diff --git a/include/polarssl/oid.h b/include/polarssl/oid.h
index e63c169..d9a1f8f 100644
--- a/include/polarssl/oid.h
+++ b/include/polarssl/oid.h
@@ -61,6 +61,9 @@
 #define OID_ORG_RSA_DATA_SECURITY       "\x86\xf7\x0d"  /* {rsadsi(113549)} */
 #define OID_RSA_COMPANY                 OID_ISO_MEMBER_BODIES OID_COUNTRY_US    \
                                         OID_ORG_RSA_DATA_SECURITY /* {iso(1) member-body(2) us(840) rsadsi(113549)} */
+#define OID_ORG_ANSI_X9_62              "\xce\x3d" /* ansi-X9-62(10045) */
+#define OID_ANSI_X9_62                  OID_ISO_MEMBER_BODIES OID_COUNTRY_US \
+                                        OID_ORG_ANSI_X9_62
 
 /*
  * ISO Identified organization OID parts
@@ -70,6 +73,8 @@
 #define OID_OIW_SECSIG                  OID_ORG_OIW "\x03"
 #define OID_OIW_SECSIG_ALG              OID_OIW_SECSIG "\x02"
 #define OID_OIW_SECSIG_SHA1             OID_OIW_SECSIG_ALG "\x1a"
+#define OID_ORG_CERTICOM                "\x81\x04"  /* certicom(132) */
+#define OID_CERTICOM                    OID_ISO_IDENTIFIED_ORG OID_ORG_CERTICOM
 
 /*
  * ISO ITU OID parts
@@ -235,6 +240,19 @@
 #define OID_PKCS12_PBE_SHA1_RC2_128_CBC     OID_PKCS12_PBE "\x05" /**< pbeWithSHAAnd128BitRC2-CBC OBJECT IDENTIFIER ::= {pkcs-12PbeIds 5} */
 #define OID_PKCS12_PBE_SHA1_RC2_40_CBC      OID_PKCS12_PBE "\x06" /**< pbeWithSHAAnd40BitRC2-CBC OBJECT IDENTIFIER ::= {pkcs-12PbeIds 6} */
 
+/*
+ * EC key algorithms from RFC 5420
+ */
+
+/* id-ecPublicKey OBJECT IDENTIFIER ::= {
+ *       iso(1) member-body(2) us(840) ansi-X9-62(10045) keyType(2) 1 } */
+#define OID_EC_ALG_UNRESTRICTED         OID_ANSI_X9_62 "\x02\01"
+
+/*   id-ecDH OBJECT IDENTIFIER ::= {
+ *     iso(1) identified-organization(3) certicom(132)
+ *     schemes(1) ecdh(12) } */
+#define OID_EC_ALG_ECDH                 OID_CERTICOM "\x01\x0c"
+
 #ifdef __cplusplus
 extern "C" {
 #endif