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1# SPDX-License-Identifier: GPL-2.0
2
3menu "Accelerated Cryptographic Algorithms for CPU (powerpc)"
4
5config CRYPTO_AES_PPC_SPE
6 tristate "Ciphers: AES, modes: ECB/CBC/CTR/XTS (SPE)"
7 depends on SPE
8 select CRYPTO_SKCIPHER
9 help
10 Block ciphers: AES cipher algorithms (FIPS-197)
11 Length-preserving ciphers: AES with ECB, CBC, CTR, and XTS modes
12
13 Architecture: powerpc using:
14 - SPE (Signal Processing Engine) extensions
15
16 SPE is available for:
17 - Processor Type: Freescale 8500
18 - CPU selection: e500 (8540)
19
20 This module should only be used for low power (router) devices
21 without hardware AES acceleration (e.g. caam crypto). It reduces the
22 size of the AES tables from 16KB to 8KB + 256 bytes and mitigates
23 timining attacks. Nevertheless it might be not as secure as other
24 architecture specific assembler implementations that work on 1KB
25 tables or 256 bytes S-boxes.
26
27config CRYPTO_AES_GCM_P10
28 tristate "Stitched AES/GCM acceleration support on P10 or later CPU (PPC)"
29 depends on PPC64 && CPU_LITTLE_ENDIAN && VSX
30 select CRYPTO_LIB_AES
31 select CRYPTO_ALGAPI
32 select CRYPTO_AEAD
33 select CRYPTO_SKCIPHER
34 select CRYPTO_SIMD
35 help
36 AEAD cipher: AES cipher algorithms (FIPS-197)
37 GCM (Galois/Counter Mode) authenticated encryption mode (NIST SP800-38D)
38 Architecture: powerpc64 using:
39 - little-endian
40 - Power10 or later features
41
42 Support for cryptographic acceleration instructions on Power10 or
43 later CPU. This module supports stitched acceleration for AES/GCM.
44
45config CRYPTO_DEV_VMX
46 bool "Support for VMX cryptographic acceleration instructions"
47 depends on PPC64 && VSX
48 help
49 Support for VMX cryptographic acceleration instructions.
50
51config CRYPTO_DEV_VMX_ENCRYPT
52 tristate "Encryption acceleration support on P8 CPU"
53 depends on CRYPTO_DEV_VMX
54 select CRYPTO_AES
55 select CRYPTO_CBC
56 select CRYPTO_CTR
57 select CRYPTO_GHASH
58 select CRYPTO_XTS
59 default m
60 help
61 Support for VMX cryptographic acceleration instructions on Power8 CPU.
62 This module supports acceleration for AES and GHASH in hardware. If you
63 choose 'M' here, this module will be called vmx-crypto.
64
65endmenu