https://boringssl.googlesource.com/boringssl/+/1b91d26b466b29c6c0b32bf8b1c2bf627faad07a/crypto/hpke/hpke_test_vectors.txt?autodive=0%2F
crypto/hpke/hpke_test_vectors.txt - boringssl - Git at Google
cryptohpketestvectorstxt
https://fuchsia.googlesource.com/third_party/tink/+/053b5b8c4214ec379daac2cc2bf208c51cc1cd66/cc/hybrid/internal/hpke_encrypt.cc
cc/hybrid/internal/hpke_encrypt.cc - third_party/tink - Git at Google
third partyhybridinternalhpkeencrypt