Breakdown of Wäre der Code durch unsere Teamarbeit entschlüsselt worden?
sein
to be
unser
our
der
who, which, that (relative pronoun; die, das)
durch
through
Questions & Answers about Wäre der Code durch unsere Teamarbeit entschlüsselt worden?
Why does this sentence use wäre instead of hätte for "would have"?
In German, the passive voice is built using the verb werden. When forming the perfect or past conditional (Konjunktiv II) of werden, you must use sein as the helping verb, not haben. So, "would have been" translates to wäre ... worden, while hätte is reserved for active sentences like "he would have deciphered" (er hätte entschlüsselt).
Why does the sentence end with worden instead of geworden?
When werden is used as a helping verb to form the passive voice, its past participle drops the ge- prefix. Because it appears together with another past participle (entschlüsselt), it becomes simply worden. If werden were the main verb meaning "to become", you would use geworden.
Why do we use durch here instead of von to say how the code was deciphered?
In passive sentences, von (with the dative case) is used for the active doer of the action, usually a person or group (like von unserem Team). The preposition durch (with the accusative case) is used to express the means, method, or instrument used to achieve the result. Since Teamarbeit (teamwork) is an abstract method rather than a specific person, durch is the standard choice here.