diff options
Diffstat (limited to 'include/drivers/auth/crypto_mod.h')
| -rw-r--r-- | include/drivers/auth/crypto_mod.h | 34 |
1 files changed, 30 insertions, 4 deletions
diff --git a/include/drivers/auth/crypto_mod.h b/include/drivers/auth/crypto_mod.h index f211035d7..71cf67306 100644 --- a/include/drivers/auth/crypto_mod.h +++ b/include/drivers/auth/crypto_mod.h @@ -13,9 +13,18 @@ enum crypto_ret_value { CRYPTO_ERR_INIT, CRYPTO_ERR_HASH, CRYPTO_ERR_SIGNATURE, + CRYPTO_ERR_DECRYPTION, CRYPTO_ERR_UNKNOWN }; +#define CRYPTO_MAX_IV_SIZE 16U +#define CRYPTO_MAX_TAG_SIZE 16U + +/* Decryption algorithm */ +enum crypto_dec_algo { + CRYPTO_GCM_DECRYPT = 0 +}; + /* * Cryptographic library descriptor */ @@ -44,6 +53,15 @@ typedef struct crypto_lib_desc_s { unsigned int data_len, unsigned char *output); #endif /* MEASURED_BOOT */ + /* + * Authenticated decryption. Return one of the + * 'enum crypto_ret_value' options. + */ + int (*auth_decrypt)(enum crypto_dec_algo dec_algo, void *data_ptr, + size_t len, const void *key, unsigned int key_len, + unsigned int key_flags, const void *iv, + unsigned int iv_len, const void *tag, + unsigned int tag_len); } crypto_lib_desc_t; /* Public functions */ @@ -54,6 +72,11 @@ int crypto_mod_verify_signature(void *data_ptr, unsigned int data_len, void *pk_ptr, unsigned int pk_len); int crypto_mod_verify_hash(void *data_ptr, unsigned int data_len, void *digest_info_ptr, unsigned int digest_info_len); +int crypto_mod_auth_decrypt(enum crypto_dec_algo dec_algo, void *data_ptr, + size_t len, const void *key, unsigned int key_len, + unsigned int key_flags, const void *iv, + unsigned int iv_len, const void *tag, + unsigned int tag_len); #if MEASURED_BOOT int crypto_mod_calc_hash(unsigned int alg, void *data_ptr, @@ -61,21 +84,24 @@ int crypto_mod_calc_hash(unsigned int alg, void *data_ptr, /* Macro to register a cryptographic library */ #define REGISTER_CRYPTO_LIB(_name, _init, _verify_signature, _verify_hash, \ - _calc_hash) \ + _calc_hash, _auth_decrypt) \ const crypto_lib_desc_t crypto_lib_desc = { \ .name = _name, \ .init = _init, \ .verify_signature = _verify_signature, \ .verify_hash = _verify_hash, \ - .calc_hash = _calc_hash \ + .calc_hash = _calc_hash, \ + .auth_decrypt = _auth_decrypt \ } #else -#define REGISTER_CRYPTO_LIB(_name, _init, _verify_signature, _verify_hash) \ +#define REGISTER_CRYPTO_LIB(_name, _init, _verify_signature, _verify_hash, \ + _auth_decrypt) \ const crypto_lib_desc_t crypto_lib_desc = { \ .name = _name, \ .init = _init, \ .verify_signature = _verify_signature, \ - .verify_hash = _verify_hash \ + .verify_hash = _verify_hash, \ + .auth_decrypt = _auth_decrypt \ } #endif /* MEASURED_BOOT */ |