Field-Level Encryption for Sensitive Data
Protect sensitive fields such as names, SSNs, payment data, account numbers, and emails without relying only on database, disk, or table-level controls. Ubiq protects sensitive values and returns either the unprotected value or a configured protected representation at runtime based on identity, context, and policy.
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CMMC 2.0 Level 1What is field-level encryption?
Field-level encryption protects specific sensitive fields or columns instead of encrypting an entire database, disk, file, or table. In database environments, this is often implemented as column-level encryption inside a specific database. In application or client-side models, values may be encrypted before they are written to the database. These approaches are related, but they have different deployment models, limitations, and operational trade-offs.
Protection scoped to specific values
Instead of encrypting a whole disk, file, or database, field-level and column-level encryption protect the specific sensitive values that matter, such as names, SSNs, payment data, account numbers, and emails.
Database-native protection is tied to its database
Database-native field and column encryption protect selected fields inside the database where the control is configured. If data is exported, streamed, replicated, or moved into another system, teams often need to decrypt, re-protect, or rebuild equivalent controls in the destination environment.
Identity-based reveal with Ubiq
Ubiq protects sensitive values and applies centralized identity, context, and policy at runtime, returning either the unprotected value or a configured protected representation based on the requesting identity, application, service account, API, or workflow.
Database field-level encryption protects columns inside a database. Ubiq protects sensitive values and controls what each identity receives at runtime.
Field-level encryption can mean different architectures
Field-level encryption describes related approaches with different deployment models, limitations, and operational trade-offs.
Database column-level encryption
Encryption is configured inside a specific database for selected columns. It protects data in that database, but is platform-specific and often brings query, replication, export, admin, and licensing trade-offs.
Application or client-side field encryption
Values are encrypted before they are written to the database. This can reduce database-side plaintext exposure, but often requires application logic, driver support, key handling, and query changes.
Ubiq value-level protection
Ubiq protects sensitive values and applies identity, context, and policy at runtime, returning either the unprotected value or a configured protected representation.
What database field-level encryption does
Database-native field and column encryption protect selected values inside the database where the control is configured. Here is how that pattern works, and where its scope ends.
Application writes record
Sensitive values are sent to the database for storage.
Database with selected encrypted columns
| Column | Stored value |
|---|---|
| Customer ID | CUST-10482 |
| Name | Maria Chen |
| SSN | Encrypted |
| Card number | Encrypted or format-preserving protected |
| Encrypted or protected |
Authorized path decrypts values
An authorized database or application path returns cleartext.
Configured per database
Protects selected columns inside that database
Decryption happens through the database or application path
Exports, streams, and replication require separate handling
Query and feature limitations may apply
Not a centralized control across every database, app, warehouse, API, and AI workflow
Database field-level and column-level encryption protect selected values inside one database. Their scope ends at the edge of that database.
What field-level encryption does not solve
Field-level and column-level encryption protect selected values, but the way they are usually deployed leaves real gaps. Not every form of field-level encryption has the same weakness, so these limitations depend on whether protection is database-native, application-side, or client-side.
Database-specific control
Column encryption is usually configured database by database. It does not automatically become a centralized protection layer across every database, warehouse, application, API, and AI workflow.
Protection does not automatically move downstream
When data is exported, streamed, replicated, or loaded into another environment, teams often need to decrypt, re-protect, or rebuild equivalent controls in the next system.
Database processing and query limitations
Database-native encryption can introduce SQL-layer overhead, query limitations, indexing constraints, and feature incompatibilities. This is not primarily a proxy-latency problem. It is a database processing, query, and functionality problem.
Privileged access remains a concern
Database-native encryption may still leave plaintext exposure through privileged database or application paths. Client-side encryption models can reduce database administrator access to plaintext, but they often introduce application changes, query limitations, and platform-specific operational complexity.
Hard to scale across many databases
A database feature enabled one system at a time does not scale cleanly across hundreds of databases, warehouses, applications, APIs, and AI workflows. Teams end up managing different controls, key models, policies, and operational processes across each environment.
Cost and licensing can multiply
Database-native encryption can become expensive when each database platform, edition, or environment requires separate configuration, licensing, and operational management.
Ubiq protects the value itself, then returns the right protected or unprotected version at runtime based on identity, context, and policy.
How Ubiq works
Same sensitive data. Different identities. Different runtime outcomes.
Once a value is protected, Ubiq evaluates the requesting identity, context, and policy at runtime, then returns either the unprotected value or a configured protected representation that identity is authorized to receive.
Access request
Protected employee record
- Employee ID
- EMP-3X9Q-1182
- Name
- Maria Chen
- maria@acme.com
- Salary
- $142,800
Real-time evaluation
Runtime data outcome
HR app
CleartextAuthorized to process the full employee record
Support analyst
MaskedNeeds to confirm the record, not read all fields
Analytics API
TokenizedAuthorized for analysis without exposing original identifiers
AI agent
EncryptedOperates on ciphertext, never cleartext
Protected once. Resolved differently at runtime for each identity.
Where teams use field-level encryption
Field-level and column-level encryption let teams protect specific regulated values without locking down the whole system. These are the workflows where it matters most.
Payment and cardholder data
Protect PAN and cardholder values so payment workflows receive the right unprotected or protected representation based on identity and policy, reducing unnecessary plaintext exposure across billing, ledgers, analytics, and downstream workflows.
PII and PHI
Protect names, SSNs, health identifiers, and other regulated fields so direct database access, backups, extracts, and downstream workflows do not broadly expose cleartext.
Analytics, BI, and data warehouses
Return approved protected representations to dashboards and queries so analysts can work with governed data without broad access to raw identifiers.
AI, RAG, and agent workflows
Keep sensitive source fields protected and identity-governed while AI, retrieval, and agent workflows operate through approved representations and policy-controlled access paths.
Multi-tenant and SaaS data isolation
Protect tenant-sensitive fields with application or client-side patterns so a single query or misconfiguration does not broadly expose another tenant's regulated data.
Overprivileged access and insider risk
Limit what broad DBA, admin, and service-account access can reveal by storing sensitive values protected and governing when unprotected values are returned through Ubiq-controlled paths.
Ubiq is built to fit your environment
Ubiq deploys inside your own environment and integrates where sensitive data already lives, so teams adopt it without heavy operational friction.
SDKs and APIs
Add protection with a few lines of code across major languages, live in minutes.
Database and warehouse integration
Protect and reveal values through SQL UDFs and native database and data warehouse integrations.
Application and API patterns
Integrate at applications, services, and API gateways without rearchitecting them.
Identity provider integration
Reuse your existing IAM so runtime decisions follow the identities you already manage.
Customer-managed keys
Bring your own HSM or KMS so key control stays with your team.
No agents, proxies, or schema changes
Deploy with no proxies in the data path and no database schema changes where applicable.
Frequently asked questions
What is field-level encryption?
Field-level encryption protects specific sensitive fields inside a record, such as a name, Social Security number, payment card, or email, instead of encrypting an entire disk, file, or database at once. In databases, this often means column-level encryption inside a specific database. In application or client-side models, values may be protected before they are written. Ubiq extends this with identity-governed runtime policy that determines whether a requester receives the unprotected value or a configured protected representation.
What is the difference between field-level encryption and column-level encryption?
Column-level encryption usually refers to encryption applied to specific columns inside a database. Field-level encryption is broader and can also describe application or client-side protection of individual values before they are written. Ubiq supports value-level protection patterns that work across applications, APIs, databases, warehouses, and AI workflows, with runtime policy determining whether an identity receives the unprotected value or a configured protected representation.
How is field-level encryption different from full-disk or transparent database encryption?
Full-disk and transparent database encryption (TDE) protect data at rest, but any identity with database or filesystem access still reads cleartext. Field-level and column-level encryption protect the specific values that matter, so a credential, query, or stored copy alone no longer exposes regulated data. Ubiq goes further and governs which identities can receive the unprotected value at runtime.
Does field-level encryption break my applications or database queries?
Database-native and client-side encryption can affect queries, indexes, joins, sorting, and application logic depending on the implementation. Ubiq supports multiple integration patterns, including SDKs, APIs, SQL UDFs, and database and warehouse integrations, so teams can choose the right protection pattern for each workflow while preserving format compatibility where needed.
How is Ubiq different from traditional field-level encryption?
Traditional database field or column encryption is usually configured inside a specific database and governs protection in that database. Ubiq protects sensitive values and applies centralized identity, context, and policy at runtime, returning either the unprotected value or a configured protected representation across applications, APIs, databases, warehouses, and AI workflows.
How does Ubiq handle encryption keys for field-level encryption?
Ubiq provides integrated key management so teams do not have to spread keys, crypto libraries, and decryption logic across services. Keys can be backed by a customer-managed HSM or KMS, and Ubiq deploys inside your environment so sensitive data and keys never leave your control.
Can field-level encryption help with PCI DSS, HIPAA, and GDPR compliance?
Yes. Protecting cardholder data, PII, and PHI at the field or column level reduces the systems that can expose regulated values in cleartext, which helps narrow PCI DSS, HIPAA, and GDPR scope. Because Ubiq governs which identities can receive the unprotected value at runtime, plaintext access is controlled by identity and policy rather than left open to any authorized service.