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Merge pull request #4053 from TeroJaasko/baremetal_aes_masking_speedup

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Baremetal aes masking speedup
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Shelly Liberman 2021-01-24 11:22:23 +02:00 committed by GitHub
commit f63b2283f2
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1 changed files with 3 additions and 5 deletions
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8
library/aes.c
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@ -1421,9 +1421,9 @@ int mbedtls_internal_aes_encrypt( mbedtls_aes_context *ctx,
uint8_t round_ctrl_table[( 14 + AES_SCA_CM_ROUNDS + 2 )]; uint8_t round_ctrl_table[( 14 + AES_SCA_CM_ROUNDS + 2 )];
#if defined MBEDTLS_AES_128_BIT_MASKED #if defined MBEDTLS_AES_128_BIT_MASKED
uint32_t rk_masked[MBEDTLS_AES_128_EXPANDED_KEY_SIZE_IN_WORDS] = {0}; uint32_t rk_masked[MBEDTLS_AES_128_EXPANDED_KEY_SIZE_IN_WORDS];
uint8_t sbox_masked[256] = {0}; uint8_t sbox_masked[256];
uint32_t mask[10] = {0}; uint32_t mask[10];
#endif #endif
#if defined(MBEDTLS_VALIDATE_AES_KEYS_INTEGRITY) #if defined(MBEDTLS_VALIDATE_AES_KEYS_INTEGRITY)
@ -1560,8 +1560,6 @@ int mbedtls_internal_aes_encrypt( mbedtls_aes_context *ctx,
{ {
flow_control++; flow_control++;
} }
//Cleanup the masked key
mbedtls_platform_memset( rk_masked, 0, sizeof(rk_masked) );
#else #else
aes_fround_final( aes_data_ptr->rk_ptr, aes_fround_final( aes_data_ptr->rk_ptr,
&aes_data_ptr->xy_values[0], &aes_data_ptr->xy_values[0],