Aws S3 Upload Encrypted Using Rest Api

April 13, 2022 Post a Comment

AWS S3 Encryption

How To — Secure data via encryption in AWS S3

People shy away from deject due to the ambivalence of information security. Security of data utilizes various services and their encryption properties. Encrypting data pertains to encoding information to prevent others from understanding information.

Data Encryption —

Information technology involves converting plain text, using an encryption algorithm and key, into ciphertext. The ciphertext is accessible using encryption, or rather, a decryption cardinal.

Symmetric Key Encryption — Involves but i encryption key to encrypt and decrypt text. This method is less secure equally it requires exchanging the data and encryption key before decryption. It provides confidentiality.
Examples — RC4, AES, DES, 3DES, etc

Asymmetric Fundamental Encryption — The text is encrypted and decrypted using different keys; public and individual. This method is more secure than symmetric central encryption. However, the encryption process is much slower. Information technology provides confidentiality, authenticity and not-repudiation.
Examples — RSA, DSA, Diffie-Hellman, ECC, etc

Types of Encryption

ane. Encryption at Balance — It refers to encrypted data stored in any storage device, either physical or virtual. It protects information stored in a database or server. Information encryption is done before transfer. Information decryption and verification is done on arrival at the destination.

2. Encryption in Transit — Encrypted information moving betwixt ii different networks or devices. It ensures information protection when servers or applications communicate. AWS S3 enables advice via SSL or using client-side encryption.

AWS S3 Encryption Mechanisms

S3 supports both server-side and customer-side encryption. It supports encryption in transit via SSL/TLS — Secure Sockets Layer/Send Layer Security.

Server-side Encryption

It involves the encryption or decryption of information at its destination. It protects data at rest and only encrypts objects, non their metadata. S3 offers Server-Side Encryption with Amazon S3-Managed Keys (SSE-S3), Server-Side Encryption with AWS Cardinal Direction Service (SSE-KMS) and Server-Side Encryption with Customer-Provided Keys (SSE-C). An S3 object cannot be encrypted using different methods simultaneously.

Client-side Encryption

It involves the encryption or decryption of data in the customer environment and uploading information technology to S3. S3 supports Client-Side Encryption with AWS Key Management Service (CSE-KMS) and Client-Side Encryption with Customer Managed Keys (CSE-C). Storing the encryption key tin on the client-side or server-side is possible. While storing an encryption key on the client-side, the client must take responsibility for encryption. AWS will not know the encryption keys of the client. This data is never stored in S3 in an unencrypted state. Client keys and data are never stored in S3 in an unencrypted land.

AWS S3 Default Encryption

AWS S3 Management Console — Encryption Options

AWS S3 default encryption encrypts objects during uploading
For existing buckets, the existing objects are not encrypted after enabling this option
Enable the default encryption from the AWS direction console in the bucket backdrop tile
Default encryption tin can too exist enabled via —

AWS CLI
AWS SDKs
Residuum API

There are two encryption options including AES-256 and AWS-KMS —

(i) SSE-S3 (AES-256) — Information technology offers server-side encryption on S3 and is an S3 managed key. AWS S3 encrypts an object earlier saving information technology to disk and decrypts the objects during download.

(ii) SSE-KMS (AWS-KMS) — It offers server-side encryption managed past the key management service. It provides greater flexibility in managing the keys.

Server-side Encryption with S3 Managed Keys (SSE-S3)

This mechanism is fully-managed by AWS S3 and requires minimal configurations
Enable the default SSE-S3 encryption option for an S3 bucket and upload the objects
AWS S3 will manage the object encryption process
Enabling the default encryption is gratuitous, but costs are incurred for configuration requests

Server-side Encryption with S3 Managed Keys (SSE-S3)

Server-side Encryption with KMS managed keys (SSE-KMS)

This mechanism uses keys from the Primal Management Service (KMS)
Enable the default SSE-S3 encryption option for an S3 bucket and upload the objects
AWS S3 will manage the object encryption process by using the key provided by KMS
Keys can either be S3 provided or client-managed
The keys must be stored in the aforementioned region as the S3 bucket
Additional charges are incurred for KMS key storage, calls made from S3 to KMS

Server-side Encryption with KMS managed keys (SSE-KMS)

Server-side Encryption with Customer managed keys (SSE-C)

This mechanism allows customers to provide their keys for encryption
The data and primal are sent together to S3 and S3 performs the encryption
No code is required to perform data encryption and decryption
The only thing the client need to do is manage the encryption keys they provide
S3 does non store the key

Server-side Encryption with Client managed keys (SSE-C)

Client-side Encryption with KMS managed Keys (CSE-KMS)

Use the Key Direction Service (KMS) to generate data encryption keys
S3 does not asking KMS for the keys, rather the client does
Encryption is washed on the customer-side and then the encrypted data is sent to S3

Client-side Encryption with KMS managed Keys (CSE-KMS)

Client-side Encryption with Client managed keys (CSE-C)

Clients can use their keys to encrypt data
An AWS SDK client tin can be used to encrypt information before sending it to S3

Customer-side Encryption with Customer managed keys (CSE-C)

Conclusion

AWS S3 encryption protects information stored in AWS S3 buckets in the cloud. This is important for saving sensitive data. Encryption tin be performed on the server-side or client-side. S3 buckets have the property to enable encryption when creating a bucket. For existing buckets and objects, enabling encryption for those objects is also possible. Existing objects are not encrypted afterward enabling default encryption. Encrypting a bucket increases the security level and protects information against access by third parties.