static int dasync_cipher_init_key_helper(EVP_CIPHER_CTX *ctx,
const unsigned char *key,
const unsigned char *iv, int enc,
const EVP_CIPHER *cipher)
{
int ret;
struct dasync_pipeline_ctx *pipe_ctx =
(struct dasync_pipeline_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
if (pipe_ctx->inner_cipher_data == NULL
&& EVP_CIPHER_impl_ctx_size(cipher) != 0) {
pipe_ctx->inner_cipher_data = OPENSSL_zalloc(
EVP_CIPHER_impl_ctx_size(cipher));
if (pipe_ctx->inner_cipher_data == NULL) {
DASYNCerr(DASYNC_F_DASYNC_CIPHER_INIT_KEY_HELPER,
ERR_R_MALLOC_FAILURE);
return 0;
}
}
pipe_ctx->numpipes = 0;
pipe_ctx->aadctr = 0;
EVP_CIPHER_CTX_set_cipher_data(ctx, pipe_ctx->inner_cipher_data);
ret = EVP_CIPHER_meth_get_init(cipher)(ctx, key, iv, enc);
EVP_CIPHER_CTX_set_cipher_data(ctx, pipe_ctx);
return ret;
}
static int dasync_cipher_cleanup_helper(EVP_CIPHER_CTX *ctx,
const EVP_CIPHER *cipher)
{
struct dasync_pipeline_ctx *pipe_ctx =
(struct dasync_pipeline_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
OPENSSL_clear_free(pipe_ctx->inner_cipher_data,
EVP_CIPHER_impl_ctx_size(cipher));
return 1;
}
static const EVP_CIPHER *ossltest_aes_128_cbc(void)
{
if (_hidden_aes_128_cbc == NULL
&& ((_hidden_aes_128_cbc = EVP_CIPHER_meth_new(NID_aes_128_cbc,
16 /* block size */,
16 /* key len */)) == NULL
|| !EVP_CIPHER_meth_set_iv_length(_hidden_aes_128_cbc,16)
|| !EVP_CIPHER_meth_set_flags(_hidden_aes_128_cbc,
EVP_CIPH_FLAG_DEFAULT_ASN1
| EVP_CIPH_CBC_MODE)
|| !EVP_CIPHER_meth_set_init(_hidden_aes_128_cbc,
ossltest_aes128_init_key)
|| !EVP_CIPHER_meth_set_do_cipher(_hidden_aes_128_cbc,
ossltest_aes128_cbc_cipher)
|| !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_aes_128_cbc,
EVP_CIPHER_impl_ctx_size(EVP_aes_128_cbc())))) {
EVP_CIPHER_meth_free(_hidden_aes_128_cbc);
_hidden_aes_128_cbc = NULL;
}
return _hidden_aes_128_cbc;
}
