Thu May 9 13:18:37 2002
Standard preamble:
======================================================================
\\$1
.. ..
.... 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++. 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-|\(bv\*(Tr . 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\} . ds -- \|\(em\| . ds PI \(*p . ds L" `` . ds R" '' 'br\}
If the F register is turned on, we'll generate index entries on stderr
for titles (.TH), headers (.SH), subsections (.Sh), items (.Ip), and
index entries marked with X<> in POD. Of course, you'll have to process
the output yourself in some meaningful fashion.
. de IX . tm Index:\\$1\t\\n%\t"\\$2" .. . nr % 0 . rr F .\}
For nroff, turn off justification. Always turn off hyphenation; it
makes way too many mistakes in technical documents.
Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2).
Fear. Run. Save yourself. No user-serviceable parts.
.bd B 3 . \" fudge factors for nroff and troff . ds #H 0 . ds #V .8m . ds #F .3m . ds #[ \f1 . ds #] .\} . ds #H ((1u-(\\\\n(.fu%2u))*.13m) . ds #V .6m . ds #F 0 . ds #[ \& . ds #] \& .\} . \" simple accents for nroff and troff . ds ' \& . ds ` \& . ds ^ \& . ds , \& . ds ~ ~ . ds / .\} . 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 . \" corrections for vroff . \" for low resolution devices (crt and lpr) \{\ . 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 .\} ======================================================================
Title "RSA_PUBLIC_ENCRYPT 1"
\fBpadding denotes one of the following modes: p "\s-1RSA_PKCS1_PADDING\s0" 4 Item "RSA_PKCS1_PADDING" \s-1PKCS\s0 #1 v1.5 padding. This currently is the most widely used mode. p "\s-1RSA_PKCS1_OAEP_PADDING\s0" 4 Item "RSA_PKCS1_OAEP_PADDING" \s-1EME-OAEP\s0 as defined in \s-1PKCS\s0 #1 v2.0 with \s-1SHA-1\s0, \s-1MGF1\s0 and an empty encoding parameter. This mode is recommended for all new applications. p "\s-1RSA_SSLV23_PADDING\s0" 4 Item "RSA_SSLV23_PADDING" \s-1PKCS\s0 #1 v1.5 padding with an SSL-specific modification that denotes that the server is \s-1SSL3\s0 capable. p "\s-1RSA_NO_PADDING\s0" 4 Item "RSA_NO_PADDING" Raw \s-1RSA\s0 encryption. This mode should only be used to implement cryptographically sound padding modes in the application code. Encrypting user data directly with \s-1RSA\s0 is insecure.
\fBflen must be less than RSA_size(rsa) - 11 for the \s-1PKCS\s0 #1 v1.5 based padding modes, and less than RSA_size(rsa) - 41 for \s-1RSA_PKCS1_OAEP_PADDING\s0. The random number generator must be seeded prior to calling RSA_public_encrypt().
\fIRSA_private_decrypt() decrypts the flen bytes at from using the private key rsa and stores the plaintext in to. to must point to a memory section large enough to hold the decrypted data (which is smaller than RSA_size(rsa)). padding is the padding mode that was used to encrypt the data.
On error, -1 is returned; the error codes can be obtained by ERR_get_error(3).