- NAME
- SYNOPSIS
- DESCRIPTION
- RETURN VALUES
- CONFORMING TO
- SEE ALSO
- HISTORY

# NAME

RIPEMD160, RIPEMD160_Init, RIPEMD160_Update, RIPEMD160_Final - RIPEMD-160 hash function

# SYNOPSIS

     #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);

# DESCRIPTION

RIPEMD-160 is a cryptographic hash function with a 160 bit output.

`RIPEMD160()` computes the RIPEMD-160 message digest of the n bytes at d and places it in md (which must have space for RIPEMD160_DIGEST_LENGTH == 20 bytes of output). If md is NULL, the digest is placed in a static array.

The following functions may be used if the message is not completely stored in memory:

`RIPEMD160_Init()` initializes a RIPEMD160_CTX structure.

`RIPEMD160_Update()` can be called repeatedly with chunks of the message to be hashed (len bytes at data).

`RIPEMD160_Final()` places the message digest in md, which must have space for RIPEMD160_DIGEST_LENGTH == 20 bytes of output, and erases the RIPEMD160_CTX.

Applications should use the higher level functions EVP_DigestInit etc. instead of calling the hash functions directly.

# RETURN VALUES

`RIPEMD160()` returns a pointer to the hash value.

RIPEMD160_Init(), `RIPEMD160_Update()` and `RIPEMD160_Final()` return 1 for success, 0 otherwise.

# CONFORMING TO

ISO/IEC 10118-3 (draft) (??)

# SEE ALSO

sha, hmac, EVP_DigestInit

# HISTORY

RIPEMD160(), RIPEMD160_Init(), `RIPEMD160_Update()` and `RIPEMD160_Final()` are available since SSLeay 0.9.0.