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25 lines
910 B
Markdown
25 lines
910 B
Markdown
# `TPM2_Duplicate()`
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`TPM2_Duplicate()` wraps a key, typically encrypting it to a public key
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for a key on a remote TPM.
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I.e., this is used to export a wrapped key for some target, typically a
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remote TPM.
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## Inputs
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- `TPMI_DH_OBJECT objectHandle` (handle for key to encrypt with)
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- `TPMI_DH_OBJECT newParentHandle` (optional; handle for key to wrap to -- "Only the public area of newParentHandle is required to be loaded")
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- `TPM2B_DATA encryptionKeyIn` (optional; symmetric key to encrypt with)
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- `TPMT_SYM_DEF_OBJECT+ symmetricAlg` ("definition for the symmetric algorithm to be used for the inner wrapper")
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## Outputs (success case)
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- `TPM2B_DATA encryptionKeyOut`
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- `TPM2B_PRIVATE duplicate`
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- `TPM2B_ENCRYPTED_SECRET outSymSeed`
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## References
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- [TCG TPM Library part 3: Commands, section 18.4](https://trustedcomputinggroup.org/wp-content/uploads/TCG_TPM2_r1p59_Part3_Commands_pub.pdf)
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