CKSUM_CTX
CKSUM_Update(CKSUM_CTX *ctx, const unsigned char *buf, size_t len)
CKSUM_Final(CKSUM_CTX *ctx)
CKSUM_End(CKSUM_CTX *ctx, char *outstr)
CKSUM_Init(CKSUM_CTX *ctx)
void CKSUM_Init(CKSUM_CTX *);
void CKSUM_Update(CKSUM_CTX *, const u_int8_t *, size_t);
void CKSUM_Final(CKSUM_CTX *);
char *CKSUM_End(CKSUM_CTX *, char *);
CKSUM_CTX cksum;