ref: 2bbc75bddc6f2a07056ff017108e35f14061041b dir: /third_party/boringssl/src/ssl/test/runner/ed25519_key.pem/
-----BEGIN PRIVATE KEY----- MC4CAQAwBQYDK2VwBCIEIJ1hsZ3v/VpguoRK9JLsLMREScVpezJpGXA7rAMcrn9g -----END PRIVATE KEY-----