EVP_AES_HMAC_SHA1
#define data(ctx) ((EVP_AES_HMAC_SHA1 *)(ctx)->cipher_data)
EVP_AES_HMAC_SHA1 *key = data(ctx);
EVP_AES_HMAC_SHA1 *key = data(ctx);
EVP_AES_HMAC_SHA1 *key = data(ctx);
.ctx_size = sizeof(EVP_AES_HMAC_SHA1),
.ctx_size = sizeof(EVP_AES_HMAC_SHA1),