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Make NIST curves optimisation an option

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Manuel Pégourié-Gonnard 2013-10-23 16:11:52 +02:00
parent 0f9149cb0a
commit c04c530a98
2 changed files with 25 additions and 0 deletions
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11
include/polarssl/config.h
View file

@ -259,6 +259,17 @@
#define POLARSSL_ECP_DP_BP384R1_ENABLED
#define POLARSSL_ECP_DP_BP512R1_ENABLED
/**
* \def POLARSSL_ECP_NIST_OPTIM
*
* Enable specific 'modulo p' routines for each NIST prime.
* Depending on the prime and architecture, makes operations 4 to 8 times
* faster on the corresponding curve.
*
* Comment this macro to disable NIST curves optimisation.
*/
#define POLARSSL_ECP_NIST_OPTIM
/**
* \def POLARSSL_KEY_EXCHANGE_PSK_ENABLED
*

14
library/ecp.c
View file

@ -482,6 +482,8 @@ cleanup:
return( ret );
}
#if defined(POLARSSL_ECP_NIST_OPTIM)
#if defined(POLARSSL_ECP_DP_SECP192R1_ENABLED)
/*
* Compared to the way things are presented in FIPS 186-3 D.2,
@ -865,6 +867,8 @@ cleanup:
#undef P521_MASK
#endif /* POLARSSL_ECP_DP_SECP521R1_ENABLED */
#endif /* POLARSSL_ECP_NIST_OPTIM */
/*
* Domain parameters for secp192r1
*/
@ -1021,7 +1025,9 @@ int ecp_use_known_dp( ecp_group *grp, ecp_group_id id )
{
#if defined(POLARSSL_ECP_DP_SECP192R1_ENABLED)
case POLARSSL_ECP_DP_SECP192R1:
#if defined(POLARSSL_ECP_NIST_OPTIM)
grp->modp = ecp_mod_p192;
#endif
return( ecp_group_read_string( grp, 16,
SECP192R1_P, SECP192R1_B,
SECP192R1_GX, SECP192R1_GY, SECP192R1_N ) );
@ -1029,7 +1035,9 @@ int ecp_use_known_dp( ecp_group *grp, ecp_group_id id )
#if defined(POLARSSL_ECP_DP_SECP224R1_ENABLED)
case POLARSSL_ECP_DP_SECP224R1:
#if defined(POLARSSL_ECP_NIST_OPTIM)
grp->modp = ecp_mod_p224;
#endif
return( ecp_group_read_string( grp, 16,
SECP224R1_P, SECP224R1_B,
SECP224R1_GX, SECP224R1_GY, SECP224R1_N ) );
@ -1037,7 +1045,9 @@ int ecp_use_known_dp( ecp_group *grp, ecp_group_id id )
#if defined(POLARSSL_ECP_DP_SECP256R1_ENABLED)
case POLARSSL_ECP_DP_SECP256R1:
#if defined(POLARSSL_ECP_NIST_OPTIM)
grp->modp = ecp_mod_p256;
#endif
return( ecp_group_read_string( grp, 16,
SECP256R1_P, SECP256R1_B,
SECP256R1_GX, SECP256R1_GY, SECP256R1_N ) );
@ -1045,7 +1055,9 @@ int ecp_use_known_dp( ecp_group *grp, ecp_group_id id )
#if defined(POLARSSL_ECP_DP_SECP384R1_ENABLED)
case POLARSSL_ECP_DP_SECP384R1:
#if defined(POLARSSL_ECP_NIST_OPTIM)
grp->modp = ecp_mod_p384;
#endif
return( ecp_group_read_string( grp, 16,
SECP384R1_P, SECP384R1_B,
SECP384R1_GX, SECP384R1_GY, SECP384R1_N ) );
@ -1053,7 +1065,9 @@ int ecp_use_known_dp( ecp_group *grp, ecp_group_id id )
#if defined(POLARSSL_ECP_DP_SECP521R1_ENABLED)
case POLARSSL_ECP_DP_SECP521R1:
#if defined(POLARSSL_ECP_NIST_OPTIM)
grp->modp = ecp_mod_p521;
#endif
return( ecp_group_read_string( grp, 16,
SECP521R1_P, SECP521R1_B,
SECP521R1_GX, SECP521R1_GY, SECP521R1_N ) );