About jschoi0126

jschoi0126 · 2025-02-13

Hello, I am currently developing with SPC5Studio 6.0.0.In my project, I need the HighTec Pro option, so I downloaded the license and tool chain files from http://register.hightec-rt.com/st/spc5x.I placed the license file in both:- C:\SPC5Studio-6.0\l...

jschoi0126 · 2024-08-07

I am currently developing with SPC5STUDIO and want to verify a signed message using ECDSA.To do this, I am studying the example in ecc.h.When I ran the example code:retval = ECCinitEC(&ECparams, &mb);retval = ECCinitPoint(&G, &ECparams, &mb);retval ...

jschoi0126 · 2024-08-20

This is my test code for ECDSA. Thank you. void ECDSA_Verfiy_Msg_2(void) { const uint8_t ecc_256_a[]={0xff,0xff,0xff,0xff,0x00,0x00,0x00,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0x...

jschoi0126 · 2024-08-20

Based on my analysis, it seems that data should be loaded from the memory space at R27 + 0xC, but since R27 contains "0x00000008" it results in accessing an invalid memory location, causing a crash. I suspect that this issue might be due to a stack o...

jschoi0126 · 2024-08-20

Thank you for your response. I have identified the exact point in the code where the crash occurs. The crash happens when the code at address "0x00FC7902" within the "MontyJacProjAddPoints" function is executed. At that moment, I have captured the co...

jschoi0126 · 2024-08-19

If it turns out to be a stack memory overflow, would it be necessary to replace the current chip, which is the SPC58EC80E1, with a different one? Could you recommend any alternative chips?

jschoi0126 · 2024-08-19

Thank you very much for your response. Following your advice, I used a debugger tool to check the R13, R14, and PC registers. The strange thing is that even though function calls are continuously made, the value of the R13 register remains fixed at "...

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SPC5Studio Hightec pro license import problem

SPC58EC CRYPTO SW Crypto Libs for ECC signature, sign verify

Re: SPC58EC CRYPTO SW Crypto Libs for ECC signature, sign verify

Re: SPC58EC CRYPTO SW Crypto Libs for ECC signature, sign verify

Re: SPC58EC CRYPTO SW Crypto Libs for ECC signature, sign verify

Re: SPC58EC CRYPTO SW Crypto Libs for ECC signature, sign verify

Re: SPC58EC CRYPTO SW Crypto Libs for ECC signature, sign verify