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| author | Denys Vlasenko <vda.linux@googlemail.com> | 2018-11-25 14:03:59 +0100 |
|---|---|---|
| committer | Denys Vlasenko <vda.linux@googlemail.com> | 2018-11-25 14:03:59 +0100 |
| commit | be5ca42e8d5f36145cca6c2120899e7e2ad4f0b3 (patch) | |
| tree | 82128dc2958a2ff9a295ecba1c6c78073d2676d3 | |
| parent | 23d0d8caf42b6b55e531b2405d949c6606ed3e85 (diff) | |
| download | busybox-be5ca42e8d5f36145cca6c2120899e7e2ad4f0b3.tar.gz | |
tls: code shrink
function old new delta
aesgcm_GHASH 223 196 -27
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| -rw-r--r-- | networking/tls.c | 2 | ||||
| -rw-r--r-- | networking/tls_aesgcm.c | 18 |
2 files changed, 14 insertions, 6 deletions
diff --git a/networking/tls.c b/networking/tls.c index 7bdd58018..85a4e21dd 100644 --- a/networking/tls.c +++ b/networking/tls.c @@ -867,7 +867,6 @@ static void xwrite_encrypted_aesgcm(tls_state_t *tls, unsigned size, unsigned ty xorbuf_aligned_AES_BLOCK_SIZE(authtag, scratch); memcpy(buf, authtag, sizeof(authtag)); -#undef COUNTER /* Write out */ xhdr = (void*)(tls->outbuf + OUTBUF_PFX - 8 - RECHDR_LEN); @@ -881,6 +880,7 @@ static void xwrite_encrypted_aesgcm(tls_state_t *tls, unsigned size, unsigned ty dump_raw_out(">> %s\n", xhdr, size); xwrite(tls->ofd, xhdr, size); dbg("wrote %u bytes\n", size); +#undef COUNTER } static void xwrite_encrypted(tls_state_t *tls, unsigned size, unsigned type) diff --git a/networking/tls_aesgcm.c b/networking/tls_aesgcm.c index 32ca40260..688df85fb 100644 --- a/networking/tls_aesgcm.c +++ b/networking/tls_aesgcm.c @@ -87,8 +87,8 @@ void FAST_FUNC aesgcm_GHASH(byte* h, ) { byte x[AES_BLOCK_SIZE] ALIGNED_long; - byte scratch[AES_BLOCK_SIZE] ALIGNED_long; - word32 blocks, partial; +// byte scratch[AES_BLOCK_SIZE] ALIGNED_long; + unsigned blocks, partial; //was: byte* h = aes->H; //XMEMSET(x, 0, AES_BLOCK_SIZE); @@ -133,9 +133,17 @@ void FAST_FUNC aesgcm_GHASH(byte* h, } /* Hash in the lengths of A and C in bits */ - FlattenSzInBits(&scratch[0], aSz); - FlattenSzInBits(&scratch[8], cSz); - xorbuf_aligned_AES_BLOCK_SIZE(x, scratch); + //FlattenSzInBits(&scratch[0], aSz); + //FlattenSzInBits(&scratch[8], cSz); + //xorbuf_aligned_AES_BLOCK_SIZE(x, scratch); + // simpler: +#define P32(v) ((uint32_t*)v) + //P32(x)[0] ^= 0; + P32(x)[1] ^= SWAP_BE32(aSz * 8); + //P32(x)[2] ^= 0; + P32(x)[3] ^= SWAP_BE32(cSz * 8); +#undef P32 + GMULT(x, h); /* Copy the result into s. */ |