Abstract: A computer-implemented method for reencrypting data. A key management service receives a web service application programming interface or other request to reencrypt data from a first key to a second key, where the first key and the second key are managed by the key management service on behalf of a user of the service. The key management service response to the request by performing the associated operations and providing a response with the reencrypted data.

Abstract: A network-based service for the management of cryptographic key, such as a key management service (“KMS”), provides a web service application programming interface (“API”). Cryptographic keys managed by the service may be stored in a one or more network-connected cryptographic devices such as network-connected hardware security modules (“HSM”). The key management service maintains metadata associated with the cryptographic keys. When a request is received by the key management service, the key management service uses an identifier provided with the request to identify metadata associated with a cryptographic key used to fulfill the request. The key management service uses the metadata to identify a cryptographic device containing the cryptographic key. The key management service generates a set of commands for fulfilling the request such that the commands are compatible with a protocol implemented by the identified cryptographic device, and the set of commands are sent to the identified cryptographic device.

Abstract: A network-based service for the management of cryptographic key, such as a key management service (“KMS”), provides a web service application programming interface (“API”). Cryptographic keys managed by the service may be stored in a one or more network-connected cryptographic devices such as network-connected hardware security modules (“HSM”). The key management service maintains metadata associated with the cryptographic keys. When a request is received by the key management service, the key management service uses an identifier provided with the request to identify metadata associated with a cryptographic key used to fulfill the request. The key management service uses the metadata to identify a cryptographic device containing the cryptographic key. The key management service generates a set of commands for fulfilling the request such that the commands are compatible with a protocol implemented by the identified cryptographic device, and the set of commands are sent to the identified cryptographic device.

Abstract: A technology is described for a salt service. An example method may include generating a salt value and a salt identifier used to reference the salt value in response to a salt value setup request. Storing the salt value in a data store where the salt value may be referenced by the salt identifier. The salt value and the salt identifier may then be provided in response to the salt value setup request to enable the salt identifier to be stored in association with a first hash value generated from the salt value and a customer password for future customer authentications. In response to an authentication request, the salt value may be retrieved from the data store and the salt value may be provided, enabling customer authentication to be performed by comparing the first hash value with a second hash value generated from the salt value and a customer password.