159 lines
7.1 KiB
C
159 lines
7.1 KiB
C
/*
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* PSA PAKE layer on top of Mbed TLS software crypto
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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 OR GPL-2.0-or-later
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*/
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#ifndef PSA_CRYPTO_PAKE_H
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#define PSA_CRYPTO_PAKE_H
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#include <psa/crypto.h>
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/** Set the session information for a password-authenticated key exchange.
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*
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* \note The signature of this function is that of a PSA driver
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* pake_setup entry point. This function behaves as a pake_setup
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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,out] operation The operation object to set up. It must have
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* been initialized but not set up yet.
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* \param[in] inputs Inputs required for PAKE operation (role, password,
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* key lifetime, cipher suite)
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*
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* \retval #PSA_SUCCESS
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* Success.
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* \retval #PSA_ERROR_NOT_SUPPORTED
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* The algorithm in \p cipher_suite is not a supported PAKE algorithm,
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* or the PAKE primitive in \p cipher_suite is not supported or not
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* compatible with the PAKE algorithm, or the hash algorithm in
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* \p cipher_suite is not supported or not compatible with the PAKE
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* algorithm and primitive.
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* \retval #PSA_ERROR_INSUFFICIENT_MEMORY \emptydescription
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* \retval #PSA_ERROR_CORRUPTION_DETECTED \emptydescription
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*/
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psa_status_t mbedtls_psa_pake_setup(mbedtls_psa_pake_operation_t *operation,
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const psa_crypto_driver_pake_inputs_t *inputs);
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/** Get output for a step of a password-authenticated key exchange.
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*
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* \note The signature of this function is that of a PSA driver
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* pake_output entry point. This function behaves as a pake_output
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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,out] operation Active PAKE operation.
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* \param step The step of the algorithm for which the output is
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* requested.
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* \param[out] output Buffer where the output is to be written in the
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* format appropriate for this driver \p step. Refer to
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* the documentation of psa_crypto_driver_pake_step_t for
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* more information.
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* \param output_size Size of the \p output buffer in bytes. This must
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* be at least #PSA_PAKE_OUTPUT_SIZE(\p alg, \p
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* primitive, \p step) where \p alg and
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* \p primitive are the PAKE algorithm and primitive
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* in the operation's cipher suite, and \p step is
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* the output step.
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*
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* \param[out] output_length On success, the number of bytes of the returned
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* output.
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*
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* \retval #PSA_SUCCESS
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* 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_ENTROPY \emptydescription
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* \retval #PSA_ERROR_CORRUPTION_DETECTED \emptydescription
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* \retval #PSA_ERROR_DATA_CORRUPT \emptydescription
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* \retval #PSA_ERROR_DATA_INVALID \emptydescription
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*/
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psa_status_t mbedtls_psa_pake_output(mbedtls_psa_pake_operation_t *operation,
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psa_crypto_driver_pake_step_t step,
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uint8_t *output,
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size_t output_size,
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size_t *output_length);
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/** Provide input for a step of a password-authenticated key exchange.
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*
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* \note The signature of this function is that of a PSA driver
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* pake_input entry point. This function behaves as a pake_input
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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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* \note The core checks that input_length is smaller than PSA_PAKE_INPUT_MAX_SIZE.
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*
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* \param[in,out] operation Active PAKE operation.
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* \param step The driver step for which the input is provided.
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* \param[in] input Buffer containing the input in the format
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* appropriate for this \p step. Refer to the
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* documentation of psa_crypto_driver_pake_step_t
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* for more information.
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* \param input_length Size of the \p input buffer in bytes.
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*
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* \retval #PSA_SUCCESS
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* Success.
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* \retval #PSA_ERROR_INVALID_SIGNATURE
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* The verification fails for a zero-knowledge input step.
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* \retval #PSA_ERROR_INVALID_ARGUMENT
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* the \p input is not valid for the \p operation's algorithm, cipher suite
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* or \p step.
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* \retval #PSA_ERROR_NOT_SUPPORTED
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* the \p input is not supported for the \p operation's algorithm, cipher
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* suite or \p step.
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* \retval #PSA_ERROR_INSUFFICIENT_MEMORY \emptydescription
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* \retval #PSA_ERROR_CORRUPTION_DETECTED \emptydescription
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* \retval #PSA_ERROR_DATA_CORRUPT \emptydescription
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* \retval #PSA_ERROR_DATA_INVALID \emptydescription
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*/
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psa_status_t mbedtls_psa_pake_input(mbedtls_psa_pake_operation_t *operation,
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psa_crypto_driver_pake_step_t step,
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const uint8_t *input,
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size_t input_length);
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/** Get implicitly confirmed shared secret from a PAKE.
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*
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* \note The signature of this function is that of a PSA driver
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* pake_get_implicit_key entry point. This function behaves as a
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* pake_get_implicit_key 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 PAKE operation.
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* \param[out] output Output buffer for implicit key.
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* \param output_size Size of the output buffer in bytes.
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* \param[out] output_length On success, the number of bytes of the implicit key.
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*
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* \retval #PSA_SUCCESS
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* Success.
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* \retval #PSA_ERROR_NOT_SUPPORTED
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* Input from a PAKE is not supported by the algorithm in the \p output
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* key derivation operation.
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* \retval #PSA_ERROR_INSUFFICIENT_MEMORY \emptydescription
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* \retval #PSA_ERROR_CORRUPTION_DETECTED \emptydescription
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* \retval #PSA_ERROR_DATA_CORRUPT \emptydescription
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* \retval #PSA_ERROR_DATA_INVALID \emptydescription
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*/
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psa_status_t mbedtls_psa_pake_get_implicit_key(
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mbedtls_psa_pake_operation_t *operation,
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uint8_t *output, size_t output_size,
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size_t *output_length);
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/** Abort a PAKE 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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* pake_abort entry point. This function behaves as a pake_abort
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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,out] operation The operation to abort.
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*
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* \retval #PSA_SUCCESS
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* Success.
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* \retval #PSA_ERROR_CORRUPTION_DETECTED \emptydescription
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*/
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psa_status_t mbedtls_psa_pake_abort(mbedtls_psa_pake_operation_t *operation);
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#endif /* PSA_CRYPTO_PAKE_H */
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