arno/hashcat
1
0
Fork 0
mirror of https://github.com/hashcat/hashcat.git synced 2024-11-18 06:08:16 +00:00
Code Issues Releases Wiki Activity
9b556b3500
hashcat/OpenCL/m08000_a0-optimized.cl
Jens Steube fa9d073f9a Manually unroll sha2 hashes
2019-05-11 23:15:58 +02:00

574 lines
16 KiB
Common Lisp
Raw Blame History

/**
* Author......: See docs/credits.txt
* License.....: MIT
*/
#define NEW_SIMD_CODE
#ifdef KERNEL_STATIC
#include "inc_vendor.h"
#include "inc_types.h"
#include "inc_platform.cl"
#include "inc_common.cl"
#include "inc_rp_optimized.h"
#include "inc_rp_optimized.cl"
#include "inc_simd.cl"
#include "inc_hash_sha256.cl"
#endif
DECLSPEC void sha256_transform_m (u32x *digest, const u32x *w)
{
u32x a = digest[0];
u32x b = digest[1];
u32x c = digest[2];
u32x d = digest[3];
u32x e = digest[4];
u32x f = digest[5];
u32x g = digest[6];
u32x h = digest[7];
u32x w0_t = w[ 0];
u32x w1_t = w[ 1];
u32x w2_t = w[ 2];
u32x w3_t = w[ 3];
u32x w4_t = w[ 4];
u32x w5_t = w[ 5];
u32x w6_t = w[ 6];
u32x w7_t = w[ 7];
u32x w8_t = w[ 8];
u32x w9_t = w[ 9];
u32x wa_t = w[10];
u32x wb_t = w[11];
u32x wc_t = w[12];
u32x wd_t = w[13];
u32x we_t = w[14];
u32x wf_t = w[15];
#define ROUND_EXPAND() \
{ \
w0_t = SHA256_EXPAND (we_t, w9_t, w1_t, w0_t); \
w1_t = SHA256_EXPAND (wf_t, wa_t, w2_t, w1_t); \
w2_t = SHA256_EXPAND (w0_t, wb_t, w3_t, w2_t); \
w3_t = SHA256_EXPAND (w1_t, wc_t, w4_t, w3_t); \
w4_t = SHA256_EXPAND (w2_t, wd_t, w5_t, w4_t); \
w5_t = SHA256_EXPAND (w3_t, we_t, w6_t, w5_t); \
w6_t = SHA256_EXPAND (w4_t, wf_t, w7_t, w6_t); \
w7_t = SHA256_EXPAND (w5_t, w0_t, w8_t, w7_t); \
w8_t = SHA256_EXPAND (w6_t, w1_t, w9_t, w8_t); \
w9_t = SHA256_EXPAND (w7_t, w2_t, wa_t, w9_t); \
wa_t = SHA256_EXPAND (w8_t, w3_t, wb_t, wa_t); \
wb_t = SHA256_EXPAND (w9_t, w4_t, wc_t, wb_t); \
wc_t = SHA256_EXPAND (wa_t, w5_t, wd_t, wc_t); \
wd_t = SHA256_EXPAND (wb_t, w6_t, we_t, wd_t); \
we_t = SHA256_EXPAND (wc_t, w7_t, wf_t, we_t); \
wf_t = SHA256_EXPAND (wd_t, w8_t, w0_t, wf_t); \
}
#define ROUND_STEP(i) \
{ \
SHA256_STEP (SHA256_F0o, SHA256_F1o, a, b, c, d, e, f, g, h, w0_t, k_sha256[i + 0]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, h, a, b, c, d, e, f, g, w1_t, k_sha256[i + 1]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, g, h, a, b, c, d, e, f, w2_t, k_sha256[i + 2]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, f, g, h, a, b, c, d, e, w3_t, k_sha256[i + 3]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, e, f, g, h, a, b, c, d, w4_t, k_sha256[i + 4]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, d, e, f, g, h, a, b, c, w5_t, k_sha256[i + 5]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, c, d, e, f, g, h, a, b, w6_t, k_sha256[i + 6]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, b, c, d, e, f, g, h, a, w7_t, k_sha256[i + 7]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, a, b, c, d, e, f, g, h, w8_t, k_sha256[i + 8]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, h, a, b, c, d, e, f, g, w9_t, k_sha256[i + 9]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, g, h, a, b, c, d, e, f, wa_t, k_sha256[i + 10]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, f, g, h, a, b, c, d, e, wb_t, k_sha256[i + 11]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, e, f, g, h, a, b, c, d, wc_t, k_sha256[i + 12]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, d, e, f, g, h, a, b, c, wd_t, k_sha256[i + 13]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, c, d, e, f, g, h, a, b, we_t, k_sha256[i + 14]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, b, c, d, e, f, g, h, a, wf_t, k_sha256[i + 15]); \
}
ROUND_STEP (0);
#ifdef IS_CUDA
ROUND_EXPAND (); ROUND_STEP (16);
ROUND_EXPAND (); ROUND_STEP (32);
ROUND_EXPAND (); ROUND_STEP (48);
#else
#ifdef _unroll
#pragma unroll
#endif
for (int i = 16; i < 64; i += 16)
{
ROUND_EXPAND (); ROUND_STEP (i);
}
#endif
digest[0] += a;
digest[1] += b;
digest[2] += c;
digest[3] += d;
digest[4] += e;
digest[5] += f;
digest[6] += g;
digest[7] += h;
}
DECLSPEC void sha256_transform_z (u32x *digest)
{
u32x a = digest[0];
u32x b = digest[1];
u32x c = digest[2];
u32x d = digest[3];
u32x e = digest[4];
u32x f = digest[5];
u32x g = digest[6];
u32x h = digest[7];
#define ROUND_STEP_Z(i) \
{ \
SHA256_STEP (SHA256_F0o, SHA256_F1o, a, b, c, d, e, f, g, h, 0, k_sha256[i + 0]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, h, a, b, c, d, e, f, g, 0, k_sha256[i + 1]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, g, h, a, b, c, d, e, f, 0, k_sha256[i + 2]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, f, g, h, a, b, c, d, e, 0, k_sha256[i + 3]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, e, f, g, h, a, b, c, d, 0, k_sha256[i + 4]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, d, e, f, g, h, a, b, c, 0, k_sha256[i + 5]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, c, d, e, f, g, h, a, b, 0, k_sha256[i + 6]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, b, c, d, e, f, g, h, a, 0, k_sha256[i + 7]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, a, b, c, d, e, f, g, h, 0, k_sha256[i + 8]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, h, a, b, c, d, e, f, g, 0, k_sha256[i + 9]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, g, h, a, b, c, d, e, f, 0, k_sha256[i + 10]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, f, g, h, a, b, c, d, e, 0, k_sha256[i + 11]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, e, f, g, h, a, b, c, d, 0, k_sha256[i + 12]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, d, e, f, g, h, a, b, c, 0, k_sha256[i + 13]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, c, d, e, f, g, h, a, b, 0, k_sha256[i + 14]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, b, c, d, e, f, g, h, a, 0, k_sha256[i + 15]); \
}
ROUND_STEP_Z (0);
#ifdef IS_CUDA
ROUND_STEP_Z (16);
ROUND_STEP_Z (32);
ROUND_STEP_Z (48);
#else
#ifdef _unroll
#pragma unroll
#endif
for (int i = 16; i < 64; i += 16)
{
ROUND_STEP_Z (i);
}
#endif
digest[0] += a;
digest[1] += b;
digest[2] += c;
digest[3] += d;
digest[4] += e;
digest[5] += f;
digest[6] += g;
digest[7] += h;
}
DECLSPEC void sha256_transform_s (u32x *digest, LOCAL_AS u32 *w)
{
u32x a = digest[0];
u32x b = digest[1];
u32x c = digest[2];
u32x d = digest[3];
u32x e = digest[4];
u32x f = digest[5];
u32x g = digest[6];
u32x h = digest[7];
#define ROUND_STEP_S(i) \
{ \
SHA256_STEP (SHA256_F0o, SHA256_F1o, a, b, c, d, e, f, g, h, w[i + 0], k_sha256[i + 0]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, h, a, b, c, d, e, f, g, w[i + 1], k_sha256[i + 1]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, g, h, a, b, c, d, e, f, w[i + 2], k_sha256[i + 2]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, f, g, h, a, b, c, d, e, w[i + 3], k_sha256[i + 3]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, e, f, g, h, a, b, c, d, w[i + 4], k_sha256[i + 4]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, d, e, f, g, h, a, b, c, w[i + 5], k_sha256[i + 5]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, c, d, e, f, g, h, a, b, w[i + 6], k_sha256[i + 6]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, b, c, d, e, f, g, h, a, w[i + 7], k_sha256[i + 7]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, a, b, c, d, e, f, g, h, w[i + 8], k_sha256[i + 8]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, h, a, b, c, d, e, f, g, w[i + 9], k_sha256[i + 9]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, g, h, a, b, c, d, e, f, w[i + 10], k_sha256[i + 10]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, f, g, h, a, b, c, d, e, w[i + 11], k_sha256[i + 11]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, e, f, g, h, a, b, c, d, w[i + 12], k_sha256[i + 12]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, d, e, f, g, h, a, b, c, w[i + 13], k_sha256[i + 13]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, c, d, e, f, g, h, a, b, w[i + 14], k_sha256[i + 14]); \
SHA256_STEP (SHA256_F0o, SHA256_F1o, b, c, d, e, f, g, h, a, w[i + 15], k_sha256[i + 15]); \
}
ROUND_STEP_S (0);
#ifdef _unroll
#pragma unroll
#endif
for (int i = 16; i < 64; i += 16)
{
ROUND_STEP_S (i);
}
digest[0] += a;
digest[1] += b;
digest[2] += c;
digest[3] += d;
digest[4] += e;
digest[5] += f;
digest[6] += g;
digest[7] += h;
}
KERNEL_FQ void m08000_m04 (KERN_ATTR_RULES ())
{
/**
* modifier
*/
const u64 gid = get_global_id (0);
const u64 lid = get_local_id (0);
const u64 lsz = get_local_size (0);
/**
* salt
*/
const u32 salt_buf0 = hc_swap32_S (salt_bufs[salt_pos].salt_buf[ 0]);
const u32 salt_buf1 = hc_swap32_S (salt_bufs[salt_pos].salt_buf[ 1]);
const u32 salt_buf2 = hc_swap32_S (salt_bufs[salt_pos].salt_buf[ 2]); // 0x80
/**
* precompute final msg blocks
*/
LOCAL_VK u32 w_s1[64];
LOCAL_VK u32 w_s2[64];
for (u32 i = lid; i < 64; i += lsz)
{
w_s1[i] = 0;
w_s2[i] = 0;
}
SYNC_THREADS ();
if (lid == 0)
{
w_s1[15] = 0 | salt_buf0 >> 16;
#ifdef _unroll
#pragma unroll
#endif
for (int i = 16; i < 64; i++)
{
w_s1[i] = SHA256_EXPAND_S (w_s1[i - 2], w_s1[i - 7], w_s1[i - 15], w_s1[i - 16]);
}
w_s2[ 0] = salt_buf0 << 16 | salt_buf1 >> 16;
w_s2[ 1] = salt_buf1 << 16 | salt_buf2 >> 16;
w_s2[ 2] = salt_buf2 << 16 | 0;
w_s2[15] = (510 + 8) * 8;
#ifdef _unroll
#pragma unroll
#endif
for (int i = 16; i < 64; i++)
{
w_s2[i] = SHA256_EXPAND_S (w_s2[i - 2], w_s2[i - 7], w_s2[i - 15], w_s2[i - 16]);
}
}
SYNC_THREADS ();
if (gid >= gid_max) return;
/**
* base
*/
u32 pw_buf0[4];
u32 pw_buf1[4];
pw_buf0[0] = pws[gid].i[ 0];
pw_buf0[1] = pws[gid].i[ 1];
pw_buf0[2] = pws[gid].i[ 2];
pw_buf0[3] = pws[gid].i[ 3];
pw_buf1[0] = pws[gid].i[ 4];
pw_buf1[1] = pws[gid].i[ 5];
pw_buf1[2] = pws[gid].i[ 6];
pw_buf1[3] = pws[gid].i[ 7];
const u32 pw_len = pws[gid].pw_len & 63;
/**
* loop
*/
for (u32 il_pos = 0; il_pos < il_cnt; il_pos += VECT_SIZE)
{
u32x w0[4] = { 0 };
u32x w1[4] = { 0 };
u32x w2[4] = { 0 };
u32x w3[4] = { 0 };
apply_rules_vect_optimized (pw_buf0, pw_buf1, pw_len, rules_buf, il_pos, w0, w1);
u32x w0_t[4];
u32x w1_t[4];
u32x w2_t[4];
u32x w3_t[4];
make_utf16le (w0, w0_t, w1_t);
make_utf16le (w1, w2_t, w3_t);
u32x w_t[16];
w_t[ 0] = hc_swap32 (w0_t[0]);
w_t[ 1] = hc_swap32 (w0_t[1]);
w_t[ 2] = hc_swap32 (w0_t[2]);
w_t[ 3] = hc_swap32 (w0_t[3]);
w_t[ 4] = hc_swap32 (w1_t[0]);
w_t[ 5] = hc_swap32 (w1_t[1]);
w_t[ 6] = hc_swap32 (w1_t[2]);
w_t[ 7] = hc_swap32 (w1_t[3]);
w_t[ 8] = hc_swap32 (w2_t[0]);
w_t[ 9] = hc_swap32 (w2_t[1]);
w_t[10] = hc_swap32 (w2_t[2]);
w_t[11] = hc_swap32 (w2_t[3]);
w_t[12] = hc_swap32 (w3_t[0]);
w_t[13] = hc_swap32 (w3_t[1]);
w_t[14] = hc_swap32 (w3_t[2]);
w_t[15] = hc_swap32 (w3_t[3]);
w_t[ 0] = w_t[ 0] >> 8;
w_t[ 1] = w_t[ 1] >> 8;
w_t[ 2] = w_t[ 2] >> 8;
w_t[ 3] = w_t[ 3] >> 8;
w_t[ 4] = w_t[ 4] >> 8;
w_t[ 5] = w_t[ 5] >> 8;
w_t[ 6] = w_t[ 6] >> 8;
w_t[ 7] = w_t[ 7] >> 8;
w_t[ 8] = w_t[ 8] >> 8;
w_t[ 9] = w_t[ 9] >> 8;
w_t[10] = w_t[10] >> 8;
w_t[11] = w_t[11] >> 8;
w_t[12] = w_t[12] >> 8;
w_t[13] = w_t[13] >> 8;
w_t[14] = w_t[14] >> 8;
w_t[15] = w_t[15] >> 8;
u32x digest[8];
digest[0] = SHA256M_A;
digest[1] = SHA256M_B;
digest[2] = SHA256M_C;
digest[3] = SHA256M_D;
digest[4] = SHA256M_E;
digest[5] = SHA256M_F;
digest[6] = SHA256M_G;
digest[7] = SHA256M_H;
sha256_transform_m (digest, w_t); // 0 - 64
sha256_transform_z (digest); // 64 - 128
sha256_transform_z (digest); // 128 - 192
sha256_transform_z (digest); // 192 - 256
sha256_transform_z (digest); // 256 - 320
sha256_transform_z (digest); // 320 - 384
sha256_transform_z (digest); // 384 - 448
sha256_transform_s (digest, w_s1); // 448 - 512
sha256_transform_s (digest, w_s2); // 512 - 576
COMPARE_M_SIMD (digest[3], digest[7], digest[2], digest[6]);
}
}
KERNEL_FQ void m08000_m08 (KERN_ATTR_RULES ())
{
}
KERNEL_FQ void m08000_m16 (KERN_ATTR_RULES ())
{
}
KERNEL_FQ void m08000_s04 (KERN_ATTR_RULES ())
{
/**
* modifier
*/
const u64 gid = get_global_id (0);
const u64 lid = get_local_id (0);
const u64 lsz = get_local_size (0);
/**
* salt
*/
const u32 salt_buf0 = hc_swap32_S (salt_bufs[salt_pos].salt_buf[ 0]);
const u32 salt_buf1 = hc_swap32_S (salt_bufs[salt_pos].salt_buf[ 1]);
const u32 salt_buf2 = hc_swap32_S (salt_bufs[salt_pos].salt_buf[ 2]); // 0x80
/**
* precompute final msg blocks
*/
LOCAL_VK u32 w_s1[64];
LOCAL_VK u32 w_s2[64];
for (u32 i = lid; i < 64; i += lsz)
{
w_s1[i] = 0;
w_s2[i] = 0;
}
SYNC_THREADS ();
if (lid == 0)
{
w_s1[15] = 0 | salt_buf0 >> 16;
#ifdef _unroll
#pragma unroll
#endif
for (int i = 16; i < 64; i++)
{
w_s1[i] = SHA256_EXPAND_S (w_s1[i - 2], w_s1[i - 7], w_s1[i - 15], w_s1[i - 16]);
}
w_s2[ 0] = salt_buf0 << 16 | salt_buf1 >> 16;
w_s2[ 1] = salt_buf1 << 16 | salt_buf2 >> 16;
w_s2[ 2] = salt_buf2 << 16 | 0;
w_s2[15] = (510 + 8) * 8;
#ifdef _unroll
#pragma unroll
#endif
for (int i = 16; i < 64; i++)
{
w_s2[i] = SHA256_EXPAND_S (w_s2[i - 2], w_s2[i - 7], w_s2[i - 15], w_s2[i - 16]);
}
}
SYNC_THREADS ();
if (gid >= gid_max) return;
/**
* base
*/
u32 pw_buf0[4];
u32 pw_buf1[4];
pw_buf0[0] = pws[gid].i[ 0];
pw_buf0[1] = pws[gid].i[ 1];
pw_buf0[2] = pws[gid].i[ 2];
pw_buf0[3] = pws[gid].i[ 3];
pw_buf1[0] = pws[gid].i[ 4];
pw_buf1[1] = pws[gid].i[ 5];
pw_buf1[2] = pws[gid].i[ 6];
pw_buf1[3] = pws[gid].i[ 7];
const u32 pw_len = pws[gid].pw_len & 63;
/**
* digest
*/
const u32 search[4] =
{
digests_buf[digests_offset].digest_buf[DGST_R0],
digests_buf[digests_offset].digest_buf[DGST_R1],
digests_buf[digests_offset].digest_buf[DGST_R2],
digests_buf[digests_offset].digest_buf[DGST_R3]
};
/**
* loop
*/
for (u32 il_pos = 0; il_pos < il_cnt; il_pos += VECT_SIZE)
{
u32x w0[4] = { 0 };
u32x w1[4] = { 0 };
u32x w2[4] = { 0 };
u32x w3[4] = { 0 };
apply_rules_vect_optimized (pw_buf0, pw_buf1, pw_len, rules_buf, il_pos, w0, w1);
u32x w0_t[4];
u32x w1_t[4];
u32x w2_t[4];
u32x w3_t[4];
make_utf16le (w0, w0_t, w1_t);
make_utf16le (w1, w2_t, w3_t);
u32x w_t[16];
w_t[ 0] = hc_swap32 (w0_t[0]);
w_t[ 1] = hc_swap32 (w0_t[1]);
w_t[ 2] = hc_swap32 (w0_t[2]);
w_t[ 3] = hc_swap32 (w0_t[3]);
w_t[ 4] = hc_swap32 (w1_t[0]);
w_t[ 5] = hc_swap32 (w1_t[1]);
w_t[ 6] = hc_swap32 (w1_t[2]);
w_t[ 7] = hc_swap32 (w1_t[3]);
w_t[ 8] = hc_swap32 (w2_t[0]);
w_t[ 9] = hc_swap32 (w2_t[1]);
w_t[10] = hc_swap32 (w2_t[2]);
w_t[11] = hc_swap32 (w2_t[3]);
w_t[12] = hc_swap32 (w3_t[0]);
w_t[13] = hc_swap32 (w3_t[1]);
w_t[14] = hc_swap32 (w3_t[2]);
w_t[15] = hc_swap32 (w3_t[3]);
w_t[ 0] = w_t[ 0] >> 8;
w_t[ 1] = w_t[ 1] >> 8;
w_t[ 2] = w_t[ 2] >> 8;
w_t[ 3] = w_t[ 3] >> 8;
w_t[ 4] = w_t[ 4] >> 8;
w_t[ 5] = w_t[ 5] >> 8;
w_t[ 6] = w_t[ 6] >> 8;
w_t[ 7] = w_t[ 7] >> 8;
w_t[ 8] = w_t[ 8] >> 8;
w_t[ 9] = w_t[ 9] >> 8;
w_t[10] = w_t[10] >> 8;
w_t[11] = w_t[11] >> 8;
w_t[12] = w_t[12] >> 8;
w_t[13] = w_t[13] >> 8;
w_t[14] = w_t[14] >> 8;
w_t[15] = w_t[15] >> 8;
u32x digest[8];
digest[0] = SHA256M_A;
digest[1] = SHA256M_B;
digest[2] = SHA256M_C;
digest[3] = SHA256M_D;
digest[4] = SHA256M_E;
digest[5] = SHA256M_F;
digest[6] = SHA256M_G;
digest[7] = SHA256M_H;
sha256_transform_m (digest, w_t); // 0 - 64
sha256_transform_z (digest); // 64 - 128
sha256_transform_z (digest); // 128 - 192
sha256_transform_z (digest); // 192 - 256
sha256_transform_z (digest); // 256 - 320
sha256_transform_z (digest); // 320 - 384
sha256_transform_z (digest); // 384 - 448
sha256_transform_s (digest, w_s1); // 448 - 512
sha256_transform_s (digest, w_s2); // 512 - 576
COMPARE_S_SIMD (digest[3], digest[7], digest[2], digest[6]);
}
}
KERNEL_FQ void m08000_s08 (KERN_ATTR_RULES ())
{
}
KERNEL_FQ void m08000_s16 (KERN_ATTR_RULES ())
{
}
Reference in New Issue View Git Blame Copy Permalink