CRYPTO_gcm128_init
CRYPTO_gcm128_init(gcm_ctx, aes_key, (block128_f)AES_encrypt);
CRYPTO_gcm128_init(gcm_ctx, aes_key, (block128_f)vpaes_encrypt);
CRYPTO_gcm128_init(gcm_ctx, aes_key, (block128_f)AES_encrypt);
CRYPTO_gcm128_init(&gcm_ctx->gcm, &gcm_ctx->ks.ks,
CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
CRYPTO_gcm128_init(ret,key,block);
void CRYPTO_gcm128_init(GCM128_CONTEXT *ctx,void *key,block128_f block);