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# Lead Maintainer: Virgil Security Inc. <support@virgilsecurity.com>


from virgil_crypto_lib._libs import *
from ctypes import *
from ._vscf_impl import vscf_impl_t


class vscf_compound_private_key_t(Structure):
    pass


class VscfCompoundPrivateKey(object):
    """Handles compound private key.

    Compound private key contains 2 private keys and signature:
        - cipher key - is used for decryption;
        - signer key - is used for signing."""

    def __init__(self):
        """Create underlying C context."""
        self._ll = LowLevelLibs()
        self._lib = self._ll.foundation

    def vscf_compound_private_key_new(self):
        vscf_compound_private_key_new = self._lib.vscf_compound_private_key_new
        vscf_compound_private_key_new.argtypes = []
        vscf_compound_private_key_new.restype = POINTER(vscf_compound_private_key_t)
        return vscf_compound_private_key_new()

    def vscf_compound_private_key_delete(self, ctx):
        vscf_compound_private_key_delete = self._lib.vscf_compound_private_key_delete
        vscf_compound_private_key_delete.argtypes = [POINTER(vscf_compound_private_key_t)]
        vscf_compound_private_key_delete.restype = None
        return vscf_compound_private_key_delete(ctx)

    def vscf_compound_private_key_alg_id(self, ctx):
        """Algorithm identifier the key belongs to."""
        vscf_compound_private_key_alg_id = self._lib.vscf_compound_private_key_alg_id
        vscf_compound_private_key_alg_id.argtypes = [POINTER(vscf_compound_private_key_t)]
        vscf_compound_private_key_alg_id.restype = c_int
        return vscf_compound_private_key_alg_id(ctx)

    def vscf_compound_private_key_alg_info(self, ctx):
        """Return algorithm information that can be used for serialization."""
        vscf_compound_private_key_alg_info = self._lib.vscf_compound_private_key_alg_info
        vscf_compound_private_key_alg_info.argtypes = [POINTER(vscf_compound_private_key_t)]
        vscf_compound_private_key_alg_info.restype = POINTER(vscf_impl_t)
        return vscf_compound_private_key_alg_info(ctx)

    def vscf_compound_private_key_len(self, ctx):
        """Length of the key in bytes."""
        vscf_compound_private_key_len = self._lib.vscf_compound_private_key_len
        vscf_compound_private_key_len.argtypes = [POINTER(vscf_compound_private_key_t)]
        vscf_compound_private_key_len.restype = c_size_t
        return vscf_compound_private_key_len(ctx)

    def vscf_compound_private_key_bitlen(self, ctx):
        """Length of the key in bits."""
        vscf_compound_private_key_bitlen = self._lib.vscf_compound_private_key_bitlen
        vscf_compound_private_key_bitlen.argtypes = [POINTER(vscf_compound_private_key_t)]
        vscf_compound_private_key_bitlen.restype = c_size_t
        return vscf_compound_private_key_bitlen(ctx)

    def vscf_compound_private_key_is_valid(self, ctx):
        """Check that key is valid.
        Note, this operation can be slow."""
        vscf_compound_private_key_is_valid = self._lib.vscf_compound_private_key_is_valid
        vscf_compound_private_key_is_valid.argtypes = [POINTER(vscf_compound_private_key_t)]
        vscf_compound_private_key_is_valid.restype = c_bool
        return vscf_compound_private_key_is_valid(ctx)

    def vscf_compound_private_key_extract_public_key(self, ctx):
        """Extract public key from the private key."""
        vscf_compound_private_key_extract_public_key = self._lib.vscf_compound_private_key_extract_public_key
        vscf_compound_private_key_extract_public_key.argtypes = [POINTER(vscf_compound_private_key_t)]
        vscf_compound_private_key_extract_public_key.restype = POINTER(vscf_impl_t)
        return vscf_compound_private_key_extract_public_key(ctx)

    def vscf_compound_private_key_cipher_key(self, ctx):
        """Return primary private key suitable for a final decryption."""
        vscf_compound_private_key_cipher_key = self._lib.vscf_compound_private_key_cipher_key
        vscf_compound_private_key_cipher_key.argtypes = [POINTER(vscf_compound_private_key_t)]
        vscf_compound_private_key_cipher_key.restype = POINTER(vscf_impl_t)
        return vscf_compound_private_key_cipher_key(ctx)

    def vscf_compound_private_key_signer_key(self, ctx):
        """Return private key suitable for signing."""
        vscf_compound_private_key_signer_key = self._lib.vscf_compound_private_key_signer_key
        vscf_compound_private_key_signer_key.argtypes = [POINTER(vscf_compound_private_key_t)]
        vscf_compound_private_key_signer_key.restype = POINTER(vscf_impl_t)
        return vscf_compound_private_key_signer_key(ctx)

    def vscf_compound_private_key_shallow_copy(self, ctx):
        vscf_compound_private_key_shallow_copy = self._lib.vscf_compound_private_key_shallow_copy
        vscf_compound_private_key_shallow_copy.argtypes = [POINTER(vscf_compound_private_key_t)]
        vscf_compound_private_key_shallow_copy.restype = POINTER(vscf_compound_private_key_t)
        return vscf_compound_private_key_shallow_copy(ctx)

    def vscf_compound_private_key_impl(self, ctx):
        vscf_compound_private_key_impl = self._lib.vscf_compound_private_key_impl
        vscf_compound_private_key_impl.argtypes = [POINTER(vscf_compound_private_key_t)]
        vscf_compound_private_key_impl.restype = POINTER(vscf_impl_t)
        return vscf_compound_private_key_impl(ctx)
