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318 lines
16 KiB
C
318 lines
16 KiB
C
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/*
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* PSA RSA layer on top of Mbed TLS 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_RSA_H
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#define PSA_CRYPTO_RSA_H
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#include <psa/crypto.h>
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#include <mbedtls/rsa.h>
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/** Load the contents of a key buffer into an internal RSA representation
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*
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* \param[in] type The type of key contained in \p data.
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* \param[in] data The buffer from which to load the representation.
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* \param[in] data_length The size in bytes of \p data.
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* \param[out] p_rsa Returns a pointer to an RSA context on success.
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* The caller is responsible for freeing both the
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* contents of the context and the context itself
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* when done.
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*/
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psa_status_t mbedtls_psa_rsa_load_representation(psa_key_type_t type,
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const uint8_t *data,
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size_t data_length,
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mbedtls_rsa_context **p_rsa);
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/** Import an RSA key in binary format.
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*
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* \note The signature of this function is that of a PSA driver
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* import_key entry point. This function behaves as an import_key
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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 for the key to import.
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* \param[in] data The buffer containing the key data in import
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* format.
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* \param[in] data_length Size of the \p data buffer in bytes.
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* \param[out] key_buffer The buffer containing the key data in output
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* format.
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* \param[in] key_buffer_size Size of the \p key_buffer buffer in bytes. This
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* size is greater or equal to \p data_length.
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* \param[out] key_buffer_length The length of the data written in \p
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* key_buffer in bytes.
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* \param[out] bits The key size in number of bits.
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*
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* \retval #PSA_SUCCESS The RSA key was imported successfully.
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* \retval #PSA_ERROR_INVALID_ARGUMENT
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* The key data is not correctly formatted.
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* \retval #PSA_ERROR_NOT_SUPPORTED \emptydescription
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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_rsa_import_key(
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const psa_key_attributes_t *attributes,
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const uint8_t *data, size_t data_length,
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uint8_t *key_buffer, size_t key_buffer_size,
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size_t *key_buffer_length, size_t *bits);
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/** Export an RSA key to export representation
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*
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* \param[in] type The type of key (public/private) to export
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* \param[in] rsa The internal RSA representation from which to export
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* \param[out] data The buffer to export to
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* \param[in] data_size The length of the buffer to export to
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* \param[out] data_length The amount of bytes written to \p data
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*/
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psa_status_t mbedtls_psa_rsa_export_key(psa_key_type_t type,
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mbedtls_rsa_context *rsa,
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uint8_t *data,
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size_t data_size,
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size_t *data_length);
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/** Export a public RSA key or the public part of an RSA key pair in binary
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* format.
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*
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* \note The signature of this function is that of a PSA driver
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* export_public_key entry point. This function behaves as an
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* export_public_key entry point as defined in the PSA driver interface
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* specification.
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*
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* \param[in] attributes The attributes for the key to export.
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* \param[in] key_buffer Material or context of the key to export.
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* \param[in] key_buffer_size Size of the \p key_buffer buffer in bytes.
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* \param[out] data Buffer where the key data is to be written.
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* \param[in] data_size Size of the \p data buffer in bytes.
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* \param[out] data_length On success, the number of bytes written in
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* \p data.
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*
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* \retval #PSA_SUCCESS The RSA public key was exported successfully.
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* \retval #PSA_ERROR_NOT_SUPPORTED \emptydescription
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* \retval #PSA_ERROR_COMMUNICATION_FAILURE \emptydescription
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* \retval #PSA_ERROR_HARDWARE_FAILURE \emptydescription
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* \retval #PSA_ERROR_CORRUPTION_DETECTED \emptydescription
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* \retval #PSA_ERROR_STORAGE_FAILURE \emptydescription
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* \retval #PSA_ERROR_INSUFFICIENT_MEMORY \emptydescription
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*/
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psa_status_t mbedtls_psa_rsa_export_public_key(
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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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uint8_t *data, size_t data_size, size_t *data_length);
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/**
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* \brief Generate an RSA key.
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*
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* \note The signature of the function is that of a PSA driver generate_key
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* entry point.
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*
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* \param[in] attributes The attributes for the RSA key to generate.
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* \param[out] key_buffer Buffer where the key data is to be written.
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* \param[in] key_buffer_size Size of \p key_buffer in bytes.
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* \param[out] key_buffer_length On success, the number of bytes written in
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* \p key_buffer.
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*
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* \retval #PSA_SUCCESS
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* The key was successfully generated.
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* \retval #PSA_ERROR_NOT_SUPPORTED
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* Key length or type not supported.
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* \retval #PSA_ERROR_BUFFER_TOO_SMALL
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* The size of \p key_buffer is too small.
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*/
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psa_status_t mbedtls_psa_rsa_generate_key(
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const psa_key_attributes_t *attributes,
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uint8_t *key_buffer, size_t key_buffer_size, size_t *key_buffer_length);
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/** Sign an already-calculated hash with an RSA private key.
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*
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* \note The signature of this function is that of a PSA driver
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* sign_hash entry point. This function behaves as a sign_hash
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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 RSA key to use for the
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* operation.
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* \param[in] key_buffer The buffer containing the RSA key context.
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* format.
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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 A signature algorithm that is compatible with
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* an RSA key.
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* \param[in] hash The hash or message to sign.
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* \param[in] hash_length Size of the \p hash buffer in bytes.
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* \param[out] signature Buffer where the signature is to be written.
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* \param[in] signature_size Size of the \p signature buffer in bytes.
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* \param[out] signature_length On success, the number of bytes
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* that make up the returned signature value.
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*
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* \retval #PSA_SUCCESS \emptydescription
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* \retval #PSA_ERROR_BUFFER_TOO_SMALL
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* The size of the \p signature buffer is too small. You can
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* determine a sufficient buffer size by calling
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* #PSA_SIGN_OUTPUT_SIZE(\c PSA_KEY_TYPE_RSA_KEY_PAIR, \c key_bits,
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* \p alg) where \c key_bits is the bit-size of the RSA key.
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* \retval #PSA_ERROR_NOT_SUPPORTED \emptydescription
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* \retval #PSA_ERROR_INVALID_ARGUMENT \emptydescription
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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_INSUFFICIENT_ENTROPY \emptydescription
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*/
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psa_status_t mbedtls_psa_rsa_sign_hash(
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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, const uint8_t *hash, size_t hash_length,
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uint8_t *signature, size_t signature_size, size_t *signature_length);
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/**
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* \brief Verify the signature a hash or short message using a public RSA key.
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*
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* \note The signature of this function is that of a PSA driver
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* verify_hash entry point. This function behaves as a verify_hash
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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 RSA key to use for the
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* operation.
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* \param[in] key_buffer The buffer containing the RSA key context.
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* format.
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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 A signature algorithm that is compatible with
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* an RSA key.
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* \param[in] hash The hash or message whose signature is to be
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* verified.
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* \param[in] hash_length Size of the \p hash buffer in bytes.
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* \param[in] signature Buffer containing the signature to verify.
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* \param[in] signature_length Size of the \p signature buffer in bytes.
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*
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* \retval #PSA_SUCCESS
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* The signature is valid.
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* \retval #PSA_ERROR_INVALID_SIGNATURE
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* The calculation was performed successfully, but the passed
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* signature is not a valid signature.
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* \retval #PSA_ERROR_NOT_SUPPORTED \emptydescription
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* \retval #PSA_ERROR_INVALID_ARGUMENT \emptydescription
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* \retval #PSA_ERROR_INSUFFICIENT_MEMORY \emptydescription
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*/
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psa_status_t mbedtls_psa_rsa_verify_hash(
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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, const uint8_t *hash, size_t hash_length,
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const uint8_t *signature, size_t signature_length);
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/**
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* \brief Encrypt a short message with a public key.
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*
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* \param attributes The attributes for the key to import.
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* \param key_buffer Buffer where the key data is to be written.
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* \param key_buffer_size Size of the \p key_buffer buffer in bytes.
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* \param input_length Size of the \p input buffer in bytes.
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* \param[in] salt A salt or label, if supported by the
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* encryption algorithm.
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* If the algorithm does not support a
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* salt, pass \c NULL.
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* If the algorithm supports an optional
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* salt and you do not want to pass a salt,
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* pass \c NULL.
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*
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* - For #PSA_ALG_RSA_PKCS1V15_CRYPT, no salt is
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* supported.
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* \param salt_length Size of the \p salt buffer in bytes.
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* If \p salt is \c NULL, pass 0.
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* \param[out] output Buffer where the encrypted message is to
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* be written.
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* \param 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 \emptydescription
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* \retval #PSA_ERROR_BUFFER_TOO_SMALL
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* The size of the \p output buffer is too small. You can
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* determine a sufficient buffer size by calling
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* #PSA_ASYMMETRIC_ENCRYPT_OUTPUT_SIZE(\c key_type, \c key_bits, \p alg)
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* where \c key_type and \c key_bits are the type and bit-size
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* respectively of \p key.
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* \retval #PSA_ERROR_NOT_SUPPORTED \emptydescription
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* \retval #PSA_ERROR_INVALID_ARGUMENT \emptydescription
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* \retval #PSA_ERROR_INSUFFICIENT_MEMORY \emptydescription
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* \retval #PSA_ERROR_COMMUNICATION_FAILURE \emptydescription
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* \retval #PSA_ERROR_HARDWARE_FAILURE \emptydescription
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* \retval #PSA_ERROR_CORRUPTION_DETECTED \emptydescription
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* \retval #PSA_ERROR_INSUFFICIENT_ENTROPY \emptydescription
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* \retval #PSA_ERROR_BAD_STATE
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* The library has not been previously initialized by psa_crypto_init().
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* It is implementation-dependent whether a failure to initialize
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* results in this error code.
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*/
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psa_status_t mbedtls_psa_asymmetric_encrypt(const psa_key_attributes_t *attributes,
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const uint8_t *key_buffer,
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size_t key_buffer_size,
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psa_algorithm_t alg,
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const uint8_t *input,
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size_t input_length,
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const uint8_t *salt,
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size_t salt_length,
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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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/**
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* \brief Decrypt a short message with a private key.
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*
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* \param attributes The attributes for the key to import.
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* \param key_buffer Buffer where the key data is to be written.
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* \param key_buffer_size Size of the \p key_buffer buffer in bytes.
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* \param[in] input The message to decrypt.
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* \param input_length Size of the \p input buffer in bytes.
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* \param[in] salt A salt or label, if supported by the
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* encryption algorithm.
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* If the algorithm does not support a
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* salt, pass \c NULL.
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* If the algorithm supports an optional
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* salt and you do not want to pass a salt,
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* pass \c NULL.
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*
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* - For #PSA_ALG_RSA_PKCS1V15_CRYPT, no salt is
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* supported.
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* \param salt_length Size of the \p salt buffer in bytes.
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* If \p salt is \c NULL, pass 0.
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* \param[out] output Buffer where the decrypted message is to
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* be written.
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* \param output_size Size of the \c 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 \emptydescription
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* \retval #PSA_ERROR_BUFFER_TOO_SMALL
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* The size of the \p output buffer is too small. You can
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* determine a sufficient buffer size by calling
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* #PSA_ASYMMETRIC_DECRYPT_OUTPUT_SIZE(\c key_type, \c key_bits, \p alg)
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* where \c key_type and \c key_bits are the type and bit-size
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* respectively of \p key.
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* \retval #PSA_ERROR_NOT_SUPPORTED \emptydescription
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* \retval #PSA_ERROR_INVALID_ARGUMENT \emptydescription
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* \retval #PSA_ERROR_INSUFFICIENT_MEMORY \emptydescription
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* \retval #PSA_ERROR_COMMUNICATION_FAILURE \emptydescription
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* \retval #PSA_ERROR_HARDWARE_FAILURE \emptydescription
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* \retval #PSA_ERROR_CORRUPTION_DETECTED \emptydescription
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* \retval #PSA_ERROR_INSUFFICIENT_ENTROPY \emptydescription
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* \retval #PSA_ERROR_INVALID_PADDING \emptydescription
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* \retval #PSA_ERROR_BAD_STATE
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* The library has not been previously initialized by psa_crypto_init().
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* It is implementation-dependent whether a failure to initialize
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* results in this error code.
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*/
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psa_status_t mbedtls_psa_asymmetric_decrypt(const psa_key_attributes_t *attributes,
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const uint8_t *key_buffer,
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size_t key_buffer_size,
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psa_algorithm_t alg,
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const uint8_t *input,
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size_t input_length,
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const uint8_t *salt,
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size_t salt_length,
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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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#endif /* PSA_CRYPTO_RSA_H */
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