KMS keys are specific to the AWS Region that they are created in, and you cannot use encryption keys from one AWS Region in another AWS Region. --source-region – The ID of the AWS Region of the source DB snapshot.
What are multi-region keys in AWS KMS?
AWS Key Management Service (AWS KMS) is introducing multi-Region keys, a new capability that lets you replicate keys from one AWS Region into another. With multi-Region keys, you can more easily move encrypted data between Regions without having to decrypt and re-encrypt with different keys in each Region.
What is the Arn of a KMS key?
The key ARN is the Amazon Resource Name (ARN) of a KMS key. It is a unique, fully qualified identifier for the KMS key. A key ARN includes the AWS account, Region, and the key ID. For help finding the key ARN of a KMS key, see Finding the key ID and ARN . The following is an example key ARN for a single-Region KMS key.
What is AWS KMS?
AWS KMS makes it easy for you to create and manage cryptographic keys and control their use across a wide range of AWS services and in your applications. AWS KMS is a secure and resilient service that uses hardware security modules that have been validated under FIPS 140-2.
Is KMS global or regional?
Even though KMS is a global service but keys are regional that means you can't send keys outside the region in which they are created.
Is AWS KMS global or regional?
From its inception, AWS KMS has been strictly isolated to a single AWS Region for each implementation, with no sharing of keys, policies, or audit information across Regions. Region isolation can help you comply with security standards and data residency requirements.
Does AWS KMS works on all AWS services?
Yes. AWS KMS is supported in AWS SDKs, AWS Encryption SDK, the Amazon DynamoDB Client-side Encryption, and the Amazon S3 Encryption Client to facilitate encryption of data within your own applications wherever they run.
How do KMS keys work?
Create a data key AWS KMS generates the data key. Then it encrypts a copy of the data key under a symmetric encryption KMS key that you specify. The operation returns a plaintext copy of the data key and the copy of the data key encrypted under the KMS key.
Are AWS KMS keys Regional?
Neither AWS nor AWS KMS ever automatically creates or replicates multi-Region keys into any Region on your behalf. AWS managed keys, the KMS keys that AWS services create in your account for you, are always single-Region keys.
What is the difference between KMS and CloudHSM?
The difference between KMS and CloudHSM is that you control your keys with CloudHSM. CloudHSM gives a single-tenant multi-AZ cluster, and it's exclusive to you. KMS is multitenant; however, it uses HSMs within, but those are distributed over customer accounts, so it's not exclusive only for you.
What are the 3 types of KMS keys?
3 Types of Keys in AWS KMSAWS managed keys are created by AWS on behalf of the customer. ... Customer managed keys are created by the customer and provide many more control options over configurations.Custom key stores are supported by AWS CloudHSM clusters and is certified at FIPS 140-2 Level.
Can I bring my own keys to AWS KMS?
Back in 2016, AWS Key Management Service (AWS KMS) announced the ability to bring your own keys (BYOK) for use with KMS-integrated AWS services and custom applications. This feature allows you more control over the creation, lifecycle, and durability of your keys.
Can KMS keys be automatically rotated?
You cannot automatically rotate asymmetric KMS keys, HMAC KMS keys, KMS keys with imported key material, or KMS keys in custom key stores. However, you can rotate them manually. Select or clear the Automatically rotate this KMS key every year check box.
Can KMS keys be used across regions?
AWS Key Management Service (AWS KMS) is introducing multi-Region keys, a new capability that lets you replicate keys from one AWS Region into another. With multi-Region keys, you can more easily move encrypted data between Regions without having to decrypt and re-encrypt with different keys in each Region.
Are KMS keys encrypted?
Encrypt data in your applications AWS KMS is integrated with the AWS Encryption SDK to enable you to used KMS-protected data encryption keys to encrypt locally within your applications. Using simple APIs you can also build encryption and key management into your own applications wherever they run.
What is the difference between KMS and MAK?
Key Management Service (KMS) allows organizations to activate systems within their own network. Multiple Activation Key (MAK) activates systems on a one-time basis, using Microsoft's hosted activation services.
Which AWS services are global or regional?
We all know Route53, IAM, CloudFront, WAF are Global. But also, according to AWS docs: "Due to the nature of the service, some AWS services are delivered globally rather than regionally, such as Amazon Route 53, Amazon Chime, Amazon WorkDocs, Amazon WorkMail, Amazon WorkSpaces, Amazon WorkLink."
Which AWS services are defined as global instead of regional?
S3, IAM, Route 53, CloudFront, WAF, and SNS are all Global.
Which AWS services are not region specific?
Some services are classed as global services, such as AWS Identity & Access Management (IAM) or Amazon CloudFront, which means that these services are not tied to a specific region.
Which AWS services are regional in scope?
AWS Regional Services ListUS East (N. Virginia)US East (Ohio)US West (Northern California)US West (Oregon)Africa (Cape Town)Asia Pacific (Hong Kong)Asia Pacific (Jakarta)Asia Pacific (Mumbai)More items...
Multi-Region key
A multi-Region key is one of a set of KMS keys with the same key ID and key material (and other shared properties) in different AWS Regions. Each multi-Region key is a fully functioning KMS key that can be used entirely independently of its related multi-Region keys.
Primary key
A multi-Region primary key is a KMS key that can be replicated into other AWS Regions in the same partition. Each set of multi-Region keys has just one primary key.
Replica key
A multi-Region replica key is a KMS key that has the same key ID and key material as its primary key and related replica keys, but exists in a different AWS Region.
Replicate
You can replicate a multi-Region primary key into a different AWS Region in the same partition. When you do, AWS KMS creates a multi-Region replica key in the specified Region with the same key ID and other shared properties as its primary key.
Shared properties
Shared properties are properties of a multi-Region primary key that are shared with its replica keys. AWS KMS creates the replica keys with the same shared property values as those of the primary key. Then, it periodically synchronizes the shared property values of the primary key to its replica keys.
General
Q: What is AWS Key Management Service (KMS)? AWS KMS is a managed service that enables you to easily create and control the keys used for cryptographic operations.
Custom Key Store
Q: What is a custom key store? The AWS KMS custom key store feature combines the controls provided by AWS CloudHSM with the integration and ease of use of AWS KMS. You can configure your own CloudHSM cluster and authorize AWS KMS to use it as a dedicated key store for your keys rather than the default AWS KMS key store.
Billing
Q: How will I be charged and billed for my use of AWS KMS? With AWS KMS, you pay only for what you use, there is no minimum fee. There are no set-up fees or commitments to begin using the service. At the end of the month, your credit card will automatically be charged for that month’s usage.
Security
Q: Who can use and manage my keys in AWS KMS? AWS KMS enforces usage and management policies that you define. You choose to allow AWS Identity and Access Management (IAM) users and roles from your account or other accounts to use and manage your keys.
AWS KMS keys
AWS KMS keys (KMS keys) are the primary resource in AWS KMS. You can use a KMS key to encrypt, decrypt, and re-encrypt data. It can also generate data keys that you can use outside of AWS KMS. Typically, you'll use symmetric KMS keys, but you can create and use asymmetric KMS keys for encryption or signing.
Data keys
Data keys are encryption keys you can use to encrypt data, including large amounts of data and other data encryption keys. Unlike KMS keys, which can't be downloaded, data keys are returned to you for use outside of AWS KMS.
Data key pairs
Data key pairs are asymmetric data keys consisting of a mathematically-related public key and private key. They are designed for use in client-side encryption and decryption or signing and verification outside of AWS KMS.
Aliases
Use an alias as a friendly name for a KMS key. For example, you can refer to a KMS key as test-key instead of 1234abcd-12ab-34cd-56ef-1234567890ab.
Custom key stores
A custom key store is an AWS KMS resource associated with FIPS 140-2 Level 3 hardware security modules (HSMs) in a AWS CloudHSM cluster that you own and manage.
Cryptographic operations
In AWS KMS, cryptographic operations are API operations that use KMS keys to protect data. Because KMS keys remain within AWS KMS, you must call AWS KMS to use a KMS key in a cryptographic operation.
Key identifiers (KeyId)
Key identifiers act as names for your KMS keys. They help you to recognize your KMS keys in the console. You use them to indicate which KMS keys you want to use in AWS KMS API operations, key policies, IAM policies, and grants.
What port is KMS on?
By default, a KMS host is configured to use TCP on port 1688.
How does KMS work?
KMS hosts count the most recent connections. When a client or server contacts the KMS host, the host adds the machine ID to its count and then returns the current count value in its response. The client or server will activate if the count is high enough. Clients will activate if the count is 25 or higher. Servers and volume editions of Microsoft Office products will activate if the count is five or greater. The KMS only counts unique connections from the past 30 days, and only stores the 50 most recent contacts.
What is a KMS host key?
To use KMS, a KMS host needs a key that activates, or authenticates, the KMS host with Microsoft. This key is sometimes referred to as the KMS host key, but it is formally known as a Microsoft Customer Specific Volume License Key (CSVLK). You can get this key from the Product Keys section of the Volume Licensing Service Centerfor the following agreements: Open, Open Value, Select, Enterprise, and Services Provider License. You can also get assistance by contacting your local Microsoft Activation Center.
What is KMS activation?
KMS activation requires TCP/IP connectivity. KMS hosts and clients are configured by default to use Domain Name System (DNS). KMS hosts use DNS dynamic updates to automatically publish the information that KMS clients need to find and connect to them. You can accept these default settings, or if you have special network and security configuration requirements, you can manually configure KMS hosts and clients.
How many times can you reactivate a KMS host?
After a KMS host is activated, administrators can reactivate the same host up to nine times with the same key.
How often do you need to renew KMS?
KMS clients must renew their activation by connecting to the KMS host at least once every 180 days to stay activated. By default, KMS client computers attempt to renew their activation every seven days. After a client's activation is renewed, the activation validity interval begins again.
What is a KMS client?
KMS uses a client-server model to active clients and is used for volume activation. KMS clients connect to a KMS server, called the KMS host, for activation. The KMS host must reside on your local network.
Authorization basics for multi-Region keys
When designing key policies and IAM policies for multi-Region keys, consider the following principles.
Authorizing multi-Region key administrators and users
Principals who create and manage multi-Region keys need the following permissions in the primary and replica Regions:
Authorizing AWS KMS to synchronize multi-Region keys
To support multi-Region keys, AWS KMS uses an IAM service linked role. This role gives AWS KMS the permissions it needs to synchronize shared properties. You can view the SynchronizeMultiRegionKey CloudTrail event that records AWS KMS synchronizing shared properties in your AWS CloudTrail logs.
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