diff options
| author | Paul Kehrer <paul.l.kehrer@gmail.com> | 2014-03-19 18:41:35 -0400 |
|---|---|---|
| committer | Paul Kehrer <paul.l.kehrer@gmail.com> | 2014-03-19 18:41:35 -0400 |
| commit | 798c03456d6f1fa8f27433a7e3928d583e1e120f (patch) | |
| tree | b97df27c8c25d8372e13f6d75a5cf1dff68cf590 | |
| parent | a3bb335b2bfec37b0a37be1f5525d70945d4d815 (diff) | |
| download | cryptography-798c03456d6f1fa8f27433a7e3928d583e1e120f.tar.gz cryptography-798c03456d6f1fa8f27433a7e3928d583e1e120f.tar.bz2 cryptography-798c03456d6f1fa8f27433a7e3928d583e1e120f.zip | |
document the ValueError
| -rw-r--r-- | cryptography/hazmat/backends/openssl/backend.py | 4 | ||||
| -rw-r--r-- | docs/hazmat/primitives/asymmetric/rsa.rst | 6 |
2 files changed, 8 insertions, 2 deletions
diff --git a/cryptography/hazmat/backends/openssl/backend.py b/cryptography/hazmat/backends/openssl/backend.py index d7c0f882..fa50fcab 100644 --- a/cryptography/hazmat/backends/openssl/backend.py +++ b/cryptography/hazmat/backends/openssl/backend.py @@ -712,7 +712,6 @@ class _RSASignatureContext(object): def __init__(self, backend, private_key, padding, algorithm): self._backend = backend self._private_key = private_key - key_size_bytes = int(math.ceil(private_key.key_size / 8.0)) if not isinstance(padding, interfaces.AsymmetricPadding): raise TypeError( @@ -732,6 +731,7 @@ class _RSASignatureContext(object): # Size of key in bytes - 2 is the maximum # PSS signature length (salt length is checked later) + key_size_bytes = int(math.ceil(private_key.key_size / 8.0)) if key_size_bytes - algorithm.digest_size - 2 < 0: raise ValueError("Digest too large for key size.") @@ -891,7 +891,6 @@ class _RSAVerificationContext(object): self._backend = backend self._public_key = public_key self._signature = signature - key_size_bytes = int(math.ceil(public_key.key_size / 8.0)) if not isinstance(padding, interfaces.AsymmetricPadding): raise TypeError( @@ -911,6 +910,7 @@ class _RSAVerificationContext(object): # Size of key in bytes - 2 is the maximum # PSS signature length (salt length is checked later) + key_size_bytes = int(math.ceil(public_key.key_size / 8.0)) if key_size_bytes - algorithm.digest_size - 2 < 0: raise ValueError("Digest too large for key size.") diff --git a/docs/hazmat/primitives/asymmetric/rsa.rst b/docs/hazmat/primitives/asymmetric/rsa.rst index dbb0da4f..57c8eec2 100644 --- a/docs/hazmat/primitives/asymmetric/rsa.rst +++ b/docs/hazmat/primitives/asymmetric/rsa.rst @@ -108,6 +108,9 @@ RSA :class:`~cryptography.hazmat.primitives.interfaces.AsymmetricPadding` provider. + :raises ValueError: This is raised when the chosen hash algorithm is + too large for the key size. + :raises UnsupportedHash: This is raised when the backend does not support the chosen hash algorithm. If the padding is :class:`~cryptography.hazmat.primitives.asymmetric.padding.PSS` @@ -210,6 +213,9 @@ RSA :class:`~cryptography.hazmat.primitives.interfaces.AsymmetricPadding` provider. + :raises ValueError: This is raised when the chosen hash algorithm is + too large for the key size. + :raises UnsupportedHash: This is raised when the backend does not support the chosen hash algorithm. If the padding is :class:`~cryptography.hazmat.primitives.asymmetric.padding.PSS` |