openssl-users Digest, Vol 98, Issue 8
Samiya Khanum
samiya.khanum at broadcom.com
Thu Feb 16 14:33:59 UTC 2023
Hi Richard,
What is the default mode used for AES_encrypt/AES_decrypt calls. Is it GCM,
ECB or something else?
Because I wanted to pass the same mode for EVP api's.
Thanks & Regards,
Samiya khanum
On Fri, Jan 6, 2023 at 7:32 PM <openssl-users-request at openssl.org> wrote:
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> 1. Re: openssl-users Digest, Vol 98, Issue 7 (Samiya Khanum)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 6 Jan 2023 19:30:54 +0530
> From: Samiya Khanum <samiya.khanum at broadcom.com>
> To: openssl-users at openssl.org, Richard Levitte <levitte at openssl.org>
> Cc: Kamlesh Agrawal <kamlesh.agrawal at broadcom.com>
> Subject: Re: openssl-users Digest, Vol 98, Issue 7
> Message-ID:
> <
> CADmX34qTqeih9QX72WsCebsZDYbeGiW74u20ujBNkNnKEb7T5w at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Hi Richard,
>
> Thanks for providing the information.
> I have one more query, please help.
>
> I have to compile an NTP application with below mentioned CFLAG to
> suppress the deprecated compilation errors, but still I see a couple of
> compilation issues.
> CFLAGSEXTRA += \
> -DOPENSSL_API_COMPAT=0x010101000L
>
> For below EVP api's, const qualifier is added in openSSL3.0 code. To fix
> these errors, I have to do type casting in many places.
> We can't use "-Wdiscarded-qualifiers" FLAG in our environment, it is not
> supported.
> Is there any other way that I can avoid this?
>
> Checking 'open'
> ../../../../vendor/ntp/util/ntp-keygen.c: In function 'main':
> ../../../../vendor/ntp/util/ntp-keygen.c:644:7: error: assignment discards
> 'const' qualifier from pointer target type [-Werror]
> rsa = EVP_PKEY_get0_RSA(pkey_gqkey);
> ^
> ../../../../vendor/ntp/util/ntp-keygen.c:665:7: error: assignment discards
> 'const' qualifier from pointer target type [-Werror]
> rsa = EVP_PKEY_get0_RSA(pkey_gqkey);
> ^
> ../../../../vendor/ntp/util/ntp-keygen.c:688:7: error: assignment discards
> 'const' qualifier from pointer target type [-Werror]
> rsa = EVP_PKEY_get0_RSA(pkey_gqkey);
> ^
> ../../../../vendor/ntp/util/ntp-keygen.c:731:7: error: assignment discards
> 'const' qualifier from pointer target type [-Werror]
> dsa = EVP_PKEY_get0_DSA(pkey_iffkey);
> ^
> ../../../../vendor/ntp/util/ntp-keygen.c:754:7: error: assignment discards
> 'const' qualifier from pointer target type [-Werror]
> dsa = EVP_PKEY_get0_DSA(pkey_iffkey);
>
>
> Thanks & Regards,
> Samiya khanum
>
>
> On Fri, Jan 6, 2023 at 5:30 PM <openssl-users-request at openssl.org> wrote:
>
> > Send openssl-users mailing list submissions to
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> > https://mta.openssl.org/mailman/listinfo/openssl-users
> > or, via email, send a message with subject or body 'help' to
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> > than "Re: Contents of openssl-users digest..."
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> > Today's Topics:
> >
> > 1. Replacement for AES_encrypt (Samiya Khanum)
> > 2. Re: Replacement for AES_encrypt (Richard Levitte)
> >
> >
> > ----------------------------------------------------------------------
> >
> > Message: 1
> > Date: Thu, 5 Jan 2023 17:42:57 +0530
> > From: Samiya Khanum <samiya.khanum at broadcom.com>
> > To: openssl-users at openssl.org
> > Cc: Kamlesh Agrawal <kamlesh.agrawal at broadcom.com>
> > Subject: Replacement for AES_encrypt
> > Message-ID:
> > <
> > CADmX34oWPfjyP5j2q2xtgqr3d3TQQtfLGME4Fk5-rLr444EJsg at mail.gmail.com>
> > Content-Type: text/plain; charset="utf-8"
> >
> > Hi All,
> >
> > We are upgrading our code to openSSL 3.0.
> >
> > I have replaced AES_set_encrypt_key and AES_encrypt
> > with EVP_CipherInit_ex, EVP_CipherUpdate and EVP_CipherFinal_ex.
> > In the below function what should be the cipher parameter(second
> argument).
> > Because in AES_encryt api, we don't mention any block cipher.
> > Is it EVP_aes_128_cbc() algorithm that we should use?
> >
> > int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx,
> > *const EVP_CIPHER *cipher,* ENGINE
> *impl,
> > const unsigned char *key,
> > const unsigned char *iv, int enc);
> >
> > Thanks & Regards,
> > Samiya khanum
> >
> > --
> > This electronic communication and the information and any files
> > transmitted
> > with it, or attached to it, are confidential and are intended solely for
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> > ------------------------------
> >
> > Message: 2
> > Date: Fri, 06 Jan 2023 08:19:33 +0100
> > From: Richard Levitte <levitte at openssl.org>
> > To: openssl-users at openssl.org, Kamlesh Agrawal
> > <kamlesh.agrawal at broadcom.com>
> > Subject: Re: Replacement for AES_encrypt
> > Message-ID: <871qo8ruyi.wl-levitte at openssl.org>
> > Content-Type: text/plain; charset=ISO-8859-1
> >
> > EVP_aes_128_cbc() is still usable to get the appropriate EVP_CIPHER
> > reference, but is regarded legacy.
> >
> > With OpenSSL 3.0 and providers, the new method to get the algorithm
> > you want is by fetching, in this case using EVP_CIPHER_fetch().
> >
> > In
> https://www.openssl.org/docs/man3.0/man7/crypto.html#FETCHING-EXAMPLES,
> > there is an example that demonstrates fetching exactly the algorithm
> > your asking for, "AES-128-CBC".
> >
> > If you want to know exactly what algorithms are available to you (by
> name),
> > 'openssl list' is your friend. For example, this command shows all
> > the default cipher algorithms:
> >
> > openssl list -cipher-algorithms
> >
> > You will notice that the output is divided into two sections,
> > "Legacy:" and "Provided:". The latter is more future proof set of
> > names.
> >
> > Cheers,
> > Richard
> >
> > On Thu, 05 Jan 2023 13:12:57 +0100,
> > Samiya Khanum via openssl-users wrote:
> > >
> > > Hi All,
> > >
> > > We are?upgrading our code to openSSL 3.0.
> > >
> > > I have?replaced? AES_set_encrypt_key? and?AES_encrypt
> > with?EVP_CipherInit_ex, EVP_CipherUpdate
> > > and?EVP_CipherFinal_ex.
> > > In the below function what should be the cipher parameter(second
> > argument). Because in AES_encryt
> > > api, we don't?mention any block cipher.?
> > > Is it?EVP_aes_128_cbc() algorithm that?we should use?
> > >
> > > int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx,
> > > ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?const EVP_CIPHER *cipher, ENGINE
> *impl,
> > > ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?const unsigned char *key,
> > > ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?const unsigned char *iv, int enc);
> > > ?
> > > Thanks & Regards,
> > > Samiya khanum
> > >
> > > This electronic communication and the information and any files
> > transmitted with it, or attached
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> > individual or entity to whom it
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> > privileged, protected by
> > > privacy laws, or otherwise restricted from disclosure to anyone else.
> If
> > you are not the intended
> > > recipient or the person responsible for delivering the e-mail to the
> > intended recipient, you are
> > > hereby notified that any use, copying, distributing, dissemination,
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> > > [2 S/MIME Cryptographic Signature <application/pkcs7-signature
> (base64)>]
> > > Good signature from 1E45BABBADAD646C644FE256D55EFC9561AABBFF /CN=Samiya
> > Khanum/O=Broadcom Inc./L=Bangalore/ST=Karnataka/C=IN/EMail=
> > samiya.khanum at broadcom.com (trust full)
> > --
> > Richard Levitte levitte at openssl.org
> > OpenSSL Project http://www.openssl.org/~levitte/
> >
> >
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