Šifra daje pristup vratima.

Here šifra means something like code, passcode, or PIN.

It can be a broader word than English password. In some contexts, Croatian speakers might also use:

• lozinka = password
• PIN = PIN
• kod = code

So in this sentence, šifra is the thing that lets someone enter.

Also, šifra is a feminine noun.

Daje means gives.

It is the 3rd person singular present tense form of davati (to give, imperfective):

• ja dajem = I give / am giving
• ti daješ = you give
• on/ona/ono daje = he/she/it gives

Since šifra is singular, the verb is also singular:

• Šifra daje = The code gives

Croatian often uses the imperfective verb davati in general statements like this.

Because Croatian distinguishes between aspect:

• dati = perfective, more like to give once / to hand over / to complete the act
• davati = imperfective, more like to give / be giving / give in general

In a sentence stating a general function, like A code gives access, Croatian naturally prefers daje from davati.

Using da from dati would sound different and usually refer to a more completed, one-time act.

Pristup is in the accusative singular, because it is the direct object of daje.

The verb structure is:

• davati nešto = to give something

So:

• šifra = subject
• daje = verb
• pristup = direct object

Why does pristup look the same as the dictionary form? Because it is a masculine inanimate noun, and for many such nouns:

• nominative singular = accusative singular

So:

• pristup = nominative
• pristup = accusative

same form, different function.

Because pristup normally goes with the dative case:

• pristup nečemu = access to something

So the sentence literally works like:

• The code gives access to the door(s).

The noun vrata changes into the dative plural:

• nominative: vrata
• dative: vratima

That is why you get:

• pristup vratima

not pristup vrata.

Grammatically, vrata is plural.

This is one of those Croatian nouns that are usually used only in the plural, even when English uses a singular word like door.

So:

• vrata = door / doors, depending on context
• vratima = to the door / to the doors, depending on context

This can feel strange to English speakers, but it is normal Croatian usage.

Because Croatian has no articles.

English says:

• the code
• a code
• the door
• a door

Croatian simply says:

• šifra
• vrata

Whether it means a, the, or something more general depends on context.

So Šifra daje pristup vratima could be understood as:

• The code gives access to the door
• A code gives access to the doors
• The passcode gives access to the doors

depending on the situation.

Pristup means access.

It is a masculine noun. In sentences like this, it often appears in the pattern:

• dati/davati pristup nečemu = to give access to something
• imati pristup nečemu = to have access to something

Examples:

• Imam pristup internetu. = I have access to the internet.
• Kartica daje pristup zgradi. = The card gives access to the building.

So pristup vratima means access to the door(s).

Yes. That would also be natural.

• daje pristup = gives access
• omogućuje pristup = enables/allows access

Both are good. The second is a bit more formal or explicit.

So these are both fine:

• Šifra daje pristup vratima.
• Šifra omogućuje pristup vratima.

Yes, Croatian word order is more flexible than English, although the original version is a very natural neutral order:

• Šifra daje pristup vratima.

You might also see:

• Pristup vratima daje šifra.

That version puts more focus on pristup vratima or sounds more contrastive, like It is the code that gives access to the doors.

So the original sentence is the best basic version to learn first.

A rough guide for an English speaker:

• Š sounds like sh in ship
• šifra ≈ SHEE-fra
• daje ≈ DAH-yeh
• pristup ≈ PREE-stoop
• vratima ≈ VRAH-tee-ma

A few pronunciation notes:

• Croatian r is trilled or tapped
• Stress is not usually marked in normal writing
• Each vowel is pronounced clearly

So a rough full pronunciation is:

SHEE-fra DAH-yeh PREE-stoop VRAH-tee-ma