Is a marriage considered invalid if the wife concealed from the husband that the loss of her virginity was due to fornication and not rape, and what is the ruling of Islamic law regarding this marriage, divorce, and the wife's rights after she has renounced them?

If the marriage was conducted with the guardian's permission and in the presence of witnesses, then it is valid. The wife is entitled to the full dowry and maintenance during her 'iddah (waiting period). It was incumbent upon the wife to conceal her past and not inform her husband of the adultery, and the husband should not inquire into his wife's past. If the husband did not stipulate virginity, then it is not obligatory to inform him of its loss, and circumlocution can be used in speech. If the wife redeems herself by waiving the deferred dowry and the jewelry, and seeks khul' (divorce initiated by the wife), there is no harm in that, and khul' is an irrevocable divorce. If the husband was the one who compelled his wife to seek khul' due to his injustice and harm towards her, then it is not permissible for him to take compensation.