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from pypdf._crypt_providers._base import CryptBase, CryptIdentity

try:
    from pypdf._crypt_providers._cryptography import (
        CryptAES,
        CryptRC4,
        aes_cbc_decrypt,
        aes_cbc_encrypt,
        aes_ecb_decrypt,
        aes_ecb_encrypt,
        crypt_provider,
        rc4_decrypt,
        rc4_encrypt,
    )
    from pypdf._utils import Version

    if Version(crypt_provider[1]) <= Version("3.0"):
        # This is due to the backend parameter being required back then:
        # https://cryptography.io/en/latest/changelog/#v3-1
        raise ImportError("cryptography<=3.0 is not supported")  # pragma: no cover
except ImportError:
    try:
        from pypdf._crypt_providers._pycryptodome import (  # type: ignore
            CryptAES,
            CryptRC4,
            aes_cbc_decrypt,
            aes_cbc_encrypt,
            aes_ecb_decrypt,
            aes_ecb_encrypt,
            crypt_provider,
            rc4_decrypt,
            rc4_encrypt,
        )
    except ImportError:
        from pypdf._crypt_providers._fallback import (  # type: ignore
            CryptAES,
            CryptRC4,
            aes_cbc_decrypt,
            aes_cbc_encrypt,
            aes_ecb_decrypt,
            aes_ecb_encrypt,
            crypt_provider,
            rc4_decrypt,
            rc4_encrypt,
        )

__all__ = [
    "crypt_provider",
    "CryptBase",
    "CryptIdentity",
    "CryptRC4",
    "CryptAES",
    "rc4_encrypt",
    "rc4_decrypt",
    "aes_ecb_encrypt",
    "aes_ecb_decrypt",
    "aes_cbc_encrypt",
    "aes_cbc_decrypt",
]