Gecko [ nrupathungauniversityblr.ac.in ]

Name	Size	Permission
.deps	[ DIR ]	drwxrwxr-x
.libs	[ DIR ]	drwxrwxr-x
.dirstamp	0 B	-rw-rw-r--
ImageMagick-7.Q16HDRI.pc	867 B	-rw-rw-r--
ImageMagick.pc	867 B	-rw-rw-r--
ImageMagick.pc.in	575 B	-rw-rw-r--
MagickCore-7.Q16HDRI.pc	916 B	-rw-rw-r--
MagickCore-config	1.5 KB	-rwxrwxr-x
MagickCore-config.1	1.85 KB	-rw-rw-r--
MagickCore-config.in	1.57 KB	-rw-rw-r--
MagickCore.h	4.94 KB	-rw-rw-r--
MagickCore.pc	916 B	-rw-rw-r--
MagickCore.pc.in	688 B	-rw-rw-r--
Makefile.am	14.76 KB	-rw-rw-r--
accelerate-kernels-private.h	102.16 KB	-rw-rw-r--
accelerate-private.h	2.63 KB	-rw-rw-r--
accelerate.c	169.72 KB	-rw-rw-r--
animate-private.h	1.23 KB	-rw-rw-r--
animate.c	103.29 KB	-rw-rw-r--
animate.h	979 B	-rw-rw-r--
annotate-private.h	1022 B	-rw-rw-r--
annotate.c	71.69 KB	-rw-rw-r--
annotate.h	1.26 KB	-rw-rw-r--
artifact.c	18.74 KB	-rw-rw-r--
artifact.h	1.35 KB	-rw-rw-r--
attribute.c	69.33 KB	-rw-rw-r--
attribute.h	1.78 KB	-rw-rw-r--
blob-private.h	4.07 KB	-rw-rw-r--
blob.c	207.68 KB	-rw-rw-r--
blob.h	3.29 KB	-rw-rw-r--
cache-private.h	6.63 KB	-rw-rw-r--
cache-view.c	44.83 KB	-rw-rw-r--
cache-view.h	3.63 KB	-rw-rw-r--
cache.c	211.11 KB	-rw-rw-r--
cache.h	2.5 KB	-rw-rw-r--
channel.c	41.69 KB	-rw-rw-r--
channel.h	1.28 KB	-rw-rw-r--
cipher.c	40.58 KB	-rw-rw-r--
cipher.h	1.11 KB	-rw-rw-r--
client.c	7.37 KB	-rw-rw-r--
client.h	1.03 KB	-rw-rw-r--
coder-private.h	1005 B	-rw-rw-r--
coder.c	20.03 KB	-rw-rw-r--
coder.h	1.28 KB	-rw-rw-r--
color-private.h	2.28 KB	-rw-rw-r--
color.c	105.5 KB	-rw-rw-r--
color.h	2.22 KB	-rw-rw-r--
colormap-private.h	1.8 KB	-rw-rw-r--
colormap.c	13.3 KB	-rw-rw-r--
colormap.h	1.05 KB	-rw-rw-r--
colorspace-private.h	4.23 KB	-rw-rw-r--
colorspace.c	99.03 KB	-rw-rw-r--
colorspace.h	2.35 KB	-rw-rw-r--
compare.c	72.32 KB	-rw-rw-r--
compare.h	1.86 KB	-rw-rw-r--
composite-private.h	5.5 KB	-rw-rw-r--
composite.c	81.18 KB	-rw-rw-r--
composite.h	2.85 KB	-rw-rw-r--
compress.c	39.93 KB	-rw-rw-r--
compress.h	2.15 KB	-rw-rw-r--
configure-private.h	1019 B	-rw-rw-r--
configure.c	44.68 KB	-rw-rw-r--
configure.h	1.65 KB	-rw-rw-r--
constitute-private.h	890 B	-rw-rw-r--
constitute.c	50.54 KB	-rw-rw-r--
constitute.h	1.45 KB	-rw-rw-r--
decorate.c	31.1 KB	-rw-rw-r--
decorate.h	1.34 KB	-rw-rw-r--
delegate-private.h	2.16 KB	-rw-rw-r--
delegate.c	83.77 KB	-rw-rw-r--
delegate.h	1.98 KB	-rw-rw-r--
deprecate.c	13.45 KB	-rw-rw-r--
deprecate.h	1.21 KB	-rw-rw-r--
display-private.h	1.24 KB	-rw-rw-r--
display.c	515.56 KB	-rw-rw-r--
display.h	1.05 KB	-rw-rw-r--
distort.c	134.29 KB	-rw-rw-r--
distort.h	2.65 KB	-rw-rw-r--
distribute-cache-private.h	2.24 KB	-rw-rw-r--
distribute-cache.c	49.1 KB	-rw-rw-r--
distribute-cache.h	997 B	-rw-rw-r--
draw-private.h	2.1 KB	-rw-rw-r--
draw.c	245.29 KB	-rw-rw-r--
draw.h	5.55 KB	-rw-rw-r--
effect.c	125.86 KB	-rw-rw-r--
effect.h	2.85 KB	-rw-rw-r--
enhance.c	137.51 KB	-rw-rw-r--
enhance.h	2.32 KB	-rw-rw-r--
exception-private.h	3.18 KB	-rw-rw-r--
exception.c	44.49 KB	-rw-rw-r--
exception.h	4.35 KB	-rw-rw-r--
feature.c	83.79 KB	-rw-rw-r--
feature.h	1.7 KB	-rw-rw-r--
fourier.c	49.36 KB	-rw-rw-r--
fourier.h	1.38 KB	-rw-rw-r--
fx-private.h	1.21 KB	-rw-rw-r--
fx.c	87.87 KB	-rw-rw-r--
fx.h	956 B	-rw-rw-r--
gem-private.h	6.28 KB	-rw-rw-r--
gem.c	53.31 KB	-rw-rw-r--
gem.h	1.15 KB	-rw-rw-r--
geometry.c	55.44 KB	-rw-rw-r--
geometry.h	3.98 KB	-rw-rw-r--
histogram.c	39.72 KB	-rw-rw-r--
histogram.h	1.35 KB	-rw-rw-r--
identify.c	57.07 KB	-rw-rw-r--
identify.h	971 B	-rw-rw-r--
image-private.h	2.89 KB	-rw-rw-r--
image-view.c	42.98 KB	-rw-rw-r--
image-view.h	2.72 KB	-rw-rw-r--
image.c	142.86 KB	-rw-rw-r--
image.h	13.87 KB	-rw-rw-r--
layer.c	75.49 KB	-rw-rw-r--
layer.h	2 KB	-rw-rw-r--
libMagickCore-7.Q16HDRI.la	1.32 KB	-rw-rw-r--
libMagickCore.map	46 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-acc...	374 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-acc...	6.25 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-ani...	365 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-ani...	245.7 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-ann...	368 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-ann...	225.34 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-art...	368 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-art...	57.34 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-att...	371 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-att...	198.58 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-blo...	356 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-blo...	559.89 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-cac...	374 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-cac...	130.77 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-cac...	359 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-cac...	575.03 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-cha...	365 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-cha...	132.27 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-cip...	362 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-cip...	99.63 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-cli...	362 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-cli...	11.99 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-cod...	359 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-cod...	48.66 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-col...	359 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-col...	187.05 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-col...	368 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-col...	64.29 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-col...	374 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-col...	416.23 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-com...	365 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-com...	244.2 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-com...	371 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-com...	205.62 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-com...	368 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-com...	116.91 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-con...	371 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-con...	92.49 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-con...	374 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-con...	134.21 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-dec...	368 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-dec...	140.39 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-del...	368 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-del...	181.88 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-dep...	371 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-dep...	40.1 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-dis...	365 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-dis...	1001.06 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-dis...	365 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-dis...	257.94 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-dis...	392 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-dis...	138.98 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-dra...	356 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-dra...	629.21 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-eff...	362 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-eff...	359.09 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-enh...	365 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-enh...	435.72 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-exc...	371 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-exc...	79.98 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-fea...	365 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-fea...	231.75 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-fou...	365 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-fou...	147.25 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-fx....	350 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-fx....	285.02 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-gem...	353 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-gem...	222.46 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-geo...	368 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-geo...	111.41 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-his...	371 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-his...	103.51 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-ide...	368 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-ide...	183.14 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-ima...	374 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-ima...	103.35 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-ima...	359 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-ima...	311.29 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-lay...	359 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-lay...	140.62 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-lin...	377 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-lin...	41.23 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-lis...	356 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-lis...	137.44 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-loc...	362 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-loc...	93.1 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-log...	353 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-log...	109.05 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-mag...	359 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-mag...	54.52 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-mag...	362 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-mag...	123.44 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-mat...	362 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-mat...	90.06 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-mem...	362 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-mem...	64.4 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-mim...	356 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-mim...	69.73 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-mod...	362 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-mod...	46.27 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-mon...	365 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-mon...	37.7 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-mon...	365 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-mon...	102.55 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-mor...	374 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-mor...	249.84 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-ope...	362 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-ope...	14.32 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-opt...	362 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-opt...	238.09 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-pai...	359 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-pai...	158.05 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-pix...	359 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-pix...	1.12 MB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-pol...	362 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-pol...	84.46 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-pre...	368 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-pre...	50.55 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-pro...	365 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-pro...	178.05 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-pro...	368 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-pro...	375.58 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-qua...	368 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-qua...	308.11 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-qua...	386 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-qua...	886.72 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-qua...	386 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-qua...	690.47 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-qua...	365 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-qua...	93.22 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-ran...	362 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-ran...	71.95 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-reg...	368 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-reg...	58.8 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-res...	368 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-res...	101.68 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-res...	362 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-res...	484.14 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-res...	368 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-res...	130.89 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-seg...	365 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-seg...	137.09 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-sem...	371 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-sem...	27.5 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-she...	359 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-she...	209.97 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-sig...	371 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-sig...	77.59 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-spl...	374 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-spl...	71.54 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-sta...	362 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-sta...	42.69 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-sta...	371 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-sta...	361.96 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-str...	362 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-str...	389.89 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-str...	362 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-str...	145.78 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-thr...	362 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-thr...	9.66 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-thr...	371 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-thr...	223.15 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-tim...	359 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-tim...	38.76 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-tok...	359 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-tok...	220.66 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-tra...	371 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-tra...	228.2 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-typ...	356 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-typ...	88.52 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-uti...	365 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-uti...	121.42 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-ver...	365 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-ver...	27.84 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-vis...	362 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-vis...	161.29 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-vis...	386 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-vis...	490.88 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-wid...	362 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-wid...	450.54 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-xml...	368 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-xml...	166.75 KB	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-xwi...	365 B	-rw-rw-r--
libMagickCore_7_Q16HDRI_la-xwi...	641.91 KB	-rw-rw-r--
linked-list.c	33.55 KB	-rw-rw-r--
linked-list.h	1.92 KB	-rw-rw-r--
list.c	52.79 KB	-rw-rw-r--
list.h	2.3 KB	-rw-rw-r--
locale-private.h	1.35 KB	-rw-rw-r--
locale.c	58.89 KB	-rw-rw-r--
locale_.h	2.2 KB	-rw-rw-r--
log-private.h	1 KB	-rw-rw-r--
log.c	56.53 KB	-rw-rw-r--
log.h	2.73 KB	-rw-rw-r--
magic-private.h	999 B	-rw-rw-r--
magic.c	27.52 KB	-rw-rw-r--
magic.h	1.32 KB	-rw-rw-r--
magick-baseconfig.h	44.5 KB	-rw-rw-r--
magick-config.h	8.75 KB	-rw-rw-r--
magick-private.h	1.04 KB	-rw-rw-r--
magick-type.h	5.78 KB	-rw-rw-r--
magick.c	66.91 KB	-rw-rw-r--
magick.h	4.18 KB	-rw-rw-r--
matrix-private.h	1.1 KB	-rw-rw-r--
matrix.c	38.14 KB	-rw-rw-r--
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mutex.h	3.03 KB	-rw-rw-r--
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quantum.h	5.1 KB	-rw-rw-r--
random-private.h	2.16 KB	-rw-rw-r--
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Code Editor : random.c

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                 RRRR    AAA   N   N  DDDD    OOO   M   M                    %
%                 R   R  A   A  NN  N  D   D  O   O  MM MM                    %
%                 RRRR   AAAAA  N N N  D   D  O   O  M M M                    %
%                 R R    A   A  N  NN  D   D  O   O  M   M                    %
%                 R  R   A   A  N   N  DDDD    OOO   M   M                    %
%                                                                             %
%                                                                             %
%               MagickCore Methods to Generate Random Numbers                 %
%                                                                             %
%                             Software Design                                 %
%                                  Cristy                                     %
%                              December 2001                                  %
%                                                                             %
%                                                                             %
%  Copyright 1999-2020 ImageMagick Studio LLC, a non-profit organization      %
%  dedicated to making software imaging solutions freely available.           %
%                                                                             %
%  You may not use this file except in compliance with the License.  You may  %
%  obtain a copy of the License at                                            %
%                                                                             %
%    https://imagemagick.org/script/license.php                               %
%                                                                             %
%  Unless required by applicable law or agreed to in writing, software        %
%  distributed under the License is distributed on an "AS IS" BASIS,          %
%  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   %
%  See the License for the specific language governing permissions and        %
%  limitations under the License.                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  The generation of random numbers is too important to be left to chance.
%                               -- Tom Christiansen <tchrist@mox.perl.com>
%
%
*/

/*
  Include declarations.
*/
#if defined(__VMS)
#include <time.h>
#endif
#if defined(__MINGW32__)
#include <sys/time.h>
#endif
#include "MagickCore/studio.h"
#include "MagickCore/exception.h"
#include "MagickCore/exception-private.h"
#include "MagickCore/image-private.h"
#include "MagickCore/memory_.h"
#include "MagickCore/memory-private.h"
#include "MagickCore/random_.h"
#include "MagickCore/random-private.h"
#include "MagickCore/resource_.h"
#include "MagickCore/semaphore.h"
#include "MagickCore/signature-private.h"
#include "MagickCore/string_.h"
#include "MagickCore/thread_.h"
#include "MagickCore/thread-private.h"
#include "MagickCore/utility.h"
#include "MagickCore/utility-private.h"
/*
  Define declarations.
*/
#define PseudoRandomHash  SHA256Hash
#define RandomEntropyLevel  9
#define RandomFilename  "reservoir.xdm"
#define RandomFiletype  "random"
#define RandomProtocolMajorVersion  1
#define RandomProtocolMinorVersion  0

/*
  Typedef declarations.
*/
struct _RandomInfo
{
  SignatureInfo
    *signature_info;

StringInfo
    *nonce,
    *reservoir;

size_t
    i;

MagickSizeType
    seed[4];

double
    normalize;

unsigned long
    secret_key;

unsigned short
    protocol_major,
    protocol_minor;

SemaphoreInfo
    *semaphore;

ssize_t
    timestamp;

size_t
    signature;
};

/*
  External declarations.
*/
#if defined(__APPLE__) && !defined(TARGET_OS_IPHONE)
#include <crt_externs.h>
#define environ (*_NSGetEnviron())
#endif

#if !defined(MAGICKCORE_WINDOWS_SUPPORT)
extern char
  **environ;
#endif

/*
  Global declarations.
*/
static SemaphoreInfo
  *random_semaphore = (SemaphoreInfo *) NULL;

static unsigned long
  secret_key = ~0UL;

static MagickBooleanType
  gather_true_random = MagickFalse;

/*
  Forward declarations.
*/
static StringInfo
  *GenerateEntropicChaos(RandomInfo *);

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   A c q u i r e R a n d o m I n f o                                         %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  AcquireRandomInfo() allocates the RandomInfo structure.
%
%  The format of the AcquireRandomInfo method is:
%
%      RandomInfo *AcquireRandomInfo(void)
%
*/
MagickExport RandomInfo *AcquireRandomInfo(void)
{
  const StringInfo
    *digest;

RandomInfo
    *random_info;

StringInfo
    *entropy,
    *key,
    *nonce;

random_info=(RandomInfo *) AcquireCriticalMemory(sizeof(*random_info));
  (void) memset(random_info,0,sizeof(*random_info));
  random_info->signature_info=AcquireSignatureInfo();
  random_info->nonce=AcquireStringInfo(2*GetSignatureDigestsize(
    random_info->signature_info));
  ResetStringInfo(random_info->nonce);
  random_info->reservoir=AcquireStringInfo(GetSignatureDigestsize(
    random_info->signature_info));
  ResetStringInfo(random_info->reservoir);
  random_info->normalize=(double) (1.0/(MagickULLConstant(~0) >> 11));
  random_info->seed[0]=MagickULLConstant(0x76e15d3efefdcbbf);
  random_info->seed[1]=MagickULLConstant(0xc5004e441c522fb3);
  random_info->seed[2]=MagickULLConstant(0x77710069854ee241);
  random_info->seed[3]=MagickULLConstant(0x39109bb02acbe635);
  random_info->secret_key=secret_key;
  random_info->protocol_major=RandomProtocolMajorVersion;
  random_info->protocol_minor=RandomProtocolMinorVersion;
  random_info->semaphore=AcquireSemaphoreInfo();
  random_info->timestamp=(ssize_t) time(0);
  random_info->signature=MagickCoreSignature;
  /*
    Seed random nonce.
  */
  nonce=GenerateEntropicChaos(random_info);
  if (nonce == (StringInfo *) NULL)
    ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
  InitializeSignature(random_info->signature_info);
  UpdateSignature(random_info->signature_info,nonce);
  FinalizeSignature(random_info->signature_info);
  SetStringInfoLength(nonce,(GetSignatureDigestsize(
    random_info->signature_info)+1)/2);
  SetStringInfo(nonce,GetSignatureDigest(random_info->signature_info));
  SetStringInfo(random_info->nonce,nonce);
  nonce=DestroyStringInfo(nonce);
  /*
    Seed random reservoir with entropic data.
  */
  entropy=GenerateEntropicChaos(random_info);
  if (entropy == (StringInfo *) NULL)
    ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
  UpdateSignature(random_info->signature_info,entropy);
  FinalizeSignature(random_info->signature_info);
  SetStringInfo(random_info->reservoir,GetSignatureDigest(
    random_info->signature_info));
  entropy=DestroyStringInfo(entropy);
  /*
    Seed pseudo random number generator.
  */
  if (random_info->secret_key == ~0UL)
    {
      key=GetRandomKey(random_info,sizeof(random_info->seed));
      (void) memcpy(random_info->seed,GetStringInfoDatum(key),
        sizeof(random_info->seed));
      key=DestroyStringInfo(key);
    }
  else
    {
      SignatureInfo
        *signature_info;

signature_info=AcquireSignatureInfo();
      key=AcquireStringInfo(sizeof(random_info->secret_key));
      SetStringInfoDatum(key,(unsigned char *) &random_info->secret_key);
      UpdateSignature(signature_info,key);
      key=DestroyStringInfo(key);
      FinalizeSignature(signature_info);
      digest=GetSignatureDigest(signature_info);
      (void) memcpy(random_info->seed,GetStringInfoDatum(digest),
        MagickMin((size_t) GetSignatureDigestsize(signature_info),
        sizeof(random_info->seed)));
      signature_info=DestroySignatureInfo(signature_info);
    }
  return(random_info);
}

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
+   D e s t r o y R a n d o m I n f o                                         %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  DestroyRandomInfo() deallocates memory associated with the random
%  reservoir.
%
%  The format of the DestroyRandomInfo method is:
%
%      RandomInfo *DestroyRandomInfo(RandomInfo *random_info)
%
%  A description of each parameter follows:
%
%    o random_info: the random info.
%
*/
MagickExport RandomInfo *DestroyRandomInfo(RandomInfo *random_info)
{
  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
  assert(random_info != (RandomInfo *) NULL);
  assert(random_info->signature == MagickCoreSignature);
  LockSemaphoreInfo(random_info->semaphore);
  if (random_info->reservoir != (StringInfo *) NULL)
    random_info->reservoir=DestroyStringInfo(random_info->reservoir);
  if (random_info->nonce != (StringInfo *) NULL)
    random_info->nonce=DestroyStringInfo(random_info->nonce);
  if (random_info->signature_info != (SignatureInfo *) NULL)
    random_info->signature_info=DestroySignatureInfo(
      random_info->signature_info);
  (void) memset(random_info->seed,0,sizeof(random_info->seed));
  random_info->signature=(~MagickCoreSignature);
  UnlockSemaphoreInfo(random_info->semaphore);
  RelinquishSemaphoreInfo(&random_info->semaphore);
  random_info=(RandomInfo *) RelinquishMagickMemory(random_info);
  return(random_info);
}

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
+   G e n e r a t e E n t r o p i c C h a o s                                 %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  GenerateEntropicChaos() generate entropic chaos used to initialize the
%  random reservoir.
%
%  The format of the GenerateEntropicChaos method is:
%
%      StringInfo *GenerateEntropicChaos(RandomInfo *random_info)
%
%  A description of each parameter follows:
%
%    o random_info: the random info.
%
*/

#if !defined(MAGICKCORE_WINDOWS_SUPPORT)
static ssize_t ReadRandom(int file,unsigned char *source,size_t length)
{
  register unsigned char
    *q;

ssize_t
    offset,
    count;

offset=0;
  for (q=source; length != 0; length-=count)
  {
    count=(ssize_t) read(file,q,length);
    if (count <= 0)
      {
        count=0;
        if (errno == EINTR)
          continue;
        return(-1);
      }
    q+=count;
    offset+=count;
  }
  return(offset);
}
#endif

static StringInfo *GenerateEntropicChaos(RandomInfo *random_info)
{
#define MaxEntropyExtent  64

MagickThreadType
    tid;

StringInfo
    *chaos,
    *entropy;

size_t
    nanoseconds,
    seconds;

ssize_t
    pid;

/*
    Initialize random reservoir.
  */
  entropy=AcquireStringInfo(0);
  LockSemaphoreInfo(random_info->semaphore);
  chaos=AcquireStringInfo(sizeof(unsigned char *));
  SetStringInfoDatum(chaos,(unsigned char *) &entropy);
  ConcatenateStringInfo(entropy,chaos);
  SetStringInfoDatum(chaos,(unsigned char *) entropy);
  ConcatenateStringInfo(entropy,chaos);
  pid=(ssize_t) getpid();
  SetStringInfoLength(chaos,sizeof(pid));
  SetStringInfoDatum(chaos,(unsigned char *) &pid);
  ConcatenateStringInfo(entropy,chaos);
  tid=GetMagickThreadId();
  SetStringInfoLength(chaos,sizeof(tid));
  SetStringInfoDatum(chaos,(unsigned char *) &tid);
  ConcatenateStringInfo(entropy,chaos);
#if defined(MAGICKCORE_HAVE_SYSCONF) && defined(_SC_PHYS_PAGES)
  {
    ssize_t
      pages;

pages=(ssize_t) sysconf(_SC_PHYS_PAGES);
    SetStringInfoLength(chaos,sizeof(pages));
    SetStringInfoDatum(chaos,(unsigned char *) &pages);
    ConcatenateStringInfo(entropy,chaos);
  }
#endif
#if defined(MAGICKCORE_HAVE_GETRUSAGE) && defined(RUSAGE_SELF)
  {
    struct rusage
      usage;

if (getrusage(RUSAGE_SELF,&usage) == 0)
      {
        SetStringInfoLength(chaos,sizeof(usage));
        SetStringInfoDatum(chaos,(unsigned char *) &usage);
      }
  }
#endif
  seconds=time((time_t *) 0);
  nanoseconds=0;
#if defined(MAGICKCORE_HAVE_GETTIMEOFDAY)
  {
    struct timeval
      timer;

if (gettimeofday(&timer,(struct timezone *) NULL) == 0)
      {
        seconds=(size_t) timer.tv_sec;
        nanoseconds=(size_t) (1000UL*timer.tv_usec);
      }
  }
#endif
#if defined(MAGICKCORE_HAVE_CLOCK_GETTIME) && defined(CLOCK_REALTIME_HR)
  {
    struct timespec
      timer;

if (clock_gettime(CLOCK_REALTIME_HR,&timer) == 0)
      {
        seconds=timer.tv_sec;
        nanoseconds=timer.tv_nsec;
      }
  }
#endif
  SetStringInfoLength(chaos,sizeof(seconds));
  SetStringInfoDatum(chaos,(unsigned char *) &seconds);
  ConcatenateStringInfo(entropy,chaos);
  SetStringInfoLength(chaos,sizeof(nanoseconds));
  SetStringInfoDatum(chaos,(unsigned char *) &nanoseconds);
  ConcatenateStringInfo(entropy,chaos);
  nanoseconds=0;
#if defined(MAGICKCORE_HAVE_CLOCK)
  nanoseconds=clock();
#endif
#if defined(MAGICKCORE_HAVE_TIMES)
  {
    struct tms
      timer;

(void) times(&timer);
    nanoseconds=timer.tms_utime+timer.tms_stime;
  }
#endif
  SetStringInfoLength(chaos,sizeof(nanoseconds));
  SetStringInfoDatum(chaos,(unsigned char *) &nanoseconds);
  ConcatenateStringInfo(entropy,chaos);
#if defined(MAGICKCORE_HAVE_MKSTEMP)
  {
    char
      path[MagickPathExtent];

int
      file;

(void) strcpy(path,"XXXXXX");
    file=mkstemp(path);
    if (file != -1)
      {
#if defined(MAGICKCORE_HAVE_FCHMOD)
        (void) fchmod(file,0600);
#endif
#if defined(__OS2__)
        setmode(file,O_BINARY);
#endif
        (void) close(file);
      }
    (void) remove_utf8(path);
    SetStringInfoLength(chaos,strlen(path));
    SetStringInfoDatum(chaos,(unsigned char *) path);
    ConcatenateStringInfo(entropy,chaos);
  }
#endif
#if defined(MAGICKCORE_WINDOWS_SUPPORT)
  {
    double
      seconds;

LARGE_INTEGER
      nanoseconds;

/*
      Not crytographically strong but better than nothing.
    */
    seconds=NTElapsedTime()+NTUserTime();
    SetStringInfoLength(chaos,sizeof(seconds));
    SetStringInfoDatum(chaos,(unsigned char *) &seconds);
    ConcatenateStringInfo(entropy,chaos);
    if (QueryPerformanceCounter(&nanoseconds) != 0)
      {
        SetStringInfoLength(chaos,sizeof(nanoseconds));
        SetStringInfoDatum(chaos,(unsigned char *) &nanoseconds);
        ConcatenateStringInfo(entropy,chaos);
      }
    /*
      Our best hope for true entropy.
    */
    SetStringInfoLength(chaos,MaxEntropyExtent);
    (void) NTGatherRandomData(MaxEntropyExtent,GetStringInfoDatum(chaos));
    ConcatenateStringInfo(entropy,chaos);
  }
#else
  {
    char
      *filename;

int
      file;

ssize_t
      count;

StringInfo
      *device;

/*
      Not crytographically strong but better than nothing.
    */
    if (environ != (char **) NULL)
      {
        register ssize_t
          i;

/*
          Squeeze some entropy from the sometimes unpredicatble environment.
        */
        for (i=0; environ[i] != (char *) NULL; i++)
        {
          SetStringInfoLength(chaos,strlen(environ[i]));
          SetStringInfoDatum(chaos,(unsigned char *) environ[i]);
          ConcatenateStringInfo(entropy,chaos);
        }
      }
    filename=AcquireString("/dev/urandom");
    device=StringToStringInfo(filename);
    device=DestroyStringInfo(device);
    file=open_utf8(filename,O_RDONLY | O_BINARY,0);
    filename=DestroyString(filename);
    if (file != -1)
      {
        SetStringInfoLength(chaos,MaxEntropyExtent);
        count=ReadRandom(file,GetStringInfoDatum(chaos),MaxEntropyExtent);
        (void) close(file);
        SetStringInfoLength(chaos,(size_t) count);
        ConcatenateStringInfo(entropy,chaos);
      }
    if (gather_true_random != MagickFalse)
      {
        /*
          Our best hope for true entropy.
        */
        filename=AcquireString("/dev/random");
        device=StringToStringInfo(filename);
        device=DestroyStringInfo(device);
        file=open_utf8(filename,O_RDONLY | O_BINARY,0);
        filename=DestroyString(filename);
        if (file == -1)
          {
            filename=AcquireString("/dev/srandom");
            device=StringToStringInfo(filename);
            device=DestroyStringInfo(device);
            file=open_utf8(filename,O_RDONLY | O_BINARY,0);
          }
        if (file != -1)
          {
            SetStringInfoLength(chaos,MaxEntropyExtent);
            count=ReadRandom(file,GetStringInfoDatum(chaos),MaxEntropyExtent);
            (void) close(file);
            SetStringInfoLength(chaos,(size_t) count);
            ConcatenateStringInfo(entropy,chaos);
          }
      }
  }
#endif
  chaos=DestroyStringInfo(chaos);
  UnlockSemaphoreInfo(random_info->semaphore);
  return(entropy);
}

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   G e t P s e u d o R a n d o m V a l u e                                   %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  GetPseudoRandomValue() is a Xoshiro generator that returns a non-negative
%  double-precision floating-point value uniformly distributed over the
%  interval [0.0, 1.0) with a 2 to the 256th-1 period.
%
%  The format of the GetPseudoRandomValue method is:
%
%      double GetPseudoRandomValue(RandomInfo *randon_info)
%
%  A description of each parameter follows:
%
%    o random_info: the random info.
%
*/
MagickExport double GetPseudoRandomValue(
  RandomInfo *magick_restrict random_info)
{
#define RandomROTL(x,k) (((x) << (k)) | ((x) >> (64-(k))))

const MagickSizeType
    alpha = (random_info->seed[1] << 17),
    value = (random_info->seed[0]+random_info->seed[3]);

random_info->seed[2]^=random_info->seed[0];
  random_info->seed[3]^=random_info->seed[1];
  random_info->seed[1]^=random_info->seed[2];
  random_info->seed[0]^=random_info->seed[3];
  random_info->seed[2]^=alpha;
  random_info->seed[3]=RandomROTL(random_info->seed[3],45);
  return((double) ((value >> 11)*random_info->normalize));
}

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
+   G e t R a n d o m I n f o N o r m a l i z e                               %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  GetRandomInfoNormalize() returns the random normalize value.
%
%  The format of the GetRandomInfoNormalize method is:
%
%      double GetRandomInfoNormalize(const RandomInfo *random_info)
%
%  A description of each parameter follows:
%
%    o random_info: the random info.
%
*/
MagickPrivate double GetRandomInfoNormalize(const RandomInfo *random_info)
{
  assert(random_info != (const RandomInfo *) NULL);
  return(random_info->normalize);
}

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
+   G e t R a n d o m I n f o S e e d                                         %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  GetRandomInfoSeed() returns the random seed.
%
%  The format of the GetRandomInfoSeed method is:
%
%      unsigned long *GetRandomInfoSeed(RandomInfo *random_info)
%
%  A description of each parameter follows:
%
%    o random_info: the random info.
%
*/
MagickPrivate unsigned long *GetRandomInfoSeed(RandomInfo *random_info)
{
  assert(random_info != (RandomInfo *) NULL);
  return((unsigned long *) random_info->seed);
}

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   G e t R a n d o m K e y                                                   %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  GetRandomKey() gets a random key from the reservoir.
%
%  The format of the GetRandomKey method is:
%
%      StringInfo *GetRandomKey(RandomInfo *random_info,const size_t length)
%
%  A description of each parameter follows:
%
%    o random_info: the random info.
%
%    o length: the key length.
%
*/
MagickExport StringInfo *GetRandomKey(RandomInfo *random_info,
  const size_t length)
{
  StringInfo
    *key;

assert(random_info != (RandomInfo *) NULL);
  key=AcquireStringInfo(length);
  SetRandomKey(random_info,length,GetStringInfoDatum(key));
  return(key);
}

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   G e t R a n d o m S e c r e t K e y                                       %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  GetRandomSecretKey() returns the random secet key.
%
%  The format of the GetRandomSecretKey method is:
%
%      unsigned long GetRandomSecretKey(const RandomInfo *random_info)
%
%  A description of each parameter follows:
%
%    o random_info: the random info.
*/
MagickExport unsigned long GetRandomSecretKey(const RandomInfo *random_info)
{
  return(random_info->secret_key);
}

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   G e t R a n d o m V a l u e                                               %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  GetRandomValue() return a non-negative double-precision floating-point
%  value uniformly distributed over the interval [0.0, 1.0) with a 2 to the
%  128th-1 period (not cryptographically strong).
%
%  The format of the GetRandomValue method is:
%
%      double GetRandomValue(void)
%
*/
MagickExport double GetRandomValue(RandomInfo *random_info)
{
  unsigned long
    key,
    range;

range=(~0UL);
  do
  {
    SetRandomKey(random_info,sizeof(key),(unsigned char *) &key);
  } while (key == range);
  return((double) key/range);
}

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
+   R a n d o m C o m p o n e n t G e n e s i s                               %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  RandomComponentGenesis() instantiates the random component.
%
%  The format of the RandomComponentGenesis method is:
%
%      MagickBooleanType RandomComponentGenesis(void)
%
*/
MagickPrivate MagickBooleanType RandomComponentGenesis(void)
{
  if (random_semaphore == (SemaphoreInfo *) NULL)
    random_semaphore=AcquireSemaphoreInfo();
  return(MagickTrue);
}

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
+   R a n d o m C o m p o n e n t T e r m i n u s                             %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  RandomComponentTerminus() destroys the random component.
%
%  The format of the RandomComponentTerminus method is:
%
%      RandomComponentTerminus(void)
%
*/
MagickPrivate void RandomComponentTerminus(void)
{
  if (random_semaphore == (SemaphoreInfo *) NULL)
    ActivateSemaphoreInfo(&random_semaphore);
  RelinquishSemaphoreInfo(&random_semaphore);
}

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   S e t R a n d o m K e y                                                   %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  SetRandomKey() sets a random key from the reservoir.
%
%  The format of the SetRandomKey method is:
%
%      void SetRandomKey(RandomInfo *random_info,const size_t length,
%        unsigned char *key)
%
%  A description of each parameter follows:
%
%    o random_info: the random info.
%
%    o length: the key length.
%
%    o key: the key.
%
*/

static inline void IncrementRandomNonce(StringInfo *nonce)
{
  register ssize_t
    i;

unsigned char
    *datum;

datum=GetStringInfoDatum(nonce);
  for (i=(ssize_t) (GetStringInfoLength(nonce)-1); i != 0; i--)
  {
    datum[i]++;
    if (datum[i] != 0)
      return;
  }
  ThrowFatalException(RandomFatalError,"SequenceWrapError");
}

MagickExport void SetRandomKey(RandomInfo *random_info,const size_t length,
  unsigned char *key)
{
  register size_t
    i;

SignatureInfo
    *signature_info;

unsigned char
    *datum;

assert(random_info != (RandomInfo *) NULL);
  if (length == 0)
    return;
  LockSemaphoreInfo(random_info->semaphore);
  signature_info=random_info->signature_info;
  datum=GetStringInfoDatum(random_info->reservoir);
  i=length;
  for (p=key; (i != 0) && (random_info->i != 0); i--)
  {
    *p++=datum[random_info->i];
    random_info->i++;
    if (random_info->i == GetSignatureDigestsize(signature_info))
      random_info->i=0;
  }
  while (i >= GetSignatureDigestsize(signature_info))
  {
    InitializeSignature(signature_info);
    UpdateSignature(signature_info,random_info->nonce);
    FinalizeSignature(signature_info);
    IncrementRandomNonce(random_info->nonce);
    (void) memcpy(p,GetStringInfoDatum(GetSignatureDigest(
      signature_info)),GetSignatureDigestsize(signature_info));
    p+=GetSignatureDigestsize(signature_info);
    i-=GetSignatureDigestsize(signature_info);
  }
  if (i != 0)
    {
      InitializeSignature(signature_info);
      UpdateSignature(signature_info,random_info->nonce);
      FinalizeSignature(signature_info);
      IncrementRandomNonce(random_info->nonce);
      SetStringInfo(random_info->reservoir,GetSignatureDigest(signature_info));
      random_info->i=i;
      datum=GetStringInfoDatum(random_info->reservoir);
      while (i-- != 0)
        p[i]=datum[i];
    }
  UnlockSemaphoreInfo(random_info->semaphore);
}

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   S e t R a n d o m S e c r e t K e y                                       %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  SetRandomSecretKey() sets the pseudo-random number generator secret key.
%
%  The format of the SetRandomSecretKey method is:
%
%      void SetRandomSecretKey(const unsigned long key)
%
%  A description of each parameter follows:
%
%    o key: the secret key.
%
*/
MagickExport void SetRandomSecretKey(const unsigned long key)
{
  secret_key=key;
}

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   S e t R a n d o m T r u e R a n d o m                                     %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  SetRandomTrueRandom() declares your intentions to use true random numbers.
%  True random numbers are encouraged but may not always be practical because
%  your application may block while entropy is gathered from your environment.
%
%  The format of the SetRandomTrueRandom method is:
%
%      void SetRandomTrueRandom(const MagickBooleanType true_random)
%
%  A description of each parameter follows:
%
%    o true_random: declare your intentions to use true-random number.
%
*/
MagickExport void SetRandomTrueRandom(const MagickBooleanType true_random)
{
  gather_true_random=true_random;
}

${this.title}

Code Editor : random.c