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Add support for secp256k1 arithmetic

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Manuel Pégourié-Gonnard 2014-01-10 18:17:18 +01:00
parent c78c8422c2
commit f51c8fc353
4 changed files with 48 additions and 0 deletions
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38
library/ecp_curves.c
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@ -318,6 +318,39 @@ static t_uint secp521r1_n[] = {
};
#endif /* POLARSSL_ECP_DP_SECP521R1_ENABLED */
#if defined(POLARSSL_ECP_DP_SECP256K1_ENABLED)
static t_uint secp256k1_p[] = {
BYTES_TO_T_UINT_8( 0x2F, 0xFC, 0xFF, 0xFF, 0xFE, 0xFF, 0xFF, 0xFF ),
BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
};
static t_uint secp256k1_a[] = {
BYTES_TO_T_UINT_2( 0x00, 0x00 ),
};
static t_uint secp256k1_b[] = {
BYTES_TO_T_UINT_2( 0x07, 0x00 ),
};
static t_uint secp256k1_gx[] = {
BYTES_TO_T_UINT_8( 0x98, 0x17, 0xF8, 0x16, 0x5B, 0x81, 0xF2, 0x59 ),
BYTES_TO_T_UINT_8( 0xD9, 0x28, 0xCE, 0x2D, 0xDB, 0xFC, 0x9B, 0x02 ),
BYTES_TO_T_UINT_8( 0x07, 0x0B, 0x87, 0xCE, 0x95, 0x62, 0xA0, 0x55 ),
BYTES_TO_T_UINT_8( 0xAC, 0xBB, 0xDC, 0xF9, 0x7E, 0x66, 0xBE, 0x79 ),
};
static t_uint secp256k1_gy[] = {
BYTES_TO_T_UINT_8( 0xB8, 0xD4, 0x10, 0xFB, 0x8F, 0xD0, 0x47, 0x9C ),
BYTES_TO_T_UINT_8( 0x19, 0x54, 0x85, 0xA6, 0x48, 0xB4, 0x17, 0xFD ),
BYTES_TO_T_UINT_8( 0xA8, 0x08, 0x11, 0x0E, 0xFC, 0xFB, 0xA4, 0x5D ),
BYTES_TO_T_UINT_8( 0x65, 0xC4, 0xA3, 0x26, 0x77, 0xDA, 0x3A, 0x48 ),
};
static t_uint secp256k1_n[] = {
BYTES_TO_T_UINT_8( 0x41, 0x41, 0x36, 0xD0, 0x8C, 0x5E, 0xD2, 0xBF ),
BYTES_TO_T_UINT_8( 0x3B, 0xA0, 0x48, 0xAF, 0xE6, 0xDC, 0xAE, 0xBA ),
BYTES_TO_T_UINT_8( 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
BYTES_TO_T_UINT_8( 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ),
};
#endif /* POLARSSL_ECP_DP_SECP256K1_ENABLED */
/*
* Domain parameters for brainpoolP256r1 (RFC 5639 3.4)
*/
@ -648,6 +681,11 @@ int ecp_use_known_dp( ecp_group *grp, ecp_group_id id )
return( LOAD_GROUP( secp521r1 ) );
#endif /* POLARSSL_ECP_DP_SECP521R1_ENABLED */
#if defined(POLARSSL_ECP_DP_SECP256K1_ENABLED)
case POLARSSL_ECP_DP_SECP256K1:
return( LOAD_GROUP_A( secp256k1 ) );
#endif /* POLARSSL_ECP_DP_SECP256K1_ENABLED */
#if defined(POLARSSL_ECP_DP_BP256R1_ENABLED)
case POLARSSL_ECP_DP_BP256R1:
return( LOAD_GROUP_A( brainpoolP256r1 ) );