diff options
| -rw-r--r-- | docs/primitives/symmetric-encryption.rst | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/docs/primitives/symmetric-encryption.rst b/docs/primitives/symmetric-encryption.rst index 587c94b4..c4f78a79 100644 --- a/docs/primitives/symmetric-encryption.rst +++ b/docs/primitives/symmetric-encryption.rst @@ -83,11 +83,15 @@ Modes Insecure Modes -------------- -.. warning:: Do not use. This is an insecure mode. +.. warning:: + + These modes are insecure. New applications should never make use of them, + and existing applications should strongly consider migrating away. + + .. class:: cryptography.primitives.block.modes.ECB() ECB (Electronic Code Book) is the simplest mode of operation for block - ciphers. The data is separated into blocks and each block is encrypted - separately. This means identical plaintext blocks will always result in - identical encrypted blocks. Due to this property it is not recommended - for use. Really, don't use it. Just. Don't. + ciphers. Each block of data is encrypted in the same way. This means + identical plaintext blocks will always result in identical ciphertext + blocks, and thus result in information leakage |