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
Applications should use the higher level functions
EVP_DigestInit(3) etc. instead of calling the
hash functions directly.