209 lines
8.9 KiB
C
209 lines
8.9 KiB
C
/*
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* PSA cipher 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_CIPHER_H
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#define PSA_CRYPTO_CIPHER_H
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#include <psa/crypto.h>
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/**
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* \brief Set the key for a multipart symmetric 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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* cipher_encrypt_setup entry point. This function behaves as a
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* cipher_encrypt_setup entry point as defined in the PSA driver
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* interface specification for transparent drivers.
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*
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* \param[in,out] operation The operation object to set up. It has been
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* initialized as per the documentation for
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* #psa_cipher_operation_t and not yet in use.
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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[in] key_buffer_size Size of the \p key_buffer buffer in bytes.
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* \param[in] alg The cipher algorithm to compute
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* (\c PSA_ALG_XXX value such that
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* #PSA_ALG_IS_CIPHER(\p alg) is true).
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*
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* \retval #PSA_SUCCESS
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* \retval #PSA_ERROR_NOT_SUPPORTED
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* \retval #PSA_ERROR_INSUFFICIENT_MEMORY
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* \retval #PSA_ERROR_CORRUPTION_DETECTED
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*/
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psa_status_t mbedtls_psa_cipher_encrypt_setup(
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psa_cipher_operation_t *operation,
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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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/**
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* \brief Set the key for a multipart symmetric 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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* cipher_decrypt_setup entry point. This function behaves as a
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* cipher_decrypt_setup entry point as defined in the PSA driver
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* interface specification for transparent drivers.
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*
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* \param[in,out] operation The operation object to set up. It has been
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* initialized as per the documentation for
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* #psa_cipher_operation_t and not yet in use.
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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[in] key_buffer_size Size of the \p key_buffer buffer in bytes.
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* \param[in] alg The cipher algorithm to compute
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* (\c PSA_ALG_XXX value such that
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* #PSA_ALG_IS_CIPHER(\p alg) is true).
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*
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* \retval #PSA_SUCCESS
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* \retval #PSA_ERROR_NOT_SUPPORTED
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* \retval #PSA_ERROR_INSUFFICIENT_MEMORY
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* \retval #PSA_ERROR_CORRUPTION_DETECTED
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*/
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psa_status_t mbedtls_psa_cipher_decrypt_setup(
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psa_cipher_operation_t *operation,
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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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/** Generate an IV for a symmetric encryption operation.
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*
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* This function generates a random IV (initialization vector), nonce
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* or initial counter value for the encryption operation as appropriate
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* for the chosen algorithm, key type and key size.
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*
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* \note The signature of this function is that of a PSA driver
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* cipher_generate_iv entry point. This function behaves as a
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* cipher_generate_iv entry point as defined in the PSA driver
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* interface specification for transparent drivers.
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*
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* \param[in,out] operation Active cipher operation.
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* \param[out] iv Buffer where the generated IV is to be written.
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* \param[in] iv_size Size of the \p iv buffer in bytes.
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* \param[out] iv_length On success, the number of bytes of the
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* generated IV.
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*
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* \retval #PSA_SUCCESS
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* \retval #PSA_ERROR_BUFFER_TOO_SMALL
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* The size of the \p iv buffer is too small.
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* \retval #PSA_ERROR_INSUFFICIENT_MEMORY
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*/
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psa_status_t mbedtls_psa_cipher_generate_iv(
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psa_cipher_operation_t *operation,
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uint8_t *iv, size_t iv_size, size_t *iv_length );
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/** Set the IV for a symmetric encryption or decryption operation.
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*
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* This function sets the IV (initialization vector), nonce
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* or initial counter value for the encryption or 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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* cipher_set_iv entry point. This function behaves as a
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* cipher_set_iv entry point as defined in the PSA driver
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* interface specification for transparent drivers.
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*
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* \param[in,out] operation Active cipher operation.
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* \param[in] iv Buffer containing the IV to use.
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* \param[in] iv_length Size of the IV in bytes.
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*
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* \retval #PSA_SUCCESS
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* \retval #PSA_ERROR_INVALID_ARGUMENT
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* The size of \p iv is not acceptable for the chosen algorithm,
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* or the chosen algorithm does not use an IV.
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* \retval #PSA_ERROR_INSUFFICIENT_MEMORY
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*/
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psa_status_t mbedtls_psa_cipher_set_iv(
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psa_cipher_operation_t *operation,
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const uint8_t *iv, size_t iv_length );
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/** Encrypt or decrypt a message fragment in an active cipher 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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* cipher_update entry point. This function behaves as a
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* cipher_update entry point as defined in the PSA driver
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* interface specification for transparent drivers.
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*
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* \param[in,out] operation Active cipher operation.
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* \param[in] input Buffer containing the message fragment to
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* encrypt or decrypt.
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* \param[in] input_length Size of the \p input buffer in bytes.
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* \param[out] output Buffer where the output is to be written.
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* \param[in] output_size Size of the \p output buffer in bytes.
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* \param[out] output_length On success, the number of bytes
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* that make up the returned output.
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*
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* \retval #PSA_SUCCESS
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* \retval #PSA_ERROR_BUFFER_TOO_SMALL
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* The size of the \p output buffer is too small.
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* \retval #PSA_ERROR_INSUFFICIENT_MEMORY
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*/
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psa_status_t mbedtls_psa_cipher_update(
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psa_cipher_operation_t *operation,
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const uint8_t *input, size_t input_length,
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uint8_t *output, size_t output_size, size_t *output_length );
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/** Finish encrypting or decrypting a message in a cipher 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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* cipher_finish entry point. This function behaves as a
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* cipher_finish entry point as defined in the PSA driver
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* interface specification for transparent drivers.
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*
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* \param[in,out] operation Active cipher operation.
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* \param[out] output Buffer where the output is to be written.
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* \param[in] output_size Size of the \p output buffer in bytes.
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* \param[out] output_length On success, the number of bytes
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* that make up the returned output.
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*
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* \retval #PSA_SUCCESS
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* \retval #PSA_ERROR_INVALID_ARGUMENT
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* The total input size passed to this operation is not valid for
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* this particular algorithm. For example, the algorithm is a based
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* on block cipher and requires a whole number of blocks, but the
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* total input size is not a multiple of the block size.
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* \retval #PSA_ERROR_INVALID_PADDING
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* This is a decryption operation for an algorithm that includes
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* padding, and the ciphertext does not contain valid padding.
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* \retval #PSA_ERROR_BUFFER_TOO_SMALL
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* The size of the \p output buffer is too small.
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* \retval #PSA_ERROR_INSUFFICIENT_MEMORY
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*/
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psa_status_t mbedtls_psa_cipher_finish(
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psa_cipher_operation_t *operation,
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uint8_t *output, size_t output_size, size_t *output_length );
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/** Abort a cipher operation.
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*
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* Aborting an operation frees all associated resources except for the
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* \p operation structure itself. Once aborted, the operation object
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* can be reused for another 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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* cipher_abort entry point. This function behaves as a
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* cipher_abort entry point as defined in the PSA driver
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* interface specification for transparent drivers.
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*
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* \param[in,out] operation Initialized cipher operation.
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*
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* \retval #PSA_SUCCESS
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*/
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psa_status_t mbedtls_psa_cipher_abort( psa_cipher_operation_t *operation );
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#endif /* PSA_CRYPTO_CIPHER_H */
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