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Diffstat (limited to 'src/methods/generic_gmac/generic_gmac.c')
-rw-r--r--src/methods/generic_gmac/generic_gmac.c47
1 files changed, 23 insertions, 24 deletions
diff --git a/src/methods/generic_gmac/generic_gmac.c b/src/methods/generic_gmac/generic_gmac.c
index 91b96cb..f7ea086 100644
--- a/src/methods/generic_gmac/generic_gmac.c
+++ b/src/methods/generic_gmac/generic_gmac.c
@@ -29,16 +29,15 @@
#include "../common.h"
-struct fastd_method_context {
+struct fastd_method {
const fastd_cipher_info_t *cipher_info;
const fastd_mac_info_t *ghash_info;
};
-
struct fastd_method_session_state {
fastd_method_common_t common;
- const fastd_method_context_t *ctx;
+ const fastd_method_t *method;
const fastd_cipher_t *cipher;
fastd_cipher_state_t *cipher_state;
@@ -48,11 +47,11 @@ struct fastd_method_session_state {
};
-static bool method_create_by_name(const char *name, fastd_method_context_t **method_ctx) {
- fastd_method_context_t ctx;
+static bool method_create_by_name(const char *name, fastd_method_t **method) {
+ fastd_method_t m;
- ctx.ghash_info = fastd_mac_info_get_by_name("ghash");
- if (!ctx.ghash_info)
+ m.ghash_info = fastd_mac_info_get_by_name("ghash");
+ if (!m.ghash_info)
return false;
size_t len = strlen(name);
@@ -69,38 +68,38 @@ static bool method_create_by_name(const char *name, fastd_method_context_t **met
memcpy(cipher_name, name, len-5);
cipher_name[len-5] = 0;
- ctx.cipher_info = fastd_cipher_info_get_by_name(cipher_name);
- if (!ctx.cipher_info)
+ m.cipher_info = fastd_cipher_info_get_by_name(cipher_name);
+ if (!m.cipher_info)
return false;
- if (ctx.cipher_info->iv_length <= COMMON_NONCEBYTES)
+ if (m.cipher_info->iv_length <= COMMON_NONCEBYTES)
return false;
- *method_ctx = malloc(sizeof(fastd_method_context_t));
- **method_ctx = ctx;
+ *method = malloc(sizeof(fastd_method_t));
+ **method = m;
return true;
}
-static void method_destroy(fastd_method_context_t *method_ctx) {
- free(method_ctx);
+static void method_destroy(fastd_method_t *method) {
+ free(method);
}
-static size_t method_key_length(fastd_context_t *ctx UNUSED, const fastd_method_context_t *method_ctx) {
- return method_ctx->cipher_info->key_length + method_ctx->ghash_info->key_length;
+static size_t method_key_length(fastd_context_t *ctx UNUSED, const fastd_method_t *method) {
+ return method->cipher_info->key_length + method->ghash_info->key_length;
}
-static fastd_method_session_state_t* method_session_init(fastd_context_t *ctx, const fastd_method_context_t *method_ctx, const uint8_t *secret, bool initiator) {
+static fastd_method_session_state_t* method_session_init(fastd_context_t *ctx, const fastd_method_t *method, const uint8_t *secret, bool initiator) {
fastd_method_session_state_t *session = malloc(sizeof(fastd_method_session_state_t));
fastd_method_common_init(ctx, &session->common, initiator);
- session->ctx = method_ctx;
+ session->method = method;
- session->cipher = fastd_cipher_get(ctx, session->ctx->cipher_info);
+ session->cipher = fastd_cipher_get(ctx, method->cipher_info);
session->cipher_state = session->cipher->init(ctx, secret);
- session->ghash = fastd_mac_get(ctx, session->ctx->ghash_info);
- session->ghash_state = session->ghash->init(ctx, secret + session->ctx->cipher_info->key_length);
+ session->ghash = fastd_mac_get(ctx, method->ghash_info);
+ session->ghash_state = session->ghash->init(ctx, secret + method->cipher_info->key_length);
return session;
}
@@ -149,7 +148,7 @@ static bool method_encrypt(fastd_context_t *ctx, fastd_peer_t *peer UNUSED, fast
if (tail_len)
memset(in.data+in.len, 0, tail_len);
- size_t iv_length = session->ctx->cipher_info->iv_length;
+ size_t iv_length = session->method->cipher_info->iv_length;
uint8_t nonce[iv_length];
memset(nonce, 0, iv_length);
memcpy(nonce, session->common.send_nonce, COMMON_NONCEBYTES);
@@ -204,7 +203,7 @@ static bool method_decrypt(fastd_context_t *ctx, fastd_peer_t *peer, fastd_metho
return false;
- size_t iv_length = session->ctx->cipher_info->iv_length;
+ size_t iv_length = session->method->cipher_info->iv_length;
uint8_t nonce[iv_length];
memset(nonce, 0, iv_length);
memcpy(nonce, in.data, COMMON_NONCEBYTES);
@@ -253,7 +252,7 @@ static bool method_decrypt(fastd_context_t *ctx, fastd_peer_t *peer, fastd_metho
return true;
}
-const fastd_method_t fastd_method_generic_gmac = {
+const fastd_method_provider_t fastd_method_generic_gmac = {
.max_overhead = COMMON_HEADBYTES + sizeof(fastd_block128_t),
.min_encrypt_head_space = sizeof(fastd_block128_t),
.min_decrypt_head_space = 0,