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sm4: reduce slice checking internally

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Sun Yimin 2024-03-27 09:36:56 +08:00 committed by GitHub
parent e4909bed2d
commit 34dd5104ee
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GPG Key ID: B5690EEEBB952194
5 changed files with 12 additions and 7 deletions
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4
sm4/cipher_asm.go
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@ -71,6 +71,10 @@ func (c *sm4CipherAsm) Encrypt(dst, src []byte) {
if alias.InexactOverlap(dst[:BlockSize], src[:BlockSize]) {
panic("sm4: invalid buffer overlap")
}
c.encrypt(dst, src)
}
func (c *sm4CipherAsm) encrypt(dst, src []byte) {
if useAESNI4SingleBlock {
encryptBlockAsm(&c.enc[0], &dst[0], &src[0], INST_AES)
} else {

3
sm4/ctr_cipher_asm.go
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@ -66,7 +66,8 @@ func (x *ctr) refill() {
copy(x.out, x.out[x.outUsed:])
x.out = x.out[:cap(x.out)]
for remain <= len(x.out)-x.b.blocksSize {
x.b.EncryptBlocks(x.out[remain:], x.ctr)
encryptBlocksAsm(&x.b.enc[0], x.out[remain:], x.ctr, INST_AES)
remain += x.b.blocksSize
// Generate complelte [x.b.batchBlocks] counters

4
sm4/gcm_cipher_asm.go
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@ -93,7 +93,7 @@ func (g *gcm) Seal(dst, nonce, plaintext, data []byte) []byte {
var counter, tagMask [gcmBlockSize]byte
g.deriveCounter(&counter, nonce)
g.cipher.Encrypt(tagMask[:], counter[:])
g.cipher.encrypt(tagMask[:], counter[:])
gcmInc32(&counter)
g.counterCrypt(out, plaintext, &counter)
@ -130,7 +130,7 @@ func (g *gcm) Open(dst, nonce, ciphertext, data []byte) ([]byte, error) {
var counter, tagMask [gcmBlockSize]byte
g.deriveCounter(&counter, nonce)
g.cipher.Encrypt(tagMask[:], counter[:])
g.cipher.encrypt(tagMask[:], counter[:])
gcmInc32(&counter)
var expectedTag [gcmTagSize]byte

4
sm4/sm4_gcm_asm.go
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@ -80,7 +80,7 @@ func (g *gcmAsm) Seal(dst, nonce, plaintext, data []byte) []byte {
gcmSm4Finish(&g.bytesProductTable, &tagMask, &counter, uint64(len(nonce)), uint64(0))
}
g.cipher.Encrypt(tagMask[:], counter[:])
g.cipher.encrypt(tagMask[:], counter[:])
var tagOut [gcmTagSize]byte
gcmSm4Data(&g.bytesProductTable, data, &tagOut)
@ -134,7 +134,7 @@ func (g *gcmAsm) Open(dst, nonce, ciphertext, data []byte) ([]byte, error) {
gcmSm4Finish(&g.bytesProductTable, &tagMask, &counter, uint64(len(nonce)), uint64(0))
}
g.cipher.Encrypt(tagMask[:], counter[:])
g.cipher.encrypt(tagMask[:], counter[:])
var expectedTag [gcmTagSize]byte
gcmSm4Data(&g.bytesProductTable, data, &expectedTag)

4
sm4/sm4ni_gcm_asm.go
View File

@ -73,7 +73,7 @@ func (g *gcmNI) Seal(dst, nonce, plaintext, data []byte) []byte {
gcmSm4Finish(&g.bytesProductTable, &tagMask, &counter, uint64(len(nonce)), uint64(0))
}
g.cipher.Encrypt(tagMask[:], counter[:])
encryptBlockAsm(&g.cipher.enc[0], &tagMask[0], &counter[0], INST_SM4)
var tagOut [gcmTagSize]byte
gcmSm4Data(&g.bytesProductTable, data, &tagOut)
@ -127,7 +127,7 @@ func (g *gcmNI) Open(dst, nonce, ciphertext, data []byte) ([]byte, error) {
gcmSm4Finish(&g.bytesProductTable, &tagMask, &counter, uint64(len(nonce)), uint64(0))
}
g.cipher.Encrypt(tagMask[:], counter[:])
encryptBlockAsm(&g.cipher.enc[0], &tagMask[0], &counter[0], INST_SM4)
var expectedTag [gcmTagSize]byte
gcmSm4Data(&g.bytesProductTable, data, &expectedTag)