AWS CloudHSM is now available in the AWS GovCloud (US-East) region.
CloudHSM provides fully managed hardware security module (HSM) instances in the AWS Cloud. With CloudHSM, you can manage and use your own encryption keys using FIPS 140-2 Level 3 validated HSMs. Applications can be built using using industry-standard APIs, such as PKCS#11, Java Cryptography Extensions (JCE) and Windows Cryptography API: Next Generation (CNG).