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Diffstat (limited to 'secure/lib/libcrypto/man/man7/scrypt.7')
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diff --git a/secure/lib/libcrypto/man/man7/scrypt.7 b/secure/lib/libcrypto/man/man7/scrypt.7 deleted file mode 100644 index 08089461653e..000000000000 --- a/secure/lib/libcrypto/man/man7/scrypt.7 +++ /dev/null @@ -1,248 +0,0 @@ -.\" Automatically generated by Pod::Man 4.14 (Pod::Simple 3.40) -.\" -.\" Standard preamble: -.\" ======================================================================== -.de Sp \" Vertical space (when we can't use .PP) -.if t .sp .5v -.if n .sp -.. -.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. \*(C+ will -.\" give a nicer C++. Capital omega is used to do unbreakable dashes and -.\" therefore won't be available. \*(C` and \*(C' expand to `' in nroff, -.\" nothing in troff, for use with C<>. -.tr \(*W- -.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p' -.ie n \{\ -. ds -- \(*W- -. ds PI pi -. if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch -. if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch -. ds L" "" -. ds R" "" -. ds C` "" -. ds C' "" -'br\} -.el\{\ -. ds -- \|\(em\| -. ds PI \(*p -. ds L" `` -. ds R" '' -. ds C` -. ds C' -'br\} -.\" -.\" Escape single quotes in literal strings from groff's Unicode transform. -.ie \n(.g .ds Aq \(aq -.el .ds Aq ' -.\" -.\" If the F register is >0, we'll generate index entries on stderr for -.\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index -.\" entries marked with X<> in POD. Of course, you'll have to process the -.\" output yourself in some meaningful fashion. -.\" -.\" Avoid warning from groff about undefined register 'F'. -.de IX -.. -.nr rF 0 -.if \n(.g .if rF .nr rF 1 -.if (\n(rF:(\n(.g==0)) \{\ -. if \nF \{\ -. de IX -. tm Index:\\$1\t\\n%\t"\\$2" -.. -. if !\nF==2 \{\ -. nr % 0 -. nr F 2 -. \} -. \} -.\} -.rr rF -.\" -.\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2). -.\" Fear. Run. Save yourself. No user-serviceable parts. -. \" 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 "SCRYPT 7" -.TH SCRYPT 7 "2022-06-21" "1.1.1p" "OpenSSL" -.\" For nroff, turn off justification. Always turn off hyphenation; it makes -.\" way too many mistakes in technical documents. -.if n .ad l -.nh -.SH "NAME" -scrypt \- EVP_PKEY scrypt KDF support -.SH "DESCRIPTION" -.IX Header "DESCRIPTION" -The \s-1EVP_PKEY_SCRYPT\s0 algorithm implements the scrypt password based key -derivation function, as described in \s-1RFC 7914.\s0 It is memory-hard in the sense -that it deliberately requires a significant amount of \s-1RAM\s0 for efficient -computation. The intention of this is to render brute forcing of passwords on -systems that lack large amounts of main memory (such as GPUs or ASICs) -computationally infeasible. -.PP -scrypt provides three work factors that can be customized: N, r and p. N, which -has to be a positive power of two, is the general work factor and scales \s-1CPU\s0 -time in an approximately linear fashion. r is the block size of the internally -used hash function and p is the parallelization factor. Both r and p need to be -greater than zero. The amount of \s-1RAM\s0 that scrypt requires for its computation -is roughly (128 * N * r * p) bytes. -.PP -In the original paper of Colin Percival (\*(L"Stronger Key Derivation via -Sequential Memory-Hard Functions\*(R", 2009), the suggested values that give a -computation time of less than 5 seconds on a 2.5 GHz Intel Core 2 Duo are N = -2^20 = 1048576, r = 8, p = 1. Consequently, the required amount of memory for -this computation is roughly 1 GiB. On a more recent \s-1CPU\s0 (Intel i7\-5930K at 3.5 -GHz), this computation takes about 3 seconds. When N, r or p are not specified, -they default to 1048576, 8, and 1, respectively. The default amount of \s-1RAM\s0 that -may be used by scrypt defaults to 1025 MiB. -.SH "NOTES" -.IX Header "NOTES" -A context for scrypt can be obtained by calling: -.PP -.Vb 1 -\& EVP_PKEY_CTX *pctx = EVP_PKEY_CTX_new_id(EVP_PKEY_SCRYPT, NULL); -.Ve -.PP -The output length of an scrypt key derivation is specified via the -length parameter to the \fBEVP_PKEY_derive\fR\|(3) function. -.SH "EXAMPLES" -.IX Header "EXAMPLES" -This example derives a 64\-byte long test vector using scrypt using the password -\&\*(L"password\*(R", salt \*(L"NaCl\*(R" and N = 1024, r = 8, p = 16. -.PP -.Vb 2 -\& EVP_PKEY_CTX *pctx; -\& unsigned char out[64]; -\& -\& size_t outlen = sizeof(out); -\& pctx = EVP_PKEY_CTX_new_id(EVP_PKEY_SCRYPT, NULL); -\& -\& if (EVP_PKEY_derive_init(pctx) <= 0) { -\& error("EVP_PKEY_derive_init"); -\& } -\& if (EVP_PKEY_CTX_set1_pbe_pass(pctx, "password", 8) <= 0) { -\& error("EVP_PKEY_CTX_set1_pbe_pass"); -\& } -\& if (EVP_PKEY_CTX_set1_scrypt_salt(pctx, "NaCl", 4) <= 0) { -\& error("EVP_PKEY_CTX_set1_scrypt_salt"); -\& } -\& if (EVP_PKEY_CTX_set_scrypt_N(pctx, 1024) <= 0) { -\& error("EVP_PKEY_CTX_set_scrypt_N"); -\& } -\& if (EVP_PKEY_CTX_set_scrypt_r(pctx, 8) <= 0) { -\& error("EVP_PKEY_CTX_set_scrypt_r"); -\& } -\& if (EVP_PKEY_CTX_set_scrypt_p(pctx, 16) <= 0) { -\& error("EVP_PKEY_CTX_set_scrypt_p"); -\& } -\& if (EVP_PKEY_derive(pctx, out, &outlen) <= 0) { -\& error("EVP_PKEY_derive"); -\& } -\& -\& { -\& const unsigned char expected[sizeof(out)] = { -\& 0xfd, 0xba, 0xbe, 0x1c, 0x9d, 0x34, 0x72, 0x00, -\& 0x78, 0x56, 0xe7, 0x19, 0x0d, 0x01, 0xe9, 0xfe, -\& 0x7c, 0x6a, 0xd7, 0xcb, 0xc8, 0x23, 0x78, 0x30, -\& 0xe7, 0x73, 0x76, 0x63, 0x4b, 0x37, 0x31, 0x62, -\& 0x2e, 0xaf, 0x30, 0xd9, 0x2e, 0x22, 0xa3, 0x88, -\& 0x6f, 0xf1, 0x09, 0x27, 0x9d, 0x98, 0x30, 0xda, -\& 0xc7, 0x27, 0xaf, 0xb9, 0x4a, 0x83, 0xee, 0x6d, -\& 0x83, 0x60, 0xcb, 0xdf, 0xa2, 0xcc, 0x06, 0x40 -\& }; -\& -\& assert(!memcmp(out, expected, sizeof(out))); -\& } -\& -\& EVP_PKEY_CTX_free(pctx); -.Ve -.SH "CONFORMING TO" -.IX Header "CONFORMING TO" -\&\s-1RFC 7914\s0 -.SH "SEE ALSO" -.IX Header "SEE ALSO" -\&\fBEVP_PKEY_CTX_set1_scrypt_salt\fR\|(3), -\&\fBEVP_PKEY_CTX_set_scrypt_N\fR\|(3), -\&\fBEVP_PKEY_CTX_set_scrypt_r\fR\|(3), -\&\fBEVP_PKEY_CTX_set_scrypt_p\fR\|(3), -\&\fBEVP_PKEY_CTX_set_scrypt_maxmem_bytes\fR\|(3), -\&\fBEVP_PKEY_CTX_new\fR\|(3), -\&\fBEVP_PKEY_CTX_ctrl_str\fR\|(3), -\&\fBEVP_PKEY_derive\fR\|(3) -.SH "COPYRIGHT" -.IX Header "COPYRIGHT" -Copyright 2017\-2019 The OpenSSL Project Authors. All Rights Reserved. -.PP -Licensed under the OpenSSL license (the \*(L"License\*(R"). You may not use -this file except in compliance with the License. You can obtain a copy -in the file \s-1LICENSE\s0 in the source distribution or at -<https://www.openssl.org/source/license.html>. |