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1. 发明授权

EP4042383B1 POINT CLOUD SCRAMBLING 有权转让
公开(公告)号：EP4042383B1
公开(公告)日：2024-03-20
申请号：EP20888462.7
申请日：2020-11-10
发明人： DIEHL, Eric
IPC分类号： G06T19/20 , H04L9/20 , G06F21/62 , G06F21/10 , H04L9/08

2. 发明授权

EP3085008B1 PROVIDING FORWARD SECRECY IN A TERMINATING TLS CONNECTION PROXY 有权
公开(公告)号：EP3085008B1
公开(公告)日：2020-01-08
申请号：EP14871587.3
申请日：2014-12-18
申请人： AKAMAI TECHNOLOGIES, INC.
发明人： GERO, Charles E. , LISIECKI, Philip A.
IPC分类号： H04L9/20 , H04L9/30 , H04L9/06 , H04L9/08 , H04L9/32 , H04L29/06

3. 发明公开

EP2738975A4 ENCRYPTION DEVICE, ENCRYPTION METHOD AND ENCRYPTION PROGRAM 审中-公开
标题翻译：加密设备，加密方式和加密程序
公开(公告)号：EP2738975A4
公开(公告)日：2015-05-27
申请号：EP11869972
申请日：2011-07-25
申请人： MITSUBISHI ELECTRIC CORP
发明人： SHIBATA YOICHI
IPC分类号： H04L9/06 , G09C1/00 , G10L19/18 , H04L9/08 , H04L9/14 , H04L9/16 , H04L9/20
CPC分类号： H04L9/0819 , G10L19/22 , G10L19/24 , H04L9/0656 , H04L9/0852 , H04L9/0863 , H04L9/16
摘要： It is an object, when voice or image data or the like being encoded is encrypted using a one-time pad (OTP) cipher and then transmitted, to reduce a period of time in which a cipher key for the OTP cipher runs out. A terminal device A 102 determines whether to encode transmission data by an encoding scheme A or an encoding scheme B having a lower bit rate than the encoding scheme A, depending on the number of remaining bits of an OTP cipher key 401, and encodes the transmission data according to the determined encoding scheme, thereby generating encoded data. The terminal device A 102 encrypts the generated encoded data with the OTP cipher using the OTP cipher key, thereby generating encrypted communication data 405, and transmits the generated encrypted communication data 405 to a terminal device B 103.

4. 发明公开

EP1063811A1 Cryptographic apparatus and method 有权
标题翻译： KryptografischesGerätund Verfahren
公开(公告)号：EP1063811A1
公开(公告)日：2000-12-27
申请号：EP99304886.7
申请日：1999-06-22
申请人： HITACHI EUROPE LIMITED
发明人： Furuya, Soichi , Roe, Michael
IPC分类号： H04L9/06 , H04L9/20
CPC分类号： H04L9/0618 , H04L9/0662 , H04L2209/601
摘要： An encryption system comprises a pseudo-random number generator (KS) for generating a long pseudo-random sequence (S) from a shorter encryption key (K) and, if necessary, a nonce value (N), and a mixing function (MX) for combining the sequence with a plaintext message (P) on a block-by-block basis, where successive blocks (S(i)) of 128 bits of the sequence are combined with successive 64-bit blocks of plaintext (P(i)) to produce successive 64-bit blocks of ciphertext. The blockwise use of a long pseudo-random sequence preserves the advantages of a block cipher in terms of data confidentiality and data integrity, as well as benefiting from the speed advantages of a stream cipher.
摘要翻译：加密系统包括伪随机数发生器（KS），用于从较短的加密密钥（K）和必要时产生随机数值（N）和混合功能（MX）产生长的伪随机序列（S）），用于在逐块的基础上将序列与明文消息（P）组合，其中该序列的128位的连续块（S（i））与连续的64位块的明文（P（i ））以产生连续的64位密文块。长时间伪随机序列的阻塞使用在数据机密性和数据完整性方面保留了分组密码的优点，并且从流密码的速度优势中受益。

5. 发明公开

EP0907269A4 ENCRYPTION DEVICE FOR INFORMATION IN BINARY CODE 失效
标题翻译：加密设备二进制编码NEWS
公开(公告)号：EP0907269A4
公开(公告)日：2000-11-02
申请号：EP97954002
申请日：1997-12-24
申请人： MOLDOVYAN ALEXANDR ANDREEVICH , MOLDOVYAN NIKOLAY ANDREEVICH
发明人： MOLDOVYAN ALEXANDR ANDREEVICH , MOLDOVYAN NIKOLAI ANDREEVICH , MOLDOVYANU PETR ANDREEVICH
IPC分类号： H04L9/20 , G09C1/00 , H04K1/02 , H04L9/06
CPC分类号： H04L9/0618 , H04L2209/08
摘要： The present invention relates to telecommunications and information technology, and especially to cryptographic means and systems intended for encoding encrypted data. The inventive system involves working out a secret key, working out K >/= 1 data block containing P >/= 1 elements of the binary information code, and converting data blocks. The novelty of the system consists in that D >/= binary vectors are also generated, that the data blocks are also formed by combining binary vectors, that the binary vectors are generated at random and pseudo-random, that they are linked to the corresponding elements of the binary information code, and that this linkage is based on the secret key.

6. 发明公开

EP0172877A4 ELECTRONIC TRANSACTION SECURITY SYSTEM AND METHOD. 失效
标题翻译：电子SICHERHEITSSYSTEM-和方法进行交易。
公开(公告)号：EP0172877A4
公开(公告)日：1988-04-27
申请号：EP85901177
申请日：1985-02-05
申请人： WHITE PETER
发明人： WHITE PETER
IPC分类号： G07D9/00 , G06Q20/04 , G06Q20/10 , G06Q20/14 , G06Q20/34 , G06Q20/38 , G06Q20/40 , G07F7/10 , H04L9/20 , H04L9/32 , G06F15/20
CPC分类号： G07F7/1008 , G06Q20/04 , G06Q20/105 , G06Q20/14 , G06Q20/341 , G06Q20/3415 , G06Q20/382 , G06Q20/385 , G06Q20/40 , G06Q20/4093 , G07F7/1016
摘要： A security system for use in an electronic funds transfer environment. The system includes a central processor (20) and a portable transaction device (30). During initiation, the central processor (20) generates a sequence of transaction numbers and associated random numbers. This data is supplied to and stored in the portable transaction device (30). In operation, the next available random number is determined and combined with a transaction parameter to generate a security code. The security code may be verified immediately or during the check clearing cycle at the central processor. In the preferred embodiment, in the on-line operation, the selection of the random number is altered by a random offset number further enhancing security.

7. 发明公开

EP3085008A1 PROVIDING FORWARD SECRECY IN A TERMINATING TLS CONNECTION PROXY 有权
标题翻译：提供正向安全在最后的TLS代理连接
公开(公告)号：EP3085008A1
公开(公告)日：2016-10-26
申请号：EP14871587.3
申请日：2014-12-18
申请人： AKAMAI TECHNOLOGIES, INC.
发明人： GERO, Charles E. , LISIECKI, Philip A.
IPC分类号： H04L9/20 , H04L9/30
摘要： An infrastructure delivery platform provides a RSA proxy service as an enhancement to the TLS/SSL protocol to off-load, from an edge server to an external cryptographic server, the decryption of an encrypted pre-master secret. The technique provides forward secrecy in the event that the edge server is compromised, preferably through the use of a cryptographically strong hash function that is implemented separately at both the edge server and the cryptographic server. To provide the forward secrecy for this particular leg, the edge server selects an ephemeral value, and applies a cryptographic hash the value to compute a server random value, which is then transmitted back to the requesting client. That server random value is later re-generated at the cryptographic server to enable the cryptographic server to compute a master secret. The forward secrecy is enabled by ensuring that the ephemeral value does not travel on the wire.

8. 发明公开

EP1875657A1 METHOD AND APPARATUS FOR CHECKING PROXIMITY BETWEEN DEVICES USING HASH CHAIN 审中-公开
标题翻译：方法和设备，用于检查之间的设备的距离使用哈希链
公开(公告)号：EP1875657A1
公开(公告)日：2008-01-09
申请号：EP06757545.6
申请日：2006-04-26
申请人： Samsung Electronics Co., Ltd.
发明人： LEE, Jae-Heung , KIM, Myung-Sun , HAN, Sung-Hyu , YOON, Young-Sun , LEE, Sun-Nam , KIM, Bong-Seon
IPC分类号： H04L9/20
CPC分类号： H04L63/0428 , H04L9/3236 , H04L9/3271 , H04L63/123 , H04L2209/38 , H04W12/02 , H04W12/06
摘要： A method of measuring round trip time (RTT) includes: chain-hashing at least one random number to create a plurality of hash values; (b) transmitting one of the created hash values to a device and starting to measure RTT of the device; and (c) receiving from the device a response to the transmitted hash value and ending the RTT measurement, thereby performing a more effective proximity check than a conventional proximity check requiring encryptions and decryptions of several tens of times through several thousands of times.

9. 发明授权

EP0907269B1 ENCRYPTION DEVICE FOR INFORMATION IN BINARY CODE 失效
标题翻译：加密设备二进制编码NEWS
公开(公告)号：EP0907269B1
公开(公告)日：2004-05-26
申请号：EP97954002.8
申请日：1997-12-24
申请人： Moldovyan, Alexandr Andreevich , Moldovyan, Nikolay Andreevich
发明人： MOLDOVYAN, Alexandr Andreevich , MOLDOVYAN, Nikolai Andreevich , MOLDOVYANU, Petr Andreevich
IPC分类号： H04L9/20 , H04K1/02 , H04L9/06
CPC分类号： H04L9/0618 , H04L2209/08
摘要： The present invention relates to telecommunications and information technology, and especially to cryptographic means and systems intended for encoding encrypted data. The inventive system involves working out a secret key, working out K >/= 1 data block containing P >/= 1 elements of the binary information code, and converting data blocks. The novelty of the system consists in that D >/= binary vectors are also generated, that the data blocks are also formed by combining binary vectors, that the binary vectors are generated at random and pseudo-random, that they are linked to the corresponding elements of the binary information code, and that this linkage is based on the secret key.

10. 发明公开

EP1125189A4 METHODS OF DIGITAL STEGANOGRAPHY FOR MULTIMEDIA DATA 审中-公开
标题翻译：数字多媒体数据的隐秘方法
公开(公告)号：EP1125189A4
公开(公告)日：2001-11-28
申请号：EP99952884
申请日：1999-10-26
申请人： DATAMARK TECHNOLOGIES PTE LTD
发明人： HO ANTHONY TUNG SHUEN , TAM SIU CHUNG , TAN SIONG CHAI , YAP LIAN TECK
IPC分类号： G06T1/00 , G06F7/58 , G09C1/00 , G09C5/00 , H04L9/22 , H04N1/387 , H04N7/26 , H04L9/20
CPC分类号： G06F7/582 , H04L9/0662 , H04L2209/20 , H04L2209/608
摘要： A lossless steganographic encoding method for secure transmission or storage of multimedia data. Primary data, such as text, image, video, audio or other digital data, is utilised in a steganographic process to encode secondary data, such as text, image, video, audio or other digital data. The primary data includes a plurality of first data elements and the secondary data includes a plurality of second data elements. For each second data element an operation is performed with a first data element so as to generate a key element as a result of the operation. The key elements may then be securely transmitted and/or stored. In preferred embodiments of the method, the primary data may be rearranged according to a predefined or random manner, or it may be resized so as to match the size of the secondary data. A complementary decoding method is disclosed, and a method of generating a pseudo-random number sequence, which may be used in the steganographic and decoding methods, is also disclosed.

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