diff options
Diffstat (limited to 'include/internal')
-rw-r--r-- | include/internal/constant_time_locl.h | 91 |
1 files changed, 51 insertions, 40 deletions
diff --git a/include/internal/constant_time_locl.h b/include/internal/constant_time_locl.h index c786aea949..8269a328f7 100644 --- a/include/internal/constant_time_locl.h +++ b/include/internal/constant_time_locl.h @@ -47,7 +47,7 @@ #ifndef HEADER_CONSTANT_TIME_LOCL_H # define HEADER_CONSTANT_TIME_LOCL_H -# include "e_os.h" /* For 'inline' */ +# include <openssl/e_os2.h> /* For 'ossl_inline' */ #ifdef __cplusplus extern "C" { @@ -76,42 +76,45 @@ extern "C" { * However, this is not ensured by the C standard so you may need to * replace this with something else on odd CPUs. */ -static inline unsigned int constant_time_msb(unsigned int a); +static ossl_inline unsigned int constant_time_msb(unsigned int a); /* * Returns 0xff..f if a < b and 0 otherwise. */ -static inline unsigned int constant_time_lt(unsigned int a, unsigned int b); +static ossl_inline unsigned int constant_time_lt(unsigned int a, + unsigned int b); /* Convenience method for getting an 8-bit mask. */ -static inline unsigned char constant_time_lt_8(unsigned int a, - unsigned int b); +static ossl_inline unsigned char constant_time_lt_8(unsigned int a, + unsigned int b); /* * Returns 0xff..f if a >= b and 0 otherwise. */ -static inline unsigned int constant_time_ge(unsigned int a, unsigned int b); +static ossl_inline unsigned int constant_time_ge(unsigned int a, + unsigned int b); /* Convenience method for getting an 8-bit mask. */ -static inline unsigned char constant_time_ge_8(unsigned int a, - unsigned int b); +static ossl_inline unsigned char constant_time_ge_8(unsigned int a, + unsigned int b); /* * Returns 0xff..f if a == 0 and 0 otherwise. */ -static inline unsigned int constant_time_is_zero(unsigned int a); +static ossl_inline unsigned int constant_time_is_zero(unsigned int a); /* Convenience method for getting an 8-bit mask. */ -static inline unsigned char constant_time_is_zero_8(unsigned int a); +static ossl_inline unsigned char constant_time_is_zero_8(unsigned int a); /* * Returns 0xff..f if a == b and 0 otherwise. */ -static inline unsigned int constant_time_eq(unsigned int a, unsigned int b); +static ossl_inline unsigned int constant_time_eq(unsigned int a, + unsigned int b); /* Convenience method for getting an 8-bit mask. */ -static inline unsigned char constant_time_eq_8(unsigned int a, - unsigned int b); +static ossl_inline unsigned char constant_time_eq_8(unsigned int a, + unsigned int b); /* Signed integers. */ -static inline unsigned int constant_time_eq_int(int a, int b); +static ossl_inline unsigned int constant_time_eq_int(int a, int b); /* Convenience method for getting an 8-bit mask. */ -static inline unsigned char constant_time_eq_int_8(int a, int b); +static ossl_inline unsigned char constant_time_eq_int_8(int a, int b); /*- * Returns (mask & a) | (~mask & b). @@ -120,86 +123,94 @@ static inline unsigned char constant_time_eq_int_8(int a, int b); * the select methods return either |a| (if |mask| is nonzero) or |b| * (if |mask| is zero). */ -static inline unsigned int constant_time_select(unsigned int mask, - unsigned int a, - unsigned int b); +static ossl_inline unsigned int constant_time_select(unsigned int mask, + unsigned int a, + unsigned int b); /* Convenience method for unsigned chars. */ -static inline unsigned char constant_time_select_8(unsigned char mask, - unsigned char a, - unsigned char b); +static ossl_inline unsigned char constant_time_select_8(unsigned char mask, + unsigned char a, + unsigned char b); /* Convenience method for signed integers. */ -static inline int constant_time_select_int(unsigned int mask, int a, int b); +static ossl_inline int constant_time_select_int(unsigned int mask, int a, + int b); -static inline unsigned int constant_time_msb(unsigned int a) +static ossl_inline unsigned int constant_time_msb(unsigned int a) { return 0 - (a >> (sizeof(a) * 8 - 1)); } -static inline unsigned int constant_time_lt(unsigned int a, unsigned int b) +static ossl_inline unsigned int constant_time_lt(unsigned int a, + unsigned int b) { return constant_time_msb(a ^ ((a ^ b) | ((a - b) ^ b))); } -static inline unsigned char constant_time_lt_8(unsigned int a, unsigned int b) +static ossl_inline unsigned char constant_time_lt_8(unsigned int a, + unsigned int b) { return (unsigned char)(constant_time_lt(a, b)); } -static inline unsigned int constant_time_ge(unsigned int a, unsigned int b) +static ossl_inline unsigned int constant_time_ge(unsigned int a, + unsigned int b) { return ~constant_time_lt(a, b); } -static inline unsigned char constant_time_ge_8(unsigned int a, unsigned int b) +static ossl_inline unsigned char constant_time_ge_8(unsigned int a, + unsigned int b) { return (unsigned char)(constant_time_ge(a, b)); } -static inline unsigned int constant_time_is_zero(unsigned int a) +static ossl_inline unsigned int constant_time_is_zero(unsigned int a) { return constant_time_msb(~a & (a - 1)); } -static inline unsigned char constant_time_is_zero_8(unsigned int a) +static ossl_inline unsigned char constant_time_is_zero_8(unsigned int a) { return (unsigned char)(constant_time_is_zero(a)); } -static inline unsigned int constant_time_eq(unsigned int a, unsigned int b) +static ossl_inline unsigned int constant_time_eq(unsigned int a, + unsigned int b) { return constant_time_is_zero(a ^ b); } -static inline unsigned char constant_time_eq_8(unsigned int a, unsigned int b) +static ossl_inline unsigned char constant_time_eq_8(unsigned int a, + unsigned int b) { return (unsigned char)(constant_time_eq(a, b)); } -static inline unsigned int constant_time_eq_int(int a, int b) +static ossl_inline unsigned int constant_time_eq_int(int a, int b) { return constant_time_eq((unsigned)(a), (unsigned)(b)); } -static inline unsigned char constant_time_eq_int_8(int a, int b) +static ossl_inline unsigned char constant_time_eq_int_8(int a, int b) { return constant_time_eq_8((unsigned)(a), (unsigned)(b)); } -static inline unsigned int constant_time_select(unsigned int mask, - unsigned int a, - unsigned int b) +static ossl_inline unsigned int constant_time_select(unsigned int mask, + unsigned int a, + unsigned int b) { return (mask & a) | (~mask & b); } -static inline unsigned char constant_time_select_8(unsigned char mask, - unsigned char a, - unsigned char b) +static ossl_inline unsigned char constant_time_select_8(unsigned char mask, + unsigned char a, + unsigned char b) { return (unsigned char)(constant_time_select(mask, a, b)); } -static inline int constant_time_select_int(unsigned int mask, int a, int b) +static ossl_inline int constant_time_select_int(unsigned int mask, int a, + int b) { return (int)(constant_time_select(mask, (unsigned)(a), (unsigned)(b))); } |