godot/thirdparty/mbedtls/library/psa_crypto_aead.c

/*
 *  PSA AEAD entry points
 */
/*
 *  Copyright The Mbed TLS Contributors
 *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
 */

#include "common.h"

#if defined(MBEDTLS_PSA_CRYPTO_C)

#include "psa_crypto_aead.h"
#include "psa_crypto_core.h"
#include "psa_crypto_cipher.h"

#include <string.h>
#include "mbedtls/platform.h"

#include "mbedtls/ccm.h"
#include "mbedtls/chachapoly.h"
#include "mbedtls/cipher.h"
#include "mbedtls/gcm.h"
#include "mbedtls/error.h"

static psa_status_t psa_aead_setup(
    mbedtls_psa_aead_operation_t *operation,
    const psa_key_attributes_t *attributes,
    const uint8_t *key_buffer,
    size_t key_buffer_size,
    psa_algorithm_t alg)
{ … }

psa_status_t mbedtls_psa_aead_encrypt(
    const psa_key_attributes_t *attributes,
    const uint8_t *key_buffer, size_t key_buffer_size,
    psa_algorithm_t alg,
    const uint8_t *nonce, size_t nonce_length,
    const uint8_t *additional_data, size_t additional_data_length,
    const uint8_t *plaintext, size_t plaintext_length,
    uint8_t *ciphertext, size_t ciphertext_size, size_t *ciphertext_length)
{ … }

/* Locate the tag in a ciphertext buffer containing the encrypted data
 * followed by the tag. Return the length of the part preceding the tag in
 * *plaintext_length. This is the size of the plaintext in modes where
 * the encrypted data has the same size as the plaintext, such as
 * CCM and GCM. */
static psa_status_t psa_aead_unpadded_locate_tag(size_t tag_length,
                                                 const uint8_t *ciphertext,
                                                 size_t ciphertext_length,
                                                 size_t plaintext_size,
                                                 const uint8_t **p_tag)
{ … }

psa_status_t mbedtls_psa_aead_decrypt(
    const psa_key_attributes_t *attributes,
    const uint8_t *key_buffer, size_t key_buffer_size,
    psa_algorithm_t alg,
    const uint8_t *nonce, size_t nonce_length,
    const uint8_t *additional_data, size_t additional_data_length,
    const uint8_t *ciphertext, size_t ciphertext_length,
    uint8_t *plaintext, size_t plaintext_size, size_t *plaintext_length)
{ … }

/* Set the key and algorithm for a multipart authenticated encryption
 * operation. */
psa_status_t mbedtls_psa_aead_encrypt_setup(
    mbedtls_psa_aead_operation_t *operation,
    const psa_key_attributes_t *attributes,
    const uint8_t *key_buffer,
    size_t key_buffer_size,
    psa_algorithm_t alg)
{ … }

/* Set the key and algorithm for a multipart authenticated decryption
 * operation. */
psa_status_t mbedtls_psa_aead_decrypt_setup(
    mbedtls_psa_aead_operation_t *operation,
    const psa_key_attributes_t *attributes,
    const uint8_t *key_buffer,
    size_t key_buffer_size,
    psa_algorithm_t alg)
{ … }

/* Set a nonce for the multipart AEAD operation*/
psa_status_t mbedtls_psa_aead_set_nonce(
    mbedtls_psa_aead_operation_t *operation,
    const uint8_t *nonce,
    size_t nonce_length)
{ … }

/* Declare the lengths of the message and additional data for AEAD. */
psa_status_t mbedtls_psa_aead_set_lengths(
    mbedtls_psa_aead_operation_t *operation,
    size_t ad_length,
    size_t plaintext_length)
{ … }

/* Pass additional data to an active multipart AEAD operation. */
psa_status_t mbedtls_psa_aead_update_ad(
    mbedtls_psa_aead_operation_t *operation,
    const uint8_t *input,
    size_t input_length)
{ … }

/* Encrypt or decrypt a message fragment in an active multipart AEAD
 * operation.*/
psa_status_t mbedtls_psa_aead_update(
    mbedtls_psa_aead_operation_t *operation,
    const uint8_t *input,
    size_t input_length,
    uint8_t *output,
    size_t output_size,
    size_t *output_length)
{ … }

/* Finish encrypting a message in a multipart AEAD operation. */
psa_status_t mbedtls_psa_aead_finish(
    mbedtls_psa_aead_operation_t *operation,
    uint8_t *ciphertext,
    size_t ciphertext_size,
    size_t *ciphertext_length,
    uint8_t *tag,
    size_t tag_size,
    size_t *tag_length)
{ … }

/* Abort an AEAD operation */
psa_status_t mbedtls_psa_aead_abort(
    mbedtls_psa_aead_operation_t *operation)
{ … }

#endif /* MBEDTLS_PSA_CRYPTO_C */