1*e7b1675dSTing-Kang Chang# Java AEAD example 2*e7b1675dSTing-Kang Chang 3*e7b1675dSTing-Kang ChangThis example shows how to encrypt data with Tink using Authenticated Encryption 4*e7b1675dSTing-Kang Changwith Associated Data (AEAD). 5*e7b1675dSTing-Kang Chang 6*e7b1675dSTing-Kang ChangIt demonstrates the basic steps of using Tink, namely loading key material, 7*e7b1675dSTing-Kang Changobtaining a primitive, and using the primitive to do crypto. 8*e7b1675dSTing-Kang Chang 9*e7b1675dSTing-Kang ChangThe key material was generated with Tinkey: 10*e7b1675dSTing-Kang Chang 11*e7b1675dSTing-Kang Chang```shell 12*e7b1675dSTing-Kang Changtinkey create-keyset --key-template AES128_GCM --out-format JSON \ 13*e7b1675dSTing-Kang Chang --out aead_test_keyset.json 14*e7b1675dSTing-Kang Chang``` 15*e7b1675dSTing-Kang Chang 16*e7b1675dSTing-Kang Chang## Build and run 17*e7b1675dSTing-Kang Chang 18*e7b1675dSTing-Kang Chang### Bazel 19*e7b1675dSTing-Kang Chang 20*e7b1675dSTing-Kang Chang```shell 21*e7b1675dSTing-Kang Changgit clone https://github.com/google/tink 22*e7b1675dSTing-Kang Changcd tink/examples/java_src 23*e7b1675dSTing-Kang Changbazel build ... 24*e7b1675dSTing-Kang Chang``` 25*e7b1675dSTing-Kang Chang 26*e7b1675dSTing-Kang ChangEncrypt a file: 27*e7b1675dSTing-Kang Chang 28*e7b1675dSTing-Kang Chang```shell 29*e7b1675dSTing-Kang Changecho "some data" > testdata.txt 30*e7b1675dSTing-Kang Chang 31*e7b1675dSTing-Kang Chang./bazel-bin/aead/aead_example encrypt \ 32*e7b1675dSTing-Kang Chang ./aead/aead_test_keyset.json \ 33*e7b1675dSTing-Kang Chang testdata.txt testdata.txt.encrypted 34*e7b1675dSTing-Kang Chang``` 35*e7b1675dSTing-Kang Chang 36*e7b1675dSTing-Kang ChangDecrypt a file: 37*e7b1675dSTing-Kang Chang 38*e7b1675dSTing-Kang Chang```shell 39*e7b1675dSTing-Kang Chang./bazel-bin/aead/aead_example decrypt \ 40*e7b1675dSTing-Kang Chang ./aead/aead_test_keyset.json \ 41*e7b1675dSTing-Kang Chang testdata.txt.encrypted testdata.txt.decrypted 42*e7b1675dSTing-Kang Chang 43*e7b1675dSTing-Kang Changdiff testdata.txt testdata.txt.decrypted 44*e7b1675dSTing-Kang Chang``` 45