mbedtls_psa_hash_compute() function

Calculate the hash (digest) of a message using Mbed TLS routines.

Syntax

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Summary

Declaration

Definition

from psa_crypto_hash.h:40

psa_status_t mbedtls_psa_hash_compute( psa_algorithm_t alg, const uint8_t *input, size_t input_length, uint8_t *hash, size_t hash_size, size_t *hash_length);

Implemented in psa_crypto_hash.c:433

Arguments

Argument

Description

alg

The hash algorithm to compute (\c PSA_ALG_XXX value such that #PSA_ALG_IS_HASH(\p alg) is true).

input

Buffer containing the message to hash.

input_length

Size of the \p input buffer in bytes.

hash

Buffer where the hash is to be written.

hash_size

Size of the \p hash buffer in bytes.

hash_length

On success, the number of bytes that make up the hash value. This is always #PSA_HASH_LENGTH(\p alg).

Return value

#PSA_SUCCESS Success. #PSA_ERROR_NOT_SUPPORTED \p alg is not supported #PSA_ERROR_BUFFER_TOO_SMALL \p hash_size is too small #PSA_ERROR_INSUFFICIENT_MEMORY \emptydescription #PSA_ERROR_CORRUPTION_DETECTED \emptydescription

Notes

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