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Add PIN attempt limiting with PBKDF2 key stretching #135

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Add PIN attempt limiting with PBKDF2 key stretching #135

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f7a88be
Add PIN attempt limiting with PBKDF2 key stretching
wksantiago Jan 23, 2026
21db677
Fix HMAC key source, rate limit reboot bypass, and delay schedule
wksantiago Jan 24, 2026
df32a34
Fix 64-bit overflow, HMAC error propagation, and clang-format
wksantiago Jan 24, 2026
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4 changes: 4 additions & 0 deletions components/crypto_asm/include/crypto_asm.h
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Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,10 @@ uint32_t ct_select32(uint32_t a, uint32_t b, uint32_t condition);
void ct_select_bytes(void *out, const void *a, const void *b, size_t len, uint32_t condition);
void ct_cswap32(uint32_t *a, uint32_t *b, uint32_t condition);

static inline int secure_memcmp(const void *a, const void *b, size_t len) {
return ct_compare(a, b, len);
}

#ifdef __cplusplus
}
#endif
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