Add function prototypes for copying functions
Signed-off-by: David Horstmann <david.horstmann@arm.com>
diff --git a/library/psa_crypto_core.h b/library/psa_crypto_core.h
index 29b3b94..4c38a75 100644
--- a/library/psa_crypto_core.h
+++ b/library/psa_crypto_core.h
@@ -854,4 +854,34 @@
psa_status_t mbedtls_psa_verify_hash_abort(
mbedtls_psa_verify_hash_interruptible_operation_t *operation);
+/** Copy from an input buffer to a local copy.
+ *
+ * \param[in] input Pointer to input buffer.
+ * \param[in] input_len Length of the input buffer.
+ * \param[out] input_copy Pointer to a local copy in which to store the input data.
+ * \param[out] input_copy_len Length of the local copy buffer.
+ * \return #PSA_SUCCESS, if the buffer was successfully
+ * copied.
+ * \return #PSA_ERROR_BUFFER_TOO_SMALL, if the local copy
+ * is too small to hold contents of the
+ * input buffer.
+ */
+psa_status_t psa_crypto_copy_input(const uint8_t *input, size_t input_len,
+ uint8_t *input_copy, size_t input_copy_len);
+
+/** Copy from a local output buffer into a user-supplied one.
+ *
+ * \param[in] output_copy Pointer to a local buffer containing the output.
+ * \param[in] output_copy_len Length of the local buffer.
+ * \param[out] output Pointer to user-supplied output buffer.
+ * \param[out] output_len Length of the user-supplied output buffer.
+ * \return #PSA_SUCCESS, if the buffer was successfully
+ * copied.
+ * \return #PSA_ERROR_BUFFER_TOO_SMALL, if the
+ * user-supplied output buffer is too small to
+ * hold the contents of the local buffer.
+ */
+psa_status_t psa_crypto_copy_output(const uint8_t *output_copy, size_t output_copy_len,
+ uint8_t *output, size_t output_len);
+
#endif /* PSA_CRYPTO_CORE_H */