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Add AES_GCM_GHASH_GLOBAL() to allow using encrypted data directly from GPU memory to avoid reserving registers

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This commit is contained in:
Jens Steube 2021-04-08 13:19:27 +02:00
parent b7951262e7
commit 57213e6c6c
5 changed files with 110 additions and 10 deletions
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97
OpenCL/inc_cipher_aes-gcm.cl
View File

@ -115,6 +115,65 @@ DECLSPEC void AES_GCM_ghash (const u32 *subkey, const u32 *in, u32 in_len, u32 *
}
}
DECLSPEC void AES_GCM_ghash_global (const u32 *subkey, GLOBAL_AS const u32 *in, u32 in_len, u32 *out)
{
u32 m = in_len / 16;
GLOBAL_AS const u32 *xpos = in;
u32 tmp[4] = { 0 };
for (u32 i = 0; i < m; i++)
{
u32 t2[4];
t2[0] = xpos[0];
t2[1] = xpos[1];
t2[2] = xpos[2];
t2[3] = xpos[3];
AES_GCM_xor_block (out, t2);
xpos += 4;
AES_GCM_gf_mult (out, subkey, tmp);
out[0] = tmp[0];
out[1] = tmp[1];
out[2] = tmp[2];
out[3] = tmp[3];
}
if (in + (in_len/4) > xpos)
{
u32 last = in + (in_len/4) - xpos;
for (u32 i = 0; i < last; i++)
{
tmp[i] = xpos[i];
}
for (u32 i = last; i < 4; i++)
{
tmp[i] = 0;
}
AES_GCM_xor_block (out, tmp);
AES_GCM_gf_mult (out, subkey, tmp);
tmp[0] = hc_swap32_S (tmp[0]);
tmp[1] = hc_swap32_S (tmp[1]);
tmp[2] = hc_swap32_S (tmp[2]);
tmp[3] = hc_swap32_S (tmp[3]);
out[0] = tmp[0];
out[1] = tmp[1];
out[2] = tmp[2];
out[3] = tmp[3];
}
}
DECLSPEC void AES_GCM_Init (const u32 *ukey, u32 key_len, u32 *key, u32 *subkey, SHM_TYPE u32 *s_te0, SHM_TYPE u32 *s_te1, SHM_TYPE u32 *s_te2, SHM_TYPE u32 *s_te3, SHM_TYPE u32 *s_te4)
{
if (key_len == 128)
@ -205,7 +264,7 @@ DECLSPEC void AES_GCM_gctr (const u32 *key, const u32 *iv, const u32 *in, u32 in
}
}
DECLSPEC void AES_GCM_GCTR (u32 *key, u32 *J0, u32 *in, u32 in_len, u32 *out, SHM_TYPE u32 *s_te0, SHM_TYPE u32 *s_te1, SHM_TYPE u32 *s_te2, SHM_TYPE u32 *s_te3, SHM_TYPE u32 *s_te4)
DECLSPEC void AES_GCM_GCTR (u32 *key, u32 *J0, const u32 *in, u32 in_len, u32 *out, SHM_TYPE u32 *s_te0, SHM_TYPE u32 *s_te1, SHM_TYPE u32 *s_te2, SHM_TYPE u32 *s_te3, SHM_TYPE u32 *s_te4)
{
u32 J0_incr[4];
@ -217,7 +276,7 @@ DECLSPEC void AES_GCM_GCTR (u32 *key, u32 *J0, u32 *in, u32 in_len, u32 *out, SH
AES_GCM_gctr (key, J0_incr, in, in_len, out, s_te0, s_te1, s_te2, s_te3, s_te4);
}
DECLSPEC void AES_GCM_GHASH (const u32 *subkey, const u32 *aad_buf, u32 aad_len, u32 *enc_buf, u32 enc_len, u32 *out)
DECLSPEC void AES_GCM_GHASH (const u32 *subkey, const u32 *aad_buf, u32 aad_len, const u32 *enc_buf, u32 enc_len, u32 *out)
{
out[0] = 0;
out[1] = 0;
@ -250,3 +309,37 @@ DECLSPEC void AES_GCM_GHASH (const u32 *subkey, const u32 *aad_buf, u32 aad_len,
AES_GCM_ghash (subkey, len_buf, 16, out);
}
DECLSPEC void AES_GCM_GHASH_GLOBAL (const u32 *subkey, const u32 *aad_buf, u32 aad_len, GLOBAL_AS const u32 *enc_buf, u32 enc_len, u32 *out)
{
out[0] = 0;
out[1] = 0;
out[2] = 0;
out[3] = 0;
AES_GCM_ghash (subkey, aad_buf, aad_len, out);
// untested swap
/*
out[0] = hc_swap32_S (out[0]);
out[1] = hc_swap32_S (out[1]);
out[2] = hc_swap32_S (out[2]);
out[3] = hc_swap32_S (out[3]);
*/
AES_GCM_ghash_global (subkey, enc_buf, enc_len, out);
out[0] = hc_swap32_S (out[0]);
out[1] = hc_swap32_S (out[1]);
out[2] = hc_swap32_S (out[2]);
out[3] = hc_swap32_S (out[3]);
u32 len_buf[4];
len_buf[0] = aad_len * 8;
len_buf[1] = 0;
len_buf[2] = 0;
len_buf[3] = enc_len * 8;
AES_GCM_ghash (subkey, len_buf, 16, out);
}

6
OpenCL/inc_cipher_aes-gcm.h
View File

@ -10,10 +10,12 @@ DECLSPEC void AES_GCM_inc32 (u32 *block);
DECLSPEC void AES_GCM_xor_block (u32 *dst, const u32 *src);
DECLSPEC void AES_GCM_gf_mult (const u32 *x, const u32 *y, u32 *z);
DECLSPEC void AES_GCM_ghash (const u32 *subkey, const u32 *in, u32 in_len, u32 *out);
DECLSPEC void AES_GCM_ghash_global (const u32 *subkey, GLOBAL_AS const u32 *in, u32 in_len, u32 *out);
DECLSPEC void AES_GCM_Init (const u32 *ukey, u32 key_len, u32 *key, u32 *subkey, SHM_TYPE u32 *s_te0, SHM_TYPE u32 *s_te1, SHM_TYPE u32 *s_te2, SHM_TYPE u32 *s_te3, SHM_TYPE u32 *s_te4);
DECLSPEC void AES_GCM_Prepare_J0 (const u32 *iv, u32 iv_len, const u32 *subkey, u32 *J0);
DECLSPEC void AES_GCM_gctr (const u32 *key, const u32 *iv, const u32 *in, u32 in_len, u32 *out, SHM_TYPE u32 *s_te0, SHM_TYPE u32 *s_te1, SHM_TYPE u32 *s_te2, SHM_TYPE u32 *s_te3, SHM_TYPE u32 *s_te4);
DECLSPEC void AES_GCM_GCTR (u32 *key, u32 *J0, u32 *in, u32 in_len, u32 *out, SHM_TYPE u32 *s_te0, SHM_TYPE u32 *s_te1, SHM_TYPE u32 *s_te2, SHM_TYPE u32 *s_te3, SHM_TYPE u32 *s_te4);
DECLSPEC void AES_GCM_GHASH (const u32 *subkey, const u32 *aad_buf, u32 aad_len, u32 *enc_buf, u32 enc_len, u32 *out);
DECLSPEC void AES_GCM_GCTR (u32 *key, u32 *J0, const u32 *in, u32 in_len, u32 *out, SHM_TYPE u32 *s_te0, SHM_TYPE u32 *s_te1, SHM_TYPE u32 *s_te2, SHM_TYPE u32 *s_te3, SHM_TYPE u32 *s_te4);
DECLSPEC void AES_GCM_GHASH (const u32 *subkey, const u32 *aad_buf, u32 aad_len, const u32 *enc_buf, u32 enc_len, u32 *out);
DECLSPEC void AES_GCM_GHASH_GLOBAL (const u32 *subkey, const u32 *aad_buf, u32 aad_len, GLOBAL_AS const u32 *enc_buf, u32 enc_len, u32 *out);
#endif // _INC_CIPHER_AES_GCM_H

3
OpenCL/m25500-optimized.cl
View File

@ -4,7 +4,6 @@
*/
#define NEW_SIMD_CODE
#define AES_GCM_ALT1
#ifdef KERNEL_STATIC
#include "inc_vendor.h"
@ -35,7 +34,7 @@ typedef struct pbkdf2_sha256_aes_gcm
u32 salt_buf[64];
u32 iv_buf[4];
u32 iv_len;
u32 ct_buf[14];
u32 ct_buf[16];
u32 ct_len;
} pbkdf2_sha256_aes_gcm_t;

9
OpenCL/m25500-pure.cl
View File

@ -4,7 +4,6 @@
*/
#define NEW_SIMD_CODE
#define AES_GCM_ALT1
#ifdef KERNEL_STATIC
#include "inc_vendor.h"
@ -35,7 +34,7 @@ typedef struct pbkdf2_sha256_aes_gcm
u32 salt_buf[64];
u32 iv_buf[4];
u32 iv_len;
u32 ct_buf[14];
u32 ct_buf[16];
u32 ct_len;
} pbkdf2_sha256_aes_gcm_t;
@ -350,6 +349,7 @@ KERNEL_FQ void m25500_comp (KERN_ATTR_TMPS_ESALT (pbkdf2_sha256_tmp_t, pbkdf2_sh
// ct
/*
u32 enc[14] = { 0 };
enc[ 0] = esalt_bufs[DIGESTS_OFFSET].ct_buf[ 0];
@ -368,6 +368,7 @@ KERNEL_FQ void m25500_comp (KERN_ATTR_TMPS_ESALT (pbkdf2_sha256_tmp_t, pbkdf2_sh
enc[13] = esalt_bufs[DIGESTS_OFFSET].ct_buf[13];
u32 enc_len = esalt_bufs[DIGESTS_OFFSET].ct_len;
*/
/*
// decrypt buffer is not usefull here, skip
@ -383,7 +384,9 @@ KERNEL_FQ void m25500_comp (KERN_ATTR_TMPS_ESALT (pbkdf2_sha256_tmp_t, pbkdf2_sh
u32 aad_buf[4] = { 0 };
u32 aad_len = 0;
AES_GCM_GHASH (subKey, aad_buf, aad_len, enc, enc_len, S);
//AES_GCM_GHASH (subKey, aad_buf, aad_len, enc, enc_len, S);
AES_GCM_GHASH_GLOBAL (subKey, aad_buf, aad_len, esalt_bufs[DIGESTS_OFFSET].ct_buf, esalt_bufs[DIGESTS_OFFSET].ct_len, S);
AES_GCM_GCTR (key, J0, S, S_len, T, s_te0, s_te1, s_te2, s_te3, s_te4);

5
src/modules/module_25500.c
View File

@ -59,7 +59,7 @@ typedef struct pbkdf2_sha256_aes_gcm
u32 salt_buf[64];
u32 iv_buf[4];
u32 iv_len;
u32 ct_buf[14];
u32 ct_buf[16];
u32 ct_len;
} pbkdf2_sha256_aes_gcm_t;
@ -214,6 +214,9 @@ int module_hash_decode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSE
stellar->ct_buf[i] = byte_swap_32 (stellar->ct_buf[i]);
}
stellar->ct_buf[14] = 0;
stellar->ct_buf[15] = 0;
stellar->ct_len = tmp_len - 16;
// tag