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hash_clone: Fix copypasta and add a functional description

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This commit is contained in:
Gilles Peskine 2019-01-21 14:50:37 +01:00
parent ebb2c3e419
commit e43aa39397
1 changed files with 10 additions and 1 deletions
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11
include/psa/crypto.h
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@ -922,6 +922,15 @@ psa_status_t psa_hash_verify(psa_hash_operation_t *operation,
psa_status_t psa_hash_abort(psa_hash_operation_t *operation);
/** Clone a hash operation.
*
* This function copies the state of an ongoing hash operation to
* a new operation object. In other words, this function is equivalent
* to calling psa_hash_setup() on \p target_operation with the same
* algorithm that \p source_operation was set up for, then
* psa_hash_update() on \p target_operation with the same input that
* that was passed to \p source_operation. After this function returns, the
* two objects are independent, i.e. subsequent calls involving one of
* the objects do not affect the other object.
*
* \param[in] source_operation The active hash operation to clone.
* \param[in,out] target_operation The operation object to set up.
@ -931,7 +940,7 @@ psa_status_t psa_hash_abort(psa_hash_operation_t *operation);
* \retval #PSA_ERROR_BAD_STATE
* \p source_operation is not an active hash operation.
* \retval #PSA_ERROR_BAD_STATE
* \p source_operation is active.
* \p target_operation is active.
* \retval #PSA_ERROR_COMMUNICATION_FAILURE
* \retval #PSA_ERROR_HARDWARE_FAILURE
* \retval #PSA_ERROR_TAMPERING_DETECTED