Abstract: Policy changes are propagated to access control devices of a distributed system. The policy changes are given immediate effect without having to wait for the changes to propagate through the system. A token encodes the policy change and can be provided in connection with access requests. Before an access control device has received a propagated policy change, the access control device can evaluate a token provided in connection with a request to determine, consistent with the policy change, whether to fulfill the request.

Abstract: A system uses information submitted in connection with a request to determine if and how to process the request. The information may be electronically signed by a requestor using a key such that the system processing the request can verify that the requestor has the key and that the information is authentic. The information may include information that identifies a holder of a key needed for processing the request, where the holder of the key can be the system or another, possibly third party, system. Requests to decrypt data may be processed to ensure that a certain amount of time passes before access to the decrypted data is provided, thereby providing an opportunity to cancel such requests and/or otherwise mitigate potential security breaches.

Abstract: A security module securely manages keys. The security module is usable to implement a cryptography service that includes a request processing component. The request processing component responds to requests by causing the security module to perform cryptographic operations that the request processing component cannot perform due to a lack of access to appropriate keys. The security module may be a member of a group of security modules that securely manage keys. Techniques for passing secret information from one security module to the other prevent unauthorized access to secret information.

Abstract: A system comprises a data storage service includes a web service interface operating as a proxy to the data storage service. Data obtained at the data storage service is analyzed by one or more criteria of a data loss prevention policy, the data is encrypted by a key that is inaccessible to a remote service, and then the encrypted data is transmitted to the remote service.

Abstract: A system uses information submitted in connection with a request to determine if and how to process the request. The information may be electronically signed by a requestor using a key such that the system processing the request can verify that the requestor has the key and that the information is authentic. The information may include information that identifies a holder of a key needed for processing the request, where the holder of the key can be the system or another, possibly third party, system. Requests to decrypt data may be processed to ensure that a certain amount of time passes before access to the decrypted data is provided, thereby providing an opportunity to cancel such requests and/or otherwise mitigate potential security breaches.

Abstract: A request to perform one or more operations using a second key that is inaccessible to a customer of a computing resource service provider is received from the customer, with the request including information that enables the computing resource service provider to select the second key from other keys managed on behalf of customers of the computing resource service provider. A first key, and in addition to the first key, an encrypted first key, is provided to the customer. Data encrypted under the first key is received from the customer. The encrypted first key and the data encrypted under the first key is caused to be stored in persistent storage, such that accessing the data, in plaintext form, from the persistent storage requires use of both a third key and the second key that is inaccessible to the customer.

Abstract: Data received through a proxy for a service is analyzed for compliance with one or more data policies, such as one or more data loss prevention policies. When data satisfies the criteria of one or more data policies, the data is manipulated at the proxy prior to transmission of the data to the service. In some examples, the manipulation of the data includes encryption.

Abstract: A service proxy services as an application programming interface proxy to a service, which may involve data storage. When a request to store data is received by the service proxy, the service proxy encrypts the data and stores the data in encrypted form at the service. Similarly, when a request to retrieve data is received by the service proxy, the service proxy obtains encrypted data from the service and decrypts the data. The data may be encrypted using a key that is kept inaccessible to the service.

Abstract: Data received through a proxy for a service is analyzed for compliance with one or more data policies, such as one or more data loss prevention policies. When data satisfies the criteria of one or more data policies, the data is manipulated at the proxy prior to transmission of the data to the service. In some examples, the manipulation of the data includes encryption.

Abstract: A first service submits a request to a second service on behalf of a customer of a service provider. The request may have been triggered by a request of the customer to the first service. To process the request, the second service evaluates one or more policies to determine whether fulfillment of the request is allowed by policy associated with the customer. The one or more policies may state one or more conditions on one or more services that played a role in submission of the request. If determined that the policy allows fulfillment of the request, the second service fulfills the request.

Abstract: Customers accessing resources and/or data in a multi-tenant environment can obtain assurance that a provider of that environment will honor only requests associated with the customer. A multi-tenant cryptographic service can be used to manage cryptographic key material and/or other security resources in the multi-tenant environment. The cryptographic service can provide a mechanism in which the service can receive requests to use the cryptographic key material to access encrypted customer data, export key material out of the cryptographic service, destroy key material managed by the cryptographic service, among others. Such an approach can enable a customer to manage key material without exposing the key material outside a secure environment.

Abstract: Policy changes are propagated to access control devices of a distributed system. The policy changes are given immediate effect without having to wait for the changes to propagate through the system. A token encodes the policy change and can be provided in connection with access requests. Before an access control device has received a propagated policy change, the access control device can evaluate a token provided in connection with a request to determine, consistent with the policy change, whether to fulfill the request.

Abstract: A plurality of devices are each operable to provide information that is usable for to prove authorization with any of the other devices. The devices may have common access to a cryptographic key. A device may use the cryptographic key to encrypt a session key and provide both the session key and the encrypted session key. Requests to any of the devices can include the encrypted session key and a digital signature generated using the session key. In this manner, a device that receives the request can decrypt the session key and use the decrypted session key to verify the digital signature.

Abstract: Data received through a proxy for a service is analyzed for compliance with one or more data policies, such as one or more data loss prevention policies. When data satisfies the criteria of one or more data policies, the data is manipulated at the proxy prior to transmission of the data to the service. In some examples, the manipulation of the data includes encryption.

Abstract: A first service submits a request to a second service on behalf of a customer of a service provider. The request may have been triggered by a request of the customer to the first service. To process the request, the second service evaluates one or more policies to determine whether fulfillment of the request is allowed by policy associated with the customer. The one or more policies may state one or more conditions on one or more services that played a role in submission of the request. If determined that the policy allows fulfillment of the request, the second service fulfills the request.

Abstract: Customers accessing resources and/or data in a multi-tenant environment can obtain assurance that a provider of that environment will honor only requests associated with the customer. A multi-tenant cryptographic service can be used to manage cryptographic key material and/or other security resources in the multi-tenant environment. The cryptographic service can provide a mechanism in which the service can receive requests to use the cryptographic key material to access encrypted customer data, export key material out of the cryptographic service, destroy key material managed by the cryptographic service, among others. Such an approach can enable a customer to manage key material without exposing the key material outside a secure environment.

Abstract: A service proxy services as an application programming interface proxy to a service, which may involve data storage. When a request to store data is received by the service proxy, the service proxy encrypts the data and stores the data in encrypted form at the service. Similarly, when a request to retrieve data is received by the service proxy, the service proxy obtains encrypted data from the service and decrypts the data. The data may be encrypted using a key that is kept inaccessible to the service.

Abstract: Policy changes are propagated to access control devices of a distributed system. The policy changes are given immediate effect without having to wait for the changes to propagate through the system. A token encodes the policy change and can be provided in connection with access requests. Before an access control device has received a propagated policy change, the access control device can evaluate a token provided in connection with a request to determine, consistent with the policy change, whether to fulfill the request.

Abstract: A plurality of devices are each operable to provide information that is usable for to prove authorization with any of the other devices. The devices may have common access to a cryptographic key. A device may use the cryptographic key to encrypt a session key and provide both the session key and the encrypted session key. Requests to any of the devices can include the encrypted session key and a digital signature generated using the session key. In this manner, a device that receives the request can decrypt the session key and use the decrypted session key to verify the digital signature.

Abstract: A first service submits a request to a second service on behalf of a customer of a service provider. The request may have been triggered by a request of the customer to the first service. To process the request, the second service evaluates one or more policies to determine whether fulfillment of the request is allowed by policy associated with the customer. The one or more policies may state one or more conditions on one or more services that played a role in submission of the request. If determined that the policy allows fulfillment of the request, the second service fulfills the request.