keyview.py 文件源码

python
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项目:keyview 作者: ALSchwalm 项目源码 文件源码
def load_pem_file_item(buffer):
    backend = cryptography.hazmat.backends.default_backend()

    # PKCS#1/PKCS#8 private in PEM
    try:
        return cryptography.hazmat.primitives.serialization.load_pem_private_key(buffer, password=None, backend=backend)
    except:
        pass

    # PKCS#1/PKCS#8 public in PEM
    try:
        return cryptography.hazmat.primitives.serialization.load_pem_public_key(buffer, backend)
    except:
        pass

    # X509 certificate in PEM
    try:
        return load_pem_x509_certificate(buffer, backend)
    except:
        pass

    # PKCS7 certificate bundle in PEM
    try:
        return OpenSSL.crypto.load_pkcs7_data(OpenSSL.crypto.FILETYPE_PEM, buffer)
    except:
        pass

    raise Exception("Unknown file type for: {}".format(buffer))
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