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Diffstat (limited to 'docs')
| -rw-r--r-- | docs/primitives/symmetric-encryption.rst | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/docs/primitives/symmetric-encryption.rst b/docs/primitives/symmetric-encryption.rst index 7899e67d..a8d9485d 100644 --- a/docs/primitives/symmetric-encryption.rst +++ b/docs/primitives/symmetric-encryption.rst @@ -15,13 +15,17 @@ where the encrypter and decrypter both use the same key. Block ciphers work by encrypting content in chunks, often 64- or 128-bits. They combine an underlying algorithm (such as AES), with a mode (such as - CBC, CTR, or GCM). A simple example of encrypting content with AES is: + CBC, CTR, or GCM). A simple example of encrypting (and then decrypting) + content with AES is: .. doctest:: >>> from cryptography.primitives.block import BlockCipher, ciphers, modes >>> cipher = BlockCipher(ciphers.AES(key), modes.CBC(iv)) - >>> cipher.encrypt(b"a secret message") + cipher.finalize() + >>> encrypt = cipher.encryptor() + >>> ct = encrypt.update(b"a secret message") + encrypt.finalize() + >>> decrypt = cipher.decryptor() + >>> decrypt.update(ct) + decrypt.finalize() '...' :param cipher: One of the ciphers described below. |