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124 .\" ========================================================================
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126 .IX Title "RSA_sign_ASN1_OCTET_STRING 3"
127 .TH RSA_sign_ASN1_OCTET_STRING 3 "2007-10-24" "0.9.8g" "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"
133 RSA_sign_ASN1_OCTET_STRING, RSA_verify_ASN1_OCTET_STRING \- RSA signatures
134 .SH "SYNOPSIS"
135 .IX Header "SYNOPSIS"
136 .Vb 1
137 \& #include <openssl/rsa.h>
138 \&
139 \& int RSA_sign_ASN1_OCTET_STRING(int dummy, unsigned char *m,
140 \& unsigned int m_len, unsigned char *sigret, unsigned int *siglen,
141 \& RSA *rsa);
142 \&
143 \& int RSA_verify_ASN1_OCTET_STRING(int dummy, unsigned char *m,
144 \& unsigned int m_len, unsigned char *sigbuf, unsigned int siglen,
145 \& RSA *rsa);
146 .Ve
147 .SH "DESCRIPTION"
148 .IX Header "DESCRIPTION"
149 \&\fIRSA_sign_ASN1_OCTET_STRING()\fR signs the octet string \fBm\fR of size
150 \&\fBm_len\fR using the private key \fBrsa\fR represented in \s-1DER\s0 using \s-1PKCS\s0 #1
151 padding. It stores the signature in \fBsigret\fR and the signature size
152 in \fBsiglen\fR. \fBsigret\fR must point to \fBRSA_size(rsa)\fR bytes of
153 memory.
154 .PP
155 \&\fBdummy\fR is ignored.
156 .PP
157 The random number generator must be seeded prior to calling \fIRSA_sign_ASN1_OCTET_STRING()\fR.
158 .PP
159 \&\fIRSA_verify_ASN1_OCTET_STRING()\fR verifies that the signature \fBsigbuf\fR
160 of size \fBsiglen\fR is the \s-1DER\s0 representation of a given octet string
161 \&\fBm\fR of size \fBm_len\fR. \fBdummy\fR is ignored. \fBrsa\fR is the signer's
162 public key.
163 .SH "RETURN VALUES"
164 .IX Header "RETURN VALUES"
165 \&\fIRSA_sign_ASN1_OCTET_STRING()\fR returns 1 on success, 0 otherwise.
166 \&\fIRSA_verify_ASN1_OCTET_STRING()\fR returns 1 on successful verification, 0
167 otherwise.
168 .PP
169 The error codes can be obtained by \fIERR_get_error\fR\|(3).
170 .SH "BUGS"
171 .IX Header "BUGS"
172 These functions serve no recognizable purpose.
173 .SH "SEE ALSO"
174 .IX Header "SEE ALSO"
175 \&\fIERR_get_error\fR\|(3), \fIobjects\fR\|(3),
176 \&\fIrand\fR\|(3), \fIrsa\fR\|(3), \fIRSA_sign\fR\|(3),
177 \&\fIRSA_verify\fR\|(3)
178 .SH "HISTORY"
179 .IX Header "HISTORY"
180 \&\fIRSA_sign_ASN1_OCTET_STRING()\fR and \fIRSA_verify_ASN1_OCTET_STRING()\fR were
181 added in SSLeay 0.8.