Is cloud-provider encryption sufficient?

Default encryption provides good baseline protection. For sensitive data, use customer-managed keys for additional control. Highly regulated industries should consider customer-supplied keys or client-side encryption.

Does encryption affect performance?

Modern encryption has minimal impact. AES-256 is hardware-accelerated on modern CPUs, adding less than 5% overhead. TLS adds small initial latency but subsequent requests are unaffected.

What encryption does Australian compliance require?

The Privacy Act requires "reasonable steps" to protect data. At minimum: AES-256 at rest and TLS 1.2+ in transit. APRA-regulated entities must comply with CPS 234. Government agencies follow ISM guidelines.

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Encryption (Infrastructure)

Converting data into a coded format readable only by authorised parties with the decryption key, protecting confidentiality at rest and in transit across cloud infrastructure.

In-Depth Explanation

Encryption transforms readable data into an unreadable format using mathematical algorithms and keys. Only parties with the correct decryption key can convert it back.

Encryption types:

Symmetric (AES-256): Same key for encryption/decryption. Fast, used for data at rest
Asymmetric (RSA, ECDSA): Different keys for encryption/decryption. Used for key exchange and signatures
Hashing (SHA-256, bcrypt): One-way transformation for passwords and integrity

Cloud encryption layers:

At rest: Data encrypted on disk (databases, files, backups)
In transit: Data encrypted during transmission (TLS/HTTPS)
In use: Data encrypted during processing (emerging technology)
Client-side: Encrypted before sending to cloud
Server-side: Cloud encrypts on receipt

Key management models:

Cloud-managed: Simplest option, provider manages keys
Customer-managed (CMK): You control keys via cloud KMS
Customer-supplied: You provide keys per operation (most control)
HSM-backed: Dedicated hardware for key operations

Best practices:

Use AES-256 for data at rest
Use TLS 1.3 for data in transit
Rotate keys regularly
Separate keys by data classification
Never store keys with encrypted data
Implement proper key management lifecycle

Business Context

Encryption protects sensitive data, maintains customer trust, and ensures compliance with Australian Privacy Act requirements and industry regulations.

How Clever Ops Uses This

Clever Ops implements encryption strategies for Australian businesses, ensuring data protection at rest and in transit through cloud key management services.

Example Use Case

"A healthcare platform implements AES-256 for patient data at rest, TLS 1.3 in transit, and field-level encryption for Medicare numbers, all managed through AWS KMS with customer-managed keys."