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763ce13b0b
If not needed, disabling scp allows for a nice size reduction. Dropbear executable size comparison: 153621 bytes (baseline) 133077 bytes (without scp) In other words, we trim a total of 20544 bytes. Signed-off-by: Rui Salvaterra <rsalvaterra@gmail.com>
103 lines
2.3 KiB
Plaintext
103 lines
2.3 KiB
Plaintext
menu "Configuration"
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depends on PACKAGE_dropbear
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config DROPBEAR_CURVE25519
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bool "Curve25519 support"
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default y
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help
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This enables the following key exchange algorithm:
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curve25519-sha256@libssh.org
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Increases binary size by about 4 kB (MIPS).
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config DROPBEAR_ECC
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bool "Elliptic curve cryptography (ECC)"
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default n
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help
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Enables basic support for elliptic curve cryptography (ECC)
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in key exchange and public key authentication.
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Key exchange algorithms:
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ecdh-sha2-nistp256
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Public key algorithms:
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ecdsa-sha2-nistp256
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Increases binary size by about 24 kB (MIPS).
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If full ECC support is required, also select DROPBEAR_ECC_FULL.
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config DROPBEAR_ECC_FULL
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bool "Elliptic curve cryptography (ECC), full support"
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default n
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depends on DROPBEAR_ECC
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help
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Enables full support for elliptic curve cryptography (ECC)
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in key exchange and public key authentication.
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Key exchange algorithms:
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ecdh-sha2-nistp256 (*)
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ecdh-sha2-nistp384
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ecdh-sha2-nistp521
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Public key algorithms:
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ecdsa-sha2-nistp256 (*)
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ecdsa-sha2-nistp384
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ecdsa-sha2-nistp521
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(*) - basic ECC support; provided by DROPBEAR_ECC.
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Increases binary size by about 4 kB (MIPS).
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config DROPBEAR_ED25519
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bool "Ed25519 support"
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default n
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help
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This enables the following public key algorithm:
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ssh-ed25519
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Increases binary size by about 12 kB (MIPS).
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config DROPBEAR_CHACHA20POLY1305
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bool "Chacha20-Poly1305 support"
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default y
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help
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This enables the following authenticated encryption cipher:
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chacha20-poly1305@openssh.com
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Increases binary size by about 4 kB (MIPS).
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config DROPBEAR_ZLIB
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bool "Enable compression"
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default n
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help
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Enables compression using shared zlib library.
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Increases binary size by about 0.1 kB (MIPS) and requires additional 62 kB (MIPS)
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for a shared zlib library.
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config DROPBEAR_UTMP
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bool "Utmp support"
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default n
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depends on BUSYBOX_CONFIG_FEATURE_UTMP
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help
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This enables dropbear utmp support, the file /var/run/utmp is used to
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track who is currently logged in.
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config DROPBEAR_PUTUTLINE
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bool "Pututline support"
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default n
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depends on DROPBEAR_UTMP
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help
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Dropbear will use pututline() to write the utmp structure into the utmp file.
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config DROPBEAR_DBCLIENT
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bool "Build dropbear with dbclient"
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default y
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config DROPBEAR_SCP
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bool "Build dropbear with scp"
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default y
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endmenu
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