Rename sphincs algs to follow upstream #6576

iyanmv · 2023-07-05T15:59:35Z

Description

liboqs 0.8 renamed sphincs-shake256-X to sphincs-shake-X.

Testing

I tried to compile wolfSSL with --with-liboqs and it failed. After these changes, it compiles again.

Checklist

added tests
updated/added doxygen
updated appropriate READMEs
Updated manual and documentation

wolfSSL-Bot · 2023-07-05T16:00:05Z

Can one of the admins verify this patch?

iyanmv · 2023-07-05T16:04:39Z

I cannot compile with cmake (passing -DWOLFSSL_OQS=ON), so perhaps I missed something else. Will have another look later today.

anhu · 2023-07-05T16:34:09Z

Hi @iyanmv ,

Thank you so much for creating this pull request. I must admit to having lost track of liboqs updates. Its great news that they have had a new release.

Can I ask you about your project and what you are doing with wolfSSL and liboqs?

I've had a look at your changes and they look fine to me! Before we can continue with the process, we will need you sign a contributor agreement. Would you be willing to read over and sign the contributor agreement?

If so, please send a message to support@wolfssl.com requesting to become a wolfSSL contributor. Please also reference this PR in your message to support@wolfssl.com

Warm regards, Anthony

anhu · 2023-07-05T16:35:08Z

By the way, I don't think wolfSSL library's cmake infrastructure supports -DWOLFSSL_OQS=ON .

anhu · 2023-07-05T16:45:56Z

Oh, my colleague has corrected me. We do have it in there. I apologize for misleading you.

iyanmv · 2023-07-05T18:04:22Z

Hi @anhu

Thank you so much for creating this pull request. I must admit to having lost track of liboqs updates. Its great news that they have had a new release.

Can I ask you about your project and what you are doing with wolfSSL and liboqs?

I'm running some benchmarks using the NIST PQC candidates, and I learned about wolfSSL from this paper. I was curious so I wanted to try to replicate some of their results.

I've had a look at your changes and they look fine to me! Before we can continue with the process, we will need you sign a contributor agreement. Would you be willing to read over and sign the contributor agreement?

If so, please send a message to support@wolfssl.com requesting to become a wolfSSL contributor. Please also reference this PR in your message to support@wolfssl.com

Alright! I will send the email now.

anhu · 2023-07-05T18:41:05Z

Hi @iyanmv ,

Ah, yes, I know the authors of that paper quite well.

You might be interested in our integration with the PQM4 library on STM32. You can have a look here:

https://github.com/wolfSSL/wolfssl-examples/tree/master/pq/stm32

If visuals are better for you, please have a look at this YouTube video that talk about it in depth:

https://www.youtube.com/watch?v=OK6MKXYiVBY

Warm regards, Anthony

embhorn · 2023-07-07T14:48:16Z

@iyanmv has been approved as a wolfSSL contributor

anhu

I have tested this change and it works great!!

anhu · 2023-07-07T16:02:24Z

Oooh. Just ran wolfcrypt/benchmark/benchmark and verification fails:

wc_sphincs_verify_msg failed -229, verify 0

anhu

verification failures. See previous comments.

iyanmv · 2023-07-07T19:02:50Z

~~Falcon also fails, not only sphincs~~. Let me have a look.

iyanmv · 2023-07-10T11:24:36Z

I think verification fails because the keys saved and defined in certs_test.h that are used for the benchmark are incompatible with the latest implementation of SPHINCS+ by the PQClean, which was updated in this PR in liboqs.

If you point me in the right direction (maybe you have a script to generate those keys?) I can update certs/sphincs/ and wolfssl/certs_test.h in this PR.

I quickly tried replacing one with this small program:

#include<oqs/oqs.h>

void cleanup_heap(uint8_t *public_key, uint8_t *secret_key, OQS_SIG *sig)
{
    if (sig != NULL) {
        OQS_MEM_secure_free(secret_key, sig->length_secret_key);
    }
    OQS_MEM_insecure_free(public_key);
    OQS_SIG_free(sig);
}

int create_keys(const char *method_name)
{
    OQS_SIG *sig = NULL;
    uint8_t *public_key = NULL;
    uint8_t *secret_key = NULL;
    OQS_STATUS rc;

    sig = OQS_SIG_new(method_name);
    if (sig == NULL) {
        fprintf(stderr, "OQS_SIG_new failed!\n");
        return OQS_ERROR;
    }

    public_key = malloc(sig->length_public_key);
    secret_key = malloc(sig->length_secret_key);
    if ((public_key == NULL) || (secret_key == NULL)) {
        fprintf(stderr, "ERROR: malloc failed!\n");
        cleanup_heap(public_key, secret_key, sig);
        return OQS_ERROR;
    }

    rc = OQS_SIG_keypair(sig, public_key, secret_key);
    if (rc != OQS_SUCCESS) {
        fprintf(stderr, "ERROR: OQS_SIG_keypair failed!\n");
        cleanup_heap(public_key, secret_key, sig);
        return OQS_ERROR;
    }

    printf("Key:\n");
    for (size_t i=0; i<sig->length_secret_key; ++i) {
        printf("0x%02X, ", secret_key[i]);
    }
    for (size_t i=0; i<sig->length_public_key; ++i) {
       printf("0x%02X, ", public_key[i]);
    }
    printf("\n");

    printf("%s keypair generation succeeded!\n", method_name);
    cleanup_heap(public_key, secret_key, sig);
    return OQS_SUCCESS;
}


int main()
{
    OQS_STATUS ret;
    ret = create_keys("SPHINCS+-SHAKE-128f-simple");
    if (ret != OQS_SUCCESS) {
        fprintf(stderr, "ERROR!\n");
        return EXIT_FAILURE;
    }

    return EXIT_SUCCESS;
}

But now I get a wc_sphincs_import_private_key failed -140.

iyanmv · 2023-07-10T11:39:54Z

Oh, I think I understood now. wc_sphincs_import_private_key does not expect the keys directly but it should be in DER. And the wolfssl/certs_test.h probably you generated with xxd -i -c 10?

I will include new keys in this PR in a bit.

iyanmv · 2023-07-10T12:49:55Z

Why aren't there any methods in the WOLFSSL_API to generate key pairs? Something like

WOLFSSL_API
int wc_sphincs_generate_key(sphincs_key* key);

(Sorry if this is a stupid question, I'm not familiar with wolfSSL. Are users supposed to generate keys with other libraries?)

anhu · 2023-07-10T15:23:27Z

Hi @iyanmv ,

Why aren't there any methods in the WOLFSSL_API to generate key pairs?

Its not a stupid question at all. Generally, for signature schemes we use OQS's fork of OpenSSL to generate the certificates.

Please see this script: https://github.com/wolfSSL/osp/blob/master/oqs/generate_sphincs_chains.sh

The main reason is that no one has requested generation as a feature yet.

Warm regards, Anthony

iyanmv · 2023-07-10T15:34:19Z

Please see this script: https://github.com/wolfSSL/osp/blob/master/oqs/generate_sphincs_chains.sh

Oh! That would have been so useful. I guess I did a similar thing, but using OpenSSL 3 and the oqs-provider instead of the OQS OpenSSL 1.1.1 fork. But I also had to manually enable some algs and re-run the generate.py script.

The main reason is that no one has requested generation as a feature yet.

I see. I have implemented a quick function in this branch. If you think it makes sense, I can open a new PR and work on it after we are done with this. I don't think it would take a lot of time. Also, I guess it would help me to get more familiar with wolfSSL.

Cheers

anhu · 2023-07-10T16:16:25Z

Thank you for this:

8f5692d

It was a copy and paste failure on my part!

anhu

Took it for a spin and things look good to me!! Can you please squash all your commits and then do a force push? After that I will assign to one more member of our engineering team for final review and merge.

This also adds new keys for SPHINCS+. The reason is that SPHINCS+ was updated to 3.1 in liboqs (open-quantum-safe/liboqs/pull/1420), and old keys are incompatible with the new implementation. Keys were generated using the oqs-provider for OpenSSL 3 openssl genpkey \ -provider default -provider oqsprovider \ -algorithm sphincsshake128fsimple \ -outform der \ -out bench_sphincs_fast_level1_key.der And certs_test.h was updated using xxd xxd -i -c 10 -u bench_sphincs_fast_level1_key.der This was repeated for the 6 variants of SPHINCS+ that wolfSSL supports.

anhu · 2023-07-10T17:24:04Z

Hi @iyanmv , I will now assign this ticket to @dgarske for final review and merge.

wolfssl/certs_test.h

dgarske · 2023-07-10T17:34:11Z

wolfssl/certs_test.h

-        0xCC, 0xF4, 0x2F, 0xF2, 0xAC, 0x74, 0xDF, 0x0E, 0x20, 0x9D,
-        0xC2, 0x9E, 0xD1, 0xB4, 0x12
+        0X30, 0X71, 0X02, 0X01, 0X00, 0X30, 0X08, 0X06, 0X06, 0X2B,
+        0XCE, 0X0F, 0X06, 0X07, 0X0D, 0X04, 0X62, 0X04, 0X60, 0XD8,


Why did these keys change? Seems like a change to Shake would not require the test keys to change?

To be honest, I have no idea. But I can replicate the issue using liboqs 0.7.2 to generate some keys, and then trying to verify with liboqs 0.8.0.

dgarske

Thanks. @anhu please review the reason for the test key change.

dgarske · 2023-07-10T17:55:54Z

OK to test

anhu · 2023-07-10T18:04:04Z

Apparently there was a change/update to the round 3 submission.
Original Round 3 submission: https://sphincs.org/data/sphincs+-round3-specification.pdf
2022-06-10 update to the Round 3 submission: https://sphincs.org/data/sphincs+-r3.1-specification.pdf

iyanmv · 2023-07-10T18:13:50Z

@anhu I forgot to squash the last commit with the suggested change. Should I do it or wait until checks are completed?

anhu · 2023-07-10T18:16:20Z

@iyanmv ,

I think no action is required from you. a single extra commit is fine.
Warm regards, Anthony

dgarske · 2023-07-10T20:29:57Z

Retest this please

dgarske · 2023-07-10T21:49:08Z

Our liboqs CI test is failing now. @anhu or @bandi13 seems like we will need to update the liboqs version in our CI to get this to pass then merge?

In file included from wolfcrypt/benchmark/benchmark.c:172:
./wolfssl/wolfcrypt/sphincs.h:70:37: error: ‘OQS_SIG_sphincs_shake_256f_simple_length_public_key’ undeclared here (not in a function); did you mean ‘OQS_SIG_sphincs_sha256_256f_simple_length_public_key’?
   70 | #define SPHINCS_LEVEL5_PUB_KEY_SIZE OQS_SIG_sphincs_shake_256f_simple_length_public_key
      |                                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
./wolfssl/wolfcrypt/sphincs.h:70:37: note: in definition of macro ‘SPHINCS_LEVEL5_PUB_KEY_SIZE’
   70 | #define SPHINCS_LEVEL5_PUB_KEY_SIZE OQS_SIG_sphincs_shake_256f_simple_length_public_key
      |                                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
./wolfssl/wolfcrypt/sphincs.h:89:12: note: in expansion of macro ‘SPHINCS_MAX_PUB_KEY_SIZE’
   89 |     byte p[SPHINCS_MAX_PUB_KEY_SIZE];
      |            ^~~~~~~~~~~~~~~~~~~~~~~~
./wolfssl/wolfcrypt/sphincs.h:69:37: error: ‘OQS_SIG_sphincs_shake_256f_simple_length_secret_key’ undeclared here (not in a function); did you mean ‘OQS_SIG_sphincs_sha256_256f_simple_length_secret_key’?
   69 | #define SPHINCS_LEVEL5_KEY_SIZE     OQS_SIG_sphincs_shake_256f_simple_length_secret_key
      |                                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
./wolfssl/wolfcrypt/sphincs.h:69:37: note: in definition of macro ‘SPHINCS_LEVEL5_KEY_SIZE’
   69 | #define SPHINCS_LEVEL5_KEY_SIZE     OQS_SIG_sphincs_shake_256f_simple_length_secret_key
      |                                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
...

anhu · 2023-07-11T14:50:35Z

Jenkins retest this please.

iyanmv · 2023-07-11T15:05:43Z

I cannot compile with cmake (passing -DWOLFSSL_OQS=ON), so perhaps I missed something else. Will have another look later today.

Regarding this. Is this tested in the CI pipeline? If so, how is it done? I'm trying to run this (basically just the PKGBUILD from Arch Linux modified with -DWOLFSSL_OQS=ON)

build() {
    local cmake_options=(
        -DCMAKE_INSTALL_PREFIX=/usr
        -DCMAKE_BUILD_TYPE=None
        -DWOLFSSL_CURVE25519=ON
        -DWOLFSSL_CURVE448=ON
        -DWOLFSSL_ED25519=ON
        -DWOLFSSL_ED448=ON
        -DWOLFSSL_REPRODUCIBLE_BUILD=ON
        -DWOLFSSL_OQS=ON
        -DWARNING_C_FLAGS="$CFLAGS"
        -Wno-dev
        -B build
        -S $_pkgname-$pkgver-stable
    )

    cmake "${cmake_options[@]}"
    cmake --build build --verbose
}

But I get multiple undefined reference errors.

/usr/bin/ld: libwolfssl.so.35.5.1: undefined reference to `wc_KyberKey_Init'
/usr/bin/ld: libwolfssl.so.35.5.1: undefined reference to `wc_KyberKey_DecodePublicKey'
/usr/bin/ld: libwolfssl.so.35.5.1: undefined reference to `wc_dilithium_verify_msg'
/usr/bin/ld: libwolfssl.so.35.5.1: undefined reference to `wc_KyberKey_CipherTextSize'
/usr/bin/ld: libwolfssl.so.35.5.1: undefined reference to `wc_Dilithium_PrivateKeyDecode'
/usr/bin/ld: libwolfssl.so.35.5.1: undefined reference to `wc_sphincs_import_public'
/usr/bin/ld: libwolfssl.so.35.5.1: undefined reference to `wc_sphincs_init'
/usr/bin/ld: libwolfssl.so.35.5.1: undefined reference to `wc_sphincs_verify_msg'
/usr/bin/ld: libwolfssl.so.35.5.1: undefined reference to `wc_dilithium_get_level'
/usr/bin/ld: libwolfssl.so.35.5.1: undefined reference to `wc_KyberKey_PublicKeySize'
/usr/bin/ld: libwolfssl.so.35.5.1: undefined reference to `wc_KyberKey_Free'
/usr/bin/ld: libwolfssl.so.35.5.1: undefined reference to `wc_dilithium_import_private_only'
/usr/bin/ld: libwolfssl.so.35.5.1: undefined reference to `wc_dilithium_free'
/usr/bin/ld: libwolfssl.so.35.5.1: undefined reference to `ext_kyber_enabled'
/usr/bin/ld: libwolfssl.so.35.5.1: undefined reference to `wc_KyberKey_Decapsulate'
/usr/bin/ld: libwolfssl.so.35.5.1: undefined reference to `wc_dilithium_set_level'
/usr/bin/ld: libwolfssl.so.35.5.1: undefined reference to `wc_KyberKey_SharedSecretSize'
/usr/bin/ld: libwolfssl.so.35.5.1: undefined reference to `wc_dilithium_sign_msg'
/usr/bin/ld: libwolfssl.so.35.5.1: undefined reference to `wc_dilithium_import_public'
/usr/bin/ld: libwolfssl.so.35.5.1: undefined reference to `wc_dilithium_check_key'
/usr/bin/ld: libwolfssl.so.35.5.1: undefined reference to `wc_dilithium_init'
/usr/bin/ld: libwolfssl.so.35.5.1: undefined reference to `wc_sphincs_check_key'
/usr/bin/ld: libwolfssl.so.35.5.1: undefined reference to `wc_KyberKey_PrivateKeySize'
/usr/bin/ld: libwolfssl.so.35.5.1: undefined reference to `wc_sphincs_free'
/usr/bin/ld: libwolfssl.so.35.5.1: undefined reference to `wc_KyberKey_EncodePublicKey'
/usr/bin/ld: libwolfssl.so.35.5.1: undefined reference to `wc_KyberKey_DecodePrivateKey'
/usr/bin/ld: libwolfssl.so.35.5.1: undefined reference to `wc_sphincs_set_level_and_optim'
/usr/bin/ld: libwolfssl.so.35.5.1: undefined reference to `wc_KyberKey_Encapsulate'
/usr/bin/ld: libwolfssl.so.35.5.1: undefined reference to `wc_KyberKey_MakeKey'
/usr/bin/ld: libwolfssl.so.35.5.1: undefined reference to `wc_Sphincs_PrivateKeyDecode'
/usr/bin/ld: libwolfssl.so.35.5.1: undefined reference to `wc_KyberKey_EncodePrivateKey'

iyanmv · 2023-07-11T15:42:14Z

I think some logic is missing in cmake/functions.cmake. Having a quick look when this functionality was originally added to CMake (#5407), I tried adding some extra list(APPEND LIB_SOURCES ...). Here is my diff that makes previous command work.

diff --git a/cmake/functions.cmake b/cmake/functions.cmake
index e77991ea1..f0fc48c2e 100644
--- a/cmake/functions.cmake
+++ b/cmake/functions.cmake
@@ -195,6 +195,9 @@ function(generate_build_flags)
     endif()
     if(WOLFSSL_OQS OR WOLFSSL_USER_SETTINGS)
         set(BUILD_FALCON "yes" PARENT_SCOPE)
+        set(BUILD_SPHINCS "yes" PARENT_SCOPE)
+        set(BUILD_DILITHIUM "yes" PARENT_SCOPE)
+        set(BUILD_EXT_KYBER "yes" PARENT_SCOPE)
     endif()
     set(BUILD_INLINE ${WOLFSSL_INLINE} PARENT_SCOPE)
     if(WOLFSSL_OCSP OR WOLFSSL_USER_SETTINGS)
@@ -804,6 +807,18 @@ function(generate_lib_src_list LIB_SOURCES)
               list(APPEND LIB_SOURCES wolfcrypt/src/falcon.c)
          endif()
 
+         if(BUILD_SPHINCS)
+              list(APPEND LIB_SOURCES wolfcrypt/src/sphincs.c)
+         endif()
+
+         if(BUILD_DILITHIUM)
+              list(APPEND LIB_SOURCES wolfcrypt/src/dilithium.c)
+         endif()
+
+         if(BUILD_EXT_KYBER)
+              list(APPEND LIB_SOURCES wolfcrypt/src/ext_kyber.c)
+         endif()
+
          if(BUILD_LIBZ)
               list(APPEND LIB_SOURCES wolfcrypt/src/compress.c)
          endif()

anhu · 2023-07-11T15:52:50Z

@iyanmv ,

Ha! You beat me to it. I just noticed that the list of files being built did not include the post-quantum algorithm files.
Thanks for the patch above. Can you add it to this PR?

Anthony

wolfSSLGH-5407 already included falcon.c, but now we also add sphincs.c, dilithium.c and ext_kyber.c to avoid undefined reference errors.

iyanmv · 2023-07-11T15:58:57Z

Ha! You beat me to it. I just noticed that the list of files being built did not include the post-quantum algorithm files. Thanks for the patch above. Can you add it to this PR?

Sure! Will do in a minute.

embhorn assigned anhu Jul 5, 2023

embhorn requested a review from anhu July 7, 2023 14:48

anhu approved these changes Jul 7, 2023

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anhu self-requested a review July 7, 2023 16:02

anhu requested changes Jul 7, 2023

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iyanmv requested a review from anhu July 10, 2023 14:07

anhu previously approved these changes Jul 10, 2023

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iyanmv force-pushed the liboqs-1.8 branch from 8f5692d to d3ba8a6 Compare July 10, 2023 16:27

iyanmv force-pushed the liboqs-1.8 branch from d3ba8a6 to 7c14ea6 Compare July 10, 2023 16:32

anhu assigned dgarske Jul 10, 2023

anhu requested a review from dgarske July 10, 2023 17:24

dgarske requested changes Jul 10, 2023

View reviewed changes

Fix format keys

d64d73a

iyanmv dismissed anhu’s stale review via d64d73a July 10, 2023 17:47

dgarske previously approved these changes Jul 10, 2023

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anhu self-requested a review July 10, 2023 20:20

anhu previously approved these changes Jul 10, 2023

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dgarske assigned dgarske and unassigned anhu and iyanmv Jul 10, 2023

dgarske assigned anhu and bandi13 and unassigned dgarske Jul 10, 2023

Include all post-quantum algorithm files in cmake

fd091a7

wolfSSLGH-5407 already included falcon.c, but now we also add sphincs.c, dilithium.c and ext_kyber.c to avoid undefined reference errors.

iyanmv dismissed stale reviews from anhu and dgarske via fd091a7 July 11, 2023 16:03

anhu self-requested a review July 11, 2023 18:27

anhu approved these changes Jul 11, 2023

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anhu merged commit 0b18e25 into wolfSSL:master Jul 11, 2023

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Add cargo deny to audit licenses of dependencies expressvpn/wolfssl-sys#40

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Rename sphincs algs to follow upstream #6576

Rename sphincs algs to follow upstream #6576

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Rename sphincs algs to follow upstream #6576

Rename sphincs algs to follow upstream #6576

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