Another port of existing x86 SSE code to NEON, again both for arm64 and ARM. ChaCha20 is a stream cipher described in RFC 7539, and is intended to be an efficient software implementable 'standby cipher', in case AES cannot be used. This NEON implementation is almost 2x as fast as the generic C code (measured on Cortex-A57 using the arm64 version) Changes in v2: - add patch to convert the generic and x86 to skciphers first - tweaked the arm64 version for some additional performance - use chunksize == 4x blocksize for optimal speed Ard Biesheuvel (3): crypto: chacha20 - convert generic and x86 versions to skcipher crypto: arm64/chacha20 - implement NEON version based on SSE3 code crypto: arm/chacha20 - implement NEON version based on SSE3 code arch/arm/crypto/Kconfig | 6 + arch/arm/crypto/Makefile | 2 + arch/arm/crypto/chacha20-neon-core.S | 524 ++++++++++++++++++++ arch/arm/crypto/chacha20-neon-glue.c | 127 +++++ arch/arm64/crypto/Kconfig | 6 + arch/arm64/crypto/Makefile | 3 + arch/arm64/crypto/chacha20-neon-core.S | 450 +++++++++++++++++ arch/arm64/crypto/chacha20-neon-glue.c | 122 +++++ arch/x86/crypto/chacha20_glue.c | 69 ++- crypto/chacha20_generic.c | 73 ++- include/crypto/chacha20.h | 6 +- 11 files changed, 1304 insertions(+), 84 deletions(-) create mode 100644 arch/arm/crypto/chacha20-neon-core.S create mode 100644 arch/arm/crypto/chacha20-neon-glue.c create mode 100644 arch/arm64/crypto/chacha20-neon-core.S create mode 100644 arch/arm64/crypto/chacha20-neon-glue.c -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
