tink-crypto / tink-crypto/tink-java

Convert AeadParameters to KeyTemplate and vice versa

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Dominant language
Java
Stars
305
Forks
42
PR merge metrics
No merged PRs in 30d

Description

Is your feature request related to a problem?
We are using the Aead Evenlope encryption. We are planning to store the DEK KeyTemplate with the encrypted data so that we know which template to use for decryption.
What is the intended way to come from an KeyTemplate to the related Parameters?

template = AeadKeyTemplates.createKmsEnvelopeAeadKeyTemplate(reference.getKeyURI(), AeadKeyTemplates.AES128_GCM);

parameters = /* ? */

Aead aead = KmsEnvelopeAead.create(parameters, remoteAead);

What sort of feature would you like to see?
Util method to convert AeadParameters to a KeyTempleate and vice versa

Have you considered any alternative solutions?
We ware not able to figure out how to convert parameters to key templates

Thx, Regards

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Research direction

Start by reading AeadParameters, KeyTemplate, AeadKeyTemplates.createKmsEnvelopeAeadKeyTemplate, and KmsEnvelopeAead.create to understand the two representations and their existing relationship. The issue is complete when the intended conversions are defined and a utility approach, including its expected behavior, is established for both directions.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
cryptography
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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