mbedtls_psa_hash_clone() function

Clone an Mbed TLS 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 mbedtls_psa_hash_setup() on \p target_operation with the same algorithm that \p source_operation was set up for, then mbedtls_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.

Syntax

Show:

Summary

Declaration

Definition

from psa_crypto_hash.h:112

psa_status_t mbedtls_psa_hash_clone( const mbedtls_psa_hash_operation_t *source_operation, mbedtls_psa_hash_operation_t *target_operation);

Implemented in psa_crypto_hash.c:182

Arguments

Argument

Description

source_operation

The active hash operation to clone.

target_operation

The operation object to set up. It must be initialized but not active.

Return value

#PSA_SUCCESS \emptydescription #PSA_ERROR_BAD_STATE The \p source_operation state is not valid (it must be active). #PSA_ERROR_BAD_STATE The \p target_operation state is not valid (it must be inactive). #PSA_ERROR_CORRUPTION_DETECTED \emptydescription #PSA_ERROR_INSUFFICIENT_MEMORY \emptydescription

Notes

The signature of this function is that of a PSA driver hash_clone entry point. This function behaves as a hash_clone entry point as defined in the PSA driver interface specification for transparent drivers.