1.\" Automatically generated by Pod::Man 2.22 (Pod::Simple 3.07)
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124.\" ========================================================================
125.\"
126.IX Title "RSA_set_method 3"
127.TH RSA_set_method 3 "2010-11-16" "0.9.8p" "OpenSSL"
128.\" For nroff, turn off justification. Always turn off hyphenation; it makes
129.\" way too many mistakes in technical documents.
130.if n .ad l
131.nh
132.SH "NAME"
133RSA_set_default_method, RSA_get_default_method, RSA_set_method,
134RSA_get_method, RSA_PKCS1_SSLeay, RSA_null_method, RSA_flags,
135RSA_new_method \- select RSA method
136.SH "SYNOPSIS"
137.IX Header "SYNOPSIS"
138.Vb 1
139\& #include <openssl/rsa.h>
140\&
141\& void RSA_set_default_method(const RSA_METHOD *meth);
142\&
143\& RSA_METHOD *RSA_get_default_method(void);
144\&
145\& int RSA_set_method(RSA *rsa, const RSA_METHOD *meth);
146\&
147\& RSA_METHOD *RSA_get_method(const RSA *rsa);
148\&
149\& RSA_METHOD *RSA_PKCS1_SSLeay(void);
150\&
151\& RSA_METHOD *RSA_null_method(void);
152\&
153\& int RSA_flags(const RSA *rsa);
154\&
155\& RSA *RSA_new_method(RSA_METHOD *method);
156.Ve
157.SH "DESCRIPTION"
158.IX Header "DESCRIPTION"
159An \fB\s-1RSA_METHOD\s0\fR specifies the functions that OpenSSL uses for \s-1RSA\s0
160operations. By modifying the method, alternative implementations such as
161hardware accelerators may be used. \s-1IMPORTANT:\s0 See the \s-1NOTES\s0 section for
162important information about how these \s-1RSA\s0 \s-1API\s0 functions are affected by the
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204the default method is used.
205.SH "THE RSA_METHOD STRUCTURE"
206.IX Header "THE RSA_METHOD STRUCTURE"
207.Vb 4
208\& typedef struct rsa_meth_st
209\& {
210\& /* name of the implementation */
211\& const char *name;
212\&
213\& /* encrypt */
214\& int (*rsa_pub_enc)(int flen, unsigned char *from,
215\& unsigned char *to, RSA *rsa, int padding);
216\&
217\& /* verify arbitrary data */
218\& int (*rsa_pub_dec)(int flen, unsigned char *from,
219\& unsigned char *to, RSA *rsa, int padding);
220\&
221\& /* sign arbitrary data */
222\& int (*rsa_priv_enc)(int flen, unsigned char *from,
223\& unsigned char *to, RSA *rsa, int padding);
224\&
225\& /* decrypt */
226\& int (*rsa_priv_dec)(int flen, unsigned char *from,
227\& unsigned char *to, RSA *rsa, int padding);
228\&
229\& /* compute r0 = r0 ^ I mod rsa\->n (May be NULL for some
230\& implementations) */
231\& int (*rsa_mod_exp)(BIGNUM *r0, BIGNUM *I, RSA *rsa);
232\&
233\& /* compute r = a ^ p mod m (May be NULL for some implementations) */
234\& int (*bn_mod_exp)(BIGNUM *r, BIGNUM *a, const BIGNUM *p,
235\& const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
236\&
237\& /* called at RSA_new */
238\& int (*init)(RSA *rsa);
239\&
240\& /* called at RSA_free */
241\& int (*finish)(RSA *rsa);
242\&
243\& /* RSA_FLAG_EXT_PKEY \- rsa_mod_exp is called for private key
244\& * operations, even if p,q,dmp1,dmq1,iqmp
245\& * are NULL
246\& * RSA_FLAG_SIGN_VER \- enable rsa_sign and rsa_verify
247\& * RSA_METHOD_FLAG_NO_CHECK \- don\*(Aqt check pub/private match
248\& */
249\& int flags;
250\&
251\& char *app_data; /* ?? */
252\&
253\& /* sign. For backward compatibility, this is used only
254\& * if (flags & RSA_FLAG_SIGN_VER)
255\& */
256\& int (*rsa_sign)(int type, unsigned char *m, unsigned int m_len,
257\& unsigned char *sigret, unsigned int *siglen, RSA *rsa);
258\&
259\& /* verify. For backward compatibility, this is used only
260\& * if (flags & RSA_FLAG_SIGN_VER)
261\& */
262\& int (*rsa_verify)(int type, unsigned char *m, unsigned int m_len,
263\& unsigned char *sigbuf, unsigned int siglen, RSA *rsa);
264\&
265\& } RSA_METHOD;
266.Ve
267.SH "RETURN VALUES"
268.IX Header "RETURN VALUES"
269\&\fIRSA_PKCS1_SSLeay()\fR, \fIRSA_PKCS1_null_method()\fR, \fIRSA_get_default_method()\fR
270and \fIRSA_get_method()\fR return pointers to the respective RSA_METHODs.
271.PP
272\&\fIRSA_set_default_method()\fR returns no value.
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2.\"
3.\" Standard preamble:
4.\" ========================================================================
5.de Sp \" Vertical space (when we can't use .PP)
6.if t .sp .5v
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14.de Ve \" End verbatim text
15.ft R
16.fi
17..
18.\" Set up some character translations and predefined strings. \*(-- will
19.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left
20.\" double quote, and \*(R" will give a right double quote. \*(C+ will
21.\" give a nicer C++. Capital omega is used to do unbreakable dashes and
22.\" therefore won't be available. \*(C` and \*(C' expand to `' in nroff,
23.\" nothing in troff, for use with C<>.
24.tr \(*W-
25.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p'
26.ie n \{\
27. ds -- \(*W-
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30. if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch
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36.el\{\
37. ds -- \|\(em\|
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42.\"
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44.ie \n(.g .ds Aq \(aq
45.el .ds Aq '
46.\"
47.\" If the F register is turned on, we'll generate index entries on stderr for
48.\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
49.\" entries marked with X<> in POD. Of course, you'll have to process the
50.\" output yourself in some meaningful fashion.
51.ie \nF \{\
52. de IX
53. tm Index:\\$1\t\\n%\t"\\$2"
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55. nr % 0
56. rr F
57.\}
58.el \{\
59. de IX
60..
61.\}
62.\"
63.\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2).
64.\" Fear. Run. Save yourself. No user-serviceable parts.
65. \" fudge factors for nroff and troff
66.if n \{\
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69. ds #F .3m
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123.rm #[ #] #H #V #F C
124.\" ========================================================================
125.\"
126.IX Title "RSA_set_method 3"
127.TH RSA_set_method 3 "2010-11-16" "0.9.8p" "OpenSSL"
128.\" For nroff, turn off justification. Always turn off hyphenation; it makes
129.\" way too many mistakes in technical documents.
130.if n .ad l
131.nh
132.SH "NAME"
133RSA_set_default_method, RSA_get_default_method, RSA_set_method,
134RSA_get_method, RSA_PKCS1_SSLeay, RSA_null_method, RSA_flags,
135RSA_new_method \- select RSA method
136.SH "SYNOPSIS"
137.IX Header "SYNOPSIS"
138.Vb 1
139\& #include <openssl/rsa.h>
140\&
141\& void RSA_set_default_method(const RSA_METHOD *meth);
142\&
143\& RSA_METHOD *RSA_get_default_method(void);
144\&
145\& int RSA_set_method(RSA *rsa, const RSA_METHOD *meth);
146\&
147\& RSA_METHOD *RSA_get_method(const RSA *rsa);
148\&
149\& RSA_METHOD *RSA_PKCS1_SSLeay(void);
150\&
151\& RSA_METHOD *RSA_null_method(void);
152\&
153\& int RSA_flags(const RSA *rsa);
154\&
155\& RSA *RSA_new_method(RSA_METHOD *method);
156.Ve
157.SH "DESCRIPTION"
158.IX Header "DESCRIPTION"
159An \fB\s-1RSA_METHOD\s0\fR specifies the functions that OpenSSL uses for \s-1RSA\s0
160operations. By modifying the method, alternative implementations such as
161hardware accelerators may be used. \s-1IMPORTANT:\s0 See the \s-1NOTES\s0 section for
162important information about how these \s-1RSA\s0 \s-1API\s0 functions are affected by the
--- 41 unchanged lines hidden (view full) ---
204the default method is used.
205.SH "THE RSA_METHOD STRUCTURE"
206.IX Header "THE RSA_METHOD STRUCTURE"
207.Vb 4
208\& typedef struct rsa_meth_st
209\& {
210\& /* name of the implementation */
211\& const char *name;
212\&
213\& /* encrypt */
214\& int (*rsa_pub_enc)(int flen, unsigned char *from,
215\& unsigned char *to, RSA *rsa, int padding);
216\&
217\& /* verify arbitrary data */
218\& int (*rsa_pub_dec)(int flen, unsigned char *from,
219\& unsigned char *to, RSA *rsa, int padding);
220\&
221\& /* sign arbitrary data */
222\& int (*rsa_priv_enc)(int flen, unsigned char *from,
223\& unsigned char *to, RSA *rsa, int padding);
224\&
225\& /* decrypt */
226\& int (*rsa_priv_dec)(int flen, unsigned char *from,
227\& unsigned char *to, RSA *rsa, int padding);
228\&
229\& /* compute r0 = r0 ^ I mod rsa\->n (May be NULL for some
230\& implementations) */
231\& int (*rsa_mod_exp)(BIGNUM *r0, BIGNUM *I, RSA *rsa);
232\&
233\& /* compute r = a ^ p mod m (May be NULL for some implementations) */
234\& int (*bn_mod_exp)(BIGNUM *r, BIGNUM *a, const BIGNUM *p,
235\& const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
236\&
237\& /* called at RSA_new */
238\& int (*init)(RSA *rsa);
239\&
240\& /* called at RSA_free */
241\& int (*finish)(RSA *rsa);
242\&
243\& /* RSA_FLAG_EXT_PKEY \- rsa_mod_exp is called for private key
244\& * operations, even if p,q,dmp1,dmq1,iqmp
245\& * are NULL
246\& * RSA_FLAG_SIGN_VER \- enable rsa_sign and rsa_verify
247\& * RSA_METHOD_FLAG_NO_CHECK \- don\*(Aqt check pub/private match
248\& */
249\& int flags;
250\&
251\& char *app_data; /* ?? */
252\&
253\& /* sign. For backward compatibility, this is used only
254\& * if (flags & RSA_FLAG_SIGN_VER)
255\& */
256\& int (*rsa_sign)(int type, unsigned char *m, unsigned int m_len,
257\& unsigned char *sigret, unsigned int *siglen, RSA *rsa);
258\&
259\& /* verify. For backward compatibility, this is used only
260\& * if (flags & RSA_FLAG_SIGN_VER)
261\& */
262\& int (*rsa_verify)(int type, unsigned char *m, unsigned int m_len,
263\& unsigned char *sigbuf, unsigned int siglen, RSA *rsa);
264\&
265\& } RSA_METHOD;
266.Ve
267.SH "RETURN VALUES"
268.IX Header "RETURN VALUES"
269\&\fIRSA_PKCS1_SSLeay()\fR, \fIRSA_PKCS1_null_method()\fR, \fIRSA_get_default_method()\fR
270and \fIRSA_get_method()\fR return pointers to the respective RSA_METHODs.
271.PP
272\&\fIRSA_set_default_method()\fR returns no value.
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