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8ca3246081
linux
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security
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keys
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encrypted-keys
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ecryptfs_format.c
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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441 Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation version 2 of the license extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 315 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Armijn Hemel <armijn@tjaldur.nl> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190531190115.503150771@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-01 10:08:55 +02:00
encrypted-keys: add ecryptfs format support The 'encrypted' key type defines its own payload format which contains a symmetric key randomly generated that cannot be used directly to mount an eCryptfs filesystem, because it expects an authentication token structure. This patch introduces the new format 'ecryptfs' that allows to store an authentication token structure inside the encrypted key payload containing a randomly generated symmetric key, as the same for the format 'default'. More details about the usage of encrypted keys with the eCryptfs filesystem can be found in the file 'Documentation/keys-ecryptfs.txt'. Signed-off-by: Roberto Sassu <roberto.sassu@polito.it> Acked-by: Gianluca Ramunno <ramunno@polito.it> Acked-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com> Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
2011-06-27 13:45:44 +02:00
Replace HTTP links with HTTPS ones: security Rationale: Reduces attack surface on kernel devs opening the links for MITM as HTTPS traffic is much harder to manipulate. Deterministic algorithm: For each file: If not .svg: For each line: If doesn't contain `\bxmlns\b`: For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`: If both the HTTP and HTTPS versions return 200 OK and serve the same content: Replace HTTP with HTTPS. Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de> Acked-by: John Johansen <john.johansen@canonical.com> Signed-off-by: James Morris <jmorris@namei.org>
2020-07-05 23:45:12 +02:00
encrypted-keys: add ecryptfs format support The 'encrypted' key type defines its own payload format which contains a symmetric key randomly generated that cannot be used directly to mount an eCryptfs filesystem, because it expects an authentication token structure. This patch introduces the new format 'ecryptfs' that allows to store an authentication token structure inside the encrypted key payload containing a randomly generated symmetric key, as the same for the format 'default'. More details about the usage of encrypted keys with the eCryptfs filesystem can be found in the file 'Documentation/keys-ecryptfs.txt'. Signed-off-by: Roberto Sassu <roberto.sassu@polito.it> Acked-by: Gianluca Ramunno <ramunno@polito.it> Acked-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com> Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
2011-06-27 13:45:44 +02:00
keys: remove needless modular infrastructure from ecryptfs_format Even though the support can be modular, only one file needs to use all the macros like MODULE_AUTHOR, MODULE_LICENSE etc. Only the one responsible for registering/removal with module_init/module_exit needs to declare these. In this case, that file is "encrypted.c" and it already has the MODULE_LICENSE that we are removing here. Since the file does EXPORT_SYMBOL, we add export.h - and build tests show that module.h (which includes everything) was hiding an implicit use of string.h - so that is added as well. Cc: Mimi Zohar <zohar@linux.ibm.com> Cc: David Howells <dhowells@redhat.com> Cc: James Morris <jmorris@namei.org> Cc: "Serge E. Hallyn" <serge@hallyn.com> Cc: linux-integrity@vger.kernel.org Cc: keyrings@vger.kernel.org Cc: linux-security-module@vger.kernel.org Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: James Morris <james.morris@microsoft.com>
2018-12-09 15:36:30 -05:00
encrypted-keys: add ecryptfs format support The 'encrypted' key type defines its own payload format which contains a symmetric key randomly generated that cannot be used directly to mount an eCryptfs filesystem, because it expects an authentication token structure. This patch introduces the new format 'ecryptfs' that allows to store an authentication token structure inside the encrypted key payload containing a randomly generated symmetric key, as the same for the format 'default'. More details about the usage of encrypted keys with the eCryptfs filesystem can be found in the file 'Documentation/keys-ecryptfs.txt'. Signed-off-by: Roberto Sassu <roberto.sassu@polito.it> Acked-by: Gianluca Ramunno <ramunno@polito.it> Acked-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com> Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
2011-06-27 13:45:44 +02:00
keys: Replace deprecated strncpy in ecryptfs_fill_auth_tok strncpy() is deprecated for NUL-terminated destination buffers; use strscpy_pad() instead to retain the NUL-padding behavior of strncpy(). The destination buffer is initialized using kzalloc() with a 'signature' size of ECRYPTFS_PASSWORD_SIG_SIZE + 1. strncpy() then copies up to ECRYPTFS_PASSWORD_SIG_SIZE bytes from 'key_desc', NUL-padding any remaining bytes if needed, but expects the last byte to be zero. strscpy_pad() also copies the source string to 'signature', and NUL-pads the destination buffer if needed, but ensures it's always NUL-terminated without relying on it being zero-initialized. strscpy_pad() automatically determines the size of the fixed-length destination buffer via sizeof() when the optional size argument is omitted, making an explicit size unnecessary. In encrypted_init(), the source string 'key_desc' is validated by valid_ecryptfs_desc() before calling ecryptfs_fill_auth_tok(), and is therefore NUL-terminated and satisfies the __must_be_cstr() requirement of strscpy_pad(). Link: https://github.com/KSPP/linux/issues/90 Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev> Reviewed-by: Kees Cook <kees@kernel.org> Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org> Reviewed-by: Paul Menzel <pmenzel@molgen.mpg.de> Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
2025-10-13 17:26:28 +02:00
encrypted-keys: add ecryptfs format support The 'encrypted' key type defines its own payload format which contains a symmetric key randomly generated that cannot be used directly to mount an eCryptfs filesystem, because it expects an authentication token structure. This patch introduces the new format 'ecryptfs' that allows to store an authentication token structure inside the encrypted key payload containing a randomly generated symmetric key, as the same for the format 'default'. More details about the usage of encrypted keys with the eCryptfs filesystem can be found in the file 'Documentation/keys-ecryptfs.txt'. Signed-off-by: Roberto Sassu <roberto.sassu@polito.it> Acked-by: Gianluca Ramunno <ramunno@polito.it> Acked-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com> Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
2011-06-27 13:45:44 +02:00
