diff options
Diffstat (limited to 'src/libsec/port/sha1block.c')
| -rw-r--r-- | src/libsec/port/sha1block.c | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/src/libsec/port/sha1block.c b/src/libsec/port/sha1block.c new file mode 100644 index 00000000..0ae920e3 --- /dev/null +++ b/src/libsec/port/sha1block.c @@ -0,0 +1,199 @@ +#include <u.h> +#include <libc.h> + +uchar* lastsbp; +ulong lastsblen; +u32int* lastsbs; +Lock slock; + +void +_sha1block(uchar *p, ulong len, u32int *s) +{ + u32int a, b, c, d, e, x; + uchar *end; + u32int *wp, *wend; + u32int w[80]; + +lock(&slock); +lastsbp=p; +lastsblen=len; +lastsbs=s; + + /* at this point, we have a multiple of 64 bytes */ + for(end = p+len; p < end;){ + a = s[0]; + b = s[1]; + c = s[2]; + d = s[3]; + e = s[4]; + + wend = w + 15; + for(wp = w; wp < wend; wp += 5){ + wp[0] = (p[0]<<24) | (p[1]<<16) | (p[2]<<8) | p[3]; + e += ((a<<5) | (a>>27)) + wp[0]; + e += 0x5a827999 + (((c^d)&b)^d); + b = (b<<30)|(b>>2); + + wp[1] = (p[4]<<24) | (p[5]<<16) | (p[6]<<8) | p[7]; + d += ((e<<5) | (e>>27)) + wp[1]; + d += 0x5a827999 + (((b^c)&a)^c); + a = (a<<30)|(a>>2); + + wp[2] = (p[8]<<24) | (p[9]<<16) | (p[10]<<8) | p[11]; + c += ((d<<5) | (d>>27)) + wp[2]; + c += 0x5a827999 + (((a^b)&e)^b); + e = (e<<30)|(e>>2); + + wp[3] = (p[12]<<24) | (p[13]<<16) | (p[14]<<8) | p[15]; + b += ((c<<5) | (c>>27)) + wp[3]; + b += 0x5a827999 + (((e^a)&d)^a); + d = (d<<30)|(d>>2); + + wp[4] = (p[16]<<24) | (p[17]<<16) | (p[18]<<8) | p[19]; + a += ((b<<5) | (b>>27)) + wp[4]; + a += 0x5a827999 + (((d^e)&c)^e); + c = (c<<30)|(c>>2); + + p += 20; + } + + wp[0] = (p[0]<<24) | (p[1]<<16) | (p[2]<<8) | p[3]; + e += ((a<<5) | (a>>27)) + wp[0]; + e += 0x5a827999 + (((c^d)&b)^d); + b = (b<<30)|(b>>2); + + x = wp[-2] ^ wp[-7] ^ wp[-13] ^ wp[-15]; + wp[1] = (x<<1) | (x>>31); + d += ((e<<5) | (e>>27)) + wp[1]; + d += 0x5a827999 + (((b^c)&a)^c); + a = (a<<30)|(a>>2); + + x = wp[-1] ^ wp[-6] ^ wp[-12] ^ wp[-14]; + wp[2] = (x<<1) | (x>>31); + c += ((d<<5) | (d>>27)) + wp[2]; + c += 0x5a827999 + (((a^b)&e)^b); + e = (e<<30)|(e>>2); + + x = wp[0] ^ wp[-5] ^ wp[-11] ^ wp[-13]; + wp[3] = (x<<1) | (x>>31); + b += ((c<<5) | (c>>27)) + wp[3]; + b += 0x5a827999 + (((e^a)&d)^a); + d = (d<<30)|(d>>2); + + x = wp[1] ^ wp[-4] ^ wp[-10] ^ wp[-12]; + wp[4] = (x<<1) | (x>>31); + a += ((b<<5) | (b>>27)) + wp[4]; + a += 0x5a827999 + (((d^e)&c)^e); + c = (c<<30)|(c>>2); + + wp += 5; + p += 4; + + wend = w + 40; + for(; wp < wend; wp += 5){ + x = wp[-3] ^ wp[-8] ^ wp[-14] ^ wp[-16]; + wp[0] = (x<<1) | (x>>31); + e += ((a<<5) | (a>>27)) + wp[0]; + e += 0x6ed9eba1 + (b^c^d); + b = (b<<30)|(b>>2); + + x = wp[-2] ^ wp[-7] ^ wp[-13] ^ wp[-15]; + wp[1] = (x<<1) | (x>>31); + d += ((e<<5) | (e>>27)) + wp[1]; + d += 0x6ed9eba1 + (a^b^c); + a = (a<<30)|(a>>2); + + x = wp[-1] ^ wp[-6] ^ wp[-12] ^ wp[-14]; + wp[2] = (x<<1) | (x>>31); + c += ((d<<5) | (d>>27)) + wp[2]; + c += 0x6ed9eba1 + (e^a^b); + e = (e<<30)|(e>>2); + + x = wp[0] ^ wp[-5] ^ wp[-11] ^ wp[-13]; + wp[3] = (x<<1) | (x>>31); + b += ((c<<5) | (c>>27)) + wp[3]; + b += 0x6ed9eba1 + (d^e^a); + d = (d<<30)|(d>>2); + + x = wp[1] ^ wp[-4] ^ wp[-10] ^ wp[-12]; + wp[4] = (x<<1) | (x>>31); + a += ((b<<5) | (b>>27)) + wp[4]; + a += 0x6ed9eba1 + (c^d^e); + c = (c<<30)|(c>>2); + } + + wend = w + 60; + for(; wp < wend; wp += 5){ + x = wp[-3] ^ wp[-8] ^ wp[-14] ^ wp[-16]; + wp[0] = (x<<1) | (x>>31); + e += ((a<<5) | (a>>27)) + wp[0]; + e += 0x8f1bbcdc + ((b&c)|((b|c)&d)); + b = (b<<30)|(b>>2); + + x = wp[-2] ^ wp[-7] ^ wp[-13] ^ wp[-15]; + wp[1] = (x<<1) | (x>>31); + d += ((e<<5) | (e>>27)) + wp[1]; + d += 0x8f1bbcdc + ((a&b)|((a|b)&c)); + a = (a<<30)|(a>>2); + + x = wp[-1] ^ wp[-6] ^ wp[-12] ^ wp[-14]; + wp[2] = (x<<1) | (x>>31); + c += ((d<<5) | (d>>27)) + wp[2]; + c += 0x8f1bbcdc + ((e&a)|((e|a)&b)); + e = (e<<30)|(e>>2); + + x = wp[0] ^ wp[-5] ^ wp[-11] ^ wp[-13]; + wp[3] = (x<<1) | (x>>31); + b += ((c<<5) | (c>>27)) + wp[3]; + b += 0x8f1bbcdc + ((d&e)|((d|e)&a)); + d = (d<<30)|(d>>2); + + x = wp[1] ^ wp[-4] ^ wp[-10] ^ wp[-12]; + wp[4] = (x<<1) | (x>>31); + a += ((b<<5) | (b>>27)) + wp[4]; + a += 0x8f1bbcdc + ((c&d)|((c|d)&e)); + c = (c<<30)|(c>>2); + } + + wend = w + 80; + for(; wp < wend; wp += 5){ + x = wp[-3] ^ wp[-8] ^ wp[-14] ^ wp[-16]; + wp[0] = (x<<1) | (x>>31); + e += ((a<<5) | (a>>27)) + wp[0]; + e += 0xca62c1d6 + (b^c^d); + b = (b<<30)|(b>>2); + + x = wp[-2] ^ wp[-7] ^ wp[-13] ^ wp[-15]; + wp[1] = (x<<1) | (x>>31); + d += ((e<<5) | (e>>27)) + wp[1]; + d += 0xca62c1d6 + (a^b^c); + a = (a<<30)|(a>>2); + + x = wp[-1] ^ wp[-6] ^ wp[-12] ^ wp[-14]; + wp[2] = (x<<1) | (x>>31); + c += ((d<<5) | (d>>27)) + wp[2]; + c += 0xca62c1d6 + (e^a^b); + e = (e<<30)|(e>>2); + + x = wp[0] ^ wp[-5] ^ wp[-11] ^ wp[-13]; + wp[3] = (x<<1) | (x>>31); + b += ((c<<5) | (c>>27)) + wp[3]; + b += 0xca62c1d6 + (d^e^a); + d = (d<<30)|(d>>2); + + x = wp[1] ^ wp[-4] ^ wp[-10] ^ wp[-12]; + wp[4] = (x<<1) | (x>>31); + a += ((b<<5) | (b>>27)) + wp[4]; + a += 0xca62c1d6 + (c^d^e); + c = (c<<30)|(c>>2); + } + + /* save state */ + s[0] += a; + s[1] += b; + s[2] += c; + s[3] += d; + s[4] += e; + } +unlock(&slock); +} |