151 lines
6.5 KiB
C
151 lines
6.5 KiB
C
#ifndef P256M_DRIVER_ENTRYPOINTS_H
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#define P256M_DRIVER_ENTRYPOINTS_H
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#if defined(MBEDTLS_P256M_EXAMPLE_DRIVER_ENABLED)
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#ifndef PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT
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#define PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT
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#endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
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#endif /* MBEDTLS_P256M_EXAMPLE_DRIVER_ENABLED */
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#include "psa/crypto_types.h"
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/** Convert an internal p256-m error code to a PSA error code
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*
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* \param ret An error code thrown by p256-m
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*
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* \return The corresponding PSA error code
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*/
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psa_status_t p256_to_psa_error( int ret );
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/** Generate SECP256R1 ECC Key Pair.
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* Interface function which calls the p256-m key generation function and
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* places it in the key buffer provided by the caller (mbed TLS) in the
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* correct format. For a SECP256R1 curve this is the 32 bit private key.
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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[out] key_buffer The buffer to contain the key data in
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* output format upon successful return.
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* \param[in] key_buffer_size Size of the \p key_buffer buffer in bytes.
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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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*
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* \retval #PSA_SUCCESS
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* Success. Keypair generated and stored in buffer.
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* \retval #PSA_ERROR_NOT_SUPPORTED
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* \retval #PSA_ERROR_GENERIC_ERROR
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* \retval #PSA_ERROR_INSUFFICIENT_MEMORY
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*/
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psa_status_t p256_transparent_generate_key(
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const psa_key_attributes_t *attributes,
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uint8_t *key_buffer,
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size_t key_buffer_size,
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size_t *key_buffer_length );
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/** Perform raw key agreement using p256-m's ECDH implementation
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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 private key
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* in the format specified by PSA.
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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 key agreement algorithm that is
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* compatible with the type of the key.
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* \param[in] peer_key The buffer containing the peer's public
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* key in format specified by PSA.
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* \param[in] peer_key_length Size of the \p peer_key buffer in
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* bytes.
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* \param[out] shared_secret The buffer to which the shared secret
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* is to be written.
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* \param[in] shared_secret_size Size of the \p shared_secret buffer in
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* bytes.
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* \param[out] shared_secret_length On success, the number of bytes that
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* make up the returned shared secret.
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* \retval #PSA_SUCCESS
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* Success. Shared secret successfully calculated.
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* \retval #PSA_ERROR_NOT_SUPPORTED
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*/
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psa_status_t p256_transparent_key_agreement(
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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 *peer_key,
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size_t peer_key_length,
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uint8_t *shared_secret,
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size_t shared_secret_size,
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size_t *shared_secret_length );
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/** Sign an already-calculated hash with a private key using p256-m's ECDSA
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* implementation
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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 private key
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* in the format specified by PSA.
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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
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* with the type of the key.
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* \param[in] hash The hash 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 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
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* Success. Hash was signed successfully.
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* respectively of the key.
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* \retval #PSA_ERROR_NOT_SUPPORTED
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*/
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psa_status_t p256_transparent_sign_hash(
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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 *hash,
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size_t hash_length,
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uint8_t *signature,
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size_t signature_size,
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size_t *signature_length );
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/** Verify the signature of a hash using a SECP256R1 public key using p256-m's
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* ECDSA implementation.
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*
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* \note p256-m expects a 64 byte public key, but the contents of the key
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buffer may be the 32 byte keypair representation or the 65 byte
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public key representation. As a result, this function calls
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psa_driver_wrapper_export_public_key() to ensure the public key
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can be passed to p256-m.
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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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*
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* \param[in] key_buffer The buffer containing the key
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* in the format specified by PSA.
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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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* the type of the key.
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* \param[in] hash The hash 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
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*/
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psa_status_t p256_transparent_verify_hash(
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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 *hash,
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size_t hash_length,
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const uint8_t *signature,
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size_t signature_length );
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#endif /* P256M_DRIVER_ENTRYPOINTS_H */
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