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-rw-r--r--lib/public_key/src/public_key.erl26
1 files changed, 23 insertions, 3 deletions
diff --git a/lib/public_key/src/public_key.erl b/lib/public_key/src/public_key.erl
index 786cd370f9..6788c1ee92 100644
--- a/lib/public_key/src/public_key.erl
+++ b/lib/public_key/src/public_key.erl
@@ -1323,9 +1323,9 @@ ec_normalize_params(#'ECParameters'{} = ECParams) ->
ec_normalize_params(Other) -> Other.
-spec ec_curve_spec(ecpk_parameters_api()) -> term().
-ec_curve_spec( #'ECParameters'{fieldID = FieldId, curve = PCurve, base = Base, order = Order, cofactor = CoFactor }) ->
- Field = {pubkey_cert_records:supportedCurvesTypes(FieldId#'FieldID'.fieldType),
- FieldId#'FieldID'.parameters},
+ec_curve_spec( #'ECParameters'{fieldID = #'FieldID'{fieldType = Type,
+ parameters = Params}, curve = PCurve, base = Base, order = Order, cofactor = CoFactor }) ->
+ Field = format_field(pubkey_cert_records:supportedCurvesTypes(Type), Params),
Curve = {PCurve#'Curve'.a, PCurve#'Curve'.b, none},
{Field, Curve, Base, Order, CoFactor};
ec_curve_spec({ecParameters, ECParams}) ->
@@ -1335,6 +1335,26 @@ ec_curve_spec({namedCurve, OID}) when is_tuple(OID), is_integer(element(1,OID))
ec_curve_spec({namedCurve, Name}) when is_atom(Name) ->
crypto:ec_curve(Name).
+format_field(characteristic_two_field = Type, Params0) ->
+ #'Characteristic-two'{
+ m = M,
+ basis = BasisOid,
+ parameters = Params} = der_decode('Characteristic-two', Params0),
+ {Type, M, field_param_decode(BasisOid, Params)};
+format_field(prime_field, Params0) ->
+ Prime = der_decode('Prime-p', Params0),
+ {prime_field, Prime}.
+
+field_param_decode(?'ppBasis', Params) ->
+ #'Pentanomial'{k1 = K1, k2 = K2, k3 = K3} =
+ der_decode('Pentanomial', Params),
+ {ppbasis, K1, K2, K3};
+field_param_decode(?'tpBasis', Params) ->
+ K = der_decode('Trinomial', Params),
+ {tpbasis, K};
+field_param_decode(?'gnBasis', _) ->
+ onbasis.
+
-spec ec_key({PubKey::term(), PrivateKey::term()}, Params::ecpk_parameters()) -> #'ECPrivateKey'{}.
ec_key({PubKey, PrivateKey}, Params) ->
#'ECPrivateKey'{version = 1,