Python crypto_sign_ed25519_sk_to_curve25519 예제들

예제 #1

파일: crypto_sign.py 프로젝트: superdarkbit/pynacl

def crypto_sign_ed25519_sk_to_curve25519(secret_key_bytes):
    """
    Converts a secret Ed25519 key (encoded as bytes ``secret_key_bytes``) to
    a secret Curve25519 key as bytes.

    Raises a ValueError if ``secret_key_bytes``is not of length
    ``crypto_sign_SECRETKEYBYTES``

    :param secret_key_bytes: bytes
    :rtype: bytes
    """
    if len(secret_key_bytes) != crypto_sign_SECRETKEYBYTES:
        raise exc.ValueError("Invalid curve public key")

    curve_secret_key_len = crypto_sign_curve25519_BYTES
    curve_secret_key = ffi.new("unsigned char[]", curve_secret_key_len)

    rc = lib.crypto_sign_ed25519_sk_to_curve25519(curve_secret_key,
                                                  secret_key_bytes)
    ensure(rc == 0, 'Unexpected library error', raising=exc.RuntimeError)

    return ffi.buffer(curve_secret_key, curve_secret_key_len)[:]

예제 #2

파일: crypto_sign.py 프로젝트: NegativeMjark/pynacl

def crypto_sign_ed25519_sk_to_curve25519(secret_key_bytes):
    """
    Converts a secret Ed25519 key (encoded as bytes ``secret_key_bytes``) to
    a secret Curve25519 key as bytes.

    Raises a ValueError if ``secret_key_bytes``is not of length
    ``crypto_sign_SECRETKEYBYTES``

    :param public_key_bytes: bytes
    :rtype: bytes
    """
    if len(secret_key_bytes) != crypto_sign_SECRETKEYBYTES:
        raise ValueError("Invalid curve public key")

    curve_secret_key_len = crypto_sign_curve25519_BYTES
    curve_secret_key = ffi.new("unsigned char[]", curve_secret_key_len)

    rc = lib.crypto_sign_ed25519_sk_to_curve25519(curve_secret_key,
                                                  secret_key_bytes)
    assert rc == 0

    return ffi.buffer(curve_secret_key, curve_secret_key_len)[:]

예제 #3

def crypto_sign_ed25519_sk_to_curve25519(secret_key_bytes):
    """
    Converts a secret Ed25519 key (encoded as bytes ``secret_key_bytes``) to
    a secret Curve25519 key as bytes.

    Raises a ValueError if ``secret_key_bytes``is not of length
    ``crypto_sign_SECRETKEYBYTES``

    :param public_key_bytes: bytes
    :rtype: bytes
    """
    if len(secret_key_bytes) != crypto_sign_SECRETKEYBYTES:
        raise ValueError("Invalid curve public key")

    curve_secret_key_len = crypto_sign_curve25519_BYTES
    curve_secret_key = ffi.new("unsigned char[]", curve_secret_key_len)

    rc = lib.crypto_sign_ed25519_sk_to_curve25519(curve_secret_key,
                                                  secret_key_bytes)
    assert rc == 0

    return ffi.buffer(curve_secret_key, curve_secret_key_len)[:]

예제 #4

파일: crypto_sign.py 프로젝트: lmctv/pynacl

def crypto_sign_ed25519_sk_to_curve25519(secret_key_bytes):
    """
    Converts a secret Ed25519 key (encoded as bytes ``secret_key_bytes``) to
    a secret Curve25519 key as bytes.

    Raises a ValueError if ``secret_key_bytes``is not of length
    ``crypto_sign_SECRETKEYBYTES``

    :param secret_key_bytes: bytes
    :rtype: bytes
    """
    if len(secret_key_bytes) != crypto_sign_SECRETKEYBYTES:
        raise exc.ValueError("Invalid curve secret key")

    curve_secret_key_len = crypto_sign_curve25519_BYTES
    curve_secret_key = ffi.new("unsigned char[]", curve_secret_key_len)

    rc = lib.crypto_sign_ed25519_sk_to_curve25519(curve_secret_key,
                                                  secret_key_bytes)
    ensure(rc == 0,
           'Unexpected library error',
           raising=exc.RuntimeError)

    return ffi.buffer(curve_secret_key, curve_secret_key_len)[:]