dca_3des
error = dca_3des(ctx, plaintext, ciphertext, req, DR_ENCRYPT);
error = dca_3des(ctx, plaintext, ciphertext, req,
error = dca_3des(ctx, ciphertext, plaintext, req, DR_DECRYPT);
error = dca_3des(ctx, ciphertext, plaintext, req,
rv = dca_3des(&ctx, input, output, req, mode);
int dca_3des(crypto_ctx_t *, crypto_data_t *, crypto_data_t *,