int
mac_init(struct sshmac *mac)
{
if (mac->key == NULL)
return SSH_ERR_INVALID_ARGUMENT;
switch (mac->type) {
case SSH_EVP:
if (mac->evp_md == NULL)
return SSH_ERR_INVALID_ARGUMENT;
HMAC_CTX_init(&mac->evp_ctx);
if (HMAC_Init(&mac->evp_ctx, mac->key, mac->key_len,
mac->evp_md) != 1) {
HMAC_CTX_cleanup(&mac->evp_ctx);
return SSH_ERR_LIBCRYPTO_ERROR;
}
return 0;
case SSH_UMAC:
if ((mac->umac_ctx = umac_new(mac->key)) == NULL)
return SSH_ERR_ALLOC_FAIL;
return 0;
case SSH_UMAC128:
mac->umac_ctx = umac128_new(mac->key);
return 0;
default:
return SSH_ERR_INVALID_ARGUMENT;
}
}
int
mac_init(Mac *mac)
{
if (mac->key == NULL)
fatal("%s: no key", __func__);
switch (mac->type) {
case SSH_DIGEST:
if (mac->hmac_ctx == NULL ||
ssh_hmac_init(mac->hmac_ctx, mac->key, mac->key_len) < 0)
return -1;
return 0;
case SSH_UMAC:
mac->umac_ctx = umac_new(mac->key);
return 0;
case SSH_UMAC128:
mac->umac_ctx = umac128_new(mac->key);
return 0;
default:
return -1;
}
}
int
mac_init(Mac *mac)
{
if (mac->key == NULL)
fatal("mac_init: no key");
switch (mac->type) {
case SSH_EVP:
if (mac->evp_md == NULL)
return -1;
HMAC_CTX_init(&mac->evp_ctx);
HMAC_Init(&mac->evp_ctx, mac->key, mac->key_len, mac->evp_md);
return 0;
case SSH_UMAC:
mac->umac_ctx = umac_new(mac->key);
return 0;
case SSH_UMAC128:
mac->umac_ctx = umac128_new(mac->key);
return 0;
default:
return -1;
}
}
