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| author | Paul Kehrer <paul.l.kehrer@gmail.com> | 2013-12-21 17:31:48 -0600 |
|---|---|---|
| committer | Paul Kehrer <paul.l.kehrer@gmail.com> | 2013-12-21 17:31:48 -0600 |
| commit | ca73504e62e2c55a7235f94c78cb8ee4d3718590 (patch) | |
| tree | 3f01c56e1c16113be6da6d368b61cd1e0d570409 /docs/hazmat | |
| parent | f7b4ede584f5612546a07eb085eb5672629dcb96 (diff) | |
| download | cryptography-ca73504e62e2c55a7235f94c78cb8ee4d3718590.tar.gz cryptography-ca73504e62e2c55a7235f94c78cb8ee4d3718590.tar.bz2 cryptography-ca73504e62e2c55a7235f94c78cb8ee4d3718590.zip | |
add note regarding not truncating tags
Diffstat (limited to 'docs/hazmat')
| -rw-r--r-- | docs/hazmat/primitives/symmetric-encryption.rst | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/docs/hazmat/primitives/symmetric-encryption.rst b/docs/hazmat/primitives/symmetric-encryption.rst index f4d0457a..8ed64c7c 100644 --- a/docs/hazmat/primitives/symmetric-encryption.rst +++ b/docs/hazmat/primitives/symmetric-encryption.rst @@ -352,6 +352,11 @@ Modes Do not reuse an ``initialization_vector`` with a given ``key``. + .. note:: + + Do not truncate the GCM authentication tag unless absolutely necessary. + If you must truncate the minimum allowable length is 4 bytes. + :param bytes tag: The tag bytes to verify during decryption. When encrypting this must be None. |