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152 lines
7.5 KiB
C
152 lines
7.5 KiB
C
/*
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* PSA AEAD driver entry points
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*/
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/*
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* Copyright The Mbed TLS Contributors
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef PSA_CRYPTO_AEAD_H
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#define PSA_CRYPTO_AEAD_H
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#include <psa/crypto.h>
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/**
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* \brief Process an authenticated encryption operation.
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*
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* \note The signature of this function is that of a PSA driver
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* aead_encrypt entry point. This function behaves as an aead_encrypt
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* entry point as defined in the PSA driver interface specification for
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* transparent drivers.
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*
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* \param[in] attributes The attributes of the key to use for the
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* operation.
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* \param[in] key_buffer The buffer containing the key context.
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* \param key_buffer_size Size of the \p key_buffer buffer in bytes.
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* \param alg The AEAD algorithm to compute.
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* \param[in] nonce Nonce or IV to use.
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* \param nonce_length Size of the nonce buffer in bytes. This must
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* be appropriate for the selected algorithm.
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* The default nonce size is
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* PSA_AEAD_NONCE_LENGTH(key_type, alg) where
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* key_type is the type of key.
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* \param[in] additional_data Additional data that will be authenticated
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* but not encrypted.
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* \param additional_data_length Size of additional_data in bytes.
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* \param[in] plaintext Data that will be authenticated and encrypted.
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* \param plaintext_length Size of plaintext in bytes.
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* \param[out] ciphertext Output buffer for the authenticated and
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* encrypted data. The additional data is not
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* part of this output. For algorithms where the
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* encrypted data and the authentication tag are
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* defined as separate outputs, the
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* authentication tag is appended to the
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* encrypted data.
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* \param ciphertext_size Size of the ciphertext buffer in bytes. This
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* must be appropriate for the selected algorithm
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* and key:
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* - A sufficient output size is
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* PSA_AEAD_ENCRYPT_OUTPUT_SIZE(key_type, alg,
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* plaintext_length) where key_type is the type
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* of key.
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* - PSA_AEAD_ENCRYPT_OUTPUT_MAX_SIZE(
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* plaintext_length) evaluates to the maximum
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* ciphertext size of any supported AEAD
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* encryption.
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* \param[out] ciphertext_length On success, the size of the output in the
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* ciphertext buffer.
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*
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* \retval #PSA_SUCCESS Success.
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* \retval #PSA_ERROR_NOT_SUPPORTED
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* \p alg is not supported.
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* \retval #PSA_ERROR_INSUFFICIENT_MEMORY
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* \retval #PSA_ERROR_BUFFER_TOO_SMALL
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* ciphertext_size is too small.
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* \retval #PSA_ERROR_CORRUPTION_DETECTED
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*/
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psa_status_t mbedtls_psa_aead_encrypt(
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const psa_key_attributes_t *attributes,
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const uint8_t *key_buffer, size_t key_buffer_size,
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psa_algorithm_t alg,
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const uint8_t *nonce, size_t nonce_length,
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const uint8_t *additional_data, size_t additional_data_length,
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const uint8_t *plaintext, size_t plaintext_length,
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uint8_t *ciphertext, size_t ciphertext_size, size_t *ciphertext_length );
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/**
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* \brief Process an authenticated decryption operation.
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*
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* \note The signature of this function is that of a PSA driver
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* aead_decrypt entry point. This function behaves as an aead_decrypt
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* entry point as defined in the PSA driver interface specification for
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* transparent drivers.
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*
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* \param[in] attributes The attributes of the key to use for the
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* operation.
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* \param[in] key_buffer The buffer containing the key context.
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* \param key_buffer_size Size of the \p key_buffer buffer in bytes.
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* \param alg The AEAD algorithm to compute.
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* \param[in] nonce Nonce or IV to use.
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* \param nonce_length Size of the nonce buffer in bytes. This must
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* be appropriate for the selected algorithm.
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* The default nonce size is
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* PSA_AEAD_NONCE_LENGTH(key_type, alg) where
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* key_type is the type of key.
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* \param[in] additional_data Additional data that has been authenticated
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* but not encrypted.
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* \param additional_data_length Size of additional_data in bytes.
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* \param[in] ciphertext Data that has been authenticated and
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* encrypted. For algorithms where the encrypted
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* data and the authentication tag are defined
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* as separate inputs, the buffer contains
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* encrypted data followed by the authentication
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* tag.
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* \param ciphertext_length Size of ciphertext in bytes.
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* \param[out] plaintext Output buffer for the decrypted data.
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* \param plaintext_size Size of the plaintext buffer in bytes. This
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* must be appropriate for the selected algorithm
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* and key:
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* - A sufficient output size is
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* PSA_AEAD_DECRYPT_OUTPUT_SIZE(key_type, alg,
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* ciphertext_length) where key_type is the
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* type of key.
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* - PSA_AEAD_DECRYPT_OUTPUT_MAX_SIZE(
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* ciphertext_length) evaluates to the maximum
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* plaintext size of any supported AEAD
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* decryption.
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* \param[out] plaintext_length On success, the size of the output in the
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* plaintext buffer.
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*
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* \retval #PSA_SUCCESS Success.
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* \retval #PSA_ERROR_INVALID_SIGNATURE
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* The cipher is not authentic.
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* \retval #PSA_ERROR_NOT_SUPPORTED
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* \p alg is not supported.
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* \retval #PSA_ERROR_INSUFFICIENT_MEMORY
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* \retval #PSA_ERROR_BUFFER_TOO_SMALL
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* plaintext_size is too small.
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* \retval #PSA_ERROR_CORRUPTION_DETECTED
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*/
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psa_status_t mbedtls_psa_aead_decrypt(
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const psa_key_attributes_t *attributes,
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const uint8_t *key_buffer, size_t key_buffer_size,
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psa_algorithm_t alg,
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const uint8_t *nonce, size_t nonce_length,
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const uint8_t *additional_data, size_t additional_data_length,
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const uint8_t *ciphertext, size_t ciphertext_length,
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uint8_t *plaintext, size_t plaintext_size, size_t *plaintext_length );
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#endif /* PSA_CRYPTO_AEAD */
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