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psa_copy_key: minor documentation clarification

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Gilles Peskine 2019-02-05 20:26:09 +01:00
parent 6b156df1ba
commit aec5a7fd49
1 changed files with 4 additions and 3 deletions
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7
include/psa/crypto.h
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@ -668,11 +668,12 @@ psa_status_t psa_export_public_key(psa_key_handle_t handle,
*
* Copy key material from one location to another.
*
* This function is primarily useful to copy a key from one lifetime
* to another. The target key retains its lifetime and location.
* This function is primarily useful to copy a key from one location
* to another, since it populates a key using the material from
* another key which may have a different lifetime.
*
* In an implementation where slots have different ownerships,
* this functin may be used to share a key with a different party,
* this function may be used to share a key with a different party,
* subject to implementation-defined restrictions on key sharing.
* In this case \p constraint would typically prevent the recipient
* from exporting the key.