aes

Documentation

Overview

THESE PACKAGES ARE FOR DEMONSTRATION PURPOSES ONLY!

THEY DO NOT NOT CONTAIN WORKING INTRINSICS!

See https://github.com/klauspost/intrinsics

Index

• func AesdecSi128(a x86.M128i, RoundKey x86.M128i) (dst x86.M128i)
• func AesdeclastSi128(a x86.M128i, RoundKey x86.M128i) (dst x86.M128i)
• func AesencSi128(a x86.M128i, RoundKey x86.M128i) (dst x86.M128i)
• func AesenclastSi128(a x86.M128i, RoundKey x86.M128i) (dst x86.M128i)
• func AesimcSi128(a x86.M128i) (dst x86.M128i)
• func AeskeygenassistSi128(a x86.M128i, imm8 byte) (dst x86.M128i)

Functions

func AesdecSi128

func AesdecSi128(a x86.M128i, RoundKey x86.M128i) (dst x86.M128i)

AesdecSi128: Perform one round of an AES decryption flow on data (state) in 'a' using the round key in 'RoundKey', and store the result in 'dst'."

state := a
a[127:0] := InvShiftRows(a[127:0])
a[127:0] := InvSubBytes(a[127:0])
a[127:0] := InvMixColumns(a[127:0])
dst[127:0] := a[127:0] XOR RoundKey[127:0]

Instruction: 'AESDEC'. Intrinsic: '_mm_aesdec_si128'. Requires AES.

func AesdeclastSi128

func AesdeclastSi128(a x86.M128i, RoundKey x86.M128i) (dst x86.M128i)

AesdeclastSi128: Perform the last round of an AES decryption flow on data (state) in 'a' using the round key in 'RoundKey', and store the result in 'dst'."

state := a
a[127:0] := InvShiftRows(a[127:0])
a[127:0] := InvSubBytes(a[127:0])
dst[127:0] := a[127:0] XOR RoundKey[127:0]

Instruction: 'AESDECLAST'. Intrinsic: '_mm_aesdeclast_si128'. Requires AES.

func AesencSi128

func AesencSi128(a x86.M128i, RoundKey x86.M128i) (dst x86.M128i)

AesencSi128: Perform one round of an AES encryption flow on data (state) in 'a' using the round key in 'RoundKey', and store the result in 'dst'."

state := a
a[127:0] := ShiftRows(a[127:0])
a[127:0] := SubBytes(a[127:0])
a[127:0] := MixColumns(a[127:0])
dst[127:0] := a[127:0] XOR RoundKey[127:0]

Instruction: 'AESENC'. Intrinsic: '_mm_aesenc_si128'. Requires AES.

func AesenclastSi128

func AesenclastSi128(a x86.M128i, RoundKey x86.M128i) (dst x86.M128i)

AesenclastSi128: Perform the last round of an AES encryption flow on data (state) in 'a' using the round key in 'RoundKey', and store the result in 'dst'."

state := a
a[127:0] := ShiftRows(a[127:0])
a[127:0] := SubBytes(a[127:0])
dst[127:0] := a[127:0] XOR RoundKey[127:0]

Instruction: 'AESENCLAST'. Intrinsic: '_mm_aesenclast_si128'. Requires AES.

func AesimcSi128

func AesimcSi128(a x86.M128i) (dst x86.M128i)

AesimcSi128: Perform the InvMixColumns transformation on 'a' and store the result in 'dst'.

dst[127:0] := InvMixColumns(a[127:0])

Instruction: 'AESIMC'. Intrinsic: '_mm_aesimc_si128'. Requires AES.

func AeskeygenassistSi128

func AeskeygenassistSi128(a x86.M128i, imm8 byte) (dst x86.M128i)

AeskeygenassistSi128: Assist in expanding the AES cipher key by computing steps towards generating a round key for encryption cipher using data from 'a' and an 8-bit round constant specified in 'imm8', and store the result in 'dst'."

X3[31:0] := a[127:96]
X2[31:0] := a[95:64]
X1[31:0] := a[63:32]
X0[31:0] := a[31:0]
RCON[31:0] := ZeroExtend(imm8[7:0]);
dst[31:0] := SubWord(X1)
dst[63:32] := (RotWord(SubWord(X1)) XOR RCON;
dst[95:64] := SubWord(X3)
dst[127:96] := RotWord(SubWord(X3)) XOR RCON;

Instruction: 'AESKEYGENASSIST'. Intrinsic: '_mm_aeskeygenassist_si128'. Requires AES.

FIXME: Requires compiler support (has immediate)