| # Java MAC example |
| |
| This example shows how to check the integrity of data with Tink using Message |
| Authentication Code (MAC). |
| |
| It demonstrates the basic steps of using Tink, namely loading key material, |
| obtaining a primitive, and using the primitive to do crypto. |
| |
| The key material was generated with: |
| |
| ```shell |
| tinkey create-keyset --key-template HMAC_SHA256_256BITTAG --out-format JSON \ |
| --out mac_test_keyset.json |
| ``` |
| |
| ## Build and run |
| |
| ### Bazel |
| |
| ```shell |
| git clone https://github.com/google/tink |
| cd tink/examples/java_src |
| bazel build ... |
| |
| echo "some data" > data.txt |
| touch mac_file.txt |
| |
| ./bazel-bin/mac/mac_example compute \ |
| ./mac/mac_test_keyset.json data.txt mac_file.txt |
| |
| ./bazel-bin/mac/mac_example verify \ |
| ./mac/mac_test_keyset.json data.txt mac_file.txt |
| ``` |
