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A backdoor is a typically covert method of bypassing normal authentication or encryption in a computer, product, embedded device (e.g. a home router), or its embodiment (e.g. part of a cryptosystem, algorithm, chipset, or even a "homunculus computer"—a tiny computer-within-a-computer such as that found in Intel's AMT technology).
A hardware backdoor is a backdoor implemented within the physical components of a computer system, also known as its hardware. They can be created by introducing malicious code to a component's firmware , or even during the manufacturing process of a integrated circuit , known as a hardware trojan .
Backdoor compared with the dominant (front door) in the chromatic circle: they share two tones and are transpositionally equivalent. In jazz and jazz harmony, the chord progression from iv 7 to ♭ VII 7 to I (the tonic or "home" chord) has been nicknamed the backdoor progression [1] [2] or the backdoor ii-V, as described by jazz theorist and author Jerry Coker.
The Doors recorded "Back Door Man" for their 1967 self-titled debut album. Doors' guitarist Robby Krieger introduced the other members of the group to a blues rock adaptation of the song recorded by John Hammond Jr. for his 1964 album Big City Blues. [8] The Doors' version also incorporates elements of psychedelic blues [10] and hard rock. [9]
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In February 2024, a malicious backdoor was introduced to the Linux build of the xz utility within the liblzma library in versions 5.6.0 and 5.6.1 by an account using the name "Jia Tan". [b] [4] The backdoor gives an attacker who possesses a specific Ed448 private key remote code execution through OpenSSH on the affected Linux
The patent describes the working of an elliptic curve CSPRNG backdoor identical to the potential backdoor in Dual_EC_DRBG, and ways to neutralize such a hidden backdoor by choosing alternative curve points and more bit truncation in the output function. [6] Sometime in 2005 [19] ISO/IEC 18031:2005 is published, and includes Dual_EC_DRBG. [6]
Back Door, a 1972 by English jazz trio Back Door; The Back Door, a 1992 album by American band Cherish the Ladies; Songs: "Back Door", a 2020 song by South Korean boy group Stray Kids from the album In Life "Backdoor" (song), a 2020 song by American rapper Lil Durk "Back Door", a 2021 song by American rapper Pop Smoke from the album Faith