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127 .TH ripemd 3 "2007-10-24" "0.9.8g" "OpenSSL"
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133 RIPEMD160, RIPEMD160_Init, RIPEMD160_Update, RIPEMD160_Final \-
134 RIPEMD\-160 hash function
136 .IX Header "SYNOPSIS"
138 \& #include <openssl/ripemd.h>
140 \& unsigned char *RIPEMD160(const unsigned char *d, unsigned long n,
141 \& unsigned char *md);
143 \& int RIPEMD160_Init(RIPEMD160_CTX *c);
144 \& int RIPEMD160_Update(RIPEMD_CTX *c, const void *data,
145 \& unsigned long len);
146 \& int RIPEMD160_Final(unsigned char *md, RIPEMD160_CTX *c);
149 .IX Header "DESCRIPTION"
150 \&\s-1RIPEMD\-160\s0 is a cryptographic hash function with a
153 \&\s-1\fIRIPEMD160\s0()\fR computes the \s-1RIPEMD\-160\s0 message digest of the \fBn\fR
154 bytes at \fBd\fR and places it in \fBmd\fR (which must have space for
155 \&\s-1RIPEMD160_DIGEST_LENGTH\s0 == 20 bytes of output). If \fBmd\fR is \s-1NULL\s0, the digest
156 is placed in a static array.
158 The following functions may be used if the message is not completely
161 \&\fIRIPEMD160_Init()\fR initializes a \fB\s-1RIPEMD160_CTX\s0\fR structure.
163 \&\fIRIPEMD160_Update()\fR can be called repeatedly with chunks of the message to
164 be hashed (\fBlen\fR bytes at \fBdata\fR).
166 \&\fIRIPEMD160_Final()\fR places the message digest in \fBmd\fR, which must have
167 space for \s-1RIPEMD160_DIGEST_LENGTH\s0 == 20 bytes of output, and erases
168 the \fB\s-1RIPEMD160_CTX\s0\fR.
170 Applications should use the higher level functions
171 \&\fIEVP_DigestInit\fR\|(3) etc. instead of calling the
172 hash functions directly.
174 .IX Header "RETURN VALUES"
175 \&\s-1\fIRIPEMD160\s0()\fR returns a pointer to the hash value.
177 \&\fIRIPEMD160_Init()\fR, \fIRIPEMD160_Update()\fR and \fIRIPEMD160_Final()\fR return 1 for
178 success, 0 otherwise.
180 .IX Header "CONFORMING TO"
181 \&\s-1ISO/IEC\s0 10118\-3 (draft) (??)
183 .IX Header "SEE ALSO"
184 \&\fIsha\fR\|(3), \fIhmac\fR\|(3), \fIEVP_DigestInit\fR\|(3)
187 \&\s-1\fIRIPEMD160\s0()\fR, \fIRIPEMD160_Init()\fR, \fIRIPEMD160_Update()\fR and
188 \&\fIRIPEMD160_Final()\fR are available since SSLeay 0.9.0.