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import base64
import binascii
import boto3
import pytest
from botocore.exceptions import ClientError
from moto import mock_aws
from tests import aws_verified
from .test_kms import PLAINTEXT_VECTORS, _get_encoded_value
@pytest.mark.aws_verified
@aws_verified
def test_encrypt_key_with_empty_content():
client_kms = boto3.client("kms", region_name="ap-northeast-1")
metadata = client_kms.create_key()["KeyMetadata"]
with pytest.raises(ClientError) as exc:
client_kms.encrypt(KeyId=metadata["KeyId"], Plaintext="")
err = exc.value.response["Error"]
assert err["Code"] == "ValidationException"
assert (
err["Message"]
== "1 validation error detected: Value at 'plaintext' failed to satisfy constraint: Member must have length greater than or equal to 1"
)
client_kms.schedule_key_deletion(KeyId=metadata["KeyId"], PendingWindowInDays=7)
@pytest.mark.aws_verified
@aws_verified
def test_encrypt_key_with_large_content():
client_kms = boto3.client("kms", region_name="ap-northeast-1")
metadata = client_kms.create_key()["KeyMetadata"]
with pytest.raises(ClientError) as exc:
client_kms.encrypt(KeyId=metadata["KeyId"], Plaintext=b"x" * 4097)
err = exc.value.response["Error"]
assert err["Code"] == "ValidationException"
assert (
err["Message"]
== "1 validation error detected: Value at 'plaintext' failed to satisfy constraint: Member must have length less than or equal to 4096"
)
client_kms.schedule_key_deletion(KeyId=metadata["KeyId"], PendingWindowInDays=7)
@pytest.mark.parametrize("plaintext", PLAINTEXT_VECTORS)
@mock_aws
def test_encrypt(plaintext):
client = boto3.client("kms", region_name="us-west-2")
key = client.create_key(Description="key")
key_id = key["KeyMetadata"]["KeyId"]
key_arn = key["KeyMetadata"]["Arn"]
response = client.encrypt(KeyId=key_id, Plaintext=plaintext)
assert response["CiphertextBlob"] != plaintext
# CiphertextBlob must NOT be base64-encoded
with pytest.raises(binascii.Error):
base64.b64decode(response["CiphertextBlob"], validate=True)
assert response["KeyId"] == key_arn
@mock_aws
def test_encrypt_using_alias_name():
kms = boto3.client("kms", region_name="us-east-1")
key_details = kms.create_key()
key_alias = "alias/examplekey"
kms.create_alias(AliasName=key_alias, TargetKeyId=key_details["KeyMetadata"]["Arn"])
# Just ensure that they do not throw an error, i.e. verify that it's possible to call this method using the Alias
resp = kms.encrypt(KeyId=key_alias, Plaintext="hello")
kms.decrypt(CiphertextBlob=resp["CiphertextBlob"])
@mock_aws
def test_encrypt_using_alias_arn():
kms = boto3.client("kms", region_name="us-east-1")
key_details = kms.create_key()
key_alias = "alias/examplekey"
kms.create_alias(AliasName=key_alias, TargetKeyId=key_details["KeyMetadata"]["Arn"])
aliases = kms.list_aliases(KeyId=key_details["KeyMetadata"]["Arn"])["Aliases"]
my_alias = [a for a in aliases if a["AliasName"] == key_alias][0]
kms.encrypt(KeyId=my_alias["AliasArn"], Plaintext="hello")
@mock_aws
def test_encrypt_using_key_arn():
kms = boto3.client("kms", region_name="us-east-1")
key_details = kms.create_key()
key_alias = "alias/examplekey"
kms.create_alias(AliasName=key_alias, TargetKeyId=key_details["KeyMetadata"]["Arn"])
kms.encrypt(KeyId=key_details["KeyMetadata"]["Arn"], Plaintext="hello")
@mock_aws
def test_re_encrypt_using_aliases():
client = boto3.client("kms", region_name="us-west-2")
key_1_id = client.create_key(Description="key 1")["KeyMetadata"]["KeyId"]
key_2_arn = client.create_key(Description="key 2")["KeyMetadata"]["Arn"]
key_alias = "alias/examplekey"
client.create_alias(AliasName=key_alias, TargetKeyId=key_2_arn)
encrypt_response = client.encrypt(KeyId=key_1_id, Plaintext="data")
client.re_encrypt(
CiphertextBlob=encrypt_response["CiphertextBlob"],
DestinationKeyId=key_alias,
)
@pytest.mark.parametrize("plaintext", PLAINTEXT_VECTORS)
@mock_aws
def test_decrypt(plaintext):
client = boto3.client("kms", region_name="us-west-2")
key = client.create_key(Description="key")
key_id = key["KeyMetadata"]["KeyId"]
key_arn = key["KeyMetadata"]["Arn"]
encrypt_response = client.encrypt(KeyId=key_id, Plaintext=plaintext)
client.create_key(Description="key")
# CiphertextBlob must NOT be base64-encoded
with pytest.raises(binascii.Error):
base64.b64decode(encrypt_response["CiphertextBlob"], validate=True)
decrypt_response = client.decrypt(CiphertextBlob=encrypt_response["CiphertextBlob"])
# Plaintext must NOT be base64-encoded
with pytest.raises(binascii.Error):
base64.b64decode(decrypt_response["Plaintext"], validate=True)
assert decrypt_response["Plaintext"] == _get_encoded_value(plaintext)
assert decrypt_response["KeyId"] == key_arn
@pytest.mark.parametrize("plaintext", PLAINTEXT_VECTORS)
@mock_aws
def test_kms_encrypt(plaintext):
client = boto3.client("kms", region_name="us-east-1")
key = client.create_key(Description="key")
response = client.encrypt(KeyId=key["KeyMetadata"]["KeyId"], Plaintext=plaintext)
response = client.decrypt(CiphertextBlob=response["CiphertextBlob"])
assert response["Plaintext"] == _get_encoded_value(plaintext)
@pytest.mark.parametrize("plaintext", PLAINTEXT_VECTORS)
@mock_aws
def test_re_encrypt_decrypt(plaintext):
client = boto3.client("kms", region_name="us-west-2")
key_1 = client.create_key(Description="key 1")
key_1_id = key_1["KeyMetadata"]["KeyId"]
key_1_arn = key_1["KeyMetadata"]["Arn"]
key_2 = client.create_key(Description="key 2")
key_2_id = key_2["KeyMetadata"]["KeyId"]
key_2_arn = key_2["KeyMetadata"]["Arn"]
encrypt_response = client.encrypt(
KeyId=key_1_id, Plaintext=plaintext, EncryptionContext={"encryption": "context"}
)
re_encrypt_response = client.re_encrypt(
CiphertextBlob=encrypt_response["CiphertextBlob"],
SourceEncryptionContext={"encryption": "context"},
DestinationKeyId=key_2_id,
DestinationEncryptionContext={"another": "context"},
)
# CiphertextBlob must NOT be base64-encoded
with pytest.raises(binascii.Error):
base64.b64decode(re_encrypt_response["CiphertextBlob"], validate=True)
assert re_encrypt_response["SourceKeyId"] == key_1_arn
assert re_encrypt_response["KeyId"] == key_2_arn
decrypt_response_1 = client.decrypt(
CiphertextBlob=encrypt_response["CiphertextBlob"],
EncryptionContext={"encryption": "context"},
)
assert decrypt_response_1["Plaintext"] == _get_encoded_value(plaintext)
assert decrypt_response_1["KeyId"] == key_1_arn
decrypt_response_2 = client.decrypt(
CiphertextBlob=re_encrypt_response["CiphertextBlob"],
EncryptionContext={"another": "context"},
)
assert decrypt_response_2["Plaintext"] == _get_encoded_value(plaintext)
assert decrypt_response_2["KeyId"] == key_2_arn
assert decrypt_response_1["Plaintext"] == decrypt_response_2["Plaintext"]
@mock_aws
def test_re_encrypt_to_invalid_destination():
client = boto3.client("kms", region_name="us-west-2")
key = client.create_key(Description="key 1")
key_id = key["KeyMetadata"]["KeyId"]
encrypt_response = client.encrypt(KeyId=key_id, Plaintext=b"some plaintext")
with pytest.raises(client.exceptions.NotFoundException):
client.re_encrypt(
CiphertextBlob=encrypt_response["CiphertextBlob"],
DestinationKeyId="alias/DoesNotExist",
)
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