Move declaration of mbedtls_cipher_info_from_psa into psa_crypto_cipher.h
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
diff --git a/library/psa_crypto_cipher.h b/library/psa_crypto_cipher.h
index e5fe23b..fae9847 100644
--- a/library/psa_crypto_cipher.h
+++ b/library/psa_crypto_cipher.h
@@ -24,6 +24,22 @@
#include <mbedtls/cipher.h>
#include <psa/crypto.h>
+/** Get Mbed TLS cipher information given the cipher algorithm PSA identifier
+ * as well as the PSA type and size of the key to be used with the cipher
+ * algorithm.
+ *
+ * \param alg PSA cipher algorithm identifier
+ * \param key_type PSA key type
+ * \param key_bits Size of the key in bits
+ * \param[out] cipher_id Mbed TLS cipher algorithm identifier
+ *
+ * \return The Mbed TLS cipher information of the cipher algorithm.
+ * \c NULL if the PSA cipher algorithm is not supported.
+ */
+const mbedtls_cipher_info_t *mbedtls_cipher_info_from_psa(
+ psa_algorithm_t alg, psa_key_type_t key_type, size_t key_bits,
+ mbedtls_cipher_id_t *cipher_id );
+
/**
* \brief Set the key for a multipart symmetric encryption operation.
*