -fPIC -c r_engine.c*
> > >> *r_engine.c:29:8: error: redefinition of ?struct rsa_meth_st?
> > >> ?struct rsa_meth_st {
> > >> ? ? ? ? ^
> > >> In file included from /usr/include/openssl/crypto.h:131:0,
> > >> ? ? ? ? ? ? ? ? ?from r_engine.c:7:
> > >> /usr/include/openssl/ossl_typ.h:147:16: note: originally defined here
> > >> ?typedef struct rsa_meth_st RSA_METHOD;*
> > >>
> > >> =============================
> > >>
> > >> and my *struct rsa_meth_st *looks like the following,
> > >>
> > >>
> > ================================================================================
> > >>
> > >> *struct rsa_meth_st {
> > >>
> > >> ? ? const char *name;
> > >> ? ? int (*rsa_pub_enc) (int flen, const unsigned char *from,
> > >> unsigned char *to, RSA *rsa, int padding);
> > >> ? ? int (*rsa_pub_dec) (int flen, const unsigned char *from,
> > >> unsigned char *to, RSA *rsa, int padding);
> > >> ? ? int (*rsa_priv_enc) (int flen, const unsigned char *from,
> > >> unsigned char *to, RSA *rsa, int padding);
> > >> ? ? int (*rsa_priv_dec) (int flen, const unsigned char *from,
> > >> unsigned char *to, RSA *rsa, int padding);
> > >>
> > >> ? ? int (*rsa_mod_exp) (BIGNUM *r0, const BIGNUM *I, RSA *rsa,
> > >> BN_CTX *ctx);
> > >>
> > >> ? ? int (*bn_mod_exp) (BIGNUM *r, const BIGNUM *a, const BIGNUM
> > >> *p, const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
> > >>
> > >> ? ? int (*init) (RSA *rsa);
> > >>
> > >> ? ? int (*finish) (RSA *rsa);
> > >>
> > >> ? ? int flags;
> > >>
> > >> ? ? char *app_data;
> > >>
> > >> ? ? int (*rsa_sign) (int type, const unsigned char *m, unsigned
> > >> int m_length, unsigned char *sigret, unsigned int *siglen, const
> > >> RSA *rsa);
> > >>
> > >> ? ? int (*rsa_verify) (int dtype, const unsigned char *m, unsigned
> > >> int m_length, const unsigned char *sigbuf, unsigned int siglen,
> > >> const RSA *rsa);
> > >>
> > >> ? ? int (*rsa_keygen) (RSA *rsa, int bits, BIGNUM *e, BN_GENCB *cb);
> > >>
> > >> };
> > >> *
> > >>
> > >>
> > =================================================================================
> > >>
> > >> My sample skeleton code is here
> >
> https://clicktime.symantec.com/33X17gA39DAZvzaTx4AG8ej6H2?u=https%3A%2F%2Fpastebin.com%2FuNXYknEA
> > >> <
> >
> https://clicktime.symantec.com/33X17gA39DAZvzaTx4AG8ej6H2?u=https%3A%2F%2Fpastebin.com%2FuNXYknEA
> > >
> > >>
> > >> Can anyone please tell me what I'm I doing wrong?
> > >>
> > >> Regards,
> > >> Shariful Alam
> > >
> >
> >
> > ------------------------------
> >
> > Subject: Digest Footer
> >
> > _______________________________________________
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> >
> > End of openssl-users Digest, Vol 77, Issue 20
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> - --
> Dr Everett (Skip) Carter 0x8176163B
> skip at taygeta.com
> Taygeta Scientific Inc
> 607 Charles Ave
> Seaside CA 93955
> 831-641-0645 x103
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>
> Notice: This e-mail together with any attachments may contain information of Ribbon
> Communications Inc. and its Affiliates that is confidential and/or proprietary for the
> sole use of the intended recipient. Any review, disclosure, reliance or distribution
> by others or forwarding without express permission is strictly prohibited. If you are
> not the intended recipient, please notify the sender immediately and then delete all
> copies, including any attachments.
- --
Dr Everett (Skip) Carter 0x8176163B
skip at taygeta.com
Taygeta Scientific Inc
607 Charles Ave
Seaside CA 93955
831-641-0645 x103
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