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The Linux kernel configuration item CONFIG_CRYPTO_AES_S390
has multiple definitions:
arch/s390/crypto/Kconfig
The configuration item CONFIG_CRYPTO_AES_S390:
CONFIG_S390
aes_s390
, aes_s390
, aes_s390
, paes_s390
Block cipher: AES cipher algorithms (FIPS 197) AEAD cipher: AES with GCM Length-preserving ciphers: AES with ECB, CBC, XTS, and CTR modes
Architecture: s390
As of z9 the ECB and CBC modes are hardware accelerated for 128 bit keys.
As of z10 the ECB and CBC modes are hardware accelerated for all AES key sizes.
As of z196 the CTR mode is hardware accelerated for all AES key sizes and XTS mode is hardware accelerated for 256 and 512 bit keys.
crypto/Kconfig
The configuration item CONFIG_CRYPTO_AES_S390:
CONFIG_S390
aes_s390
, aes_s390
, aes_s390
, paes_s390
This is the s390 hardware accelerated implementation of the AES cipher algorithms (FIPS-197).
As of z9 the ECB and CBC modes are hardware accelerated for 128 bit keys. As of z10 the ECB and CBC modes are hardware accelerated for all AES key sizes. As of z196 the CTR mode is hardware accelerated for all AES key sizes and XTS mode is hardware accelerated for 256 and 512 bit keys.
drivers/crypto/Kconfig
The configuration item CONFIG_CRYPTO_AES_S390:
CONFIG_S390
aes_s390
, aes_s390
, aes_s390
, paes_s390
This is the s390 hardware accelerated implementation of the AES cipher algorithms (FIPS-197).
As of z9 the ECB and CBC modes are hardware accelerated for 128 bit keys. As of z10 the ECB and CBC modes are hardware accelerated for all AES key sizes. As of z196 the CTR mode is hardware accelerated for all AES key sizes and XTS mode is hardware accelerated for 256 and 512 bit keys.
arch/s390/crypto/Kconfig
The configuration item CONFIG_CRYPTO_AES_S390:
CONFIG_S390
aes_s390
, aes_s390
, aes_s390
, paes_s390
This is the s390 hardware accelerated implementation of the AES cipher algorithms (FIPS-197). AES uses the Rijndael algorithm.
Rijndael appears to be consistently a very good performer in both hardware and software across a wide range of computing environments regardless of its use in feedback or non-feedback modes. Its key setup time is excellent, and its key agility is good. Rijndael's very low memory requirements make it very well suited for restricted-space environments, in which it also demonstrates excellent performance. Rijndael's operations are among the easiest to defend against power and timing attacks.
On s390 the System z9-109 currently only supports the key size of 128 bit.
crypto/Kconfig
The configuration item CONFIG_CRYPTO_AES_S390:
CONFIG_S390
aes_s390
, aes_s390
, aes_s390
, paes_s390
This is the s390 hardware accelerated implementation of the AES cipher algorithms (FIPS-197). AES uses the Rijndael algorithm.
Rijndael appears to be consistently a very good performer in both hardware and software across a wide range of computing environments regardless of its use in feedback or non-feedback modes. Its key setup time is excellent, and its key agility is good. Rijndael's very low memory requirements make it very well suited for restricted-space environments, in which it also demonstrates excellent performance. Rijndael's operations are among the easiest to defend against power and timing attacks.
On s390 the System z9-109 currently only supports the key size of 128 bit.
Raw data from LKDDb:
lkddb module aes_s390 CONFIG_CRYPTO_AES_S390 : arch/s390/crypto/Kconfig : "Ciphers: AES, modes: ECB, CBC, CTR, XTS, GCM" # in 2.6.21–2.6.24, 6.1–6.10, 6.11-rc+HEAD
lkddb module aes_s390 CONFIG_CRYPTO_AES_S390 : crypto/Kconfig : "AES cipher algorithms" # in 2.6.16–2.6.20, 5.19, 6.0, 6.0+HEAD
lkddb module aes_s390 CONFIG_CRYPTO_AES_S390 : drivers/crypto/Kconfig : "AES cipher algorithms" # in 2.6.25–2.6.39, 3.0–3.19, 4.0–4.20, 5.0–5.18, 5.19-rc+HEAD
lkddb module paes_s390 CONFIG_CRYPTO_AES_S390 : drivers/crypto/Kconfig : "AES cipher algorithms" # in 4.11–4.12
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Automatically generated (in year 2024). See also LKDDb sources on GitLab