commit f51c8fc353190fce2a2cb46f77fced2cc19cc3ca
author Manuel Pégourié-Gonnard <mpg@elzevir.fr> Fri Jan 10 18:17:18 2014 +0100
committer Manuel Pégourié-Gonnard <mpg@elzevir.fr> Fri Jan 10 18:17:18 2014 +0100
tree a504340371acdfdab067d1be95c4e814b2ae70f1
parent c78c8422c25b9dc38f09eded3200d565375522e2

Add support for secp256k1 arithmetic

library/ecp_curves.c

diff --git a/library/ecp_curves.c b/library/ecp_curves.c
index 706e0ee..762c3f2 100644
--- a/library/ecp_curves.c
+++ b/library/ecp_curves.c
@@ -318,6 +318,39 @@
 };
 #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 @@
             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 ) );