diff options
Diffstat (limited to 'arm/v6/aes-decrypt-internal.asm')
| -rw-r--r-- | arm/v6/aes-decrypt-internal.asm | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/arm/v6/aes-decrypt-internal.asm b/arm/v6/aes-decrypt-internal.asm index 651636cc..0c8cfc5e 100644 --- a/arm/v6/aes-decrypt-internal.asm +++ b/arm/v6/aes-decrypt-internal.asm @@ -43,6 +43,67 @@ define(<X2>, <r12>) define(<X3>, <r14>) C lr +C AES_DECRYPT_ROUND(x0,x1,x2,x3,w0,w1,w2,w3,key) +define(<AES_DECRYPT_ROUND>, < + uxtb T0, $1 + ldr $5, [TABLE, T0, lsl #2] + uxtb T0, $2 + ldr $6, [TABLE, T0, lsl #2] + uxtb T0, $3 + ldr $7, [TABLE, T0, lsl #2] + uxtb T0, $4 + ldr $8, [TABLE, T0, lsl #2] + + uxtb T0, $4, ror #8 + add TABLE, TABLE, #1024 + ldr T0, [TABLE, T0, lsl #2] + eor $5, $5, T0 + uxtb T0, $1, ror #8 + ldr T0, [TABLE, T0, lsl #2] + eor $6, $6, T0 + uxtb T0, $2, ror #8 + ldr T0, [TABLE, T0, lsl #2] + eor $7, $7, T0 + uxtb T0, $3, ror #8 + ldr T0, [TABLE, T0, lsl #2] + eor $8, $8, T0 + + uxtb T0, $3, ror #16 + add TABLE, TABLE, #1024 + ldr T0, [TABLE, T0, lsl #2] + eor $5, $5, T0 + uxtb T0, $4, ror #16 + ldr T0, [TABLE, T0, lsl #2] + eor $6, $6, T0 + uxtb T0, $1, ror #16 + ldr T0, [TABLE, T0, lsl #2] + eor $7, $7, T0 + uxtb T0, $2, ror #16 + ldr T0, [TABLE, T0, lsl #2] + eor $8, $8, T0 + + uxtb T0, $2, ror #24 + add TABLE, TABLE, #1024 + ldr T0, [TABLE, T0, lsl #2] + eor $5, $5, T0 + uxtb T0, $3, ror #24 + ldr T0, [TABLE, T0, lsl #2] + eor $6, $6, T0 + uxtb T0, $4, ror #24 + ldr T0, [TABLE, T0, lsl #2] + eor $7, $7, T0 + uxtb T0, $1, ror #24 + ldr T0, [TABLE, T0, lsl #2] + + ldm $9!, {$1,$2,$3,$4} + eor $8, $8, T0 + sub TABLE, TABLE, #3072 + eor $5, $5, $1 + eor $6, $6, $2 + eor $7, $7, $3 + eor $8, $8, $4 +>) + .file "aes-decrypt-internal.asm" C _aes_decrypt(struct aes_context *ctx, |