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https://github.com/tillitis/tillitis-key1.git
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3a6a60ff26
The memset() responsible for the zeroisation of the secure_ctx under the compute_cdi() function in FW's main.c, was optimised away by the compiler. Instead of using memset(), secure_wipe() is introduced which uses a volatile keyword to prevent the compiler to try to optimise it. Secure_wipe() is now used on all locations handling removal of sensitive data.
32 lines
767 B
C
32 lines
767 B
C
/*
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* Copyright (C) 2022 - Tillitis AB
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* SPDX-License-Identifier: GPL-2.0-only
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*/
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#ifndef LIB_H
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#define LIB_H
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#include "types.h"
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#ifdef NOCONSOLE
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#define htif_putc(ch)
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#define htif_lf()
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#define htif_puthex(c)
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#define htif_putinthex(n)
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#define htif_puts(s)
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#define htif_hexdump(buf, len)
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#else
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void htif_putc(char ch);
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void htif_lf();
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void htif_puthex(uint8_t c);
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void htif_putinthex(const uint32_t n);
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void htif_puts(const char *s);
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void htif_hexdump(void *buf, int len);
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#endif
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void *memset(void *dest, int c, unsigned n);
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void memcpy_s(void *dest, size_t destsize, const void *src, size_t n);
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void wordcpy_s(void *dest, size_t destsize, const void *src, size_t n);
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int memeq(void *dest, const void *src, size_t n);
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void secure_wipe(void *v, size_t n);
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#endif
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