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build fixes

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Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
This commit is contained in:
Dave Rodgman
2023-09-20 16:26:49 +01:00
parent c1a17f5458
commit 1d52368e85
3 changed files with 11 additions and 6 deletions
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5
library/cipher.c
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@ -798,7 +798,8 @@ static int get_one_and_zeros_padding(unsigned char *input, size_t input_len,
*data_len = (*data_len & ~hit_first_nonzero) | ((size_t) i & hit_first_nonzero);
bad = mbedtls_ct_uint_if(hit_first_nonzero, !mbedtls_ct_size_bool_eq(input[i], 0x80), bad);
bad = mbedtls_ct_uint_if((unsigned int) hit_first_nonzero,
!mbedtls_ct_size_bool_eq(input[i], 0x80), bad);
in_padding = in_padding & ~is_nonzero;
}
@ -843,7 +844,7 @@ static int get_zeros_and_len_padding(unsigned char *input, size_t input_len,
/* The number of bytes checked must be independent of padding_len */
pad_idx = input_len - padding_len;
for (i = 0; i < input_len - 1; i++) {
unsigned int mask = mbedtls_ct_size_mask_ge(i, pad_idx);
size_t mask = mbedtls_ct_size_mask_ge(i, pad_idx);
bad |= input[i] & mask;
}

6
library/constant_time.c
View File

@ -116,7 +116,8 @@ mbedtls_mpi_uint mbedtls_ct_mpi_uint_mask(mbedtls_mpi_uint value)
#endif /* MBEDTLS_BIGNUM_C */
#if defined(MBEDTLS_SSL_SOME_SUITES_USE_TLS_CBC)
#if defined(MBEDTLS_SSL_SOME_SUITES_USE_TLS_CBC) || defined(MBEDTLS_NIST_KW_C) || \
defined(MBEDTLS_CIPHER_MODE_WITH_PADDING)
/** Constant-flow mask generation for "less than" comparison:
* - if \p x < \p y, return all-bits 1, that is (size_t) -1
@ -151,7 +152,8 @@ size_t mbedtls_ct_size_mask_ge(size_t x,
return ~mbedtls_ct_size_mask_lt(x, y);
}
#endif /* MBEDTLS_SSL_SOME_SUITES_USE_TLS_CBC */
#endif /* defined(MBEDTLS_SSL_SOME_SUITES_USE_TLS_CBC) || defined(MBEDTLS_NIST_KW_C) ||
defined(MBEDTLS_CIPHER_MODE_WITH_PADDING) */
#if defined(MBEDTLS_BASE64_C)

6
library/constant_time_internal.h
View File

@ -79,7 +79,8 @@ mbedtls_mpi_uint mbedtls_ct_mpi_uint_mask(mbedtls_mpi_uint value);
#endif /* MBEDTLS_BIGNUM_C */
#if defined(MBEDTLS_SSL_SOME_SUITES_USE_TLS_CBC)
#if defined(MBEDTLS_SSL_SOME_SUITES_USE_TLS_CBC) || defined(MBEDTLS_NIST_KW_C) || \
defined(MBEDTLS_CIPHER_MODE_WITH_PADDING)
/** Constant-flow mask generation for "greater or equal" comparison:
* - if \p x >= \p y, return all-bits 1, that is (size_t) -1
@ -97,7 +98,8 @@ mbedtls_mpi_uint mbedtls_ct_mpi_uint_mask(mbedtls_mpi_uint value);
size_t mbedtls_ct_size_mask_ge(size_t x,
size_t y);
#endif /* MBEDTLS_SSL_SOME_SUITES_USE_TLS_CBC */
#endif /* defined(MBEDTLS_SSL_SOME_SUITES_USE_TLS_CBC) || defined(MBEDTLS_NIST_KW_C) ||
defined(MBEDTLS_CIPHER_MODE_WITH_PADDING) */
/** Constant-flow boolean "equal" comparison:
* return x == y