diff options
| -rw-r--r-- | src/cryptography/hazmat/backends/openssl/ec.py | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/cryptography/hazmat/backends/openssl/ec.py b/src/cryptography/hazmat/backends/openssl/ec.py index e70c7c94..33d5b498 100644 --- a/src/cryptography/hazmat/backends/openssl/ec.py +++ b/src/cryptography/hazmat/backends/openssl/ec.py @@ -58,6 +58,18 @@ def _ec_key_curve_sn(backend, ec_key): return sn +def _mark_asn1_named_ec_curve(backend, ec_cdata): + """ + Set the named curve flag on the EC_KEY. This causes OpenSSL to + serialize EC keys along with their curve OID which makes + deserialization easier. + """ + + backend._lib.EC_KEY_set_asn1_flag( + ec_cdata, backend._lib.OPENSSL_EC_NAMED_CURVE + ) + + def _sn_to_elliptic_curve(backend, sn): try: return ec._CURVE_TYPES[sn]() @@ -138,6 +150,7 @@ class _ECDSAVerificationContext(object): class _EllipticCurvePrivateKey(object): def __init__(self, backend, ec_key_cdata): self._backend = backend + _mark_asn1_named_ec_curve(backend, ec_key_cdata) self._ec_key = ec_key_cdata sn = _ec_key_curve_sn(backend, ec_key_cdata) @@ -190,6 +203,7 @@ class _EllipticCurvePrivateKey(object): class _EllipticCurvePublicKey(object): def __init__(self, backend, ec_key_cdata): self._backend = backend + _mark_asn1_named_ec_curve(backend, ec_key_cdata) self._ec_key = ec_key_cdata sn = _ec_key_curve_sn(backend, ec_key_cdata) |