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1 # SPDX-License-Identifier: GPL-2.0
14 	  GCM GHASH function (NIST SP800-38D)
17 	  - PMULL (Polynomial Multiply Long) instructions
18 	  - NEON (Advanced SIMD) extensions
19 	  - ARMv8 Crypto Extensions
34 	  - NEON (Advanced SIMD) extensions
44 	  - NEON (Advanced SIMD) extensions
49 	  much faster than the SHA-2 family and slightly faster than
50 	  SHA-1.
57 	  Block ciphers: AES cipher algorithms (FIPS-197)
63 	  blocks, the NEON bit-sliced implementation is usually faster.
67 	  disables IRQs and preloads the tables; it is hoped this makes
71 	tristate "Ciphers: AES, modes: ECB/CBC/CTR/XTS (bit-sliced NEON)"
77 	  Length-preserving ciphers: AES cipher algorithms (FIPS-197)
79 	   - ECB (Electronic Codebook) mode (NIST SP800-38A)
80 	   - CBC (Cipher Block Chaining) mode (NIST SP800-38A)
81 	   - CTR (Counter) mode (NIST SP800-38A)
82 	   - XTS (XOR Encrypt XOR with ciphertext stealing) mode (NIST SP800-38E
83 	     and IEEE 1619)
85 	  Bit sliced AES gives around 45% speedup on Cortex-A15 for CTR mode
86 	  and for XTS mode encryption, CBC and XTS mode decryption speedup is
87 	  around 25%. (CBC encryption speed is not affected by this driver.)
91 	  sliced AES code cannot process single blocks efficiently, in certain
92 	  cases table-based code with some countermeasures against cache timing
95 	  ciphertext stealing when the message isn't a multiple of 16 bytes, and
96 	  CTR when invoked in a context in which NEON instructions are unusable.
104 	  Length-preserving ciphers: AES cipher algorithms (FIPS-197)
106 	   - ECB (Electronic Codebook) mode (NIST SP800-38A)
107 	   - CBC (Cipher Block Chaining) mode (NIST SP800-38A)
108 	   - CTR (Counter) mode (NIST SP800-38A)
109 	   - CTS (Cipher Text Stealing) mode (NIST SP800-38A)
110 	   - XTS (XOR Encrypt XOR with ciphertext stealing) mode (NIST SP800-38E
111 	     and IEEE 1619)
114 	  - ARMv8 Crypto Extensions