1 Reply by yinzixuansz

(9 replies, posted in wolfCrypt)

Hi,

I was able to get RSA working by 1. increasing the stack/heap by customizing the memmap_custom.ld and linking it and 2. removing the following code from my CMakeList (this is from the RPI-Pico example repository):

if (${PICO_PLATFORM} STREQUAL "rp2350")
    add_compile_definitions(wolfssl WOLFSSL_SP_ARM_CORTEX_M_ASM)
elseif (${PICO_PLATFORM} STREQUAL "rp2350-riscv")
    add_compile_definitions(wolfSSL WOLFSSL_SP_RISCV32)
else()
    add_compile_definitions(wolfssl WOLFSSL_SP_ARM_THUMB_ASM)
endif()

The above code is right before:

pico_add_extra_outputs(benchmark)

in the Benchmark wolfCrypt algorithms section.

Thank you all for your help.

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2 Reply by yinzixuansz

(9 replies, posted in wolfCrypt)

Hi Andrew,

I am using Pico SDK 2.2.0
For cmake, I am using "cmake -DPICO_BOARD=pico2_w -DPICO_PLATFORM=rp2350 .."

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3 Reply by yinzixuansz

(9 replies, posted in wolfCrypt)

Hello Andrew,

Thanks for the reply; I've cloned the wolfssl-examples repository and ran the benchmark tests with the config settings that you suggested, but it seems to still stop at RSA. Please let me know what I can do to fix this issue. I'm currently looking into ways to redefine heap/stack memory for the Pico 2W, but it seems like there's very little documentation on that.

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4 Reply by yinzixuansz

(9 replies, posted in wolfCrypt)

Hi David,

Thanks for the reply. For now, I'm trying to replicate the benchmark results at the link below, but it seems that I get stuck at RSA, I'm not sure why.
Additionally, are you aware whether it's possible to use ML_DSA on the Pico? Thanks.

https://www.wolfssl.com/a-slice-of-secu … y-pi-pico/

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5 Topic by yinzixuansz

(9 replies, posted in wolfCrypt)

Hi all,

I have been trying to implement RSA on the Raspberry Pi Pico 2W RP2350 microcontroller with the Dual Cortex-M33 processor. However, I am getting stuck at wc_MakeRsaKey

RsaKey priv;
WC_RNG rng;
int ret = 0;
long e = 65537; // standard value to use for exponent

ret = wc_InitRsaKey(&priv, NULL);
printf("wc_InitRsaKey ret: %d\n", ret);
ret = wc_InitRng(&rng);
printf("wc_InitRng ret: %d\n", ret);
ret = wc_RsaSetRNG(&priv, &rng);
printf("wc_RsaSetRNG ret: %d\n", ret);
// generate 2048 bit long private key
ret = wc_MakeRsaKey(&priv, 2048, e, &rng);
printf("wc_MakeRsaKey ret: %d\n", ret);

I have tried the benchmark tests and have been unable to replicate the results at https://www.wolfssl.com/docs/benchmarks/
The platform that WolfSSL tested with is slightly different:
Raspberry Pi Pico-W
ARM Cortext M0+, 125MHz
When trying to run to run bench_main from the example repository in WolfSSL:
https://github.com/wolfSSL/wolfssl-exam … nch_main.c
The code gets stuck at RSA.


I saw a blog post here related to this issue:
https://www.wolfssl.com/forums/topic125 … stops.html

However, I am unsure if this is the issue and, if so, how to resolve it for my Pico 2W. Any help is appreciated.

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