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42 lines
1.3 KiB
Markdown
42 lines
1.3 KiB
Markdown
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# Authentication
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As outlined in the [gRPC authentication guide](https://grpc.io/docs/guides/auth.html) there are a number of different mechanisms for asserting identity between an client and server. We'll present some code-samples here demonstrating how to provide TLS support encryption and identity assertions as well as passing OAuth2 tokens to services that support it.
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# Enabling TLS on a gRPC client
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```Go
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conn, err := grpc.Dial(serverAddr, grpc.WithTransportCredentials(credentials.NewClientTLSFromCert(nil, "")))
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```
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# Enabling TLS on a gRPC server
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```Go
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creds, err := credentials.NewServerTLSFromFile(certFile, keyFile)
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if err != nil {
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log.Fatalf("Failed to generate credentials %v", err)
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}
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lis, err := net.Listen("tcp", ":0")
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server := grpc.NewServer(grpc.Creds(creds))
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...
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server.Serve(lis)
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```
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# Authenticating with Google
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## Google Compute Engine (GCE)
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```Go
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conn, err := grpc.Dial(serverAddr, grpc.WithTransportCredentials(credentials.NewClientTLSFromCert(nil, "")), grpc.WithPerRPCCredentials(oauth.NewComputeEngine()))
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```
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## JWT
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```Go
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jwtCreds, err := oauth.NewServiceAccountFromFile(*serviceAccountKeyFile, *oauthScope)
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if err != nil {
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log.Fatalf("Failed to create JWT credentials: %v", err)
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}
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conn, err := grpc.Dial(serverAddr, grpc.WithTransportCredentials(credentials.NewClientTLSFromCert(nil, "")), grpc.WithPerRPCCredentials(jwtCreds))
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```
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