mbedtls_psa_cipher_update() function

Encrypt or decrypt a message fragment in an active cipher operation.

Syntax

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Summary

Declaration

Definition

from psa_crypto_cipher.h:161

psa_status_t mbedtls_psa_cipher_update( mbedtls_psa_cipher_operation_t *operation, const uint8_t *input, size_t input_length, uint8_t *output, size_t output_size, size_t *output_length);

Implemented in psa_crypto_cipher.c:499

Arguments

Argument

Description

operation

Active cipher operation.

input

Buffer containing the message fragment to encrypt or decrypt.

input_length

Size of the \p input buffer in bytes.

output

Buffer where the output is to be written.

output_size

Size of the \p output buffer in bytes.

output_length

On success, the number of bytes that make up the returned output.

Return value

#PSA_SUCCESS \emptydescription #PSA_ERROR_BUFFER_TOO_SMALL The size of the \p output buffer is too small. #PSA_ERROR_INSUFFICIENT_MEMORY \emptydescription

Notes

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