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diff --git a/man/man3/des.html b/man/man3/des.html deleted file mode 100644 index 0752e8c8..00000000 --- a/man/man3/des.html +++ /dev/null @@ -1,170 +0,0 @@ -<head> -<title>des(3) - Plan 9 from User Space</title> -<meta content="text/html; charset=utf-8" http-equiv=Content-Type> -</head> -<body bgcolor=#ffffff> -<table border=0 cellpadding=0 cellspacing=0 width=100%> -<tr height=10><td> -<tr><td width=20><td> -<tr><td width=20><td><b>DES(3)</b><td align=right><b>DES(3)</b> -<tr><td width=20><td colspan=2> - <br> -<p><font size=+1><b>NAME </b></font><br> - -<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - setupDESstate, des_key_setup, block_cipher, desCBCencrypt, desCBCdecrypt, - desECBencrypt, desECBdecrypt, des3CBCencrypt, des3CBCdecrypt, - des3ECBencrypt, des3ECBdecrypt, key_setup, des56to64, des64to56, - setupDES3state, triple_block_cipher, - single and triple digital - encryption standard - -</table> -<p><font size=+1><b>SYNOPSIS </b></font><br> - -<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - <tt><font size=+1>#include <u.h><br> - #include <libc.h><br> - #include <mp.h><br> - #include <libsec.h> - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>void des_key_setup(uchar key[8], ulong schedule[32]) - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>void block_cipher(ulong *schedule, uchar *data, int decrypting) - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>void setupDESstate(DESstate *s, uchar key[8], uchar *ivec) - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>void desCBCencrypt(uchar*, int, DESstate*) - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>void desCBCdecrypt(uchar*, int, DESstate*) - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>void desECBencrypt(uchar*, int, DESstate*) - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>void desECBdecrypt(uchar*, int, DESstate*) - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>void triple_block_cipher(ulong keys[3][32], uchar*, int) - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>void setupDES3state(DES3state *s, uchar key[3][8], uchar *ivec) - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>void des3CBCencrypt(uchar*, int, DES3state*) - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>void des3CBCdecrypt(uchar*, int, DES3state*) - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>void des3ECBencrypt(uchar*, int, DES3state*) - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>void des3ECBdecrypt(uchar*, int, DES3state*) - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>void key_setup(uchar[7], ulong[32]) - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>void des56to64(uchar *k56, uchar *k64) - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>void des64to56(uchar *k64, uchar *k56)<br> - </font></tt> -</table> -<p><font size=+1><b>DESCRIPTION </b></font><br> - -<table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - -<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - The Digital Encryption Standard (DES) is a shared key or symmetric - encryption using either a 56 bit key for single DES or three 56 - bit keys for triple des. The keys are encoded into 64 bits where - every eight bit is parity. - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - The basic DES function, <i>block_cipher</i>, works on a block of 8 bytes, - converting them in place. It takes a key schedule, a pointer to - the block, and a flag indicating encrypting (0) or decrypting - (1). The key schedule is created from the key using <i>des_key_setup</i>. - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - Since it is a bit awkward, <i>block_cipher</i> is rarely called directly. - Instead, one normally uses routines that encrypt larger buffers - of data and which may chain the encryption state from one buffer - to the next. These routines keep track of the state of the encryption - using a <tt><font size=+1>DESstate</font></tt> structure that contains the key - schedule and any chained state. <i>SetupDESstate</i> sets up the <tt><font size=+1>DESstate</font></tt> - structure using the key and an 8 byte initialization vector. - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - Electronic code book, using <i>desECBencrypt</i> and <i>desECBdecrypt</i>, is - the less secure mode. The encryption of each 8 bytes does not - depend on the encryption of any other. Hence the encryption is - a substitution cipher using 64 bit characters. - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - Cipher block chaining mode, using <i>desCBCencrypt</i> and <i>desCBCdecrypt</i>, - is more secure. Every block encrypted depends on the initialization - vector and all blocks encrypted before it. - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - For both CBC and ECB modes, a stream of data can be encrypted - as multiple buffers. However, all buffers except the last must - be a multiple of 8 bytes to ensure successful decryption of the - stream. - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - There are equivalent triple DES functions for each of the DES - functions. - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - In the past Plan 9 used a 56 bit or 7 byte format for DES keys. - To be compatible with the rest of the world, we’ve abandoned this - format. There are two functions: <i>des56to64</i> and <i>des64to56</i> to convert - back and forth between the two formats. Also a key schedule can - be set up from the 7 byte format using <i>key_setup</i>. - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - -</table> -<p><font size=+1><b>SOURCE </b></font><br> - -<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - <tt><font size=+1>/usr/local/plan9/src/libsec<br> - </font></tt> -</table> -<p><font size=+1><b>SEE ALSO </b></font><br> - -<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - <a href="../man3/mp.html"><i>mp</i>(3)</a>, <a href="../man3/aes.html"><i>aes</i>(3)</a>, <a href="../man3/blowfish.html"><i>blowfish</i>(3)</a>, <a href="../man3/dsa.html"><i>dsa</i>(3)</a>, <a href="../man3/elgamal.html"><i>elgamal</i>(3)</a>, <a href="../man3/rc4.html"><i>rc4</i>(3)</a>, <a href="../man3/rsa.html"><i>rsa</i>(3)</a>, - <a href="../man3/sechash.html"><i>sechash</i>(3)</a>, <a href="../man3/prime.html"><i>prime</i>(3)</a>, <a href="../man3/rand.html"><i>rand</i>(3)</a><br> - -</table> - -<td width=20> -<tr height=20><td> -</table> -<!-- TRAILER --> -<table border=0 cellpadding=0 cellspacing=0 width=100%> -<tr height=15><td width=10><td><td width=10> -<tr><td><td> -<center> -<a href="../../"><img src="../../dist/spaceglenda100.png" alt="Space Glenda" border=1></a> -</center> -</table> -<!-- TRAILER --> -</body></html> |