linux-stable.git/crypto/Kconfig, branch linux-6.8.y Linux kernel stable tree crypto: jitter - fix CRYPTO_JITTERENTROPY help text 2024-03-26T22:17:12+00:00 Randy Dunlap rdunlap@infradead.org 2024-02-17T16:55:13+00:00 3524a88db372d719dd653eb03827555eb91b1eb9 [ Upstream commit e63df1ec9a16dd9e13e9068243e64876de06f795 ] Correct various small problems in the help text: a. change 2 spaces to ", " b. finish an incomplete sentence c. change non-working URL to working URL Fixes: a9a98d49da52 ("crypto: Kconfig - simplify compression/RNG entries") Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218458 Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Bagas Sanjaya <bagasdotme@gmail.com> Cc: Robert Elliott <elliott@hpe.com> Cc: Christoph Biedl <bugzilla.kernel.bpeb@manchmal.in-ulm.de> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: "David S. Miller" <davem@davemloft.net> Cc: linux-crypto@vger.kernel.org Acked-by: Bagas Sanjaya <bagasdotme@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit e63df1ec9a16dd9e13e9068243e64876de06f795 ]

Correct various small problems in the help text:
a. change 2 spaces to ", "
b. finish an incomplete sentence
c. change non-working URL to working URL

Fixes: a9a98d49da52 ("crypto: Kconfig - simplify compression/RNG entries")
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218458
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Bagas Sanjaya <bagasdotme@gmail.com>
Cc: Robert Elliott <elliott@hpe.com>
Cc: Christoph Biedl <bugzilla.kernel.bpeb@manchmal.in-ulm.de>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: linux-crypto@vger.kernel.org
Acked-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
crypto: cfb,ofb - Remove cfb and ofb 2023-12-08T03:59:46+00:00 Herbert Xu herbert@gondor.apana.org.au 2023-11-30T12:25:02+00:00 412ac51ce0b8c5581b6ff57fff6501e905a5471f Remove the unused algorithms CFB/OFB. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> 
    
Remove the unused algorithms CFB/OFB.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
crypto: jitterentropy - Hide esoteric Kconfig options under FIPS and EXPERT 2023-11-07T08:44:35+00:00 Herbert Xu herbert@gondor.apana.org.au 2023-11-06T10:00:08+00:00 e7ed6473c2c8c4e45dd861bfa06e96189b11d8db As JITTERENTROPY is selected by default if you enable the CRYPTO API, any Kconfig options added there will show up for every single user. Hide the esoteric options under EXPERT as well as FIPS so that only distro makers will see them. Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Reviewed-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> 
As JITTERENTROPY is selected by default if you enable the CRYPTO
API, any Kconfig options added there will show up for every single
user.  Hide the esoteric options under EXPERT as well as FIPS so
that only distro makers will see them.

Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Reviewed-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
crypto: skcipher - Add dependency on ecb 2023-10-13T10:27:26+00:00 Herbert Xu herbert@gondor.apana.org.au 2023-10-03T03:31:55+00:00 845346841b77af84c88f1b709c63c14a58a64dc4 As lskcipher requires the ecb wrapper for the transition add an explicit dependency on it so that it is always present. This can be removed once all simple ciphers have been converted to lskcipher. Reported-by: Nathan Chancellor <nathan@kernel.org> Fixes: 705b52fef3c7 ("crypto: cbc - Convert from skcipher to lskcipher") Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Tested-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> 
As lskcipher requires the ecb wrapper for the transition add an
explicit dependency on it so that it is always present.  This can
be removed once all simple ciphers have been converted to lskcipher.

Reported-by: Nathan Chancellor <nathan@kernel.org>
Fixes: 705b52fef3c7 ("crypto: cbc - Convert from skcipher to lskcipher")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
crypto: jitter - Allow configuration of oversampling rate 2023-10-01T08:28:15+00:00 Stephan Müller smueller@chronox.de 2023-09-21T11:48:59+00:00 0baa8fab334a4d7017235b72fa8a547433572109 The oversampling rate used by the Jitter RNG allows the configuration of the heuristically implied entropy in one timing measurement. This entropy rate is (1 / OSR) bits of entropy per time stamp. Considering that the Jitter RNG now support APT/RCT health tests for different OSRs, allow this value to be configured at compile time to support systems with limited amount of entropy in their timer. The allowed range of OSR values complies with the APT/RCT cutoff health test values which range from 1 through 15. The default value of the OSR selection support is left at 1 which is the current default. Thus, the addition of the configuration support does not alter the default Jitter RNG behavior. Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> 
The oversampling rate used by the Jitter RNG allows the configuration of
the heuristically implied entropy in one timing measurement. This
entropy rate is (1 / OSR) bits of entropy per time stamp.

Considering that the Jitter RNG now support APT/RCT health tests for
different OSRs, allow this value to be configured at compile time to
support systems with limited amount of entropy in their timer.

The allowed range of OSR values complies with the APT/RCT cutoff health
test values which range from 1 through 15.

The default value of the OSR selection support is left at 1 which is the
current default. Thus, the addition of the configuration support does
not alter the default Jitter RNG behavior.

Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
crypto: jitter - Allow configuration of memory size 2023-10-01T08:28:15+00:00 Stephan Müller smueller@chronox.de 2023-09-21T11:48:33+00:00 59bcfd788552504606e3eb774ae68052379396b6 The memory size consumed by the Jitter RNG is one contributing factor in the amount of entropy that is gathered. As the amount of entropy directly correlates with the distance of the memory from the CPU, the caches that are possibly present on a given system have an impact on the collected entropy. Thus, the kernel compile time should offer a means to configure the amount of memory used by the Jitter RNG. Although this option could be turned into a runtime option (e.g. a kernel command line option), it should remain a compile time option as otherwise adminsitrators who may not have performed an entropy assessment may select a value that is inappropriate. The default value selected by the configuration is identical to the current Jitter RNG value. Thus, the patch should not lead to any change in the Jitter RNG behavior. To accommodate larger memory buffers, kvzalloc / kvfree is used. Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> 
The memory size consumed by the Jitter RNG is one contributing factor in
the amount of entropy that is gathered. As the amount of entropy
directly correlates with the distance of the memory from the CPU, the
caches that are possibly present on a given system have an impact on the
collected entropy.

Thus, the kernel compile time should offer a means to configure the
amount of memory used by the Jitter RNG. Although this option could be
turned into a runtime option (e.g. a kernel command line option), it
should remain a compile time option as otherwise adminsitrators who may
not have performed an entropy assessment may select a value that is
inappropriate.

The default value selected by the configuration is identical to the
current Jitter RNG value. Thus, the patch should not lead to any change
in the Jitter RNG behavior.

To accommodate larger memory buffers, kvzalloc / kvfree is used.

Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
crypto: sig - Add interface for sign/verify 2023-06-23T08:15:36+00:00 Herbert Xu herbert@gondor.apana.org.au 2023-06-15T10:28:48+00:00 6cb8815f41a966b217c0d9826c592254d72dcc31 Split out the sign/verify functionality from the existing akcipher interface. Most algorithms in akcipher either support encryption and decryption, or signing and verify. Only one supports both. As a signature algorithm may not support encryption at all, these two should be spearated. For now sig is simply a wrapper around akcipher as all algorithms remain unchanged. This is a first step and allows users to start allocating sig instead of akcipher. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> 
Split out the sign/verify functionality from the existing akcipher
interface.  Most algorithms in akcipher either support encryption
and decryption, or signing and verify.  Only one supports both.

As a signature algorithm may not support encryption at all, these
two should be spearated.

For now sig is simply a wrapper around akcipher as all algorithms
remain unchanged.  This is a first step and allows users to start
allocating sig instead of akcipher.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
crypto: geniv - Split geniv out of AEAD Kconfig option 2023-06-23T08:15:36+00:00 Herbert Xu herbert@gondor.apana.org.au 2023-06-13T09:13:35+00:00 ba51738fa78972fb446b49b6b9ddda4058a272e0 Give geniv its own Kconfig option so that its dependencies are distinct from that of the AEAD API code. This also allows it to be disabled if no IV generators (seqiv/echainiv) are enabled. Remove the obsolete select on RNG2 by SKCIPHER2 as skcipher IV generators disappeared long ago. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> 
Give geniv its own Kconfig option so that its dependencies are
distinct from that of the AEAD API code.  This also allows it
to be disabled if no IV generators (seqiv/echainiv) are enabled.

Remove the obsolete select on RNG2 by SKCIPHER2 as skcipher IV
generators disappeared long ago.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
crypto: algboss - Add missing dependency on RNG2 2023-06-23T08:15:36+00:00 Herbert Xu herbert@gondor.apana.org.au 2023-06-13T08:49:24+00:00 fb28fabfad332a731423ffdd2be122b73ea90f1e The testmgr code uses crypto_rng without depending on it. Add an explicit dependency to Kconfig. Also sort the MANAGER2 dependencies alphabetically. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> 
The testmgr code uses crypto_rng without depending on it.  Add
an explicit dependency to Kconfig.

Also sort the MANAGER2 dependencies alphabetically.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
crypto: Kconfig - warn about performance overhead of CRYPTO_STATS 2023-05-24T10:12:33+00:00 Eric Biggers ebiggers@google.com 2023-05-20T17:31:05+00:00 66dd59b7aa55d0ea6c0eebfbfe4353eadaac5e1b Make the help text for CRYPTO_STATS explicitly mention that it reduces the performance of the crypto API. Signed-off-by: Eric Biggers <ebiggers@google.com> Acked-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> 
Make the help text for CRYPTO_STATS explicitly mention that it reduces
the performance of the crypto API.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>