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Merged EC key generation support

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This commit is contained in:
Paul Bakker 2013-12-02 14:54:01 +01:00
commit 014f143c2a
7 changed files with 196 additions and 23 deletions
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43
library/ecp.c
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@ -58,6 +58,11 @@
#include <limits.h>
#include <stdlib.h>
#if defined(_MSC_VER) && !defined strcasecmp && !defined(EFIX64) && \
!defined(EFI32)
#define strcasecmp _stricmp
#endif
#if defined(_MSC_VER) && !defined(inline)
#define inline _inline
#else
@ -84,13 +89,13 @@ unsigned long add_count, dbl_count, mul_count;
const ecp_curve_info ecp_supported_curves[] =
{
#if defined(POLARSSL_ECP_DP_BP512R1_ENABLED)
{ POLARSSL_ECP_DP_BP512R1, 28, 512, "brainpool512r1" },
{ POLARSSL_ECP_DP_BP512R1, 28, 512, "brainpoolP512r1" },
#endif
#if defined(POLARSSL_ECP_DP_BP384R1_ENABLED)
{ POLARSSL_ECP_DP_BP384R1, 27, 384, "brainpool384r1" },
{ POLARSSL_ECP_DP_BP384R1, 27, 384, "brainpoolP384r1" },
#endif
#if defined(POLARSSL_ECP_DP_BP256R1_ENABLED)
{ POLARSSL_ECP_DP_BP256R1, 26, 256, "brainpool256r1" },
{ POLARSSL_ECP_DP_BP256R1, 26, 256, "brainpoolP256r1" },
#endif
#if defined(POLARSSL_ECP_DP_SECP521R1_ENABLED)
{ POLARSSL_ECP_DP_SECP521R1, 25, 521, "secp521r1" },
@ -154,6 +159,24 @@ const ecp_curve_info *ecp_curve_info_from_tls_id( uint16_t tls_id )
return( NULL );
}
/*
* Get the curve info from the name
*/
const ecp_curve_info *ecp_curve_info_from_name( const char *name )
{
const ecp_curve_info *curve_info;
for( curve_info = ecp_curve_list();
curve_info->grp_id != POLARSSL_ECP_DP_NONE;
curve_info++ )
{
if( strcasecmp( curve_info->name, name ) == 0 )
return( curve_info );
}
return( NULL );
}
/*
* Initialize (the components of) a point
*/
@ -1669,6 +1692,20 @@ int ecp_gen_keypair( ecp_group *grp, mpi *d, ecp_point *Q,
return( ecp_mul( grp, Q, d, &grp->G, f_rng, p_rng ) );
}
/*
* Generate a keypair, prettier wrapper
*/
int ecp_gen_key( ecp_group_id grp_id, ecp_keypair *key,
int (*f_rng)(void *, unsigned char *, size_t), void *p_rng )
{
int ret;
if( ( ret = ecp_use_known_dp( &key->grp, grp_id ) ) != 0 )
return( ret );
return( ecp_gen_keypair( &key->grp, &key->d, &key->Q, f_rng, p_rng ) );
}
#if defined(POLARSSL_ECP_NIST_OPTIM)
/*
* Fast reduction modulo the primes used by the NIST curves.