COMBINING INSTRUCTIONS INCLUDING AN INSTRUCTION THAT PERFORMS A SEQUENCE OF TRANSFORMATIONS TO ISOLATE ONE TRANSFORMATION
    1.
    发明申请
    COMBINING INSTRUCTIONS INCLUDING AN INSTRUCTION THAT PERFORMS A SEQUENCE OF TRANSFORMATIONS TO ISOLATE ONE TRANSFORMATION 有权
    组合指令,包括执行转换序列以隔离一次转换的指令

    公开(公告)号:US20090220071A1

    公开(公告)日:2009-09-03

    申请号:US12040214

    申请日:2008-02-29

    IPC分类号: H04L9/28

    摘要: The Advanced Encryption Standard (AES) is a symmetric block cipher that can encrypt and decrypt information. Encryption (cipher) performs a series of transformations (Shift Rows, Substitute Bytes, Mix Columns) using the secret key (cipher key) to transforms intelligible data referred to as “plaintext” into an unintelligible form referred to as “cipher text”. The transformations (Inverse Shift Rows, Inverse Substitute Bytes, Inverse Mix Columns) in the inverse cipher (decryption) are the inverse of the transformations in the cipher. Encryption and decryption is performed efficiently through the use of instructions that perform the series of transformations. Combinations of these instructions allow the isolation of the transformations (Shift Rows, Substitute Bytes, Mix Columns, Inverse Shift Rows, Inverse Substitute Bytes, Inverse Mix Columns) to be obtained.

    摘要翻译: 高级加密标准(AES)是可以加密和解密信息的对称块密码。 加密(密码)使用秘密密钥(密码密钥)执行一系列转换(Shift Rows,Substitute Bytes,Mix Columns),将被称为“明文”的可理解数据转换成称为“密文”的无法理解的形式。 反密码(解密)中的变换(逆位排,逆替换字节,反混合列)是密码中的变换的逆。 通过使用执行一系列转换的指令来有效地执行加密和解密。 这些指令的组合允许要获得的转换的隔离(Shift Rows,Substitution Bytes,Mix Columns,Inverse Shift Rows,Inverse Substitute Bytes,Inverse Mix Columns)。

    Combining instructions including an instruction that performs a sequence of transformations to isolate one transformation
    5.
    发明授权
    Combining instructions including an instruction that performs a sequence of transformations to isolate one transformation 有权
    组合指令,包括执行转换序列以隔离一个转换的指令

    公开(公告)号:US08879725B2

    公开(公告)日:2014-11-04

    申请号:US12040214

    申请日:2008-02-29

    摘要: The Advanced Encryption Standard (AES) is a symmetric block cipher that can encrypt and decrypt information. Encryption (cipher) performs a series of transformations (Shift Rows, Substitute Bytes, Mix Columns) using the secret key (cipher key) to transforms intelligible data referred to as “plaintext” into an unintelligible form referred to as “cipher text”. The transformations (Inverse Shift Rows, Inverse Substitute Bytes, Inverse Mix Columns) in the inverse cipher (decryption) are the inverse of the transformations in the cipher. Encryption and decryption is performed efficiently through the use of instructions that perform the series of transformations. Combinations of these instructions allow the isolation of the transformations (Shift Rows, Substitute Bytes, Mix Columns, Inverse Shift Rows, Inverse Substitute Bytes, Inverse Mix Columns) to be obtained.

    摘要翻译: 高级加密标准(AES)是可以加密和解密信息的对称块密码。 加密(密码)使用秘密密钥(密码密钥)执行一系列转换(Shift Rows,Substitute Bytes,Mix Columns),将被称为“明文”的可理解数据转换成称为“密文”的无法理解的形式。 反密码(解密)中的变换(逆位排,逆替换字节,反混合列)是密码中的变换的逆。 通过使用执行一系列转换的指令来有效地执行加密和解密。 这些指令的组合允许要获得的转换的隔离(Shift Rows,Substitution Bytes,Mix Columns,Inverse Shift Rows,Inverse Substitute Bytes,Inverse Mix Columns)。

    Fused multiply add operations using bit masks
    10.
    发明授权
    Fused multiply add operations using bit masks 有权
    融合乘法使用位掩码添加操作

    公开(公告)号:US09542154B2

    公开(公告)日:2017-01-10

    申请号:US13926175

    申请日:2013-06-25

    IPC分类号: G06F7/483 G06F7/544 G06F7/76

    摘要: Systems and methods of performing a fused multiply add (FMA) operations are provided. In one embodiment, the length of the adder used by the FMA operation is less than 3*N, where N is the number of bits in the mantissa term of a floating point number. A mask may be used to perform the addition portion of the FMA operation using the adder. A second mask may be used to denormalize the result of the addition portion of the FMA operation if an underflow occurs.

    摘要翻译: 提供了执行融合乘法(FMA)操作的系统和方法。 在一个实施例中,由FMA操作使用的加法器的长度小于3 * N,其中N是浮点数的尾数项中的位数。 可以使用掩码来使用加法器来执行FMA操作的相加部分。 如果发生下溢,则可以使用第二掩模来对FMA操作的添加部分的结果进行非规范化。