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135 .TH ripemd 3 "2009-04-11" "0.9.8k" "OpenSSL"
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141 RIPEMD160, RIPEMD160_Init, RIPEMD160_Update, RIPEMD160_Final \-
142 RIPEMD\-160 hash function
144 .IX Header "SYNOPSIS"
146 \& #include <openssl/ripemd.h>
148 \& unsigned char *RIPEMD160(const unsigned char *d, unsigned long n,
149 \& unsigned char *md);
151 \& int RIPEMD160_Init(RIPEMD160_CTX *c);
152 \& int RIPEMD160_Update(RIPEMD_CTX *c, const void *data,
153 \& unsigned long len);
154 \& int RIPEMD160_Final(unsigned char *md, RIPEMD160_CTX *c);
157 .IX Header "DESCRIPTION"
158 \&\s-1RIPEMD\-160\s0 is a cryptographic hash function with a
161 \&\s-1\fIRIPEMD160\s0()\fR computes the \s-1RIPEMD\-160\s0 message digest of the \fBn\fR
162 bytes at \fBd\fR and places it in \fBmd\fR (which must have space for
163 \&\s-1RIPEMD160_DIGEST_LENGTH\s0 == 20 bytes of output). If \fBmd\fR is \s-1NULL\s0, the digest
164 is placed in a static array.
166 The following functions may be used if the message is not completely
169 \&\fIRIPEMD160_Init()\fR initializes a \fB\s-1RIPEMD160_CTX\s0\fR structure.
171 \&\fIRIPEMD160_Update()\fR can be called repeatedly with chunks of the message to
172 be hashed (\fBlen\fR bytes at \fBdata\fR).
174 \&\fIRIPEMD160_Final()\fR places the message digest in \fBmd\fR, which must have
175 space for \s-1RIPEMD160_DIGEST_LENGTH\s0 == 20 bytes of output, and erases
176 the \fB\s-1RIPEMD160_CTX\s0\fR.
178 Applications should use the higher level functions
179 \&\fIEVP_DigestInit\fR\|(3) etc. instead of calling the
180 hash functions directly.
182 .IX Header "RETURN VALUES"
183 \&\s-1\fIRIPEMD160\s0()\fR returns a pointer to the hash value.
185 \&\fIRIPEMD160_Init()\fR, \fIRIPEMD160_Update()\fR and \fIRIPEMD160_Final()\fR return 1 for
186 success, 0 otherwise.
188 .IX Header "CONFORMING TO"
189 \&\s-1ISO/IEC\s0 10118\-3 (draft) (??)
191 .IX Header "SEE ALSO"
192 \&\fIsha\fR\|(3), \fIhmac\fR\|(3), \fIEVP_DigestInit\fR\|(3)
195 \&\s-1\fIRIPEMD160\s0()\fR, \fIRIPEMD160_Init()\fR, \fIRIPEMD160_Update()\fR and
196 \&\fIRIPEMD160_Final()\fR are available since SSLeay 0.9.0.