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Editing: RIPEMD160_Update.3
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Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" RIPEMD160, RIPEMD160_Init, RIPEMD160_Update, RIPEMD160_Final \- RIPEMD\-160 hash function .SH "SYNOPSIS" .IX Header "SYNOPSIS" .Vb 1 \& #include <openssl/ripemd.h> \& \& unsigned char *RIPEMD160(const unsigned char *d, unsigned long n, \& unsigned char *md); \& \& int RIPEMD160_Init(RIPEMD160_CTX *c); \& int RIPEMD160_Update(RIPEMD_CTX *c, const void *data, \& unsigned long len); \& int RIPEMD160_Final(unsigned char *md, RIPEMD160_CTX *c); .Ve .SH "DESCRIPTION" .IX Header "DESCRIPTION" \&\s-1RIPEMD\-160\s0 is a cryptographic hash function with a 160 bit output. .PP \&\s-1\fBRIPEMD160\s0()\fR computes the \s-1RIPEMD\-160\s0 message digest of the \fBn\fR bytes at \fBd\fR and places it in \fBmd\fR (which must have space for \&\s-1RIPEMD160_DIGEST_LENGTH\s0 == 20 bytes of output). If \fBmd\fR is \s-1NULL,\s0 the digest is placed in a static array. .PP The following functions may be used if the message is not completely stored in memory: .PP \&\fBRIPEMD160_Init()\fR initializes a \fB\s-1RIPEMD160_CTX\s0\fR structure. .PP \&\fBRIPEMD160_Update()\fR can be called repeatedly with chunks of the message to be hashed (\fBlen\fR bytes at \fBdata\fR). .PP \&\fBRIPEMD160_Final()\fR places the message digest in \fBmd\fR, which must have space for \s-1RIPEMD160_DIGEST_LENGTH\s0 == 20 bytes of output, and erases the \fB\s-1RIPEMD160_CTX\s0\fR. .PP Applications should use the higher level functions \&\fBEVP_DigestInit\fR\|(3) etc. instead of calling the hash functions directly. .SH "RETURN VALUES" .IX Header "RETURN VALUES" \&\s-1\fBRIPEMD160\s0()\fR returns a pointer to the hash value. .PP \&\fBRIPEMD160_Init()\fR, \fBRIPEMD160_Update()\fR and \fBRIPEMD160_Final()\fR return 1 for success, 0 otherwise. .SH "CONFORMING TO" .IX Header "CONFORMING TO" \&\s-1ISO/IEC 10118\-3\s0 (draft) (??) .SH "SEE ALSO" .IX Header "SEE ALSO" \&\fBsha\fR\|(3), \fBhmac\fR\|(3), \fBEVP_DigestInit\fR\|(3) .SH "HISTORY" .IX Header "HISTORY" \&\s-1\fBRIPEMD160\s0()\fR, \fBRIPEMD160_Init()\fR, \fBRIPEMD160_Update()\fR and \&\fBRIPEMD160_Final()\fR are available since SSLeay 0.9.0.
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