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Diffstat (limited to 'docs/hazmat/primitives')
| -rw-r--r-- | docs/hazmat/primitives/symmetric-encryption.rst | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/docs/hazmat/primitives/symmetric-encryption.rst b/docs/hazmat/primitives/symmetric-encryption.rst index 70c3d2f4..a77e0e79 100644 --- a/docs/hazmat/primitives/symmetric-encryption.rst +++ b/docs/hazmat/primitives/symmetric-encryption.rst @@ -320,6 +320,12 @@ Modes .. class:: GCM(initialization_vector, tag=None) + .. warning:: + + When using this mode you MUST not use the decrypted data until every + byte has been decrypted. GCM provides NO guarantees of ciphertext + integrity until decryption is complete. + GCM (Galois Counter Mode) is a mode of operation for block ciphers. It is an AEAD (authenticated encryption with additional data) mode. AEAD is a type of block cipher mode that encrypts the message as well as |