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1.发明授权公开(公告)号：US07428306B2
公开(公告)日：2008-09-23
申请号：US11406184
申请日：2006-04-18
IPC分类号： H04L9/14
CPC分类号： G06F21/602 , G06F21/6218 , H04L9/0637
摘要： An encryption apparatus and method for providing an encrypted file system are provided. The encryption apparatus and method of the illustrative embodiments uses a combination of encryption methodologies so as to reduce the amount of decryption and re-encryption that is necessary to a file in the Encrypted File System in the event that the file needs to be modified. The encryption methodologies are interleaved, or alternated, with regard to each block of plaintext. In one illustrative embodiment, Plaintext Block Chaining (PBC) and Cipher Block Chaining (CBC) encryption methodologies are alternated for encrypting a sequence of blocks of data. The encryption of a block of plaintext is dependent upon the plaintext or a cipher generated for the plaintext of a previous block of data in the sequence of blocks of data so that the encryption is more secure than known Electronic Code Book encryption methodologies.
摘要翻译： 提供了一种用于提供加密文件系统的加密装置和方法。 说明性实施例的加密装置和方法使用加密方法的组合，以便在需要修改文件的情况下减少加密文件系统中的文件所必需的解密和重新加密的量。 关于每个明文块，加密方法被交织或交替。 在一个说明性实施例中，替代了明文块链接（PBC）和密码块链接（CBC）加密方法来加密数据块序列。 明文块的加密取决于明文或为数据块序列中的先前数据块的明文生成的密码，使得加密比已知的电子代码簿加密方法更安全。
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公开(公告)号：US20080310624A1
公开(公告)日：2008-12-18
申请号：US12194610
申请日：2008-08-20
IPC分类号： H04L9/06
CPC分类号： G06F21/602 , G06F21/6218 , H04L9/0637
摘要： An encryption apparatus and method for providing an encrypted file system are provided. The encryption apparatus and method of the illustrative embodiments uses a combination of encryption methodologies so as to reduce the amount of decryption and re-encryption that is necessary to a file in the Encrypted File System in the event that the file needs to be modified. The encryption methodologies are interleaved, or alternated, with regard to each block of plaintext. In one illustrative embodiment, Plaintext Block Chaining (PBC) and Cipher Block Chaining (CBC) encryption methodologies are alternated for encrypting a sequence of blocks of data. The encryption of a block of plaintext is dependent upon the plaintext or a cipher generated for the plaintext of a previous block of data in the sequence of blocks of data so that the encryption is more secure than known Electronic Code Book encryption methodologies.
摘要翻译： 提供了一种用于提供加密文件系统的加密装置和方法。 说明性实施例的加密装置和方法使用加密方法的组合，以便在需要修改文件的情况下减少加密文件系统中的文件所需的解密和重新加密的量。 关于每个明文块，加密方法被交织或交替。 在一个说明性实施例中，替代了明文块链接（PBC）和密码块链接（CBC）加密方法来加密数据块序列。 明文块的加密取决于明文或为数据块序列中的先前数据块的明文生成的密码，使得加密比已知的电子代码簿加密方法更安全。
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公开(公告)号：US08107621B2
公开(公告)日：2012-01-31
申请号：US12194610
申请日：2008-08-20
IPC分类号： H04L9/14
CPC分类号： G06F21/602 , G06F21/6218 , H04L9/0637
摘要： Mechanisms for providing an encrypted file system are provided. The mechanisms use a combination of encryption methodologies so as to reduce the amount of decryption and re-encryption that is necessary to a file in the Encrypted File System in the event that the file needs to be modified. The encryption methodologies are interleaved, or alternated, with regard to each block of plaintext. In one illustrative embodiment, Plaintext Block Chaining (PBC) and Cipher Block Chaining (CBC) encryption methodologies are alternated for encrypting a sequence of blocks of data. The encryption of a block of plaintext is dependent upon the plaintext or a cipher generated for the plaintext of a previous block of data in the sequence of blocks of data so that the encryption is more secure than known Electronic Code Book encryption methodologies.
摘要翻译： 提供了提供加密文件系统的机制。 这些机制使用加密方法的组合，以便在需要修改文件的情况下减少加密文件系统中的文件所需的解密和重新加密的数量。 关于每个明文块，加密方法被交织或交替。 在一个说明性实施例中，替代了明文块链接（PBC）和密码块链接（CBC）加密方法来加密数据块序列。 明文块的加密取决于明文或为数据块序列中的先前数据块的明文生成的密码，使得加密比已知的电子代码簿加密方法更安全。
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