Function getCryptoProvider

getCryptoProvider(): CryptoProvider
Gets the current global cryptographic provider.

If no provider has been explicitly set, this function returns a default WebCryptoProvider instance. The provider is cached globally for performance and consistency across the library.

Returns CryptoProvider
The current cryptographic provider
Example
```
import { getCryptoProvider } from 'pki-lite/core/crypto/crypto'

// Get the current provider
const provider = getCryptoProvider()

// Use it for cryptographic operations
const hash = await provider.digest(data, 'SHA-256')
const signature = await provider.sign(data, privateKey, algorithm)
```
- Defined in packages/pki-lite/src/core/crypto/provider.ts:55