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| author | Alex Stapleton <alexs@prol.etari.at> | 2014-05-03 21:50:39 +0100 |
|---|---|---|
| committer | Alex Stapleton <alexs@prol.etari.at> | 2014-05-03 21:50:39 +0100 |
| commit | 595393dd4d84f1bbb6541082b837c6cfb1aaa71b (patch) | |
| tree | bdd6ac952da562695ebaab440aeeb75dbbfd221f /cryptography | |
| parent | d798d7a65ec94a990bd2fd17c864f80c30b01960 (diff) | |
| download | cryptography-595393dd4d84f1bbb6541082b837c6cfb1aaa71b.tar.gz cryptography-595393dd4d84f1bbb6541082b837c6cfb1aaa71b.tar.bz2 cryptography-595393dd4d84f1bbb6541082b837c6cfb1aaa71b.zip | |
DSA support
Diffstat (limited to 'cryptography')
| -rw-r--r-- | cryptography/hazmat/backends/openssl/backend.py | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/cryptography/hazmat/backends/openssl/backend.py b/cryptography/hazmat/backends/openssl/backend.py index aa3a9350..5a434dcd 100644 --- a/cryptography/hazmat/backends/openssl/backend.py +++ b/cryptography/hazmat/backends/openssl/backend.py @@ -396,9 +396,23 @@ class Backend(object): assert rsa_cdata != self._ffi.NULL rsa_cdata = self._ffi.gc(rsa_cdata, self._lib.RSA_free) return self._rsa_cdata_to_private_key(rsa_cdata) + elif type == self._lib.EVP_PKEY_DSA: + dsa_cdata = self._lib.EVP_PKEY_get1_DSA(evp_pkey) + assert dsa_cdata != self._ffi.NULL + dsa_cdata = self._ffi.gc(dsa_cdata, self._lib.DSA_free) + return self._dsa_cdata_to_private_key(dsa_cdata) else: raise UnsupportedAlgorithm("Unsupported key type.") + def _dsa_cdata_to_private_key(self, cdata): + return dsa.DSAPrivateKey( + modulus=self._bn_to_int(cdata.p), + subgroup_order=self._bn_to_int(cdata.q), + generator=self._bn_to_int(cdata.g), + x=self._bn_to_int(cdata.priv_key), + y=self._bn_to_int(cdata.pub_key) + ) + def _rsa_cdata_to_private_key(self, cdata): return rsa.RSAPrivateKey( p=self._bn_to_int(cdata.p), |