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Co-authored-by: Malte Poll <mp@edgeless.systems> Co-authored-by: katexochen <katexochen@users.noreply.github.com> Co-authored-by: Daniel Weiße <dw@edgeless.systems> Co-authored-by: Thomas Tendyck <tt@edgeless.systems> Co-authored-by: Benedict Schlueter <bs@edgeless.systems> Co-authored-by: leongross <leon.gross@rub.de> Co-authored-by: Moritz Eckert <m1gh7ym0@gmail.com>
46 lines
879 B
Go
46 lines
879 B
Go
package vtpm
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import (
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"io"
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"github.com/google/go-tpm-tools/simulator"
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"github.com/google/go-tpm/tpm2"
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)
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const (
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// tpmPath is the path to the vTPM.
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tpmPath = "/dev/tpmrm0"
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)
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// TPMOpenFunc opens a TPM device.
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type TPMOpenFunc func() (io.ReadWriteCloser, error)
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// OpenVTPM opens the vTPM at `TPMPath`.
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func OpenVTPM() (io.ReadWriteCloser, error) {
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return tpm2.OpenTPM(tpmPath)
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}
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// OpenSimulatedTPM returns a simulated TPM device.
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func OpenSimulatedTPM() (io.ReadWriteCloser, error) {
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return simulator.Get()
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}
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type nopTPM struct{}
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// OpenNOPTPM returns a NOP io.ReadWriteCloser that can be used as a TPM.
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func OpenNOPTPM() (io.ReadWriteCloser, error) {
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return &nopTPM{}, nil
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}
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func (t nopTPM) Read(p []byte) (int, error) {
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return len(p), nil
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}
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func (t nopTPM) Write(p []byte) (int, error) {
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return len(p), nil
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}
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func (t nopTPM) Close() error {
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return nil
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}
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