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Diffstat (limited to 'secure/lib/libcrypto/man/EVP_BytesToKey.3')
| -rw-r--r-- | secure/lib/libcrypto/man/EVP_BytesToKey.3 | 204 |
1 files changed, 0 insertions, 204 deletions
diff --git a/secure/lib/libcrypto/man/EVP_BytesToKey.3 b/secure/lib/libcrypto/man/EVP_BytesToKey.3 deleted file mode 100644 index 553e4f81c506..000000000000 --- a/secure/lib/libcrypto/man/EVP_BytesToKey.3 +++ /dev/null @@ -1,204 +0,0 @@ -.\" Automatically generated by Pod::Man version 1.15 -.\" Wed Feb 19 16:42:53 2003 -.\" -.\" Standard preamble: -.\" ====================================================================== -.de Sh \" Subsection heading -.br -.if t .Sp -.ne 5 -.PP -\fB\\$1\fR -.PP -.. -.de Sp \" Vertical space (when we can't use .PP) -.if t .sp .5v -.if n .sp -.. -.de Ip \" List item -.br -.ie \\n(.$>=3 .ne \\$3 -.el .ne 3 -.IP "\\$1" \\$2 -.. -.de Vb \" Begin verbatim text -.ft CW -.nf -.ne \\$1 -.. -.de Ve \" End verbatim text -.ft R - -.fi -.. -.\" Set up some character translations and predefined strings. \*(-- will -.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left -.\" double quote, and \*(R" will give a right double quote. | will give a -.\" real vertical bar. \*(C+ will give a nicer C++. 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No user-serviceable parts. -.bd B 3 -. \" fudge factors for nroff and troff -.if n \{\ -. ds #H 0 -. ds #V .8m -. ds #F .3m -. ds #[ \f1 -. ds #] \fP -.\} -.if t \{\ -. ds #H ((1u-(\\\\n(.fu%2u))*.13m) -. ds #V .6m -. ds #F 0 -. ds #[ \& -. ds #] \& -.\} -. \" simple accents for nroff and troff -.if n \{\ -. ds ' \& -. ds ` \& -. ds ^ \& -. ds , \& -. ds ~ ~ -. ds / -.\} -.if t \{\ -. ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u" -. ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u' -. ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u' -. ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u' -. ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u' -. ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u' -.\} -. \" troff and (daisy-wheel) nroff accents -.ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V' -.ds 8 \h'\*(#H'\(*b\h'-\*(#H' -.ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#] -.ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H' -.ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u' -.ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#] -.ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#] -.ds ae a\h'-(\w'a'u*4/10)'e -.ds Ae A\h'-(\w'A'u*4/10)'E -. \" corrections for vroff -.if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u' -.if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u' -. \" for low resolution devices (crt and lpr) -.if \n(.H>23 .if \n(.V>19 \ -\{\ -. ds : e -. ds 8 ss -. ds o a -. ds d- d\h'-1'\(ga -. ds D- D\h'-1'\(hy -. ds th \o'bp' -. ds Th \o'LP' -. ds ae ae -. ds Ae AE -.\} -.rm #[ #] #H #V #F C -.\" ====================================================================== -.\" -.IX Title "EVP_BytesToKey 3" -.TH EVP_BytesToKey 3 "0.9.7a" "2003-02-19" "OpenSSL" -.UC -.SH "NAME" -.Vb 1 -\& EVP_BytesToKey - password based encryption routine -.Ve -.SH "SYNOPSIS" -.IX Header "SYNOPSIS" -.Vb 1 -\& #include <openssl/evp.h> -.Ve -.Vb 4 -\& int EVP_BytesToKey(const EVP_CIPHER *type,const EVP_MD *md, -\& const unsigned char *salt, -\& const unsigned char *data, int datal, int count, -\& unsigned char *key,unsigned char *iv); -.Ve -.SH "DESCRIPTION" -.IX Header "DESCRIPTION" -\&\fIEVP_BytesToKey()\fR derives a key and \s-1IV\s0 from various parameters. \fBtype\fR is -the cipher to derive the key and \s-1IV\s0 for. \fBmd\fR is the message digest to use. -The \fBsalt\fR paramter is used as a salt in the derivation: it should point to -an 8 byte buffer or \s-1NULL\s0 if no salt is used. \fBdata\fR is a buffer containing -\&\fBdatal\fR bytes which is used to derive the keying data. \fBcount\fR is the -iteration count to use. The derived key and \s-1IV\s0 will be written to \fBkey\fR -and \fBiv\fR respectively. -.SH "NOTES" -.IX Header "NOTES" -A typical application of this function is to derive keying material for an -encryption algorithm from a password in the \fBdata\fR parameter. -.PP -Increasing the \fBcount\fR parameter slows down the algorithm which makes it -harder for an attacker to peform a brute force attack using a large number -of candidate passwords. -.PP -If the total key and \s-1IV\s0 length is less than the digest length and -\&\fB\s-1MD5\s0\fR is used then the derivation algorithm is compatible with PKCS#5 v1.5 -otherwise a non standard extension is used to derive the extra data. -.PP -Newer applications should use more standard algorithms such as PKCS#5 -v2.0 for key derivation. -.SH "KEY DERIVATION ALGORITHM" -.IX Header "KEY DERIVATION ALGORITHM" -The key and \s-1IV\s0 is derived by concatenating D_1, D_2, etc until -enough data is available for the key and \s-1IV\s0. D_i is defined as: -.PP -.Vb 1 -\& D_i = HASH^count(D_(i-1) || data || salt) -.Ve -where || denotes concatentaion, D_0 is empty, \s-1HASH\s0 is the digest -algorithm in use, HASH^1(data) is simply HASH(data), HASH^2(data) -is HASH(HASH(data)) and so on. -.PP -The initial bytes are used for the key and the subsequent bytes for -the \s-1IV\s0. -.SH "RETURN VALUES" -.IX Header "RETURN VALUES" -\&\fIEVP_BytesToKey()\fR returns the size of the derived key in bytes. -.SH "SEE ALSO" -.IX Header "SEE ALSO" -evp(3), rand(3), -EVP_EncryptInit(3), -.SH "HISTORY" -.IX Header "HISTORY" |