EVP_EncryptFinal
return EVP_EncryptFinal(ctx, out, outl);
__owur int EVP_EncryptFinal(EVP_CIPHER_CTX *ctx, unsigned char *out,
|| !EVP_EncryptFinal(ctx, encdata1 + len, &lenfinal)
if (!TEST_true(EVP_EncryptFinal(ctx, c_txt + clen_upd, &clen_fin))
|| !TEST_true(EVP_EncryptFinal(ctx, ciphertext + ctlen, &tmp))
|| !TEST_true(EVP_EncryptFinal(cipherctx, out, &ciphoutl)))