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M467: Disable SCAP in RSA H/W 

This is to follow designer's resolution.
pull/15337/head
Chun-Chieh Li 2022-06-01 15:23:45 +08:00
parent 087daeacee
commit 196d10662e
1 changed files with 4 additions and 0 deletions
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4
connectivity/drivers/mbedtls/TARGET_NUVOTON/TARGET_M460/rsa/crypto_rsa_hw.c
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@ -50,6 +50,7 @@
* 1. For non-CRT+SCAP (excluding CRT+SCAP) mode, DMA buffer for MADDR6 must be key length plus 128 bits. * 1. For non-CRT+SCAP (excluding CRT+SCAP) mode, DMA buffer for MADDR6 must be key length plus 128 bits.
* 2. DMA buffer must be 4-word aligned, or RSA H/W will trap. * 2. DMA buffer must be 4-word aligned, or RSA H/W will trap.
* 3. CRT is not well-tested yet, esp with 4096 key bits. * 3. CRT is not well-tested yet, esp with 4096 key bits.
* 4. Following designer's resolution, disable SCAP.
*/ */
/* RSA context for DMA */ /* RSA context for DMA */
@ -224,6 +225,9 @@ int crypto_rsa_crypt(mbedtls_rsa_context *ctx,
size_t olen; size_t olen;
uint32_t keybits; uint32_t keybits;
/* NOTE: Check above RSA H/W comment for disabling blinding */
blinding = false;
#if defined(NU_CRYPTO_RSA_ENABLE_DEBUG) #if defined(NU_CRYPTO_RSA_ENABLE_DEBUG)
mbedtls_printf("[CRPT][RSA] decrypt=%d, crt=%d, blinding=%d\n", decrypt, crt, blinding); mbedtls_printf("[CRPT][RSA] decrypt=%d, crt=%d, blinding=%d\n", decrypt, crt, blinding);
#endif #endif