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thirdparty/mbedtls/library/psa_crypto_aead.h vendored Normal file
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/*
* PSA AEAD driver entry points
*/
/*
* Copyright The Mbed TLS Contributors
* SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
*/
#ifndef PSA_CRYPTO_AEAD_H
#define PSA_CRYPTO_AEAD_H
#include <psa/crypto.h>
/**
* \brief Process an authenticated encryption operation.
*
* \note The signature of this function is that of a PSA driver
* aead_encrypt entry point. This function behaves as an aead_encrypt
* entry point as defined in the PSA driver interface specification for
* transparent drivers.
*
* \param[in] attributes The attributes of the key to use for the
* operation.
* \param[in] key_buffer The buffer containing the key context.
* \param key_buffer_size Size of the \p key_buffer buffer in bytes.
* \param alg The AEAD algorithm to compute.
* \param[in] nonce Nonce or IV to use.
* \param nonce_length Size of the nonce buffer in bytes. This must
* be appropriate for the selected algorithm.
* The default nonce size is
* PSA_AEAD_NONCE_LENGTH(key_type, alg) where
* key_type is the type of key.
* \param[in] additional_data Additional data that will be authenticated
* but not encrypted.
* \param additional_data_length Size of additional_data in bytes.
* \param[in] plaintext Data that will be authenticated and encrypted.
* \param plaintext_length Size of plaintext in bytes.
* \param[out] ciphertext Output buffer for the authenticated and
* encrypted data. The additional data is not
* part of this output. For algorithms where the
* encrypted data and the authentication tag are
* defined as separate outputs, the
* authentication tag is appended to the
* encrypted data.
* \param ciphertext_size Size of the ciphertext buffer in bytes. This
* must be appropriate for the selected algorithm
* and key:
* - A sufficient output size is
* PSA_AEAD_ENCRYPT_OUTPUT_SIZE(key_type, alg,
* plaintext_length) where key_type is the type
* of key.
* - PSA_AEAD_ENCRYPT_OUTPUT_MAX_SIZE(
* plaintext_length) evaluates to the maximum
* ciphertext size of any supported AEAD
* encryption.
* \param[out] ciphertext_length On success, the size of the output in the
* ciphertext buffer.
*
* \retval #PSA_SUCCESS Success.
* \retval #PSA_ERROR_NOT_SUPPORTED
* \p alg is not supported.
* \retval #PSA_ERROR_INSUFFICIENT_MEMORY \emptydescription
* \retval #PSA_ERROR_BUFFER_TOO_SMALL
* ciphertext_size is too small.
* \retval #PSA_ERROR_CORRUPTION_DETECTED \emptydescription
*/
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);
/**
* \brief Process an authenticated decryption operation.
*
* \note The signature of this function is that of a PSA driver
* aead_decrypt entry point. This function behaves as an aead_decrypt
* entry point as defined in the PSA driver interface specification for
* transparent drivers.
*
* \param[in] attributes The attributes of the key to use for the
* operation.
* \param[in] key_buffer The buffer containing the key context.
* \param key_buffer_size Size of the \p key_buffer buffer in bytes.
* \param alg The AEAD algorithm to compute.
* \param[in] nonce Nonce or IV to use.
* \param nonce_length Size of the nonce buffer in bytes. This must
* be appropriate for the selected algorithm.
* The default nonce size is
* PSA_AEAD_NONCE_LENGTH(key_type, alg) where
* key_type is the type of key.
* \param[in] additional_data Additional data that has been authenticated
* but not encrypted.
* \param additional_data_length Size of additional_data in bytes.
* \param[in] ciphertext Data that has been authenticated and
* encrypted. For algorithms where the encrypted
* data and the authentication tag are defined
* as separate inputs, the buffer contains
* encrypted data followed by the authentication
* tag.
* \param ciphertext_length Size of ciphertext in bytes.
* \param[out] plaintext Output buffer for the decrypted data.
* \param plaintext_size Size of the plaintext buffer in bytes. This
* must be appropriate for the selected algorithm
* and key:
* - A sufficient output size is
* PSA_AEAD_DECRYPT_OUTPUT_SIZE(key_type, alg,
* ciphertext_length) where key_type is the
* type of key.
* - PSA_AEAD_DECRYPT_OUTPUT_MAX_SIZE(
* ciphertext_length) evaluates to the maximum
* plaintext size of any supported AEAD
* decryption.
* \param[out] plaintext_length On success, the size of the output in the
* plaintext buffer.
*
* \retval #PSA_SUCCESS Success.
* \retval #PSA_ERROR_INVALID_SIGNATURE
* The cipher is not authentic.
* \retval #PSA_ERROR_NOT_SUPPORTED
* \p alg is not supported.
* \retval #PSA_ERROR_INSUFFICIENT_MEMORY \emptydescription
* \retval #PSA_ERROR_BUFFER_TOO_SMALL
* plaintext_size is too small.
* \retval #PSA_ERROR_CORRUPTION_DETECTED \emptydescription
*/
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 for a multipart authenticated encryption operation.
*
* \note The signature of this function is that of a PSA driver
* aead_encrypt_setup entry point. This function behaves as an
* aead_encrypt_setup entry point as defined in the PSA driver interface
* specification for transparent drivers.
*
* If an error occurs at any step after a call to
* mbedtls_psa_aead_encrypt_setup(), the operation is reset by the PSA core by a
* call to mbedtls_psa_aead_abort(). The PSA core may call
* mbedtls_psa_aead_abort() at any time after the operation has been
* initialized, and is required to when the operation is no longer needed.
*
* \param[in,out] operation The operation object to set up. It must have
* been initialized as per the documentation for
* #mbedtls_psa_aead_operation_t and not yet in
* use.
* \param[in] attributes The attributes of the key to use for the
* operation.
* \param[in] key_buffer The buffer containing the key context.
* \param key_buffer_size Size of the \p key_buffer buffer in bytes.
It must be consistent with the size in bits
recorded in \p attributes.
* \param alg The AEAD algorithm to compute
* (\c PSA_ALG_XXX value such that
* #PSA_ALG_IS_AEAD(\p alg) is true).
*
* \retval #PSA_SUCCESS
* Success.
* \retval #PSA_ERROR_INVALID_ARGUMENT
* An invalid block length was supplied.
* \retval #PSA_ERROR_NOT_SUPPORTED
* \p alg is not supported.
* \retval #PSA_ERROR_INSUFFICIENT_MEMORY
* Failed to allocate memory for key material
*/
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 for a multipart authenticated decryption operation.
*
* \note The signature of this function is that of a PSA driver
* aead_decrypt_setup entry point. This function behaves as an
* aead_decrypt_setup entry point as defined in the PSA driver interface
* specification for transparent drivers.
*
* If an error occurs at any step after a call to
* mbedtls_psa_aead_decrypt_setup(), the PSA core resets the operation by a
* call to mbedtls_psa_aead_abort(). The PSA core may call
* mbedtls_psa_aead_abort() at any time after the operation has been
* initialized, and is required to when the operation is no longer needed.
*
* \param[in,out] operation The operation object to set up. It must have
* been initialized as per the documentation for
* #mbedtls_psa_aead_operation_t and not yet in
* use.
* \param[in] attributes The attributes of the key to use for the
* operation.
* \param[in] key_buffer The buffer containing the key context.
* \param key_buffer_size Size of the \p key_buffer buffer in bytes.
It must be consistent with the size in bits
recorded in \p attributes.
* \param alg The AEAD algorithm to compute
* (\c PSA_ALG_XXX value such that
* #PSA_ALG_IS_AEAD(\p alg) is true).
*
* \retval #PSA_SUCCESS
* Success.
* \retval #PSA_ERROR_INVALID_ARGUMENT
* An invalid block length was supplied.
* \retval #PSA_ERROR_NOT_SUPPORTED
* \p alg is not supported.
* \retval #PSA_ERROR_INSUFFICIENT_MEMORY
* Failed to allocate memory for key material
*/
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 the nonce for an authenticated encryption or decryption operation.
*
* \note The signature of this function is that of a PSA driver aead_set_nonce
* entry point. This function behaves as an aead_set_nonce entry point as
* defined in the PSA driver interface specification for transparent
* drivers.
*
* This function sets the nonce for the authenticated
* encryption or decryption operation.
*
* The PSA core calls mbedtls_psa_aead_encrypt_setup() or
* mbedtls_psa_aead_decrypt_setup() before calling this function.
*
* If this function returns an error status, the PSA core will call
* mbedtls_psa_aead_abort().
*
* \param[in,out] operation Active AEAD operation.
* \param[in] nonce Buffer containing the nonce to use.
* \param nonce_length Size of the nonce in bytes.
*
* \retval #PSA_SUCCESS
* Success.
* \retval #PSA_ERROR_INVALID_ARGUMENT
* The size of \p nonce is not acceptable for the chosen algorithm.
* \retval #PSA_ERROR_NOT_SUPPORTED
* Algorithm previously set is not supported in this configuration of
* the library.
*/
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.
*
* \note The signature of this function is that of a PSA driver aead_set_lengths
* entry point. This function behaves as an aead_set_lengths entry point
* as defined in the PSA driver interface specification for transparent
* drivers.
*
* The PSA core calls this function before calling mbedtls_psa_aead_update_ad()
* or mbedtls_psa_aead_update() if the algorithm for the operation requires it.
* If the algorithm does not require it, calling this function is optional, but
* if this function is called then the implementation must enforce the lengths.
*
* The PSA core may call this function before or after setting the nonce with
* mbedtls_psa_aead_set_nonce().
*
* - For #PSA_ALG_CCM, calling this function is required.
* - For the other AEAD algorithms defined in this specification, calling
* this function is not required.
*
* If this function returns an error status, the PSA core calls
* mbedtls_psa_aead_abort().
*
* \param[in,out] operation Active AEAD operation.
* \param ad_length Size of the non-encrypted additional
* authenticated data in bytes.
* \param plaintext_length Size of the plaintext to encrypt in bytes.
*
* \retval #PSA_SUCCESS
* Success.
* \retval #PSA_ERROR_INVALID_ARGUMENT
* At least one of the lengths is not acceptable for the chosen
* algorithm.
* \retval #PSA_ERROR_NOT_SUPPORTED
* Algorithm previously set is not supported in this configuration of
* the library.
*/
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 AEAD operation.
*
* \note The signature of this function is that of a PSA driver
* aead_update_ad entry point. This function behaves as an aead_update_ad
* entry point as defined in the PSA driver interface specification for
* transparent drivers.
*
* Additional data is authenticated, but not encrypted.
*
* The PSA core can call this function multiple times to pass successive
* fragments of the additional data. It will not call this function after
* passing data to encrypt or decrypt with mbedtls_psa_aead_update().
*
* Before calling this function, the PSA core will:
* 1. Call either mbedtls_psa_aead_encrypt_setup() or
* mbedtls_psa_aead_decrypt_setup().
* 2. Set the nonce with mbedtls_psa_aead_set_nonce().
*
* If this function returns an error status, the PSA core will call
* mbedtls_psa_aead_abort().
*
* \param[in,out] operation Active AEAD operation.
* \param[in] input Buffer containing the fragment of
* additional data.
* \param input_length Size of the \p input buffer in bytes.
*
* \retval #PSA_SUCCESS
* Success.
* \retval #PSA_ERROR_NOT_SUPPORTED
* Algorithm previously set is not supported in this configuration of
* the library.
*/
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 AEAD operation.
*
* \note The signature of this function is that of a PSA driver
* aead_update entry point. This function behaves as an aead_update entry
* point as defined in the PSA driver interface specification for
* transparent drivers.
*
* Before calling this function, the PSA core will:
* 1. Call either mbedtls_psa_aead_encrypt_setup() or
* mbedtls_psa_aead_decrypt_setup(). The choice of setup function
* determines whether this function encrypts or decrypts its input.
* 2. Set the nonce with mbedtls_psa_aead_set_nonce().
* 3. Call mbedtls_psa_aead_update_ad() to pass all the additional data.
*
* If this function returns an error status, the PSA core will call
* mbedtls_psa_aead_abort().
*
* This function does not require the input to be aligned to any
* particular block boundary. If the implementation can only process
* a whole block at a time, it must consume all the input provided, but
* it may delay the end of the corresponding output until a subsequent
* call to mbedtls_psa_aead_update(), mbedtls_psa_aead_finish() provides
* sufficient input. The amount of data that can be delayed in this way is
* bounded by #PSA_AEAD_UPDATE_OUTPUT_SIZE.
*
* \param[in,out] operation Active AEAD operation.
* \param[in] input Buffer containing the message fragment to
* encrypt or decrypt.
* \param input_length Size of the \p input buffer in bytes.
* \param[out] output Buffer where the output is to be written.
* \param output_size Size of the \p output buffer in bytes.
* This must be appropriate for the selected
* algorithm and key:
* - A sufficient output size is
* #PSA_AEAD_UPDATE_OUTPUT_SIZE(\c key_type,
* \c alg, \p input_length) where
* \c key_type is the type of key and \c alg is
* the algorithm that were used to set up the
* operation.
* - #PSA_AEAD_UPDATE_OUTPUT_MAX_SIZE(\p
* input_length) evaluates to the maximum
* output size of any supported AEAD
* algorithm.
* \param[out] output_length On success, the number of bytes
* that make up the returned output.
*
* \retval #PSA_SUCCESS
* Success.
*
* \retval #PSA_ERROR_BUFFER_TOO_SMALL
* The size of the \p output buffer is too small.
* #PSA_AEAD_UPDATE_OUTPUT_SIZE(\c key_type, \c alg, \p input_length) or
* #PSA_AEAD_UPDATE_OUTPUT_MAX_SIZE(\p input_length) can be used to
* determine the required buffer size.
*/
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 an AEAD operation.
*
* \note The signature of this function is that of a PSA driver
* aead_finish entry point. This function behaves as an aead_finish entry
* point as defined in the PSA driver interface specification for
* transparent drivers.
*
* The operation must have been set up by the PSA core with
* mbedtls_psa_aead_encrypt_setup().
*
* This function finishes the authentication of the additional data
* formed by concatenating the inputs passed to preceding calls to
* mbedtls_psa_aead_update_ad() with the plaintext formed by concatenating the
* inputs passed to preceding calls to mbedtls_psa_aead_update().
*
* This function has two output buffers:
* - \p ciphertext contains trailing ciphertext that was buffered from
* preceding calls to mbedtls_psa_aead_update().
* - \p tag contains the authentication tag.
*
* Whether or not this function returns successfully, the PSA core subsequently
* calls mbedtls_psa_aead_abort() to deactivate the operation.
*
* \param[in,out] operation Active AEAD operation.
* \param[out] ciphertext Buffer where the last part of the ciphertext
* is to be written.
* \param ciphertext_size Size of the \p ciphertext buffer in bytes.
* This must be appropriate for the selected
* algorithm and key:
* - A sufficient output size is
* #PSA_AEAD_FINISH_OUTPUT_SIZE(\c key_type,
* \c alg) where \c key_type is the type of key
* and \c alg is the algorithm that were used to
* set up the operation.
* - #PSA_AEAD_FINISH_OUTPUT_MAX_SIZE evaluates to
* the maximum output size of any supported AEAD
* algorithm.
* \param[out] ciphertext_length On success, the number of bytes of
* returned ciphertext.
* \param[out] tag Buffer where the authentication tag is
* to be written.
* \param tag_size Size of the \p tag buffer in bytes.
* This must be appropriate for the selected
* algorithm and key:
* - The exact tag size is #PSA_AEAD_TAG_LENGTH(\c
* key_type, \c key_bits, \c alg) where
* \c key_type and \c key_bits are the type and
* bit-size of the key, and \c alg are the
* algorithm that were used in the call to
* mbedtls_psa_aead_encrypt_setup().
* - #PSA_AEAD_TAG_MAX_SIZE evaluates to the
* maximum tag size of any supported AEAD
* algorithm.
* \param[out] tag_length On success, the number of bytes
* that make up the returned tag.
*
* \retval #PSA_SUCCESS
* Success.
* \retval #PSA_ERROR_BUFFER_TOO_SMALL
* The size of the \p tag buffer is too small.
* #PSA_AEAD_TAG_LENGTH(\c key_type, key_bits, \c alg) or
* #PSA_AEAD_TAG_MAX_SIZE can be used to determine the required \p tag
* buffer size.
*/
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.
*
* \note The signature of this function is that of a PSA driver
* aead_abort entry point. This function behaves as an aead_abort entry
* point as defined in the PSA driver interface specification for
* transparent drivers.
*
* Aborting an operation frees all associated resources except for the
* \p operation structure itself. Once aborted, the operation object
* can be reused for another operation by the PSA core by it calling
* mbedtls_psa_aead_encrypt_setup() or mbedtls_psa_aead_decrypt_setup() again.
*
* The PSA core may call this function any time after the operation object has
* been initialized as described in #mbedtls_psa_aead_operation_t.
*
* In particular, calling mbedtls_psa_aead_abort() after the operation has been
* terminated by a call to mbedtls_psa_aead_abort() or
* mbedtls_psa_aead_finish() is safe and has no effect.
*
* \param[in,out] operation Initialized AEAD operation.
*
* \retval #PSA_SUCCESS
* Success.
*/
psa_status_t mbedtls_psa_aead_abort(
mbedtls_psa_aead_operation_t *operation);
#endif /* PSA_CRYPTO_AEAD_H */