摘要:
A flexible aes instruction for a general purpose processor is provided that performs aes encryption or decryption using n rounds, where n includes the standard aes set of rounds {10, 12, 14}. A parameter is provided to allow the type of aes round to be selected, that is, whether it is a “last round”. In addition to standard aes, the flexible aes instruction allows an AES-like cipher with 20 rounds to be specified or a “one round” pass.
摘要:
A method for improving performance in exponentiation algorithms for encryption programs such as the Diffie-Hellman key-exchange protocol. The program determines if a standard exponentiation algorithm or an algorithm optimized for reduced memory are optimal for a given circumstance. The optimized algorithms may use zero-biased exponents to minimize the number of precomputed vectors needed and the number of multiplication operations required.
摘要:
A flexible aes instruction for a general purpose processor is provided that performs aes encryption or decryption using n rounds, where n includes the standard aes set of rounds {10, 12, 14}. A parameter is provided to allow the type of aes round to be selected, that is, whether it is a “last round”. In addition to standard aes, the flexible aes instruction allows an AES-like cipher with 20 rounds to be specified or a “one round” pass.
摘要:
In one aspect, circuitry to determine a modular remainder with respect to a polynomial of a message comprised of a series of segment. In another aspect, circuitry to access at least a portion of a first number having a first endian format, determine a second number based on a bit reflection and shift of a third number having an endian format opposite to that of the first endian format, and perform a polynomial multiplication of the first number and the at least a portion of the first number.
摘要:
A flexible aes instruction for a general purpose processor is provided that performs aes encryption or decryption using n rounds, where n includes the standard aes set of rounds {10, 12, 14}. A parameter is provided to allow the type of aes round to be selected, that is, whether it is a “last round”. In addition to standard aes, the flexible aes instruction allows an AES-like cipher with 20 rounds to be specified or a “one round” pass.
摘要:
A technique of determining a message residue includes accessing a message and simultaneously determining a set of modular remainders with respect to a polynomial for different respective segments of the message. The technique also includes determining a modular remainder with respect to the polynomial for the message based on the set of modular remainders and a set of constants determined prior to accessing the message. The modular remainder with respect to the polynomial for the message is stored in a memory.
摘要:
A flexible aes instruction for a general purpose processor is provided that performs aes encryption or decryption using n rounds, where n includes the standard aes set of rounds {10, 12, 14}. A parameter is provided to allow the type of aes round to be selected, that is, whether it is a “last round”. In addition to standard aes, the flexible aes instruction allows an AES-like cipher with 20 rounds to be specified or a “one round” pass.
摘要:
A method for improving performance in exponentiation algorithms for encryption programs such as the Diffie-Hellman key-exchange protocol. The program determines if a standard exponentiation algorithm or an algorithm optimized for reduced memory are optimal for a given circumstance. The optimized algorithms may use zero-biased exponents to minimize the number of precomputed vectors needed and the number of multiplication operations required.
摘要:
A method and a system to perform a Quick Verification of a Rabin Signature (QVRS) is provided. In one embodiment, the signing party generates a Rabin signature S of an original message M using a public key N in the Rabin signature generating formula M=S2 mod N. In one embodiment, the signing party also generates a value q according to the formula q=floor(S2/N). In one embodiment, the signing party sends the original message M, the signature S, the public key N and the value q to the verifying party. In one embodiment, the verifying party verifies the integrity of the message M using the signature S, the public key N and the value q and the test equation M=S2−qN.
摘要翻译:提供了一种执行拉宾签名快速验证(QVRS)的方法和系统。 在一个实施例中,签名方使用Rabin签名生成公式M = S< 2> mod N中的公共密钥N来生成原始消息M的拉宾签名S.在一个实施例中,签约方也 根据公式q = floor(S 2 / N)生成值q。 在一个实施例中,签名方向验证方发送原始消息M,签名S,公钥N和值q。 在一个实施例中,验证方使用签名S,公开密钥N和值q以及测试方程M = S 2 -Q N验证消息M的完整性。
摘要:
In one aspect, circuitry to determine a modular remainder with respect to a polynomial of a message comprised of a series of segment. In another aspect, circuitry to access at least a portion of a first number having a first endian format, determine a second number based on a bit reflection and shift of a third number having an endian format opposite to that of the first endian format, and perform a polynomial multiplication of the first number and the at least a portion of the first number.