189 lines
5.7 KiB
Groff
189 lines
5.7 KiB
Groff
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.\" ========================================================================
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.\"
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.IX Title "ripemd 3"
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.TH ripemd 3 "2014-10-15" "1.0.1j" "OpenSSL"
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.\" For nroff, turn off justification. Always turn off hyphenation; it makes
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.\" way too many mistakes in technical documents.
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.if n .ad l
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.nh
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.SH "NAME"
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RIPEMD160, RIPEMD160_Init, RIPEMD160_Update, RIPEMD160_Final \-
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RIPEMD\-160 hash function
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.SH "SYNOPSIS"
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.IX Header "SYNOPSIS"
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.Vb 1
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\& #include <openssl/ripemd.h>
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\&
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\& unsigned char *RIPEMD160(const unsigned char *d, unsigned long n,
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\& unsigned char *md);
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\&
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\& int RIPEMD160_Init(RIPEMD160_CTX *c);
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\& int RIPEMD160_Update(RIPEMD_CTX *c, const void *data,
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\& unsigned long len);
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\& int RIPEMD160_Final(unsigned char *md, RIPEMD160_CTX *c);
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.Ve
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.SH "DESCRIPTION"
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.IX Header "DESCRIPTION"
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\&\s-1RIPEMD\-160\s0 is a cryptographic hash function with a
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160 bit output.
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.PP
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\&\s-1\fIRIPEMD160\s0()\fR computes the \s-1RIPEMD\-160\s0 message digest of the \fBn\fR
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bytes at \fBd\fR and places it in \fBmd\fR (which must have space for
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\&\s-1RIPEMD160_DIGEST_LENGTH\s0 == 20 bytes of output). If \fBmd\fR is \s-1NULL\s0, the digest
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is placed in a static array.
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.PP
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The following functions may be used if the message is not completely
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stored in memory:
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.PP
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\&\fIRIPEMD160_Init()\fR initializes a \fB\s-1RIPEMD160_CTX\s0\fR structure.
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.PP
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\&\fIRIPEMD160_Update()\fR can be called repeatedly with chunks of the message to
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be hashed (\fBlen\fR bytes at \fBdata\fR).
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.PP
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\&\fIRIPEMD160_Final()\fR places the message digest in \fBmd\fR, which must have
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space for \s-1RIPEMD160_DIGEST_LENGTH\s0 == 20 bytes of output, and erases
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the \fB\s-1RIPEMD160_CTX\s0\fR.
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.PP
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Applications should use the higher level functions
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\&\fIEVP_DigestInit\fR\|(3) etc. instead of calling the
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hash functions directly.
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.SH "RETURN VALUES"
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.IX Header "RETURN VALUES"
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\&\s-1\fIRIPEMD160\s0()\fR returns a pointer to the hash value.
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.PP
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\&\fIRIPEMD160_Init()\fR, \fIRIPEMD160_Update()\fR and \fIRIPEMD160_Final()\fR return 1 for
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success, 0 otherwise.
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.SH "CONFORMING TO"
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.IX Header "CONFORMING TO"
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\&\s-1ISO/IEC\s0 10118\-3 (draft) (??)
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.SH "SEE ALSO"
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.IX Header "SEE ALSO"
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\&\fIsha\fR\|(3), \fIhmac\fR\|(3), \fIEVP_DigestInit\fR\|(3)
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.SH "HISTORY"
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.IX Header "HISTORY"
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\&\s-1\fIRIPEMD160\s0()\fR, \fIRIPEMD160_Init()\fR, \fIRIPEMD160_Update()\fR and
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\&\fIRIPEMD160_Final()\fR are available since SSLeay 0.9.0.
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